Update configure to reflect rc2 in the version

Replace several open-coded variants of percentage formatting.
This function has been ported from Hishams old 'next' branch.

.editorconfig

@@ -14,3 +14,4 @@ charset = utf-8
 [*.{c,h}]
 indent_style = space
 indent_size = 3
+trim_trailing_whitespace = true

.github/FUNDING.yml

@@ -0,0 +1 @@
+open_collective: htop

.github/workflows/ci.yml

@@ -0,0 +1,171 @@
+name: CI
+
+on: [ push, pull_request ]
+
+env:
+  # Enable format attributes in ncurses headers
+  # Enable fortified memory/string handling
+  CPPFLAGS: -DGCC_PRINTF -DGCC_SCANF -D_FORTIFY_SOURCE=2
+
+jobs:
+  build-ubuntu-latest-minimal-gcc:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends libncursesw5-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-affinity --disable-unicode --disable-sensors
+    - name: Enable compatibility modes
+      run: |
+        sed -i 's/#define HAVE_FSTATAT 1/#undef HAVE_FSTATAT/g' config.h
+        sed -i 's/#define HAVE_OPENAT 1/#undef HAVE_OPENAT/g' config.h
+        sed -i 's/#define HAVE_READLINKAT 1/#undef HAVE_READLINKAT/g' config.h
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS="--enable-werror --enable-affinity --disable-unicode --disable-sensors"
+
+  build-ubuntu-latest-minimal-clang:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-12
+    steps:
+    - uses: actions/checkout@v2
+    - name: install clang repo
+      run: |
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key 2>/dev/null | sudo apt-key add -
+        sudo add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends clang-12 libncursesw5-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-affinity --disable-unicode --disable-sensors
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS="--enable-werror --enable-affinity --disable-unicode --disable-sensors"
+
+  build-ubuntu-latest-full-featured-gcc:
+    runs-on: ubuntu-latest
+    # Enable LTO, might trigger additional warnings on advanced inlining
+    env:
+      CFLAGS: -O3 -g -flto
+      LDFLAGS: -O3 -g -flto -Wl,--as-needed
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities'
+
+  build-ubuntu-latest-full-featured-clang:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-12
+    steps:
+    - uses: actions/checkout@v2
+    - name: install clang repo
+      run: |
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key 2>/dev/null | sudo apt-key add -
+        sudo add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends clang-12 libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-delayacct --enable-sensors --enable-capabilities'
+
+  build-ubuntu-latest-gcc-static:
+    runs-on: ubuntu-latest
+    # Enable LTO, might trigger additional warnings on advanced inlining
+    env:
+      CFLAGS: -O3 -g -flto
+      LDFLAGS: -O3 -g -flto
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends libncursesw5-dev libtinfo-dev libgpm-dev libsensors4-dev libcap-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-static --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --disable-hwloc --disable-delayacct --enable-sensors --enable-capabilities
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS='--enable-static --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --disable-hwloc --disable-delayacct --enable-sensors --enable-capabilities'
+
+  build-ubuntu-latest-pcp:
+    # Turns out 'ubuntu-latest' can be older than 20.04, we want PCP v5+
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends libpcp3-dev libncursesw5-dev libtinfo-dev libgpm-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      # Until Ubuntu catches up with pcp-5.2.3+, cannot use -werror due to:
+      # passing argument 2 of ‘pmLookupName’ from incompatible pointer type
+      run: ./configure --enable-pcp --enable-unicode
+    - name: Build
+      run: make -k
+
+  build-ubuntu-latest-clang-analyzer:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-12
+    steps:
+    - uses: actions/checkout@v2
+    - name: install clang repo
+      run: |
+        wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key 2>/dev/null | sudo apt-key add -
+        sudo add-apt-repository 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install --no-install-recommends clang-12 clang-tools-12 libncursesw5-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev libcap-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: scan-build-12 -analyze-headers --status-bugs ./configure --enable-debug --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-delayacct --enable-sensors --enable-capabilities
+    - name: Build
+      run: scan-build-12 -analyze-headers --status-bugs make -j"$(nproc)"
+
+  build-macos-latest-clang:
+    runs-on: macOS-latest
+    env:
+      CC: clang
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: brew install automake
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS="--enable-werror"
+
+  whitespace_check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: check-whitespaces
+        run: git diff-tree --check $(git hash-object -t tree /dev/null) HEAD

.gitignore

@@ -1,5 +1,6 @@
-# the binary:
+# the binaries:
 htop
+pcp-htop
 
 # all object files
 *.o
@@ -17,12 +18,15 @@ htop
 *.h.gch
 */.dirstamp
 
+# automake/autoconf related files
 .deps/
 Makefile
 Makefile.in
+INSTALL
 aclocal.m4
 autom4te.cache/
 compile
+conf*/
 config.guess
 config.h
 config.h.in
@@ -33,9 +37,17 @@ config.sub
 configure
 depcomp
 htop.1
+pcp-htop.5
 install-sh
 libtool
 ltmain.sh
 m4/
 missing
 stamp-h1
+
+# files related to valgrind/callgrind
+callgrind.out.*
+
+# IDE workspace configurations
+/.idea/
+/.vscode/

.travis.yml

@@ -5,7 +5,12 @@ compiler:
   - gcc
 
 os:
-  - linux
-  - osx
+  - freebsd
 
-script: ./autogen.sh && ./configure && make
+script:
+  - ./autogen.sh
+  - ./configure --enable-werror
+  - make -k
+  - make distcheck DISTCHECK_CONFIGURE_FLAGS=--enable-werror
+  - sudo make install
+  - make installcheck

AUTHORS

@@ -1 +1,11 @@
-Hisham H. Muhammad
+Originally authored by:
+ Hisham H. Muhammad
+
+Currently maintained by the htop dev team:
+ Benny Baumann
+ Christian Göttsche
+ Daniel Lange
+ Nathan Scott
+
+For the full list of contributors see:
+ git log --format="%aN" | sort -u

Action.c

@@ -1,82 +1,60 @@
 /*
 htop - Action.c
 (C) 2015 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "config.h"
+#include "config.h" // IWYU pragma: keep
 
 #include "Action.h"
-#include "Affinity.h"
-#include "AffinityPanel.h"
-#include "CategoriesPanel.h"
+
+#include <pwd.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
 #include "CRT.h"
+#include "CategoriesPanel.h"
+#include "CommandScreen.h"
+#include "DynamicColumn.h"
 #include "EnvScreen.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "IncSet.h"
+#include "InfoScreen.h"
+#include "ListItem.h"
+#include "Macros.h"
 #include "MainPanel.h"
 #include "OpenFilesScreen.h"
 #include "Process.h"
+#include "ProcessLocksScreen.h"
+#include "ProvideCurses.h"
 #include "ScreenManager.h"
 #include "SignalsPanel.h"
-#include "StringUtils.h"
 #include "TraceScreen.h"
-#include "Platform.h"
+#include "Vector.h"
+#include "XUtils.h"
 
-#include <ctype.h>
-#include <math.h>
-#include <pwd.h>
-#include <stdlib.h>
-#include <stdbool.h>
-#include <sys/param.h>
-#include <sys/time.h>
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+#include "Affinity.h"
+#include "AffinityPanel.h"
+#endif
 
-/*{
 
-#include "IncSet.h"
-#include "Settings.h"
-#include "Header.h"
-#include "UsersTable.h"
-#include "ProcessList.h"
-#include "Panel.h"
-
-typedef enum {
-   HTOP_OK = 0x00,
-   HTOP_REFRESH = 0x01,
-   HTOP_RECALCULATE = 0x03, // implies HTOP_REFRESH
-   HTOP_SAVE_SETTINGS = 0x04,
-   HTOP_KEEP_FOLLOWING = 0x08,
-   HTOP_QUIT = 0x10,
-   HTOP_REDRAW_BAR = 0x20,
-   HTOP_UPDATE_PANELHDR = 0x41, // implies HTOP_REFRESH
-} Htop_Reaction;
-
-typedef Htop_Reaction (*Htop_Action)();
-
-typedef struct State_ {
-   Settings* settings;
-   UsersTable* ut;
-   ProcessList* pl;
-   Panel* panel;
-   Header* header;
-} State;
-
-}*/
-
-Object* Action_pickFromVector(State* st, Panel* list, int x) {
-   Panel* panel = st->panel;
+Object* Action_pickFromVector(State* st, Panel* list, int x, bool followProcess) {
+   MainPanel* mainPanel = st->mainPanel;
    Header* header = st->header;
-   Settings* settings = st->settings;
-   
-   int y = panel->y;
-   ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, false);
+
+   int y = ((Panel*)mainPanel)->y;
+   ScreenManager* scr = ScreenManager_new(header, st->settings, st, false);
    scr->allowFocusChange = false;
-   ScreenManager_add(scr, list, x - 1);
-   ScreenManager_add(scr, panel, -1);
+   ScreenManager_add(scr, list, x);
+   ScreenManager_add(scr, (Panel*)mainPanel, -1);
    Panel* panelFocus;
    int ch;
    bool unfollow = false;
-   int pid = MainPanel_selectedPid((MainPanel*)panel);
-   if (header->pl->following == -1) {
+   int pid = followProcess ? MainPanel_selectedPid(mainPanel) : -1;
+   if (followProcess && header->pl->following == -1) {
       header->pl->following = pid;
       unfollow = true;
    }
@@ -85,55 +63,56 @@ Object* Action_pickFromVector(State* st, Panel* list, int x) {
       header->pl->following = -1;
    }
    ScreenManager_delete(scr);
-   Panel_move(panel, 0, y);
-   Panel_resize(panel, COLS, LINES-y-1);
+   Panel_move((Panel*)mainPanel, 0, y);
+   Panel_resize((Panel*)mainPanel, COLS, LINES - y - 1);
    if (panelFocus == list && ch == 13) {
-      Process* selected = (Process*)Panel_getSelected(panel);
-      if (selected && selected->pid == pid)
-         return Panel_getSelected(list);
-      else
+      if (followProcess) {
+         const Process* selected = (const Process*)Panel_getSelected((Panel*)mainPanel);
+         if (selected && selected->pid == pid)
+            return Panel_getSelected(list);
+
          beep();
+      } else {
+         return Panel_getSelected(list);
+      }
    }
+
    return NULL;
 }
 
 // ----------------------------------------
 
-static void Action_runSetup(Settings* settings, const Header* header, ProcessList* pl) {
-   ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, true);
-   CategoriesPanel* panelCategories = CategoriesPanel_new(scr, settings, (Header*) header, pl);
-   ScreenManager_add(scr, (Panel*) panelCategories, 16);
-   CategoriesPanel_makeMetersPage(panelCategories);
-   Panel* panelFocus;
-   int ch;
-   ScreenManager_run(scr, &panelFocus, &ch);
+static void Action_runSetup(State* st) {
+   ScreenManager* scr = ScreenManager_new(st->header, st->settings, st, true);
+   CategoriesPanel_new(scr, st->settings, st->header, st->pl);
+   ScreenManager_run(scr, NULL, NULL);
    ScreenManager_delete(scr);
-   if (settings->changed) {
-      Header_writeBackToSettings(header);
+   if (st->settings->changed) {
+      Header_writeBackToSettings(st->header);
    }
 }
 
 static bool changePriority(MainPanel* panel, int delta) {
    bool anyTagged;
-   bool ok = MainPanel_foreachProcess(panel, (MainPanel_ForeachProcessFn) Process_changePriorityBy, delta, &anyTagged);
+   bool ok = MainPanel_foreachProcess(panel, Process_changePriorityBy, (Arg) { .i = delta }, &anyTagged);
    if (!ok)
       beep();
    return anyTagged;
 }
 
-static void addUserToVector(int key, void* userCast, void* panelCast) {
-   char* user = (char*) userCast;
-   Panel* panel = (Panel*) panelCast;
+static void addUserToVector(ht_key_t key, void* userCast, void* panelCast) {
+   const char* user = userCast;
+   Panel* panel = panelCast;
    Panel_add(panel, (Object*) ListItem_new(user, key));
 }
 
 bool Action_setUserOnly(const char* userName, uid_t* userId) {
-   struct passwd* user = getpwnam(userName);
+   const struct passwd* user = getpwnam(userName);
    if (user) {
       *userId = user->pw_uid;
       return true;
    }
-   *userId = -1;
+   *userId = (uid_t)-1;
    return false;
 }
 
@@ -150,43 +129,73 @@ static void tagAllChildren(Panel* panel, Process* parent) {
 
 static bool expandCollapse(Panel* panel) {
    Process* p = (Process*) Panel_getSelected(panel);
-   if (!p) return false;
+   if (!p)
+      return false;
+
    p->showChildren = !p->showChildren;
    return true;
 }
 
-Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
-   settings->sortKey = sortKey;
-   settings->direction = 1;
-   settings->treeView = false;
-   return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
+static bool collapseIntoParent(Panel* panel) {
+   const Process* p = (Process*) Panel_getSelected(panel);
+   if (!p)
+      return false;
+
+   pid_t ppid = Process_getParentPid(p);
+   for (int i = 0; i < Panel_size(panel); i++) {
+      Process* q = (Process*) Panel_get(panel, i);
+      if (q->pid == ppid) {
+         q->showChildren = false;
+         Panel_setSelected(panel, i);
+         return true;
+      }
+   }
+   return false;
 }
 
-static Htop_Reaction sortBy(State* st) {
-   Htop_Reaction reaction = HTOP_OK;
-   Panel* sortPanel = Panel_new(0, 0, 0, 0, true, Class(ListItem), FunctionBar_newEnterEsc("Sort   ", "Cancel "));
-   Panel_setHeader(sortPanel, "Sort by");
-   ProcessField* fields = st->settings->fields;
-   for (int i = 0; fields[i]; i++) {
-      char* name = String_trim(Process_fields[fields[i]].name);
-      Panel_add(sortPanel, (Object*) ListItem_new(name, fields[i]));
-      if (fields[i] == st->settings->sortKey)
-         Panel_setSelected(sortPanel, i);
-      free(name);
-   }
-   ListItem* field = (ListItem*) Action_pickFromVector(st, sortPanel, 15);
-   if (field) {
-      reaction |= Action_setSortKey(st->settings, field->key);
-   }
-   Object_delete(sortPanel);
-   return reaction | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
+   Settings_setSortKey(settings, sortKey);
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
 }
 
 // ----------------------------------------
 
-static Htop_Reaction actionResize(State* st) {
-   Panel_resize(st->panel, COLS, LINES-(st->panel->y)-1);
-   return HTOP_REDRAW_BAR;
+static Htop_Reaction actionSetSortColumn(State* st) {
+   Htop_Reaction reaction = HTOP_OK;
+   Panel* sortPanel = Panel_new(0, 0, 0, 0, Class(ListItem), true, FunctionBar_newEnterEsc("Sort   ", "Cancel "));
+   Panel_setHeader(sortPanel, "Sort by");
+   const ProcessField* fields = st->settings->fields;
+   Hashtable* dynamicColumns = st->settings->dynamicColumns;
+   for (int i = 0; fields[i]; i++) {
+      char* name = NULL;
+      if (fields[i] >= LAST_PROCESSFIELD) {
+         DynamicColumn* column = Hashtable_get(dynamicColumns, fields[i]);
+         if (!column)
+            continue;
+         name = xStrdup(column->caption ? column->caption : column->name);
+      } else {
+         name = String_trim(Process_fields[fields[i]].name);
+      }
+      Panel_add(sortPanel, (Object*) ListItem_new(name, fields[i]));
+      if (fields[i] == Settings_getActiveSortKey(st->settings))
+         Panel_setSelected(sortPanel, i);
+
+      free(name);
+   }
+   const ListItem* field = (const ListItem*) Action_pickFromVector(st, sortPanel, 14, false);
+   if (field) {
+      reaction |= Action_setSortKey(st->settings, field->key);
+   }
+   Object_delete(sortPanel);
+
+   if (st->pauseProcessUpdate)
+      ProcessList_sort(st->pl);
+
+   return reaction | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionSortByPID(State* st) {
+   return Action_setSortKey(st->settings, PID);
 }
 
 static Htop_Reaction actionSortByMemory(State* st) {
@@ -203,13 +212,12 @@ static Htop_Reaction actionSortByTime(State* st) {
 
 static Htop_Reaction actionToggleKernelThreads(State* st) {
    st->settings->hideKernelThreads = !st->settings->hideKernelThreads;
-   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
+   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionToggleUserlandThreads(State* st) {
    st->settings->hideUserlandThreads = !st->settings->hideUserlandThreads;
-   st->settings->hideThreads = st->settings->hideUserlandThreads;
-   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
+   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionToggleProgramPath(State* st) {
@@ -217,46 +225,74 @@ static Htop_Reaction actionToggleProgramPath(State* st) {
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
 }
 
+static Htop_Reaction actionToggleMergedCommand(State* st) {
+   st->settings->showMergedCommand = !st->settings->showMergedCommand;
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
+}
+
 static Htop_Reaction actionToggleTreeView(State* st) {
    st->settings->treeView = !st->settings->treeView;
-   if (st->settings->treeView) st->settings->direction = 1;
-   ProcessList_expandTree(st->pl);
+
+   if (!st->settings->allBranchesCollapsed)
+      ProcessList_expandTree(st->pl);
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
 }
 
+static Htop_Reaction actionExpandOrCollapseAllBranches(State* st) {
+   st->settings->allBranchesCollapsed = !st->settings->allBranchesCollapsed;
+   if (st->settings->allBranchesCollapsed)
+      ProcessList_collapseAllBranches(st->pl);
+   else
+      ProcessList_expandTree(st->pl);
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
+}
+
 static Htop_Reaction actionIncFilter(State* st) {
-   IncSet* inc = ((MainPanel*)st->panel)->inc;
-   IncSet_activate(inc, INC_FILTER, st->panel);
+   IncSet* inc = (st->mainPanel)->inc;
+   IncSet_activate(inc, INC_FILTER, (Panel*)st->mainPanel);
    st->pl->incFilter = IncSet_filter(inc);
    return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionIncSearch(State* st) {
-   IncSet_activate(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel);
+   IncSet_reset(st->mainPanel->inc, INC_SEARCH);
+   IncSet_activate(st->mainPanel->inc, INC_SEARCH, (Panel*)st->mainPanel);
    return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionHigherPriority(State* st) {
-   bool changed = changePriority((MainPanel*)st->panel, -1);
+   if (Settings_isReadonly())
+      return HTOP_OK;
+
+   bool changed = changePriority(st->mainPanel, -1);
    return changed ? HTOP_REFRESH : HTOP_OK;
 }
 
 static Htop_Reaction actionLowerPriority(State* st) {
-   bool changed = changePriority((MainPanel*)st->panel, 1);
+   if (Settings_isReadonly())
+      return HTOP_OK;
+
+   bool changed = changePriority(st->mainPanel, 1);
    return changed ? HTOP_REFRESH : HTOP_OK;
 }
 
 static Htop_Reaction actionInvertSortOrder(State* st) {
    Settings_invertSortOrder(st->settings);
-   return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
-}
-
-static Htop_Reaction actionSetSortColumn(State* st) {
-   return sortBy(st);
+   if (st->pauseProcessUpdate)
+      ProcessList_sort(st->pl);
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionExpandOrCollapse(State* st) {
-   bool changed = expandCollapse(st->panel);
+   bool changed = expandCollapse((Panel*)st->mainPanel);
+   return changed ? HTOP_RECALCULATE : HTOP_OK;
+}
+
+static Htop_Reaction actionCollapseIntoParent(State* st) {
+   if (!st->settings->treeView) {
+      return HTOP_OK;
+   }
+   bool changed = collapseIntoParent((Panel*)st->mainPanel);
    return changed ? HTOP_RECALCULATE : HTOP_OK;
 }
 
@@ -264,62 +300,74 @@ static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
    return st->settings->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
 }
 
-static Htop_Reaction actionQuit() {
+static Htop_Reaction actionQuit(ATTR_UNUSED State* st) {
    return HTOP_QUIT;
 }
 
 static Htop_Reaction actionSetAffinity(State* st) {
-   if (st->pl->cpuCount == 1)
+   if (Settings_isReadonly())
       return HTOP_OK;
-#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
-   Panel* panel = st->panel;
-   
-   Process* p = (Process*) Panel_getSelected(panel);
-   if (!p) return HTOP_OK;
-   Affinity* affinity = Affinity_get(p, st->pl);
-   if (!affinity) return HTOP_OK;
-   Panel* affinityPanel = AffinityPanel_new(st->pl, affinity);
-   Affinity_delete(affinity);
 
-   void* set = Action_pickFromVector(st, affinityPanel, 15);
+   if (st->pl->activeCPUs == 1)
+      return HTOP_OK;
+
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+   const Process* p = (const Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
+   Affinity* affinity1 = Affinity_get(p, st->pl);
+   if (!affinity1)
+      return HTOP_OK;
+
+   int width;
+   Panel* affinityPanel = AffinityPanel_new(st->pl, affinity1, &width);
+   Affinity_delete(affinity1);
+
+   const void* set = Action_pickFromVector(st, affinityPanel, width, true);
    if (set) {
-      Affinity* affinity = AffinityPanel_getAffinity(affinityPanel, st->pl);
-      bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) Affinity_set, (size_t) affinity, NULL);
-      if (!ok) beep();
-      Affinity_delete(affinity);
+      Affinity* affinity2 = AffinityPanel_getAffinity(affinityPanel, st->pl);
+      bool ok = MainPanel_foreachProcess(st->mainPanel, Affinity_set, (Arg) { .v = affinity2 }, NULL);
+      if (!ok)
+         beep();
+      Affinity_delete(affinity2);
    }
-   Panel_delete((Object*)affinityPanel);
-#endif
+   Object_delete(affinityPanel);
    return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+#else
+   return HTOP_OK;
+#endif
+
 }
 
 static Htop_Reaction actionKill(State* st) {
-   Panel* signalsPanel = (Panel*) SignalsPanel_new();
-   ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 15);
-   if (sgn) {
-      if (sgn->key != 0) {
-         Panel_setHeader(st->panel, "Sending...");
-         Panel_draw(st->panel, true);
-         refresh();
-         MainPanel_foreachProcess((MainPanel*)st->panel, (MainPanel_ForeachProcessFn) Process_sendSignal, (size_t) sgn->key, NULL);
-         napms(500);
-      }
+   if (Settings_isReadonly())
+      return HTOP_OK;
+
+   Panel* signalsPanel = SignalsPanel_new();
+   const ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 14, true);
+   if (sgn && sgn->key != 0) {
+      Panel_setHeader((Panel*)st->mainPanel, "Sending...");
+      Panel_draw((Panel*)st->mainPanel, false, true, true, State_hideFunctionBar(st));
+      refresh();
+      MainPanel_foreachProcess(st->mainPanel, Process_sendSignal, (Arg) { .i = sgn->key }, NULL);
+      napms(500);
    }
    Panel_delete((Object*)signalsPanel);
    return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
 }
 
 static Htop_Reaction actionFilterByUser(State* st) {
-   Panel* usersPanel = Panel_new(0, 0, 0, 0, true, Class(ListItem), FunctionBar_newEnterEsc("Show   ", "Cancel "));
+   Panel* usersPanel = Panel_new(0, 0, 0, 0, Class(ListItem), true, FunctionBar_newEnterEsc("Show   ", "Cancel "));
    Panel_setHeader(usersPanel, "Show processes of:");
    UsersTable_foreach(st->ut, addUserToVector, usersPanel);
    Vector_insertionSort(usersPanel->items);
    ListItem* allUsers = ListItem_new("All users", -1);
    Panel_insert(usersPanel, 0, (Object*) allUsers);
-   ListItem* picked = (ListItem*) Action_pickFromVector(st, usersPanel, 20);
+   const ListItem* picked = (ListItem*) Action_pickFromVector(st, usersPanel, 19, false);
    if (picked) {
       if (picked == allUsers) {
-         st->pl->userId = -1;
+         st->pl->userId = (uid_t)-1;
       } else {
          Action_setUserOnly(ListItem_getRef(picked), &(st->pl->userId));
       }
@@ -329,23 +377,24 @@ static Htop_Reaction actionFilterByUser(State* st) {
 }
 
 Htop_Reaction Action_follow(State* st) {
-   st->pl->following = MainPanel_selectedPid((MainPanel*)st->panel);
-   Panel_setSelectionColor(st->panel, CRT_colors[PANEL_SELECTION_FOLLOW]);
+   st->pl->following = MainPanel_selectedPid(st->mainPanel);
+   Panel_setSelectionColor((Panel*)st->mainPanel, PANEL_SELECTION_FOLLOW);
    return HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionSetup(State* st) {
-   Action_runSetup(st->settings, st->header, st->pl);
-   // TODO: shouldn't need this, colors should be dynamic
-   int headerHeight = Header_calculateHeight(st->header);
-   Panel_move(st->panel, 0, headerHeight);
-   Panel_resize(st->panel, COLS, LINES-headerHeight-1);
-   return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+   Action_runSetup(st);
+   return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR | HTOP_RESIZE;
 }
 
 static Htop_Reaction actionLsof(State* st) {
-   Process* p = (Process*) Panel_getSelected(st->panel);
-   if (!p) return HTOP_OK;
+   if (Settings_isReadonly())
+      return HTOP_OK;
+
+   const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
    OpenFilesScreen* ofs = OpenFilesScreen_new(p);
    InfoScreen_run((InfoScreen*)ofs);
    OpenFilesScreen_delete((Object*)ofs);
@@ -354,9 +403,26 @@ static Htop_Reaction actionLsof(State* st) {
    return HTOP_REFRESH | HTOP_REDRAW_BAR;
 }
 
+static Htop_Reaction actionShowLocks(State* st) {
+   const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+   ProcessLocksScreen* pls = ProcessLocksScreen_new(p);
+   InfoScreen_run((InfoScreen*)pls);
+   ProcessLocksScreen_delete((Object*)pls);
+   clear();
+   CRT_enableDelay();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
 static Htop_Reaction actionStrace(State* st) {
-   Process* p = (Process*) Panel_getSelected(st->panel);
-   if (!p) return HTOP_OK;
+   if (Settings_isReadonly())
+      return HTOP_OK;
+
+   const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
    TraceScreen* ts = TraceScreen_new(p);
    bool ok = TraceScreen_forkTracer(ts);
    if (ok) {
@@ -369,77 +435,101 @@ static Htop_Reaction actionStrace(State* st) {
 }
 
 static Htop_Reaction actionTag(State* st) {
-   Process* p = (Process*) Panel_getSelected(st->panel);
-   if (!p) return HTOP_OK;
+   Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
    Process_toggleTag(p);
-   Panel_onKey(st->panel, KEY_DOWN);
+   Panel_onKey((Panel*)st->mainPanel, KEY_DOWN);
    return HTOP_OK;
 }
 
-static Htop_Reaction actionRedraw() {
+static Htop_Reaction actionRedraw(ATTR_UNUSED State* st) {
    clear();
    return HTOP_REFRESH | HTOP_REDRAW_BAR;
 }
 
-static const struct { const char* key; const char* info; } helpLeft[] = {
-   { .key = " Arrows: ", .info = "scroll process list" },
-   { .key = " Digits: ", .info = "incremental PID search" },
-   { .key = "   F3 /: ", .info = "incremental name search" },
-   { .key = "   F4 \\: ",.info = "incremental name filtering" },
-   { .key = "   F5 t: ", .info = "tree view" },
-   { .key = "      p: ", .info = "toggle program path" },
-   { .key = "      u: ", .info = "show processes of a single user" },
-   { .key = "      H: ", .info = "hide/show user process threads" },
-   { .key = "      K: ", .info = "hide/show kernel threads" },
-   { .key = "      F: ", .info = "cursor follows process" },
-   { .key = " F6 + -: ", .info = "expand/collapse tree" },
-   { .key = "  P M T: ", .info = "sort by CPU%, MEM% or TIME" },
-   { .key = "      I: ", .info = "invert sort order" },
-   { .key = " F6 > .: ", .info = "select sort column" },
+static Htop_Reaction actionTogglePauseProcessUpdate(State* st) {
+   st->pauseProcessUpdate = !st->pauseProcessUpdate;
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static const struct {
+   const char* key;
+   bool roInactive;
+   const char* info;
+} helpLeft[] = {
+   { .key = " Arrows: ",  .roInactive = false, .info = "scroll process list" },
+   { .key = " Digits: ",  .roInactive = false, .info = "incremental PID search" },
+   { .key = "   F3 /: ",  .roInactive = false, .info = "incremental name search" },
+   { .key = "   F4 \\: ", .roInactive = false, .info = "incremental name filtering" },
+   { .key = "   F5 t: ",  .roInactive = false, .info = "tree view" },
+   { .key = "      p: ",  .roInactive = false, .info = "toggle program path" },
+   { .key = "      m: ",  .roInactive = false, .info = "toggle merged command" },
+   { .key = "      Z: ",  .roInactive = false, .info = "pause/resume process updates" },
+   { .key = "      u: ",  .roInactive = false, .info = "show processes of a single user" },
+   { .key = "      H: ",  .roInactive = false, .info = "hide/show user process threads" },
+   { .key = "      K: ",  .roInactive = false, .info = "hide/show kernel threads" },
+   { .key = "      F: ",  .roInactive = false, .info = "cursor follows process" },
+   { .key = "  + - *: ",  .roInactive = false, .info = "expand/collapse tree/toggle all" },
+   { .key = "N P M T: ",  .roInactive = false, .info = "sort by PID, CPU%, MEM% or TIME" },
+   { .key = "      I: ",  .roInactive = false, .info = "invert sort order" },
+   { .key = " F6 > .: ",  .roInactive = false, .info = "select sort column" },
    { .key = NULL, .info = NULL }
 };
 
-static const struct { const char* key; const char* info; } helpRight[] = {
-   { .key = "  Space: ", .info = "tag process" },
-   { .key = "      c: ", .info = "tag process and its children" },
-   { .key = "      U: ", .info = "untag all processes" },
-   { .key = "   F9 k: ", .info = "kill process/tagged processes" },
-   { .key = "   F7 ]: ", .info = "higher priority (root only)" },
-   { .key = "   F8 [: ", .info = "lower priority (+ nice)" },
-#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
-   { .key = "      a: ", .info = "set CPU affinity" },
+static const struct {
+   const char* key;
+   bool roInactive;
+   const char* info;
+} helpRight[] = {
+   { .key = "  Space: ", .roInactive = false, .info = "tag process" },
+   { .key = "      c: ", .roInactive = false, .info = "tag process and its children" },
+   { .key = "      U: ", .roInactive = false, .info = "untag all processes" },
+   { .key = "   F9 k: ", .roInactive = true,  .info = "kill process/tagged processes" },
+   { .key = "   F7 ]: ", .roInactive = true,  .info = "higher priority (root only)" },
+   { .key = "   F8 [: ", .roInactive = false, .info = "lower priority (+ nice)" },
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+   { .key = "      a: ", .roInactive = true, .info = "set CPU affinity" },
 #endif
-   { .key = "      e: ", .info = "show process environment" },
-   { .key = "      i: ", .info = "set IO priority" },
-   { .key = "      l: ", .info = "list open files with lsof" },
-   { .key = "      s: ", .info = "trace syscalls with strace" },
-   { .key = "         ", .info = "" },
-   { .key = " F2 C S: ", .info = "setup" },
-   { .key = "   F1 h: ", .info = "show this help screen" },
-   { .key = "  F10 q: ", .info = "quit" },
+   { .key = "      e: ", .roInactive = false, .info = "show process environment" },
+   { .key = "      i: ", .roInactive = true,  .info = "set IO priority" },
+   { .key = "      l: ", .roInactive = true,  .info = "list open files with lsof" },
+   { .key = "      x: ", .roInactive = false, .info = "list file locks of process" },
+   { .key = "      s: ", .roInactive = true,  .info = "trace syscalls with strace" },
+   { .key = "      w: ", .roInactive = false, .info = "wrap process command in multiple lines" },
+   { .key = " F2 C S: ", .roInactive = false, .info = "setup" },
+   { .key = " F1 h ?: ", .roInactive = false, .info = "show this help screen" },
+   { .key = "  F10 q: ", .roInactive = false, .info = "quit" },
    { .key = NULL, .info = NULL }
 };
 
+static inline void addattrstr( int attr, const char* str) {
+   attrset(attr);
+   addstr(str);
+}
+
 static Htop_Reaction actionHelp(State* st) {
-   Settings* settings = st->settings;
-
    clear();
    attrset(CRT_colors[HELP_BOLD]);
 
-   for (int i = 0; i < LINES-1; i++)
+   for (int i = 0; i < LINES - 1; i++)
       mvhline(i, 0, ' ', COLS);
 
-   mvaddstr(0, 0, "htop " VERSION " - " COPYRIGHT);
-   mvaddstr(1, 0, "Released under the GNU GPL. See 'man' page for more info.");
+   int line = 0;
+
+   mvaddstr(line++, 0, "htop " VERSION " - " COPYRIGHT);
+   mvaddstr(line++, 0, "Released under the GNU GPLv2. See 'man' page for more info.");
 
    attrset(CRT_colors[DEFAULT_COLOR]);
-   mvaddstr(3, 0, "CPU usage bar: ");
-   #define addattrstr(a,s) attrset(a);addstr(s)
+   line++;
+   mvaddstr(line++, 0, "CPU usage bar: ");
+
    addattrstr(CRT_colors[BAR_BORDER], "[");
-   if (settings->detailedCPUTime) {
+   if (st->settings->detailedCPUTime) {
       addattrstr(CRT_colors[CPU_NICE_TEXT], "low"); addstr("/");
       addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
-      addattrstr(CRT_colors[CPU_KERNEL], "kernel"); addstr("/");
+      addattrstr(CRT_colors[CPU_SYSTEM], "kernel"); addstr("/");
       addattrstr(CRT_colors[CPU_IRQ], "irq"); addstr("/");
       addattrstr(CRT_colors[CPU_SOFTIRQ], "soft-irq"); addstr("/");
       addattrstr(CRT_colors[CPU_STEAL], "steal"); addstr("/");
@@ -449,69 +539,102 @@ static Htop_Reaction actionHelp(State* st) {
    } else {
       addattrstr(CRT_colors[CPU_NICE_TEXT], "low-priority"); addstr("/");
       addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
-      addattrstr(CRT_colors[CPU_KERNEL], "kernel"); addstr("/");
-      addattrstr(CRT_colors[CPU_STEAL], "virtualiz");
-      addattrstr(CRT_colors[BAR_SHADOW], "               used%");
+      addattrstr(CRT_colors[CPU_SYSTEM], "kernel"); addstr("/");
+      addattrstr(CRT_colors[CPU_GUEST], "virtualized");
+      addattrstr(CRT_colors[BAR_SHADOW], "             used%");
    }
    addattrstr(CRT_colors[BAR_BORDER], "]");
    attrset(CRT_colors[DEFAULT_COLOR]);
-   mvaddstr(4, 0, "Memory bar:    ");
+   mvaddstr(line++, 0, "Memory bar:    ");
    addattrstr(CRT_colors[BAR_BORDER], "[");
    addattrstr(CRT_colors[MEMORY_USED], "used"); addstr("/");
    addattrstr(CRT_colors[MEMORY_BUFFERS_TEXT], "buffers"); addstr("/");
+   addattrstr(CRT_colors[MEMORY_SHARED], "shared"); addstr("/");
    addattrstr(CRT_colors[MEMORY_CACHE], "cache");
-   addattrstr(CRT_colors[BAR_SHADOW], "                            used/total");
+   addattrstr(CRT_colors[BAR_SHADOW], "                     used/total");
    addattrstr(CRT_colors[BAR_BORDER], "]");
    attrset(CRT_colors[DEFAULT_COLOR]);
-   mvaddstr(5, 0, "Swap bar:      ");
+   mvaddstr(line++, 0, "Swap bar:      ");
    addattrstr(CRT_colors[BAR_BORDER], "[");
    addattrstr(CRT_colors[SWAP], "used");
+#ifdef HTOP_LINUX
+   addattrstr(CRT_colors[BAR_SHADOW], "/");
+   addattrstr(CRT_colors[SWAP_CACHE], "cache");
+   addattrstr(CRT_colors[BAR_SHADOW], "                                    used/total");
+#else
    addattrstr(CRT_colors[BAR_SHADOW], "                                          used/total");
+#endif
    addattrstr(CRT_colors[BAR_BORDER], "]");
    attrset(CRT_colors[DEFAULT_COLOR]);
-   mvaddstr(6,0, "Type and layout of header meters are configurable in the setup screen.");
+   mvaddstr(line++, 0, "Type and layout of header meters are configurable in the setup screen.");
    if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
-      mvaddstr(7, 0, "In monochrome, meters display as different chars, in order: |#*@$%&.");
+      mvaddstr(line, 0, "In monochrome, meters display as different chars, in order: |#*@$%&.");
    }
-   mvaddstr( 8, 0, " Status: R: running; S: sleeping; T: traced/stopped; Z: zombie; D: disk sleep");
-   for (int i = 0; helpLeft[i].info; i++) { mvaddstr(9+i, 9,  helpLeft[i].info); }
-   for (int i = 0; helpRight[i].info; i++) { mvaddstr(9+i, 49, helpRight[i].info); }
-   attrset(CRT_colors[HELP_BOLD]);
-   for (int i = 0; helpLeft[i].key;  i++) { mvaddstr(9+i, 0,  helpLeft[i].key); }
-   for (int i = 0; helpRight[i].key; i++) { mvaddstr(9+i, 40, helpRight[i].key); }
-   attrset(CRT_colors[PROCESS_THREAD]);
-   mvaddstr(16, 32, "threads");
-   mvaddstr(17, 26, "threads");
-   attrset(CRT_colors[DEFAULT_COLOR]);
+   line++;
+
+   mvaddstr(line++, 0, "Process state: R: running; S: sleeping; T: traced/stopped; Z: zombie; D: disk sleep");
+
+   line++;
+
+   const bool readonly = Settings_isReadonly();
+
+   int item;
+   for (item = 0; helpLeft[item].key; item++) {
+      attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[DEFAULT_COLOR]);
+      mvaddstr(line + item, 10, helpLeft[item].info);
+      attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[HELP_BOLD]);
+      mvaddstr(line + item, 1,  helpLeft[item].key);
+      if (String_eq(helpLeft[item].key, "      H: ")) {
+         attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[PROCESS_THREAD]);
+         mvaddstr(line + item, 33, "threads");
+      } else if (String_eq(helpLeft[item].key, "      K: ")) {
+         attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[PROCESS_THREAD]);
+         mvaddstr(line + item, 27, "threads");
+      }
+   }
+   int leftHelpItems = item;
+
+   for (item = 0; helpRight[item].key; item++) {
+      attrset((helpRight[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[HELP_BOLD]);
+      mvaddstr(line + item, 41, helpRight[item].key);
+      attrset((helpRight[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[DEFAULT_COLOR]);
+      mvaddstr(line + item, 50, helpRight[item].info);
+   }
+   line += MAXIMUM(leftHelpItems, item);
+   line++;
 
    attrset(CRT_colors[HELP_BOLD]);
-   mvaddstr(23,0, "Press any key to return.");
+   mvaddstr(line++, 0, "Press any key to return.");
    attrset(CRT_colors[DEFAULT_COLOR]);
    refresh();
    CRT_readKey();
    clear();
 
-   return HTOP_RECALCULATE | HTOP_REDRAW_BAR;
+   return HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_KEEP_FOLLOWING;
 }
 
 static Htop_Reaction actionUntagAll(State* st) {
-   for (int i = 0; i < Panel_size(st->panel); i++) {
-      Process* p = (Process*) Panel_get(st->panel, i);
+   for (int i = 0; i < Panel_size((Panel*)st->mainPanel); i++) {
+      Process* p = (Process*) Panel_get((Panel*)st->mainPanel, i);
       p->tag = false;
    }
    return HTOP_REFRESH;
 }
 
 static Htop_Reaction actionTagAllChildren(State* st) {
-   Process* p = (Process*) Panel_getSelected(st->panel);
-   if (!p) return HTOP_OK;
-   tagAllChildren(st->panel, p);
+   Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
+   tagAllChildren((Panel*)st->mainPanel, p);
    return HTOP_OK;
 }
 
 static Htop_Reaction actionShowEnvScreen(State* st) {
-   Process* p = (Process*) Panel_getSelected(st->panel);
-   if (!p) return HTOP_OK;
+   Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
+
    EnvScreen* es = EnvScreen_new(p);
    InfoScreen_run((InfoScreen*)es);
    EnvScreen_delete((Object*)es);
@@ -520,56 +643,72 @@ static Htop_Reaction actionShowEnvScreen(State* st) {
    return HTOP_REFRESH | HTOP_REDRAW_BAR;
 }
 
+static Htop_Reaction actionShowCommandScreen(State* st) {
+   Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+   if (!p)
+      return HTOP_OK;
 
-void Action_setBindings(Htop_Action* keys) {
-   keys[KEY_RESIZE] = actionResize;
-   keys['M'] = actionSortByMemory;
-   keys['T'] = actionSortByTime;
-   keys['P'] = actionSortByCPU;
-   keys['H'] = actionToggleUserlandThreads;
-   keys['K'] = actionToggleKernelThreads;
-   keys['p'] = actionToggleProgramPath;
-   keys['t'] = actionToggleTreeView;
-   keys[KEY_F(5)] = actionToggleTreeView;
-   keys[KEY_F(4)] = actionIncFilter;
-   keys['\\'] = actionIncFilter;
-   keys[KEY_F(3)] = actionIncSearch;
-   keys['/'] = actionIncSearch;
-
-   keys[']'] = actionHigherPriority;
-   keys[KEY_F(7)] = actionHigherPriority;
-   keys['['] = actionLowerPriority;
-   keys[KEY_F(8)] = actionLowerPriority;
-   keys['I'] = actionInvertSortOrder;
-   keys[KEY_F(6)] = actionExpandCollapseOrSortColumn;
-   keys[KEY_F(18)] = actionExpandCollapseOrSortColumn;
-   keys['<'] = actionSetSortColumn;
-   keys[','] = actionSetSortColumn;
-   keys['>'] = actionSetSortColumn;
-   keys['.'] = actionSetSortColumn;
-   keys[KEY_F(10)] = actionQuit;
-   keys['q'] = actionQuit;
-   keys['a'] = actionSetAffinity;
-   keys[KEY_F(9)] = actionKill;
-   keys['k'] = actionKill;
-   keys[KEY_RECLICK] = actionExpandOrCollapse;
-   keys['+'] = actionExpandOrCollapse;
-   keys['='] = actionExpandOrCollapse;
-   keys['-'] = actionExpandOrCollapse;
-   keys['u'] = actionFilterByUser;
-   keys['F'] = Action_follow;
-   keys['S'] = actionSetup;
-   keys['C'] = actionSetup;
-   keys[KEY_F(2)] = actionSetup;
-   keys['l'] = actionLsof;
-   keys['s'] = actionStrace;
-   keys[' '] = actionTag;
-   keys['\014'] = actionRedraw; // Ctrl+L
-   keys[KEY_F(1)] = actionHelp;
-   keys['h'] = actionHelp;
-   keys['?'] = actionHelp;
-   keys['U'] = actionUntagAll;
-   keys['c'] = actionTagAllChildren;
-   keys['e'] = actionShowEnvScreen;
+   CommandScreen* cmdScr = CommandScreen_new(p);
+   InfoScreen_run((InfoScreen*)cmdScr);
+   CommandScreen_delete((Object*)cmdScr);
+   clear();
+   CRT_enableDelay();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
 }
 
+void Action_setBindings(Htop_Action* keys) {
+   keys[' '] = actionTag;
+   keys['*'] = actionExpandOrCollapseAllBranches;
+   keys['+'] = actionExpandOrCollapse;
+   keys[','] = actionSetSortColumn;
+   keys['-'] = actionExpandOrCollapse;
+   keys['.'] = actionSetSortColumn;
+   keys['/'] = actionIncSearch;
+   keys['<'] = actionSetSortColumn;
+   keys['='] = actionExpandOrCollapse;
+   keys['>'] = actionSetSortColumn;
+   keys['?'] = actionHelp;
+   keys['C'] = actionSetup;
+   keys['F'] = Action_follow;
+   keys['H'] = actionToggleUserlandThreads;
+   keys['I'] = actionInvertSortOrder;
+   keys['K'] = actionToggleKernelThreads;
+   keys['M'] = actionSortByMemory;
+   keys['N'] = actionSortByPID;
+   keys['P'] = actionSortByCPU;
+   keys['S'] = actionSetup;
+   keys['T'] = actionSortByTime;
+   keys['U'] = actionUntagAll;
+   keys['Z'] = actionTogglePauseProcessUpdate;
+   keys['['] = actionLowerPriority;
+   keys['\014'] = actionRedraw; // Ctrl+L
+   keys['\177'] = actionCollapseIntoParent;
+   keys['\\'] = actionIncFilter;
+   keys[']'] = actionHigherPriority;
+   keys['a'] = actionSetAffinity;
+   keys['c'] = actionTagAllChildren;
+   keys['e'] = actionShowEnvScreen;
+   keys['h'] = actionHelp;
+   keys['k'] = actionKill;
+   keys['l'] = actionLsof;
+   keys['m'] = actionToggleMergedCommand;
+   keys['p'] = actionToggleProgramPath;
+   keys['q'] = actionQuit;
+   keys['s'] = actionStrace;
+   keys['t'] = actionToggleTreeView;
+   keys['u'] = actionFilterByUser;
+   keys['w'] = actionShowCommandScreen;
+   keys['x'] = actionShowLocks;
+   keys[KEY_F(1)] = actionHelp;
+   keys[KEY_F(2)] = actionSetup;
+   keys[KEY_F(3)] = actionIncSearch;
+   keys[KEY_F(4)] = actionIncFilter;
+   keys[KEY_F(5)] = actionToggleTreeView;
+   keys[KEY_F(6)] = actionSetSortColumn;
+   keys[KEY_F(7)] = actionHigherPriority;
+   keys[KEY_F(8)] = actionLowerPriority;
+   keys[KEY_F(9)] = actionKill;
+   keys[KEY_F(10)] = actionQuit;
+   keys[KEY_F(18)] = actionExpandCollapseOrSortColumn;
+   keys[KEY_RECLICK] = actionExpandOrCollapse;
+}

Action.h

@@ -1,58 +1,64 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Action
 #define HEADER_Action
 /*
 htop - Action.h
 (C) 2015 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
+#include <stdbool.h>
+#include <sys/types.h>
 
-#include "IncSet.h"
-#include "Settings.h"
 #include "Header.h"
-#include "UsersTable.h"
-#include "ProcessList.h"
+#include "Object.h"
 #include "Panel.h"
+#include "Process.h"
+#include "ProcessList.h"
+#include "Settings.h"
+#include "UsersTable.h"
+
 
 typedef enum {
-   HTOP_OK = 0x00,
-   HTOP_REFRESH = 0x01,
-   HTOP_RECALCULATE = 0x03, // implies HTOP_REFRESH
-   HTOP_SAVE_SETTINGS = 0x04,
-   HTOP_KEEP_FOLLOWING = 0x08,
-   HTOP_QUIT = 0x10,
-   HTOP_REDRAW_BAR = 0x20,
-   HTOP_UPDATE_PANELHDR = 0x41, // implies HTOP_REFRESH
+   HTOP_OK              = 0x00,
+   HTOP_REFRESH         = 0x01,
+   HTOP_RECALCULATE     = 0x02 | HTOP_REFRESH,
+   HTOP_SAVE_SETTINGS   = 0x04,
+   HTOP_KEEP_FOLLOWING  = 0x08,
+   HTOP_QUIT            = 0x10,
+   HTOP_REDRAW_BAR      = 0x20,
+   HTOP_UPDATE_PANELHDR = 0x40 | HTOP_REFRESH,
+   HTOP_RESIZE          = 0x80 | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR,
 } Htop_Reaction;
 
-typedef Htop_Reaction (*Htop_Action)();
+struct MainPanel_; // IWYU pragma: keep
 
 typedef struct State_ {
    Settings* settings;
    UsersTable* ut;
    ProcessList* pl;
-   Panel* panel;
+   struct MainPanel_* mainPanel;
    Header* header;
+   bool pauseProcessUpdate;
+   bool hideProcessSelection;
 } State;
 
+static inline bool State_hideFunctionBar(const State* st) {
+   return st->settings->hideFunctionBar == 2 || (st->settings->hideFunctionBar == 1 && st->hideProcessSelection);
+}
 
-Object* Action_pickFromVector(State* st, Panel* list, int x);
+typedef Htop_Reaction (*Htop_Action)(State* st);
 
-// ----------------------------------------
+Object* Action_pickFromVector(State* st, Panel* list, int x, bool followProcess);
 
 bool Action_setUserOnly(const char* userName, uid_t* userId);
 
 Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey);
 
-// ----------------------------------------
-
 Htop_Reaction Action_follow(State* st);
 
-
 void Action_setBindings(Htop_Action* keys);
 
-
 #endif

Affinity.c

@@ -1,42 +1,36 @@
 /*
 htop - Affinity.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "Affinity.h"
 
 #include <stdlib.h>
 
-#ifdef HAVE_LIBHWLOC
+#include "XUtils.h"
+
+#if defined(HAVE_LIBHWLOC)
 #include <hwloc.h>
-#if __linux__
+#include <hwloc/bitmap.h>
+#ifdef __linux__
 #define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_THREAD
 #else
 #define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_PROCESS
 #endif
-#elif HAVE_LINUX_AFFINITY
+#elif defined(HAVE_AFFINITY)
 #include <sched.h>
 #endif
 
-/*{
-#include "Process.h"
-#include "ProcessList.h"
-
-typedef struct Affinity_ {
-   ProcessList* pl;
-   int size;
-   int used;
-   int* cpus;
-} Affinity;
-
-}*/
 
 Affinity* Affinity_new(ProcessList* pl) {
    Affinity* this = xCalloc(1, sizeof(Affinity));
    this->size = 8;
-   this->cpus = xCalloc(this->size, sizeof(int));
+   this->cpus = xCalloc(this->size, sizeof(unsigned int));
    this->pl = pl;
    return this;
 }
@@ -46,32 +40,32 @@ void Affinity_delete(Affinity* this) {
    free(this);
 }
 
-void Affinity_add(Affinity* this, int id) {
+void Affinity_add(Affinity* this, unsigned int id) {
    if (this->used == this->size) {
       this->size *= 2;
-      this->cpus = xRealloc(this->cpus, sizeof(int) * this->size);
+      this->cpus = xRealloc(this->cpus, sizeof(unsigned int) * this->size);
    }
    this->cpus[this->used] = id;
    this->used++;
 }
 
 
-#ifdef HAVE_LIBHWLOC
+#if defined(HAVE_LIBHWLOC)
 
-Affinity* Affinity_get(Process* proc, ProcessList* pl) {
+Affinity* Affinity_get(const Process* proc, ProcessList* pl) {
    hwloc_cpuset_t cpuset = hwloc_bitmap_alloc();
    bool ok = (hwloc_get_proc_cpubind(pl->topology, proc->pid, cpuset, HTOP_HWLOC_CPUBIND_FLAG) == 0);
    Affinity* affinity = NULL;
    if (ok) {
       affinity = Affinity_new(pl);
       if (hwloc_bitmap_last(cpuset) == -1) {
-         for (int i = 0; i < pl->cpuCount; i++) {
+         for (unsigned int i = 0; i < pl->existingCPUs; i++) {
             Affinity_add(affinity, i);
          }
       } else {
-         unsigned int id;
-         hwloc_bitmap_foreach_begin(id, cpuset);
-            Affinity_add(affinity, id);
+         int id;
+         hwloc_bitmap_foreach_begin(id, cpuset)
+            Affinity_add(affinity, (unsigned)id);
          hwloc_bitmap_foreach_end();
       }
    }
@@ -79,9 +73,10 @@ Affinity* Affinity_get(Process* proc, ProcessList* pl) {
    return affinity;
 }
 
-bool Affinity_set(Process* proc, Affinity* this) {
+bool Affinity_set(Process* proc, Arg arg) {
+   Affinity* this = arg.v;
    hwloc_cpuset_t cpuset = hwloc_bitmap_alloc();
-   for (int i = 0; i < this->used; i++) {
+   for (unsigned int i = 0; i < this->used; i++) {
       hwloc_bitmap_set(cpuset, this->cpus[i]);
    }
    bool ok = (hwloc_set_proc_cpubind(this->pl->topology, proc->pid, cpuset, HTOP_HWLOC_CPUBIND_FLAG) == 0);
@@ -89,24 +84,28 @@ bool Affinity_set(Process* proc, Affinity* this) {
    return ok;
 }
 
-#elif HAVE_LINUX_AFFINITY
+#elif defined(HAVE_AFFINITY)
 
-Affinity* Affinity_get(Process* proc, ProcessList* pl) {
+Affinity* Affinity_get(const Process* proc, ProcessList* pl) {
    cpu_set_t cpuset;
    bool ok = (sched_getaffinity(proc->pid, sizeof(cpu_set_t), &cpuset) == 0);
-   if (!ok) return NULL;
+   if (!ok)
+      return NULL;
+
    Affinity* affinity = Affinity_new(pl);
-   for (int i = 0; i < pl->cpuCount; i++) {
-      if (CPU_ISSET(i, &cpuset))
+   for (unsigned int i = 0; i < pl->existingCPUs; i++) {
+      if (CPU_ISSET(i, &cpuset)) {
          Affinity_add(affinity, i);
+      }
    }
    return affinity;
 }
 
-bool Affinity_set(Process* proc, Affinity* this) {
+bool Affinity_set(Process* proc, Arg arg) {
+   Affinity* this = arg.v;
    cpu_set_t cpuset;
    CPU_ZERO(&cpuset);
-   for (int i = 0; i < this->used; i++) {
+   for (unsigned int i = 0; i < this->used; i++) {
       CPU_SET(this->cpus[i], &cpuset);
    }
    bool ok = (sched_setaffinity(proc->pid, sizeof(unsigned long), &cpuset) == 0);

Affinity.h

@@ -1,52 +1,49 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Affinity
 #define HEADER_Affinity
 /*
 htop - Affinity.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#ifdef HAVE_LIBHWLOC
-#if __linux__
-#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_THREAD
-#else
-#define HTOP_HWLOC_CPUBIND_FLAG HWLOC_CPUBIND_PROCESS
-#endif
-#elif HAVE_LINUX_AFFINITY
+#include "config.h" // IWYU pragma: keep
+
+#include "ProcessList.h"
+
+#if defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY)
+#include <stdbool.h>
+
+#include "Object.h"
+#include "Process.h"
+#endif
+
+
+#if defined(HAVE_LIBHWLOC) && defined(HAVE_AFFINITY)
+#error hwloc and affinity support are mutual exclusive.
 #endif
 
-#include "Process.h"
-#include "ProcessList.h"
 
 typedef struct Affinity_ {
    ProcessList* pl;
-   int size;
-   int used;
-   int* cpus;
+   unsigned int size;
+   unsigned int used;
+   unsigned int* cpus;
 } Affinity;
 
-
 Affinity* Affinity_new(ProcessList* pl);
 
 void Affinity_delete(Affinity* this);
 
-void Affinity_add(Affinity* this, int id);
+void Affinity_add(Affinity* this, unsigned int id);
 
-#ifdef HAVE_LIBHWLOC
+#if defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY)
 
-Affinity* Affinity_get(Process* proc, ProcessList* pl);
+Affinity* Affinity_get(const Process* proc, ProcessList* pl);
 
-bool Affinity_set(Process* proc, Affinity* this);
+bool Affinity_set(Process* proc, Arg arg);
 
-#elif HAVE_LINUX_AFFINITY
-
-Affinity* Affinity_get(Process* proc, ProcessList* pl);
-
-bool Affinity_set(Process* proc, Affinity* this);
-
-#endif
+#endif /* HAVE_LIBHWLOC || HAVE_AFFINITY */
 
 #endif

AffinityPanel.c

@@ -1,76 +1,442 @@
 /*
 htop - AffinityPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "AffinityPanel.h"
-#include "CRT.h"
+#include "config.h" // IWYU pragma: keep
 
-#include "CheckItem.h"
+#include "AffinityPanel.h"
 
 #include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
 #include <string.h>
 
-/*{
-#include "Panel.h"
-#include "Affinity.h"
-#include "ProcessList.h"
-#include "ListItem.h"
-}*/
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
+#include <hwloc/bitmap.h>
+#endif
+
+
+typedef struct MaskItem_ {
+   Object super;
+   char* text;
+   char* indent; /* used also as an condition whether this is a tree node */
+   int value; /* tri-state: 0 - off, 1 - some set, 2 - all set */
+   int sub_tree; /* tri-state: 0 - no sub-tree, 1 - open sub-tree, 2 - closed sub-tree */
+   Vector* children;
+   #ifdef HAVE_LIBHWLOC
+   bool ownCpuset;
+   hwloc_bitmap_t cpuset;
+   #else
+   int cpu;
+   #endif
+} MaskItem;
+
+static void MaskItem_delete(Object* cast) {
+   MaskItem* this = (MaskItem*) cast;
+   free(this->text);
+   free(this->indent);
+   Vector_delete(this->children);
+   #ifdef HAVE_LIBHWLOC
+   if (this->ownCpuset)
+      hwloc_bitmap_free(this->cpuset);
+   #endif
+   free(this);
+}
+
+static void MaskItem_display(const Object* cast, RichString* out) {
+   const MaskItem* this = (const MaskItem*)cast;
+   assert (this != NULL);
+   RichString_appendAscii(out, CRT_colors[CHECK_BOX], "[");
+   if (this->value == 2) {
+      RichString_appendAscii(out, CRT_colors[CHECK_MARK], "x");
+   } else if (this->value == 1) {
+      RichString_appendAscii(out, CRT_colors[CHECK_MARK], "o");
+   } else {
+      RichString_appendAscii(out, CRT_colors[CHECK_MARK], " ");
+   }
+   RichString_appendAscii(out, CRT_colors[CHECK_BOX], "]");
+   RichString_appendAscii(out, CRT_colors[CHECK_TEXT], " ");
+   if (this->indent) {
+      RichString_appendWide(out, CRT_colors[PROCESS_TREE], this->indent);
+      RichString_appendWide(out, CRT_colors[PROCESS_TREE],
+                            this->sub_tree == 2
+                            ? CRT_treeStr[TREE_STR_OPEN]
+                            : CRT_treeStr[TREE_STR_SHUT]);
+      RichString_appendAscii(out, CRT_colors[CHECK_TEXT], " ");
+   }
+   RichString_appendWide(out, CRT_colors[CHECK_TEXT], this->text);
+}
+
+static const ObjectClass MaskItem_class = {
+   .display = MaskItem_display,
+   .delete  = MaskItem_delete
+};
+
+#ifdef HAVE_LIBHWLOC
+
+static MaskItem* MaskItem_newMask(const char* text, const char* indent, hwloc_bitmap_t cpuset, bool owner) {
+   MaskItem* this = AllocThis(MaskItem);
+   this->text = xStrdup(text);
+   this->indent = xStrdup(indent); /* nonnull for tree node */
+   this->value = 0;
+   this->ownCpuset = owner;
+   this->cpuset = cpuset;
+   this->sub_tree = hwloc_bitmap_weight(cpuset) > 1 ? 1 : 0;
+   this->children = Vector_new(Class(MaskItem), true, DEFAULT_SIZE);
+   return this;
+}
+
+#endif
+
+static MaskItem* MaskItem_newSingleton(const char* text, int cpu, bool isSet) {
+   MaskItem* this = AllocThis(MaskItem);
+   this->text = xStrdup(text);
+   this->indent = NULL; /* not a tree node */
+   this->sub_tree = 0;
+   this->children = Vector_new(Class(MaskItem), true, DEFAULT_SIZE);
+
+   #ifdef HAVE_LIBHWLOC
+   this->ownCpuset = true;
+   this->cpuset = hwloc_bitmap_alloc();
+   hwloc_bitmap_set(this->cpuset, cpu);
+   #else
+   this->cpu = cpu;
+   #endif
+   this->value = isSet ? 2 : 0;
+
+   return this;
+}
+
+typedef struct AffinityPanel_ {
+   Panel super;
+   ProcessList* pl;
+   bool topoView;
+   Vector* cpuids;
+   unsigned width;
+
+   #ifdef HAVE_LIBHWLOC
+   MaskItem* topoRoot;
+   hwloc_const_cpuset_t allCpuset;
+   hwloc_bitmap_t workCpuset;
+   #endif
+} AffinityPanel;
+
+static void AffinityPanel_delete(Object* cast) {
+   AffinityPanel* this = (AffinityPanel*) cast;
+   Panel* super = (Panel*) this;
+   Panel_done(super);
+   Vector_delete(this->cpuids);
+   #ifdef HAVE_LIBHWLOC
+   hwloc_bitmap_free(this->workCpuset);
+   MaskItem_delete((Object*) this->topoRoot);
+   #endif
+   free(this);
+}
+
+#ifdef HAVE_LIBHWLOC
+
+static void AffinityPanel_updateItem(AffinityPanel* this, MaskItem* item) {
+   Panel* super = (Panel*) this;
+
+   item->value = hwloc_bitmap_isincluded(item->cpuset, this->workCpuset) ? 2 :
+                 hwloc_bitmap_intersects(item->cpuset, this->workCpuset) ? 1 : 0;
+
+   Panel_add(super, (Object*) item);
+}
+
+static void AffinityPanel_updateTopo(AffinityPanel* this, MaskItem* item) {
+   AffinityPanel_updateItem(this, item);
+
+   if (item->sub_tree == 2)
+      return;
+
+   for (int i = 0; i < Vector_size(item->children); i++)
+      AffinityPanel_updateTopo(this, (MaskItem*) Vector_get(item->children, i));
+}
+
+#endif
+
+static void AffinityPanel_update(AffinityPanel* this, bool keepSelected) {
+   Panel* super = (Panel*) this;
+
+   FunctionBar_setLabel(super->currentBar, KEY_F(3), this->topoView ? "Collapse/Expand" : "");
+
+   int oldSelected = Panel_getSelectedIndex(super);
+   Panel_prune(super);
+
+   #ifdef HAVE_LIBHWLOC
+   if (this->topoView) {
+      AffinityPanel_updateTopo(this, this->topoRoot);
+   } else {
+      for (int i = 0; i < Vector_size(this->cpuids); i++) {
+         AffinityPanel_updateItem(this, (MaskItem*) Vector_get(this->cpuids, i));
+      }
+   }
+   #else
+   Panel_splice(super, this->cpuids);
+   #endif
+
+   if (keepSelected)
+      Panel_setSelected(super, oldSelected);
+
+   super->needsRedraw = true;
+}
+
+static HandlerResult AffinityPanel_eventHandler(Panel* super, int ch) {
+   AffinityPanel* this = (AffinityPanel*) super;
+   HandlerResult result = IGNORED;
+   MaskItem* selected = (MaskItem*) Panel_getSelected(super);
+   bool keepSelected = true;
 
-static HandlerResult AffinityPanel_eventHandler(Panel* this, int ch) {
-   CheckItem* selected = (CheckItem*) Panel_getSelected(this);
    switch(ch) {
    case KEY_MOUSE:
    case KEY_RECLICK:
    case ' ':
-      CheckItem_set(selected, ! (CheckItem_get(selected)) );
-      return HANDLED;
+      #ifdef HAVE_LIBHWLOC
+      if (selected->value == 2) {
+         /* Item was selected, so remove this mask from the top cpuset. */
+         hwloc_bitmap_andnot(this->workCpuset, this->workCpuset, selected->cpuset);
+         selected->value = 0;
+      } else {
+         /* Item was not or only partial selected, so set all bits from this object
+            in the top cpuset. */
+         hwloc_bitmap_or(this->workCpuset, this->workCpuset, selected->cpuset);
+         selected->value = 2;
+      }
+      #else
+      selected->value = selected->value ? 0 : 2; /* toggle between 0 and 2 */
+      #endif
+
+      result = HANDLED;
+      break;
+
+   #ifdef HAVE_LIBHWLOC
+
+   case KEY_F(1):
+      hwloc_bitmap_copy(this->workCpuset, this->allCpuset);
+      result = HANDLED;
+      break;
+
+   case KEY_F(2):
+      this->topoView = !this->topoView;
+      keepSelected = false;
+
+      result = HANDLED;
+      break;
+
+   case KEY_F(3):
+   case '-':
+   case '+':
+      if (selected->sub_tree)
+         selected->sub_tree = 1 + !(selected->sub_tree - 1); /* toggle between 1 and 2 */
+
+      result = HANDLED;
+      break;
+
+   #endif
+
    case 0x0a:
    case 0x0d:
    case KEY_ENTER:
-      return BREAK_LOOP;
+      result = BREAK_LOOP;
+      break;
    }
-   return IGNORED;
+
+   if (HANDLED == result)
+      AffinityPanel_update(this, keepSelected);
+
+   return result;
 }
 
-PanelClass AffinityPanel_class = {
+#ifdef HAVE_LIBHWLOC
+
+static MaskItem* AffinityPanel_addObject(AffinityPanel* this, hwloc_obj_t obj, unsigned indent, MaskItem* parent) {
+   const char* type_name = hwloc_obj_type_string(obj->type);
+   const char* index_prefix = "#";
+   unsigned depth = obj->depth;
+   unsigned index = obj->logical_index;
+   size_t off = 0, left = 10 * depth;
+   char buf[64], indent_buf[left + 1];
+
+   if (obj->type == HWLOC_OBJ_PU) {
+      index = Settings_cpuId(this->pl->settings, obj->os_index);
+      type_name = "CPU";
+      index_prefix = "";
+   }
+
+   indent_buf[0] = '\0';
+   if (depth > 0) {
+      for (unsigned i = 1; i < depth; i++) {
+         xSnprintf(&indent_buf[off], left, "%s  ", (indent & (1U << i)) ? CRT_treeStr[TREE_STR_VERT] : " ");
+         size_t len = strlen(&indent_buf[off]);
+         off += len;
+         left -= len;
+      }
+      xSnprintf(&indent_buf[off], left, "%s",
+                obj->next_sibling ? CRT_treeStr[TREE_STR_RTEE] : CRT_treeStr[TREE_STR_BEND]);
+      // Uncomment when further appending to indent_buf
+      //size_t len = strlen(&indent_buf[off]);
+      //off += len;
+      //left -= len;
+   }
+
+   xSnprintf(buf, sizeof(buf), "%s %s%u", type_name, index_prefix, index);
+
+   MaskItem* item = MaskItem_newMask(buf, indent_buf, obj->complete_cpuset, false);
+   if (parent)
+      Vector_add(parent->children, item);
+
+   if (item->sub_tree && parent && parent->sub_tree == 1) {
+      /* if obj is fully included or fully excluded, collapse the item */
+      hwloc_bitmap_t result = hwloc_bitmap_alloc();
+      hwloc_bitmap_and(result, obj->complete_cpuset, this->workCpuset);
+      int weight = hwloc_bitmap_weight(result);
+      hwloc_bitmap_free(result);
+      if (weight == 0 || weight == (hwloc_bitmap_weight(this->workCpuset) + hwloc_bitmap_weight(obj->complete_cpuset))) {
+         item->sub_tree = 2;
+      }
+   }
+
+   /* "[x] " + "|- " * depth + ("- ")?(if root node) + name */
+   unsigned width = 4 + 3 * depth + (2 * !depth) + strlen(buf);
+   if (width > this->width) {
+      this->width = width;
+   }
+
+   return item;
+}
+
+static MaskItem* AffinityPanel_buildTopology(AffinityPanel* this, hwloc_obj_t obj, unsigned indent, MaskItem* parent) {
+   MaskItem* item = AffinityPanel_addObject(this, obj, indent, parent);
+   if (obj->next_sibling) {
+      indent |= (1U << obj->depth);
+   } else {
+      indent &= ~(1U << obj->depth);
+   }
+
+   for (unsigned i = 0; i < obj->arity; i++) {
+      AffinityPanel_buildTopology(this, obj->children[i], indent, item);
+   }
+
+   return parent == NULL ? item : NULL;
+}
+
+#endif
+
+const PanelClass AffinityPanel_class = {
    .super = {
       .extends = Class(Panel),
-      .delete = Panel_delete
+      .delete = AffinityPanel_delete
    },
    .eventHandler = AffinityPanel_eventHandler
 };
 
-Panel* AffinityPanel_new(ProcessList* pl, Affinity* affinity) {
-   Panel* this = Panel_new(1, 1, 1, 1, true, Class(CheckItem), FunctionBar_newEnterEsc("Set    ", "Cancel "));
-   Object_setClass(this, Class(AffinityPanel));
+static const char* const AffinityPanelFunctions[] = {
+   "Set    ",
+   "Cancel ",
+   #ifdef HAVE_LIBHWLOC
+   "All",
+   "Topology",
+   "               ",
+   #endif
+   NULL
+};
+static const char* const AffinityPanelKeys[] = {"Enter", "Esc", "F1", "F2", "F3"};
+static const int AffinityPanelEvents[] = {13, 27, KEY_F(1), KEY_F(2), KEY_F(3)};
 
-   Panel_setHeader(this, "Use CPUs:");
-   int curCpu = 0;
-   for (int i = 0; i < pl->cpuCount; i++) {
-      char number[10];
-      xSnprintf(number, 9, "%d", Settings_cpuId(pl->settings, i));
-      bool mode;
-      if (curCpu < affinity->used && affinity->cpus[curCpu] == i) {
-         mode = true;
-         curCpu++;
-      } else {
-         mode = false;
+Panel* AffinityPanel_new(ProcessList* pl, const Affinity* affinity, int* width) {
+   AffinityPanel* this = AllocThis(AffinityPanel);
+   Panel* super = (Panel*) this;
+   Panel_init(super, 1, 1, 1, 1, Class(MaskItem), false, FunctionBar_new(AffinityPanelFunctions, AffinityPanelKeys, AffinityPanelEvents));
+
+   this->pl = pl;
+   /* defaults to 15, this also includes the gap between the panels,
+    * but this will be added by the caller */
+   this->width = 14;
+
+   this->cpuids   = Vector_new(Class(MaskItem), true, DEFAULT_SIZE);
+
+   #ifdef HAVE_LIBHWLOC
+   this->topoView = pl->settings->topologyAffinity;
+   #else
+   this->topoView = false;
+   #endif
+
+   #ifdef HAVE_LIBHWLOC
+   this->allCpuset  = hwloc_topology_get_complete_cpuset(pl->topology);
+   this->workCpuset = hwloc_bitmap_alloc();
+   #endif
+
+   Panel_setHeader(super, "Use CPUs:");
+
+   unsigned int curCpu = 0;
+   for (unsigned int i = 0; i < pl->existingCPUs; i++) {
+      if (!ProcessList_isCPUonline(this->pl, i))
+         continue;
+
+      char number[16];
+      xSnprintf(number, 9, "CPU %d", Settings_cpuId(pl->settings, i));
+      unsigned cpu_width = 4 + strlen(number);
+      if (cpu_width > this->width) {
+         this->width = cpu_width;
       }
-      Panel_add(this, (Object*) CheckItem_newByVal(xStrdup(number), mode));
+
+      bool isSet = false;
+      if (curCpu < affinity->used && affinity->cpus[curCpu] == i) {
+         #ifdef HAVE_LIBHWLOC
+         hwloc_bitmap_set(this->workCpuset, i);
+         #endif
+         isSet = true;
+         curCpu++;
+      }
+
+      MaskItem* cpuItem = MaskItem_newSingleton(number, i, isSet);
+      Vector_add(this->cpuids, (Object*) cpuItem);
    }
-   return this;
+
+   #ifdef HAVE_LIBHWLOC
+   this->topoRoot = AffinityPanel_buildTopology(this, hwloc_get_root_obj(pl->topology), 0, NULL);
+   #endif
+
+   if (width) {
+      *width = this->width;
+   }
+
+   AffinityPanel_update(this, false);
+
+   return super;
 }
 
-Affinity* AffinityPanel_getAffinity(Panel* this, ProcessList* pl) {
+Affinity* AffinityPanel_getAffinity(Panel* super, ProcessList* pl) {
+   const AffinityPanel* this = (AffinityPanel*) super;
    Affinity* affinity = Affinity_new(pl);
-   int size = Panel_size(this);
-   for (int i = 0; i < size; i++) {
-      if (CheckItem_get((CheckItem*)Panel_get(this, i)))
-         Affinity_add(affinity, i);
+
+   #ifdef HAVE_LIBHWLOC
+   int i;
+   hwloc_bitmap_foreach_begin(i, this->workCpuset)
+      Affinity_add(affinity, (unsigned)i);
+   hwloc_bitmap_foreach_end();
+   #else
+   for (int i = 0; i < Vector_size(this->cpuids); i++) {
+      const MaskItem* item = (const MaskItem*)Vector_get(this->cpuids, i);
+      if (item->value) {
+         Affinity_add(affinity, item->cpu);
+      }
    }
+   #endif
+
    return affinity;
 }

AffinityPanel.h

@@ -1,23 +1,21 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_AffinityPanel
 #define HEADER_AffinityPanel
 /*
 htop - AffinityPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Panel.h"
 #include "Affinity.h"
+#include "Panel.h"
 #include "ProcessList.h"
-#include "ListItem.h"
 
-extern PanelClass AffinityPanel_class;
 
-Panel* AffinityPanel_new(ProcessList* pl, Affinity* affinity);
+extern const PanelClass AffinityPanel_class;
 
-Affinity* AffinityPanel_getAffinity(Panel* this, ProcessList* pl);
+Panel* AffinityPanel_new(ProcessList* pl, const Affinity* affinity, int* width);
+
+Affinity* AffinityPanel_getAffinity(Panel* super, ProcessList* pl);
 
 #endif

AvailableColumnsPanel.c

@@ -1,30 +1,27 @@
 /*
 htop - AvailableColumnsPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "AvailableColumnsPanel.h"
-#include "Platform.h"
-
-#include "Header.h"
-#include "ColumnsPanel.h"
 
 #include <assert.h>
-#include <stdlib.h>
 #include <ctype.h>
-#include <string.h>
+#include <stdbool.h>
+#include <stdlib.h>
 
-/*{
-#include "Panel.h"
+#include "ColumnsPanel.h"
+#include "DynamicColumn.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "Process.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct AvailableColumnsPanel_ {
-   Panel super;
-   Panel* columns;
-} AvailableColumnsPanel;
-
-}*/
 
 static const char* const AvailableColumnsFunctions[] = {"      ", "      ", "      ", "      ", "Add   ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
@@ -35,9 +32,17 @@ static void AvailableColumnsPanel_delete(Object* object) {
    free(this);
 }
 
+static void AvailableColumnsPanel_insert(AvailableColumnsPanel* this, int at, int key) {
+   const char* name;
+   if (key >= LAST_PROCESSFIELD)
+      name = DynamicColumn_init(key);
+   else
+      name = Process_fields[key].name;
+   Panel_insert(this->columns, at, (Object*) ListItem_new(name, key));
+}
+
 static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
    AvailableColumnsPanel* this = (AvailableColumnsPanel*) super;
-   int key = ((ListItem*) Panel_getSelected(super))->key;
    HandlerResult result = IGNORED;
 
    switch(ch) {
@@ -45,16 +50,20 @@ static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
       case KEY_ENTER:
       case KEY_F(5):
       {
+         const ListItem* selected = (ListItem*) Panel_getSelected(super);
+         if (!selected)
+            break;
+
          int at = Panel_getSelectedIndex(this->columns);
-         Panel_insert(this->columns, at, (Object*) ListItem_new(Process_fields[key].name, key));
-         Panel_setSelected(this->columns, at+1);
+         AvailableColumnsPanel_insert(this, at, selected->key);
+         Panel_setSelected(this->columns, at + 1);
          ColumnsPanel_update(this->columns);
          result = HANDLED;
          break;
       }
       default:
       {
-         if (ch < 255 && isalpha(ch))
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
             result = Panel_selectByTyping(super, ch);
          break;
       }
@@ -62,7 +71,7 @@ static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
    return result;
 }
 
-PanelClass AvailableColumnsPanel_class = {
+const PanelClass AvailableColumnsPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = AvailableColumnsPanel_delete
@@ -70,21 +79,44 @@ PanelClass AvailableColumnsPanel_class = {
    .eventHandler = AvailableColumnsPanel_eventHandler
 };
 
-AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns) {
-   AvailableColumnsPanel* this = AllocThis(AvailableColumnsPanel);
-   Panel* super = (Panel*) this;
-   FunctionBar* fuBar = FunctionBar_new(AvailableColumnsFunctions, NULL, NULL);
-   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+static void AvailableColumnsPanel_addDynamicColumn(ht_key_t key, void* value, void* data) {
+   const DynamicColumn* column = (const DynamicColumn*) value;
+   Panel* super = (Panel*) data;
+   const char* title = column->caption ? column->caption : column->heading;
+   if (!title)
+      title = column->name;  // fallback to the only mandatory field
+   char description[256];
+   xSnprintf(description, sizeof(description), "%s - %s", title, column->description);
+   Panel_add(super, (Object*) ListItem_new(description, key));
+}
 
-   Panel_setHeader(super, "Available Columns");
+// Handle DynamicColumns entries in the AvailableColumnsPanel
+static void AvailableColumnsPanel_addDynamicColumns(Panel* super, Hashtable* dynamicColumns) {
+   assert(dynamicColumns);
+   Hashtable_foreach(dynamicColumns, AvailableColumnsPanel_addDynamicColumn, super);
+}
 
-   for (int i = 1; i < Platform_numberOfFields; i++) {
+// Handle remaining Platform Meter entries in the AvailableColumnsPanel
+static void AvailableColumnsPanel_addPlatformColumn(Panel* super) {
+   for (int i = 1; i < LAST_PROCESSFIELD; i++) {
       if (i != COMM && Process_fields[i].description) {
          char description[256];
          xSnprintf(description, sizeof(description), "%s - %s", Process_fields[i].name, Process_fields[i].description);
          Panel_add(super, (Object*) ListItem_new(description, i));
       }
    }
+}
+
+AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns, Hashtable* dynamicColumns) {
+   AvailableColumnsPanel* this = AllocThis(AvailableColumnsPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(AvailableColumnsFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+
+   Panel_setHeader(super, "Available Columns");
+   AvailableColumnsPanel_addPlatformColumn(super);
+   AvailableColumnsPanel_addDynamicColumns(super, dynamicColumns);
+
    this->columns = columns;
    return this;
 }

AvailableColumnsPanel.h

@@ -1,24 +1,23 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_AvailableColumnsPanel
 #define HEADER_AvailableColumnsPanel
 /*
 htop - AvailableColumnsPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "Hashtable.h"
 #include "Panel.h"
 
+
 typedef struct AvailableColumnsPanel_ {
    Panel super;
    Panel* columns;
 } AvailableColumnsPanel;
 
+extern const PanelClass AvailableColumnsPanel_class;
 
-extern PanelClass AvailableColumnsPanel_class;
-
-AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns);
+AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns, Hashtable* dynamicColumns);
 
 #endif

AvailableMetersPanel.c

@@ -1,60 +1,55 @@
 /*
 htop - AvailableMetersPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
-
-#include "CPUMeter.h"
-#include "Header.h"
-#include "ListItem.h"
-#include "Platform.h"
 
 #include <assert.h>
+#include <stdbool.h>
 #include <stdlib.h>
 
-/*{
-#include "Settings.h"
-#include "Panel.h"
-#include "ScreenManager.h"
-#include "ProcessList.h"
+#include "CPUMeter.h"
+#include "DynamicMeter.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "Header.h"
+#include "ListItem.h"
+#include "Macros.h"
+#include "Meter.h"
+#include "MetersPanel.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct AvailableMetersPanel_ {
-   Panel super;
-   ScreenManager* scr;
-
-   Settings* settings;
-   Header* header;
-   Panel* leftPanel;
-   Panel* rightPanel;
-} AvailableMetersPanel;
-
-}*/
 
 static void AvailableMetersPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    AvailableMetersPanel* this = (AvailableMetersPanel*) object;
    Panel_done(super);
+   free(this->meterPanels);
    free(this);
 }
 
-static inline void AvailableMetersPanel_addMeter(Header* header, Panel* panel, MeterClass* type, int param, int column) {
-   Meter* meter = (Meter*) Header_addMeterByClass(header, type, param, column);
-   Panel_add(panel, (Object*) Meter_toListItem(meter, false));
-   Panel_setSelected(panel, Panel_size(panel) - 1);
-   MetersPanel_setMoving((MetersPanel*)panel, true);
-   FunctionBar_draw(panel->currentBar, NULL);
+static inline void AvailableMetersPanel_addMeter(Header* header, MetersPanel* panel, const MeterClass* type, unsigned int param, size_t column) {
+   const Meter* meter = Header_addMeterByClass(header, type, param, column);
+   Panel_add((Panel*)panel, (Object*) Meter_toListItem(meter, false));
+   Panel_setSelected((Panel*)panel, Panel_size((Panel*)panel) - 1);
+   MetersPanel_setMoving(panel, true);
 }
 
 static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
    AvailableMetersPanel* this = (AvailableMetersPanel*) super;
    Header* header = this->header;
-   
-   ListItem* selected = (ListItem*) Panel_getSelected(super);
-   int param = selected->key & 0xff;
+
+   const ListItem* selected = (ListItem*) Panel_getSelected(super);
+   if (!selected)
+      return IGNORED;
+
+   unsigned int param = selected->key & 0xffff;
    int type = selected->key >> 16;
    HandlerResult result = IGNORED;
    bool update = false;
@@ -64,7 +59,7 @@ static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
       case 'l':
       case 'L':
       {
-         AvailableMetersPanel_addMeter(header, this->leftPanel, Platform_meterTypes[type], param, 0);
+         AvailableMetersPanel_addMeter(header, this->meterPanels[0], Platform_meterTypes[type], param, 0);
          result = HANDLED;
          update = true;
          break;
@@ -76,7 +71,7 @@ static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
       case 'r':
       case 'R':
       {
-         AvailableMetersPanel_addMeter(header, this->rightPanel, Platform_meterTypes[type], param, 1);
+         AvailableMetersPanel_addMeter(header, this->meterPanels[this->columns - 1], Platform_meterTypes[type], param, this->columns - 1);
          result = (KEY_LEFT << 16) | SYNTH_KEY;
          update = true;
          break;
@@ -85,13 +80,14 @@ static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
    if (update) {
       this->settings->changed = true;
       Header_calculateHeight(header);
+      Header_updateData(header);
       Header_draw(header);
-      ScreenManager_resize(this->scr, this->scr->x1, header->height, this->scr->x2, this->scr->y2);
+      ScreenManager_resize(this->scr);
    }
    return result;
 }
 
-PanelClass AvailableMetersPanel_class = {
+const PanelClass AvailableMetersPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = AvailableMetersPanel_delete
@@ -99,39 +95,76 @@ PanelClass AvailableMetersPanel_class = {
    .eventHandler = AvailableMetersPanel_eventHandler
 };
 
-AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr, ProcessList* pl) {
+// Handle (&CPUMeter_class) entries in the AvailableMetersPanel
+static void AvailableMetersPanel_addCPUMeters(Panel* super, const MeterClass* type, const ProcessList* pl) {
+   if (pl->existingCPUs > 1) {
+      Panel_add(super, (Object*) ListItem_new("CPU average", 0));
+      for (unsigned int i = 1; i <= pl->existingCPUs; i++) {
+         char buffer[50];
+         xSnprintf(buffer, sizeof(buffer), "%s %d", type->uiName, Settings_cpuId(pl->settings, i - 1));
+         Panel_add(super, (Object*) ListItem_new(buffer, i));
+      }
+   } else {
+      Panel_add(super, (Object*) ListItem_new(type->uiName, 1));
+   }
+}
+
+typedef struct {
+   Panel* super;
+   unsigned int id;
+   unsigned int offset;
+} DynamicIterator;
+
+static void AvailableMetersPanel_addDynamicMeter(ATTR_UNUSED ht_key_t key, void* value, void* data) {
+   const DynamicMeter* meter = (const DynamicMeter*)value;
+   DynamicIterator* iter = (DynamicIterator*)data;
+   unsigned int identifier = (iter->offset << 16) | iter->id;
+   const char* label = meter->description ? meter->description : meter->caption;
+   if (!label)
+      label = meter->name; /* last fallback to name, guaranteed set */
+   Panel_add(iter->super, (Object*) ListItem_new(label, identifier));
+   iter->id++;
+}
+
+// Handle (&DynamicMeter_class) entries in the AvailableMetersPanel
+static void AvailableMetersPanel_addDynamicMeters(Panel* super, const ProcessList* pl, unsigned int offset) {
+   DynamicIterator iter = { .super = super, .id = 1, .offset = offset };
+   assert(pl->dynamicMeters != NULL);
+   Hashtable_foreach(pl->dynamicMeters, AvailableMetersPanel_addDynamicMeter, &iter);
+}
+
+// Handle remaining Platform Meter entries in the AvailableMetersPanel
+static void AvailableMetersPanel_addPlatformMeter(Panel* super, const MeterClass* type, unsigned int offset) {
+   const char* label = type->description ? type->description : type->uiName;
+   Panel_add(super, (Object*) ListItem_new(label, offset << 16));
+}
+
+AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, size_t columns, MetersPanel** meterPanels, ScreenManager* scr, const ProcessList* pl) {
    AvailableMetersPanel* this = AllocThis(AvailableMetersPanel);
    Panel* super = (Panel*) this;
    FunctionBar* fuBar = FunctionBar_newEnterEsc("Add   ", "Done   ");
    Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
-   
+
    this->settings = settings;
    this->header = header;
-   this->leftPanel = leftMeters;
-   this->rightPanel = rightMeters;
+   this->columns = columns;
+   this->meterPanels = meterPanels;
    this->scr = scr;
 
    Panel_setHeader(super, "Available meters");
-   // Platform_meterTypes[0] should be always (&CPUMeter_class), which we will
-   // handle separately in the code below.
-   for (int i = 1; Platform_meterTypes[i]; i++) {
-      MeterClass* type = Platform_meterTypes[i];
+   // Platform_meterTypes[0] should be always (&CPUMeter_class) which we will
+   // handle separately in the code below.  Likewise, identifiers for Dynamic
+   // Meters are handled separately - similar to CPUs, this allows generation
+   // of multiple different Meters (also using 'param' to distinguish them).
+   for (unsigned int i = 1; Platform_meterTypes[i]; i++) {
+      const MeterClass* type = Platform_meterTypes[i];
       assert(type != &CPUMeter_class);
-      const char* label = type->description ? type->description : type->uiName;
-      Panel_add(super, (Object*) ListItem_new(label, i << 16));
-   }
-   // Handle (&CPUMeter_class)
-   MeterClass* type = &CPUMeter_class;
-   int cpus = pl->cpuCount;
-   if (cpus > 1) {
-      Panel_add(super, (Object*) ListItem_new("CPU average", 0));
-      for (int i = 1; i <= cpus; i++) {
-         char buffer[50];
-         xSnprintf(buffer, 50, "%s %d", type->uiName, i);
-         Panel_add(super, (Object*) ListItem_new(buffer, i));
-      }
-   } else {
-      Panel_add(super, (Object*) ListItem_new("CPU", 1));
+      if (type == &DynamicMeter_class)
+         AvailableMetersPanel_addDynamicMeters(super, pl, i);
+      else
+         AvailableMetersPanel_addPlatformMeter(super, type, i);
    }
+   AvailableMetersPanel_addCPUMeters(super, &CPUMeter_class, pl);
+
    return this;
 }

AvailableMetersPanel.h

@@ -1,18 +1,21 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_AvailableMetersPanel
 #define HEADER_AvailableMetersPanel
 /*
 htop - AvailableMetersPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Settings.h"
+#include <stddef.h>
+
+#include "Header.h"
+#include "MetersPanel.h"
 #include "Panel.h"
-#include "ScreenManager.h"
 #include "ProcessList.h"
+#include "ScreenManager.h"
+#include "Settings.h"
+
 
 typedef struct AvailableMetersPanel_ {
    Panel super;
@@ -20,13 +23,12 @@ typedef struct AvailableMetersPanel_ {
 
    Settings* settings;
    Header* header;
-   Panel* leftPanel;
-   Panel* rightPanel;
+   size_t columns;
+   MetersPanel** meterPanels;
 } AvailableMetersPanel;
 
+extern const PanelClass AvailableMetersPanel_class;
 
-extern PanelClass AvailableMetersPanel_class;
-
-AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr, ProcessList* pl);
+AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, size_t columns, MetersPanel **meterPanels, ScreenManager* scr, const ProcessList* pl);
 
 #endif

BatteryMeter.c

@@ -1,7 +1,7 @@
 /*
 htop - BatteryMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 
 This meter written by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
@@ -9,66 +9,50 @@ This meter written by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
 
 #include "BatteryMeter.h"
 
-#include "Battery.h"
-#include "ProcessList.h"
+#include <math.h>
+
 #include "CRT.h"
-#include "StringUtils.h"
+#include "Object.h"
 #include "Platform.h"
+#include "XUtils.h"
 
-#include <string.h>
-#include <stdlib.h>
 
-/*{
-#include "Meter.h"
-
-typedef enum ACPresence_ {
-   AC_ABSENT,
-   AC_PRESENT,
-   AC_ERROR
-} ACPresence;
-}*/
-
-int BatteryMeter_attributes[] = {
+static const int BatteryMeter_attributes[] = {
    BATTERY
 };
 
-static void BatteryMeter_updateValues(Meter * this, char *buffer, int len) {
+static void BatteryMeter_updateValues(Meter* this) {
    ACPresence isOnAC;
    double percent;
-   
-   Battery_getData(&percent, &isOnAC);
 
-   if (percent == -1) {
-      this->values[0] = 0;
-      xSnprintf(buffer, len, "n/a");
+   Platform_getBattery(&percent, &isOnAC);
+
+   if (isnan(percent)) {
+      this->values[0] = NAN;
+      xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "N/A");
       return;
    }
 
    this->values[0] = percent;
 
-   const char *onAcText, *onBatteryText, *unknownText;
-
-   unknownText = "%.1f%%";
-   if (this->mode == TEXT_METERMODE) {
-      onAcText = "%.1f%% (Running on A/C)";
-      onBatteryText = "%.1f%% (Running on battery)";
-   } else {
-      onAcText = "%.1f%%(A/C)";
-      onBatteryText = "%.1f%%(bat)";
+   const char* text;
+   switch (isOnAC) {
+   case AC_PRESENT:
+      text = this->mode == TEXT_METERMODE ? " (Running on A/C)" : "(A/C)";
+      break;
+   case AC_ABSENT:
+      text = this->mode == TEXT_METERMODE ? " (Running on battery)" : "(bat)";
+      break;
+   case AC_ERROR:
+   default:
+      text = "";
+      break;
    }
 
-   if (isOnAC == AC_PRESENT) {
-      xSnprintf(buffer, len, onAcText, percent);
-   } else if (isOnAC == AC_ABSENT) {
-      xSnprintf(buffer, len, onBatteryText, percent);
-   } else {
-      xSnprintf(buffer, len, unknownText, percent);
-   }
-
-   return;
+   xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "%.1f%%%s", percent, text);
 }
 
-MeterClass BatteryMeter_class = {
+const MeterClass BatteryMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete

BatteryMeter.h

@@ -1,11 +1,9 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_BatteryMeter
 #define HEADER_BatteryMeter
 /*
 htop - BatteryMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 
 This meter written by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
@@ -13,14 +11,13 @@ This meter written by Ian P. Hands (iphands@gmail.com, ihands@redhat.com).
 
 #include "Meter.h"
 
+
 typedef enum ACPresence_ {
    AC_ABSENT,
    AC_PRESENT,
    AC_ERROR
 } ACPresence;
 
-extern int BatteryMeter_attributes[];
-
-extern MeterClass BatteryMeter_class;
+extern const MeterClass BatteryMeter_class;
 
 #endif

CONTRIBUTING.md

@@ -0,0 +1,45 @@
+Contributing Guide
+==================
+
+Thank you so much for taking the time to contribute in to htop!
+
+Bug Reports
+-----------
+
+Bug reports should be posted in the [Github issue
+tracker](https://github.com/htop-dev/htop/issues).
+Bug reports are extremely important since it's impossible for us to test
+htop in every possible system, distribution and scenario. Your feedback
+is what keeps the tool stable and always improving!  Thank you!
+
+Pull Requests
+-------------
+
+Code contributions are most welcome! Just [fork the
+repo](https://github.com/htop-dev/htop) and send a [pull
+request](https://github.com/htop-dev/htop/pulls).  Help is especially
+appreciated for support of platforms other than Linux.  If proposing new
+features, please be mindful that htop is a system tool that needs to keep a
+small footprint and perform well on systems under stress -- so unfortunately
+we can't accept every new feature proposed, as we need to keep the tool slim
+and maintainable.  Great ideas backed by a PR are always carefully considered
+for inclusion though!  Also, PRs containing bug fixes and portability tweaks
+are always included, please send those in!
+
+Feature Requests
+----------------
+
+Please label Github issues that are feature requests with one of the `feature request`
+labels. If you can't do this yourself, don't worry. The friendly folks from the
+core team will distribute and fixup Github labels as part of the regular reviews.
+
+Style Guide
+-----------
+
+To make working with the code easier a set of guidelines have evolved in
+the past that new contributions should try to follow. While they are not set
+in stone and always up for changes should the need arise they still provide
+a first orientation to go by when contributing to this repository.
+
+The details of the coding style as well as what to take care about with your
+contributions can be found in our [style guide](docs/styleguide.md).

COPYING

@@ -1,12 +1,12 @@
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                          675 Mass Ave, Cambridge, MA 02139, USA
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-			    Preamble
+                            Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -15,7 +15,7 @@ software--to make sure the software is free for all its users.  This
 General Public License applies to most of the Free Software
 Foundation's software and to any other program whose authors commit to
 using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
+the GNU Lesser General Public License instead.)  You can apply it to
 your programs, too.
 
   When we speak of free software, we are referring to freedom, not
@@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.
 
   The precise terms and conditions for copying, distribution and
 modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
+
+                    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License applies to any program or other work which contains
@@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
     License.  (Exception: if the Program itself is interactive but
     does not normally print such an announcement, your work based on
     the Program is not required to print an announcement.)
-
+
 These requirements apply to the modified work as a whole.  If
 identifiable sections of that work are not derived from the Program,
 and can be reasonably considered independent and separate works in
@@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
 access to copy the source code from the same place counts as
 distribution of the source code, even though third parties are not
 compelled to copy the source along with the object code.
-
+
   4. You may not copy, modify, sublicense, or distribute the Program
 except as expressly provided under this License.  Any attempt
 otherwise to copy, modify, sublicense or distribute the Program is
@@ -225,7 +225,7 @@ impose that choice.
 
 This section is intended to make thoroughly clear what is believed to
 be a consequence of the rest of this License.
-
+
   8. If the distribution and/or use of the Program is restricted in
 certain countries either by patents or by copyrighted interfaces, the
 original copyright holder who places the Program under this License
@@ -255,7 +255,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
-			    NO WARRANTY
+                            NO WARRANTY
 
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
-
-	Appendix: How to Apply These Terms to Your New Programs
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
@@ -291,7 +291,7 @@ convey the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
     <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 19yy  <name of author>
+    Copyright (C) <year>  <name of author>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -303,16 +303,16 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 Also add information on how to contact you by electronic and paper mail.
 
 If the program is interactive, make it output a short notice like this
 when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision version 69, Copyright (C) year name of author
     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
@@ -335,22 +335,5 @@ necessary.  Here is a sample; alter the names:
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
+library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
-
-
-	Appendix 2: Special exception concerning PLPA
-
- In the following exception, "PLPA" means (i) code released by the
- Portable Linux Processor Affinity Project, or (ii) derivative works of
- such code, in both cases provided that the code is covered entirely by
- free software licensing terms.
-
- As a special exception to the GNU GPL, the licensors of htop give you
- permission to combine GNU GPL-licensed code in htop (and derivative
- works of such code) with PLPA. You may copy and distribute such a
- combined work following the terms of the GNU GPL for htop and the
- applicable licenses of the version of PLPA used in your combined work,
- provided that you include the source code of such version of PLPA when
- and as the GNU GPL requires distribution of source code.
-

CPUMeter.c

@@ -1,125 +1,192 @@
 /*
 htop - CPUMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "CPUMeter.h"
 
-#include "CRT.h"
-#include "Settings.h"
-#include "Platform.h"
-
-#include <assert.h>
+#include <math.h>
 #include <stdlib.h>
 #include <string.h>
-#include <math.h>
 
-/*{
-#include "Meter.h"
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "XUtils.h"
 
-typedef enum {
-   CPU_METER_NICE = 0,
-   CPU_METER_NORMAL = 1,
-   CPU_METER_KERNEL = 2,
-   CPU_METER_IRQ = 3,
-   CPU_METER_SOFTIRQ = 4,
-   CPU_METER_STEAL = 5,
-   CPU_METER_GUEST = 6,
-   CPU_METER_IOWAIT = 7,
-   CPU_METER_ITEMCOUNT = 8, // number of entries in this enum
-} CPUMeterValues;
 
-}*/
-
-int CPUMeter_attributes[] = {
-   CPU_NICE, CPU_NORMAL, CPU_KERNEL, CPU_IRQ, CPU_SOFTIRQ, CPU_STEAL, CPU_GUEST, CPU_IOWAIT
+static const int CPUMeter_attributes[] = {
+   CPU_NICE,
+   CPU_NORMAL,
+   CPU_SYSTEM,
+   CPU_IRQ,
+   CPU_SOFTIRQ,
+   CPU_STEAL,
+   CPU_GUEST,
+   CPU_IOWAIT
 };
 
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
+typedef struct CPUMeterData_ {
+   unsigned int cpus;
+   Meter** meters;
+} CPUMeterData;
 
 static void CPUMeter_init(Meter* this) {
-   int cpu = this->param;
-   if (this->pl->cpuCount > 1) {
+   unsigned int cpu = this->param;
+   if (cpu == 0) {
+      Meter_setCaption(this, "Avg");
+   } else if (this->pl->activeCPUs > 1) {
       char caption[10];
-      xSnprintf(caption, sizeof(caption), "%-3d", Settings_cpuId(this->pl->settings, cpu - 1));
+      xSnprintf(caption, sizeof(caption), "%3u", Settings_cpuId(this->pl->settings, cpu - 1));
       Meter_setCaption(this, caption);
    }
-   if (this->param == 0)
-      Meter_setCaption(this, "Avg");
 }
 
-static void CPUMeter_updateValues(Meter* this, char* buffer, int size) {
-   int cpu = this->param;
-   if (cpu > this->pl->cpuCount) {
-      xSnprintf(buffer, size, "absent");
-      return;
-   }
+// Custom uiName runtime logic to include the param (processor)
+static void CPUMeter_getUiName(const Meter* this, char* buffer, size_t length) {
+   if (this->param > 0)
+      xSnprintf(buffer, length, "%s %u", Meter_uiName(this), this->param);
+   else
+      xSnprintf(buffer, length, "%s", Meter_uiName(this));
+}
+
+static void CPUMeter_updateValues(Meter* this) {
    memset(this->values, 0, sizeof(double) * CPU_METER_ITEMCOUNT);
-   double percent = Platform_setCPUValues(this, cpu);
-   xSnprintf(buffer, size, "%5.1f%%", percent);
-}
 
-static void CPUMeter_display(Object* cast, RichString* out) {
-   char buffer[50];
-   Meter* this = (Meter*)cast;
-   RichString_prune(out);
-   if (this->param > this->pl->cpuCount) {
-      RichString_append(out, CRT_colors[METER_TEXT], "absent");
+   unsigned int cpu = this->param;
+   if (cpu > this->pl->existingCPUs) {
+      xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "absent");
       return;
    }
-   xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NORMAL]);
-   RichString_append(out, CRT_colors[METER_TEXT], ":");
-   RichString_append(out, CRT_colors[CPU_NORMAL], buffer);
-   if (this->pl->settings->detailedCPUTime) {
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
-      RichString_append(out, CRT_colors[METER_TEXT], "sy:");
-      RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
-      RichString_append(out, CRT_colors[METER_TEXT], "ni:");
-      RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
-      RichString_append(out, CRT_colors[METER_TEXT], "hi:");
-      RichString_append(out, CRT_colors[CPU_IRQ], buffer);
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_SOFTIRQ]);
-      RichString_append(out, CRT_colors[METER_TEXT], "si:");
-      RichString_append(out, CRT_colors[CPU_SOFTIRQ], buffer);
-      if (this->values[CPU_METER_STEAL]) {
-         xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_STEAL]);
-         RichString_append(out, CRT_colors[METER_TEXT], "st:");
-         RichString_append(out, CRT_colors[CPU_STEAL], buffer);
-      }
-      if (this->values[CPU_METER_GUEST]) {
-         xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_GUEST]);
-         RichString_append(out, CRT_colors[METER_TEXT], "gu:");
-         RichString_append(out, CRT_colors[CPU_GUEST], buffer);
-      }
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IOWAIT]);
-      RichString_append(out, CRT_colors[METER_TEXT], "wa:");
-      RichString_append(out, CRT_colors[CPU_IOWAIT], buffer);
-   } else {
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
-      RichString_append(out, CRT_colors[METER_TEXT], "sys:");
-      RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
-      RichString_append(out, CRT_colors[METER_TEXT], "low:");
-      RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
-      if (this->values[CPU_METER_IRQ]) {
-         xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
-         RichString_append(out, CRT_colors[METER_TEXT], "vir:");
-         RichString_append(out, CRT_colors[CPU_GUEST], buffer);
+
+   double percent = Platform_setCPUValues(this, cpu);
+   if (isnan(percent)) {
+      xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "offline");
+      return;
+   }
+
+   char cpuUsageBuffer[8] = { 0 };
+   char cpuFrequencyBuffer[16] = { 0 };
+   char cpuTemperatureBuffer[16] = { 0 };
+
+   if (this->pl->settings->showCPUUsage) {
+      xSnprintf(cpuUsageBuffer, sizeof(cpuUsageBuffer), "%.1f%%", percent);
+   }
+
+   if (this->pl->settings->showCPUFrequency) {
+      double cpuFrequency = this->values[CPU_METER_FREQUENCY];
+      if (isnan(cpuFrequency)) {
+         xSnprintf(cpuFrequencyBuffer, sizeof(cpuFrequencyBuffer), "N/A");
+      } else {
+         xSnprintf(cpuFrequencyBuffer, sizeof(cpuFrequencyBuffer), "%4uMHz", (unsigned)cpuFrequency);
       }
    }
+
+   #ifdef BUILD_WITH_CPU_TEMP
+   if (this->pl->settings->showCPUTemperature) {
+      double cpuTemperature = this->values[CPU_METER_TEMPERATURE];
+      if (isnan(cpuTemperature))
+         xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "N/A");
+      else if (this->pl->settings->degreeFahrenheit)
+         xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "%3d%sF", (int)(cpuTemperature * 9 / 5 + 32), CRT_degreeSign);
+      else
+         xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "%d%sC", (int)cpuTemperature, CRT_degreeSign);
+   }
+   #endif
+
+   xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "%s%s%s%s%s",
+             cpuUsageBuffer,
+             (cpuUsageBuffer[0] && (cpuFrequencyBuffer[0] || cpuTemperatureBuffer[0])) ? " " : "",
+             cpuFrequencyBuffer,
+             (cpuFrequencyBuffer[0] && cpuTemperatureBuffer[0]) ? " " : "",
+             cpuTemperatureBuffer);
 }
 
-static void AllCPUsMeter_getRange(Meter* this, int* start, int* count) {
-   int cpus = this->pl->cpuCount;
+static void CPUMeter_display(const Object* cast, RichString* out) {
+   char buffer[50];
+   int len;
+   const Meter* this = (const Meter*)cast;
+
+   if (this->param > this->pl->existingCPUs) {
+      RichString_appendAscii(out, CRT_colors[METER_SHADOW], " absent");
+      return;
+   }
+
+   if (this->curItems == 0) {
+      RichString_appendAscii(out, CRT_colors[METER_SHADOW], " offline");
+      return;
+   }
+
+   len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NORMAL]);
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], ":");
+   RichString_appendnAscii(out, CRT_colors[CPU_NORMAL], buffer, len);
+   if (this->pl->settings->detailedCPUTime) {
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "sy:");
+      RichString_appendnAscii(out, CRT_colors[CPU_SYSTEM], buffer, len);
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "ni:");
+      RichString_appendnAscii(out, CRT_colors[CPU_NICE_TEXT], buffer, len);
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "hi:");
+      RichString_appendnAscii(out, CRT_colors[CPU_IRQ], buffer, len);
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_SOFTIRQ]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "si:");
+      RichString_appendnAscii(out, CRT_colors[CPU_SOFTIRQ], buffer, len);
+      if (!isnan(this->values[CPU_METER_STEAL])) {
+         len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_STEAL]);
+         RichString_appendAscii(out, CRT_colors[METER_TEXT], "st:");
+         RichString_appendnAscii(out, CRT_colors[CPU_STEAL], buffer, len);
+      }
+      if (!isnan(this->values[CPU_METER_GUEST])) {
+         len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_GUEST]);
+         RichString_appendAscii(out, CRT_colors[METER_TEXT], "gu:");
+         RichString_appendnAscii(out, CRT_colors[CPU_GUEST], buffer, len);
+      }
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IOWAIT]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "wa:");
+      RichString_appendnAscii(out, CRT_colors[CPU_IOWAIT], buffer, len);
+   } else {
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_KERNEL]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "sys:");
+      RichString_appendnAscii(out, CRT_colors[CPU_SYSTEM], buffer, len);
+      len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_NICE]);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "low:");
+      RichString_appendnAscii(out, CRT_colors[CPU_NICE_TEXT], buffer, len);
+      if (!isnan(this->values[CPU_METER_IRQ])) {
+         len = xSnprintf(buffer, sizeof(buffer), "%5.1f%% ", this->values[CPU_METER_IRQ]);
+         RichString_appendAscii(out, CRT_colors[METER_TEXT], "vir:");
+         RichString_appendnAscii(out, CRT_colors[CPU_GUEST], buffer, len);
+      }
+   }
+
+   #ifdef BUILD_WITH_CPU_TEMP
+   if (this->pl->settings->showCPUTemperature) {
+      char cpuTemperatureBuffer[10];
+      double cpuTemperature = this->values[CPU_METER_TEMPERATURE];
+      if (isnan(cpuTemperature)) {
+         len = xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "N/A");
+      } else if (this->pl->settings->degreeFahrenheit) {
+         len = xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "%5.1f%sF", cpuTemperature * 9 / 5 + 32, CRT_degreeSign);
+      } else {
+         len = xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "%5.1f%sC", cpuTemperature, CRT_degreeSign);
+      }
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], "temp:");
+      RichString_appendnWide(out, CRT_colors[METER_VALUE], cpuTemperatureBuffer, len);
+   }
+   #endif
+}
+
+static void AllCPUsMeter_getRange(const Meter* this, int* start, int* count) {
+   const CPUMeterData* data = this->meterData;
+   unsigned int cpus = data->cpus;
    switch(Meter_name(this)[0]) {
       default:
       case 'A': // All
@@ -137,37 +204,43 @@ static void AllCPUsMeter_getRange(Meter* this, int* start, int* count) {
    }
 }
 
-static void AllCPUsMeter_init(Meter* this) {
-   int cpus = this->pl->cpuCount;
-   if (!this->drawData)
-      this->drawData = xCalloc(cpus, sizeof(Meter*));
-   Meter** meters = (Meter**) this->drawData;
+static void AllCPUsMeter_updateValues(Meter* this) {
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
+   int start, count;
+   AllCPUsMeter_getRange(this, &start, &count);
+   for (int i = 0; i < count; i++)
+      Meter_updateValues(meters[i]);
+}
+
+static void CPUMeterCommonInit(Meter* this, int ncol) {
+   unsigned int cpus = this->pl->existingCPUs;
+   CPUMeterData* data = this->meterData;
+   if (!data) {
+      data = this->meterData = xMalloc(sizeof(CPUMeterData));
+      data->cpus = cpus;
+      data->meters = xCalloc(cpus, sizeof(Meter*));
+   }
+   Meter** meters = data->meters;
    int start, count;
    AllCPUsMeter_getRange(this, &start, &count);
    for (int i = 0; i < count; i++) {
       if (!meters[i])
-         meters[i] = Meter_new(this->pl, start+i+1, (MeterClass*) Class(CPUMeter));
+         meters[i] = Meter_new(this->pl, start + i + 1, (const MeterClass*) Class(CPUMeter));
+
       Meter_init(meters[i]);
    }
+
    if (this->mode == 0)
       this->mode = BAR_METERMODE;
+
    int h = Meter_modes[this->mode]->h;
-   if (strchr(Meter_name(this), '2'))
-      this->h = h * ((count+1) / 2);
-   else
-      this->h = h * count;
+   this->h = h * ((count + ncol - 1) / ncol);
 }
 
-static void AllCPUsMeter_done(Meter* this) {
-   Meter** meters = (Meter**) this->drawData;
-   int start, count;
-   AllCPUsMeter_getRange(this, &start, &count);
-   for (int i = 0; i < count; i++)
-      Meter_delete((Object*)meters[i]);
-}
-
-static void AllCPUsMeter_updateMode(Meter* this, int mode) {
-   Meter** meters = (Meter**) this->drawData;
+static void CPUMeterCommonUpdateMode(Meter* this, int mode, int ncol) {
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
    this->mode = mode;
    int h = Meter_modes[mode]->h;
    int start, count;
@@ -175,32 +248,84 @@ static void AllCPUsMeter_updateMode(Meter* this, int mode) {
    for (int i = 0; i < count; i++) {
       Meter_setMode(meters[i], mode);
    }
-   if (strchr(Meter_name(this), '2'))
-      this->h = h * ((count+1) / 2);
-   else
-      this->h = h * count;
+   this->h = h * ((count + ncol - 1) / ncol);
+}
+
+static void AllCPUsMeter_done(Meter* this) {
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
+   int start, count;
+   AllCPUsMeter_getRange(this, &start, &count);
+   for (int i = 0; i < count; i++)
+      Meter_delete((Object*)meters[i]);
+   free(data->meters);
+   free(data);
+}
+
+static void SingleColCPUsMeter_init(Meter* this) {
+   CPUMeterCommonInit(this, 1);
+}
+
+static void SingleColCPUsMeter_updateMode(Meter* this, int mode) {
+   CPUMeterCommonUpdateMode(this, mode, 1);
+}
+
+static void DualColCPUsMeter_init(Meter* this) {
+   CPUMeterCommonInit(this, 2);
+}
+
+static void DualColCPUsMeter_updateMode(Meter* this, int mode) {
+   CPUMeterCommonUpdateMode(this, mode, 2);
+}
+
+static void QuadColCPUsMeter_init(Meter* this) {
+   CPUMeterCommonInit(this, 4);
+}
+
+static void QuadColCPUsMeter_updateMode(Meter* this, int mode) {
+   CPUMeterCommonUpdateMode(this, mode, 4);
+}
+
+static void OctoColCPUsMeter_init(Meter* this) {
+   CPUMeterCommonInit(this, 8);
+}
+
+static void OctoColCPUsMeter_updateMode(Meter* this, int mode) {
+   CPUMeterCommonUpdateMode(this, mode, 8);
+}
+
+static void CPUMeterCommonDraw(Meter* this, int x, int y, int w, int ncol) {
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
+   int start, count;
+   AllCPUsMeter_getRange(this, &start, &count);
+   int colwidth = (w - ncol) / ncol + 1;
+   int diff = (w - (colwidth * ncol));
+   int nrows = (count + ncol - 1) / ncol;
+   for (int i = 0; i < count; i++) {
+      int d = (i / nrows) > diff ? diff : (i / nrows); // dynamic spacer
+      int xpos = x + ((i / nrows) * colwidth) + d;
+      int ypos = y + ((i % nrows) * meters[0]->h);
+      meters[i]->draw(meters[i], xpos, ypos, colwidth);
+   }
 }
 
 static void DualColCPUsMeter_draw(Meter* this, int x, int y, int w) {
-   Meter** meters = (Meter**) this->drawData;
-   int start, count;
-   int pad = this->pl->settings->headerMargin ? 2 : 0;
-   AllCPUsMeter_getRange(this, &start, &count);
-   int height = (count+1)/2;
-   int startY = y;
-   for (int i = 0; i < height; i++) {
-      meters[i]->draw(meters[i], x, y, (w-pad)/2);
-      y += meters[i]->h;
-   }
-   y = startY;
-   for (int i = height; i < count; i++) {
-      meters[i]->draw(meters[i], x+(w-1)/2+1+(pad/2), y, (w-pad)/2);
-      y += meters[i]->h;
-   }
+   CPUMeterCommonDraw(this, x, y, w, 2);
 }
 
+static void QuadColCPUsMeter_draw(Meter* this, int x, int y, int w) {
+   CPUMeterCommonDraw(this, x, y, w, 4);
+}
+
+static void OctoColCPUsMeter_draw(Meter* this, int x, int y, int w) {
+   CPUMeterCommonDraw(this, x, y, w, 8);
+}
+
+
 static void SingleColCPUsMeter_draw(Meter* this, int x, int y, int w) {
-   Meter** meters = (Meter**) this->drawData;
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
    int start, count;
    AllCPUsMeter_getRange(this, &start, &count);
    for (int i = 0; i < count; i++) {
@@ -209,134 +334,261 @@ static void SingleColCPUsMeter_draw(Meter* this, int x, int y, int w) {
    }
 }
 
-MeterClass CPUMeter_class = {
+
+const MeterClass CPUMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
    .updateValues = CPUMeter_updateValues,
+   .getUiName = CPUMeter_getUiName,
    .defaultMode = BAR_METERMODE,
    .maxItems = CPU_METER_ITEMCOUNT,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "CPU",
    .uiName = "CPU",
    .caption = "CPU",
    .init = CPUMeter_init
 };
 
-MeterClass AllCPUsMeter_class = {
+const MeterClass AllCPUsMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "AllCPUs",
    .uiName = "CPUs (1/1)",
    .description = "CPUs (1/1): all CPUs",
    .caption = "CPU",
    .draw = SingleColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-MeterClass AllCPUs2Meter_class = {
+const MeterClass AllCPUs2Meter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "AllCPUs2",
    .uiName = "CPUs (1&2/2)",
    .description = "CPUs (1&2/2): all CPUs in 2 shorter columns",
    .caption = "CPU",
    .draw = DualColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-MeterClass LeftCPUsMeter_class = {
+const MeterClass LeftCPUsMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "LeftCPUs",
    .uiName = "CPUs (1/2)",
    .description = "CPUs (1/2): first half of list",
    .caption = "CPU",
    .draw = SingleColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-MeterClass RightCPUsMeter_class = {
+const MeterClass RightCPUsMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "RightCPUs",
    .uiName = "CPUs (2/2)",
    .description = "CPUs (2/2): second half of list",
    .caption = "CPU",
    .draw = SingleColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-MeterClass LeftCPUs2Meter_class = {
+const MeterClass LeftCPUs2Meter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "LeftCPUs2",
    .uiName = "CPUs (1&2/4)",
    .description = "CPUs (1&2/4): first half in 2 shorter columns",
    .caption = "CPU",
    .draw = DualColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-MeterClass RightCPUs2Meter_class = {
+const MeterClass RightCPUs2Meter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = CPUMeter_display
    },
+   .updateValues = AllCPUsMeter_updateValues,
    .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
-   .attributes = CPUMeter_attributes, 
+   .attributes = CPUMeter_attributes,
    .name = "RightCPUs2",
    .uiName = "CPUs (3&4/4)",
    .description = "CPUs (3&4/4): second half in 2 shorter columns",
    .caption = "CPU",
    .draw = DualColCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .updateMode = AllCPUsMeter_updateMode,
+   .init = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
+const MeterClass AllCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "AllCPUs4",
+   .uiName = "CPUs (1&2&3&4/4)",
+   .description = "CPUs (1&2&3&4/4): all CPUs in 4 shorter columns",
+   .caption = "CPU",
+   .draw = QuadColCPUsMeter_draw,
+   .init = QuadColCPUsMeter_init,
+   .updateMode = QuadColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
+
+const MeterClass LeftCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "LeftCPUs4",
+   .uiName = "CPUs (1-4/8)",
+   .description = "CPUs (1-4/8): first half in 4 shorter columns",
+   .caption = "CPU",
+   .draw = QuadColCPUsMeter_draw,
+   .init = QuadColCPUsMeter_init,
+   .updateMode = QuadColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
+
+const MeterClass RightCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "RightCPUs4",
+   .uiName = "CPUs (5-8/8)",
+   .description = "CPUs (5-8/8): second half in 4 shorter columns",
+   .caption = "CPU",
+   .draw = QuadColCPUsMeter_draw,
+   .init = QuadColCPUsMeter_init,
+   .updateMode = QuadColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
+
+const MeterClass AllCPUs8Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "AllCPUs8",
+   .uiName = "CPUs (1-8/8)",
+   .description = "CPUs (1-8/8): all CPUs in 8 shorter columns",
+   .caption = "CPU",
+   .draw = OctoColCPUsMeter_draw,
+   .init = OctoColCPUsMeter_init,
+   .updateMode = OctoColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
+
+const MeterClass LeftCPUs8Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "LeftCPUs8",
+   .uiName = "CPUs (1-8/16)",
+   .description = "CPUs (1-8/16): first half in 8 shorter columns",
+   .caption = "CPU",
+   .draw = OctoColCPUsMeter_draw,
+   .init = OctoColCPUsMeter_init,
+   .updateMode = OctoColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
+
+const MeterClass RightCPUs8Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = AllCPUsMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "RightCPUs8",
+   .uiName = "CPUs (9-16/16)",
+   .description = "CPUs (9-16/16): second half in 8 shorter columns",
+   .caption = "CPU",
+   .draw = OctoColCPUsMeter_draw,
+   .init = OctoColCPUsMeter_init,
+   .updateMode = OctoColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};

CPUMeter.h

@@ -1,16 +1,15 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_CPUMeter
 #define HEADER_CPUMeter
 /*
 htop - CPUMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
+
 typedef enum {
    CPU_METER_NICE = 0,
    CPU_METER_NORMAL = 1,
@@ -20,32 +19,35 @@ typedef enum {
    CPU_METER_STEAL = 5,
    CPU_METER_GUEST = 6,
    CPU_METER_IOWAIT = 7,
-   CPU_METER_ITEMCOUNT = 8, // number of entries in this enum
+   CPU_METER_FREQUENCY = 8,
+   CPU_METER_TEMPERATURE = 9,
+   CPU_METER_ITEMCOUNT = 10, // number of entries in this enum
 } CPUMeterValues;
 
+extern const MeterClass CPUMeter_class;
 
-extern int CPUMeter_attributes[];
+extern const MeterClass AllCPUsMeter_class;
 
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
+extern const MeterClass AllCPUs2Meter_class;
 
-extern MeterClass CPUMeter_class;
+extern const MeterClass LeftCPUsMeter_class;
 
-extern MeterClass AllCPUsMeter_class;
+extern const MeterClass RightCPUsMeter_class;
 
-extern MeterClass AllCPUs2Meter_class;
+extern const MeterClass LeftCPUs2Meter_class;
 
-extern MeterClass LeftCPUsMeter_class;
+extern const MeterClass RightCPUs2Meter_class;
 
-extern MeterClass RightCPUsMeter_class;
+extern const MeterClass AllCPUs4Meter_class;
 
-extern MeterClass LeftCPUs2Meter_class;
+extern const MeterClass LeftCPUs4Meter_class;
 
-extern MeterClass RightCPUs2Meter_class;
+extern const MeterClass RightCPUs4Meter_class;
 
+extern const MeterClass AllCPUs8Meter_class;
+
+extern const MeterClass LeftCPUs8Meter_class;
+
+extern const MeterClass RightCPUs8Meter_class;
 
 #endif

CRT.h

@@ -1,61 +1,43 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_CRT
 #define HEADER_CRT
 /*
 htop - CRT.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#if HAVE_SETUID_ENABLED
-#endif
-
-#define ColorIndex(i,j) ((7-i)*8+j)
-
-#define ColorPair(i,j) COLOR_PAIR(ColorIndex(i,j))
-
-#define Black COLOR_BLACK
-#define Red COLOR_RED
-#define Green COLOR_GREEN
-#define Yellow COLOR_YELLOW
-#define Blue COLOR_BLUE
-#define Magenta COLOR_MAGENTA
-#define Cyan COLOR_CYAN
-#define White COLOR_WHITE
-
-#define ColorPairGrayBlack ColorPair(Magenta,Magenta)
-
-#define KEY_WHEELUP KEY_F(20)
-#define KEY_WHEELDOWN KEY_F(21)
-#define KEY_RECLICK KEY_F(22)
-
-//#link curses
+#include "config.h"
 
 #include <stdbool.h>
 
+#include "Macros.h"
+#include "ProvideCurses.h"
+#include "Settings.h"
+
+
 typedef enum TreeStr_ {
-   TREE_STR_HORZ,
    TREE_STR_VERT,
    TREE_STR_RTEE,
    TREE_STR_BEND,
    TREE_STR_TEND,
    TREE_STR_OPEN,
    TREE_STR_SHUT,
-   TREE_STR_COUNT
+   TREE_STR_ASC,
+   TREE_STR_DESC,
+   LAST_TREE_STR
 } TreeStr;
 
-typedef enum ColorSchemes_ {
-   COLORSCHEME_DEFAULT = 0,
-   COLORSCHEME_MONOCHROME = 1,
-   COLORSCHEME_BLACKONWHITE = 2,
-   COLORSCHEME_LIGHTTERMINAL = 3,
-   COLORSCHEME_MIDNIGHT = 4,
-   COLORSCHEME_BLACKNIGHT = 5,
-   COLORSCHEME_BROKENGRAY = 6,
-   LAST_COLORSCHEME = 7,
-} ColorSchemes;
+typedef enum ColorScheme_ {
+   COLORSCHEME_DEFAULT,
+   COLORSCHEME_MONOCHROME,
+   COLORSCHEME_BLACKONWHITE,
+   COLORSCHEME_LIGHTTERMINAL,
+   COLORSCHEME_MIDNIGHT,
+   COLORSCHEME_BLACKNIGHT,
+   COLORSCHEME_BROKENGRAY,
+   LAST_COLORSCHEME
+} ColorScheme;
 
 typedef enum ColorElements_ {
    RESET_COLOR,
@@ -63,31 +45,46 @@ typedef enum ColorElements_ {
    FUNCTION_BAR,
    FUNCTION_KEY,
    FAILED_SEARCH,
+   FAILED_READ,
+   PAUSED,
    PANEL_HEADER_FOCUS,
    PANEL_HEADER_UNFOCUS,
    PANEL_SELECTION_FOCUS,
    PANEL_SELECTION_FOLLOW,
    PANEL_SELECTION_UNFOCUS,
    LARGE_NUMBER,
+   METER_SHADOW,
    METER_TEXT,
    METER_VALUE,
+   METER_VALUE_ERROR,
+   METER_VALUE_IOREAD,
+   METER_VALUE_IOWRITE,
+   METER_VALUE_NOTICE,
+   METER_VALUE_OK,
+   METER_VALUE_WARN,
    LED_COLOR,
    UPTIME,
    BATTERY,
    TASKS_RUNNING,
    SWAP,
+   SWAP_CACHE,
    PROCESS,
    PROCESS_SHADOW,
    PROCESS_TAG,
    PROCESS_MEGABYTES,
+   PROCESS_GIGABYTES,
    PROCESS_TREE,
-   PROCESS_R_STATE,
+   PROCESS_RUN_STATE,
    PROCESS_D_STATE,
    PROCESS_BASENAME,
    PROCESS_HIGH_PRIORITY,
    PROCESS_LOW_PRIORITY,
+   PROCESS_NEW,
+   PROCESS_TOMB,
    PROCESS_THREAD,
    PROCESS_THREAD_BASENAME,
+   PROCESS_COMM,
+   PROCESS_THREAD_COMM,
    BAR_BORDER,
    BAR_SHADOW,
    GRAPH_1,
@@ -96,6 +93,11 @@ typedef enum ColorElements_ {
    MEMORY_BUFFERS,
    MEMORY_BUFFERS_TEXT,
    MEMORY_CACHE,
+   MEMORY_SHARED,
+   HUGEPAGE_1,
+   HUGEPAGE_2,
+   HUGEPAGE_3,
+   HUGEPAGE_4,
    LOAD,
    LOAD_AVERAGE_FIFTEEN,
    LOAD_AVERAGE_FIVE,
@@ -104,44 +106,63 @@ typedef enum ColorElements_ {
    CHECK_MARK,
    CHECK_TEXT,
    CLOCK,
+   DATE,
+   DATETIME,
    HELP_BOLD,
+   HELP_SHADOW,
    HOSTNAME,
    CPU_NICE,
    CPU_NICE_TEXT,
    CPU_NORMAL,
-   CPU_KERNEL,
+   CPU_SYSTEM,
    CPU_IOWAIT,
    CPU_IRQ,
    CPU_SOFTIRQ,
    CPU_STEAL,
    CPU_GUEST,
+   PRESSURE_STALL_TEN,
+   PRESSURE_STALL_SIXTY,
+   PRESSURE_STALL_THREEHUNDRED,
+   ZFS_MFU,
+   ZFS_MRU,
+   ZFS_ANON,
+   ZFS_HEADER,
+   ZFS_OTHER,
+   ZFS_COMPRESSED,
+   ZFS_RATIO,
+   ZRAM,
+   DYNAMIC_GRAY,
+   DYNAMIC_DARKGRAY,
+   DYNAMIC_RED,
+   DYNAMIC_GREEN,
+   DYNAMIC_BLUE,
+   DYNAMIC_CYAN,
+   DYNAMIC_MAGENTA,
+   DYNAMIC_YELLOW,
+   DYNAMIC_WHITE,
    LAST_COLORELEMENT
 } ColorElements;
 
-void CRT_fatalError(const char* note) __attribute__ ((noreturn));
+void CRT_fatalError(const char* note) ATTR_NORETURN;
 
-void CRT_handleSIGSEGV(int sgn);
+void CRT_handleSIGSEGV(int signal) ATTR_NORETURN;
 
-#define KEY_ALT(x) (KEY_F(64 - 26) + (x - 'A'))
+#define KEY_WHEELUP   KEY_F(20)
+#define KEY_WHEELDOWN KEY_F(21)
+#define KEY_RECLICK   KEY_F(22)
+#define KEY_ALT(x)    (KEY_F(64 - 26) + ((x) - 'A'))
 
-
-extern const char *CRT_treeStrAscii[TREE_STR_COUNT];
+extern const char* CRT_degreeSign;
 
 #ifdef HAVE_LIBNCURSESW
 
-extern const char *CRT_treeStrUtf8[TREE_STR_COUNT];
-
 extern bool CRT_utf8;
 
 #endif
 
-extern const char **CRT_treeStr;
+extern const char* const* CRT_treeStr;
 
-extern int CRT_delay;
-
-int* CRT_colors;
-
-extern int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT];
+extern const int* CRT_colors;
 
 extern int CRT_cursorX;
 
@@ -149,46 +170,19 @@ extern int CRT_scrollHAmount;
 
 extern int CRT_scrollWheelVAmount;
 
-char* CRT_termType;
+extern ColorScheme CRT_colorScheme;
 
-// TODO move color scheme to Settings, perhaps?
+void CRT_init(const Settings* settings, bool allowUnicode);
 
-extern int CRT_colorScheme;
+void CRT_done(void);
 
-void *backtraceArray[128];
+void CRT_resetSignalHandlers(void);
 
-#if HAVE_SETUID_ENABLED
+int CRT_readKey(void);
 
-#define DIE(msg) do { CRT_done(); fprintf(stderr, msg); exit(1); } while(0)
+void CRT_disableDelay(void);
 
-void CRT_dropPrivileges();
-
-void CRT_restorePrivileges();
-
-#else
-
-/* Turn setuid operations into NOPs */
-
-#ifndef CRT_dropPrivileges
-#define CRT_dropPrivileges()
-#define CRT_restorePrivileges()
-#endif
-
-#endif
-
-// TODO: pass an instance of Settings instead.
-
-void CRT_init(int delay, int colorScheme);
-
-void CRT_done();
-
-void CRT_fatalError(const char* note);
-
-int CRT_readKey();
-
-void CRT_disableDelay();
-
-void CRT_enableDelay();
+void CRT_enableDelay(void);
 
 void CRT_setColors(int colorScheme);
 

CategoriesPanel.c

@@ -1,38 +1,33 @@
 /*
 htop - CategoriesPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "CategoriesPanel.h"
 
-#include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
-#include "DisplayOptionsPanel.h"
-#include "ColumnsPanel.h"
-#include "ColorsPanel.h"
-#include "AvailableColumnsPanel.h"
-
-#include <assert.h>
+#include <ctype.h>
+#include <stdbool.h>
 #include <stdlib.h>
 
-/*{
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
-#include "ProcessList.h"
+#include "AvailableColumnsPanel.h"
+#include "AvailableMetersPanel.h"
+#include "ColorsPanel.h"
+#include "ColumnsPanel.h"
+#include "DisplayOptionsPanel.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "HeaderLayout.h"
+#include "HeaderOptionsPanel.h"
+#include "ListItem.h"
+#include "Macros.h"
+#include "MetersPanel.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
 
-typedef struct CategoriesPanel_ {
-   Panel super;
-   ScreenManager* scr;
-
-   Settings* settings;
-   Header* header;
-   ProcessList* pl;
-} CategoriesPanel;
-
-}*/
 
 static const char* const CategoriesFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
@@ -43,14 +38,24 @@ static void CategoriesPanel_delete(Object* object) {
    free(this);
 }
 
-void CategoriesPanel_makeMetersPage(CategoriesPanel* this) {
-   MetersPanel* leftMeters = MetersPanel_new(this->settings, "Left column", this->header->columns[0], this->scr);
-   MetersPanel* rightMeters = MetersPanel_new(this->settings, "Right column", this->header->columns[1], this->scr);
-   leftMeters->rightNeighbor = rightMeters;
-   rightMeters->leftNeighbor = leftMeters;
-   Panel* availableMeters = (Panel*) AvailableMetersPanel_new(this->settings, this->header, (Panel*) leftMeters, (Panel*) rightMeters, this->scr, this->pl);
-   ScreenManager_add(this->scr, (Panel*) leftMeters, 20);
-   ScreenManager_add(this->scr, (Panel*) rightMeters, 20);
+static void CategoriesPanel_makeMetersPage(CategoriesPanel* this) {
+   size_t columns = HeaderLayout_getColumns(this->scr->header->headerLayout);
+   MetersPanel** meterPanels = xMallocArray(columns, sizeof(MetersPanel*));
+
+   for (size_t i = 0; i < columns; i++) {
+      char titleBuffer[32];
+      xSnprintf(titleBuffer, sizeof(titleBuffer), "Column %zu", i + 1);
+      meterPanels[i] = MetersPanel_new(this->settings, titleBuffer, this->header->columns[i], this->scr);
+
+      if (i != 0) {
+         meterPanels[i]->leftNeighbor = meterPanels[i - 1];
+         meterPanels[i - 1]->rightNeighbor = meterPanels[i];
+      }
+
+      ScreenManager_add(this->scr, (Panel*) meterPanels[i], 20);
+   }
+
+   Panel* availableMeters = (Panel*) AvailableMetersPanel_new(this->settings, this->header, columns, meterPanels, this->scr, this->pl);
    ScreenManager_add(this->scr, availableMeters, -1);
 }
 
@@ -60,17 +65,36 @@ static void CategoriesPanel_makeDisplayOptionsPage(CategoriesPanel* this) {
 }
 
 static void CategoriesPanel_makeColorsPage(CategoriesPanel* this) {
-   Panel* colors = (Panel*) ColorsPanel_new(this->settings, this->scr);
+   Panel* colors = (Panel*) ColorsPanel_new(this->settings);
    ScreenManager_add(this->scr, colors, -1);
 }
 
 static void CategoriesPanel_makeColumnsPage(CategoriesPanel* this) {
    Panel* columns = (Panel*) ColumnsPanel_new(this->settings);
-   Panel* availableColumns = (Panel*) AvailableColumnsPanel_new(columns);
+   Panel* availableColumns = (Panel*) AvailableColumnsPanel_new(columns, this->settings->dynamicColumns);
    ScreenManager_add(this->scr, columns, 20);
    ScreenManager_add(this->scr, availableColumns, -1);
 }
 
+static void CategoriesPanel_makeHeaderOptionsPage(CategoriesPanel* this) {
+   Panel* colors = (Panel*) HeaderOptionsPanel_new(this->settings, this->scr);
+   ScreenManager_add(this->scr, colors, -1);
+}
+
+typedef void (* CategoriesPanel_makePageFunc)(CategoriesPanel* ref);
+typedef struct CategoriesPanelPage_ {
+   const char* name;
+   CategoriesPanel_makePageFunc ctor;
+} CategoriesPanelPage;
+
+static const CategoriesPanelPage categoriesPanelPages[] = {
+   { .name = "Display options", .ctor = CategoriesPanel_makeDisplayOptionsPage },
+   { .name = "Header layout", .ctor = CategoriesPanel_makeHeaderOptionsPage },
+   { .name = "Meters", .ctor = CategoriesPanel_makeMetersPage },
+   { .name = "Columns", .ctor = CategoriesPanel_makeColumnsPage },
+   { .name = "Colors", .ctor = CategoriesPanel_makeColorsPage },
+};
+
 static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
    CategoriesPanel* this = (CategoriesPanel*) super;
 
@@ -97,7 +121,7 @@ static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
          break;
       }
       default:
-         if (ch < 255 && isalpha(ch))
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
             result = Panel_selectByTyping(super, ch);
          if (result == BREAK_LOOP)
             result = IGNORED;
@@ -107,25 +131,15 @@ static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
       int size = ScreenManager_size(this->scr);
       for (int i = 1; i < size; i++)
          ScreenManager_remove(this->scr, 1);
-      switch (selected) {
-         case 0:
-            CategoriesPanel_makeMetersPage(this);
-            break;
-         case 1:
-            CategoriesPanel_makeDisplayOptionsPage(this);
-            break;
-         case 2:
-            CategoriesPanel_makeColorsPage(this);
-            break;
-         case 3:
-            CategoriesPanel_makeColumnsPage(this);
-            break;
+
+      if (selected >= 0 && (size_t)selected < ARRAYSIZE(categoriesPanelPages)) {
+         categoriesPanelPages[selected].ctor(this);
       }
    }
    return result;
 }
 
-PanelClass CategoriesPanel_class = {
+const PanelClass CategoriesPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = CategoriesPanel_delete
@@ -144,9 +158,10 @@ CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Hea
    this->header = header;
    this->pl = pl;
    Panel_setHeader(super, "Setup");
-   Panel_add(super, (Object*) ListItem_new("Meters", 0));
-   Panel_add(super, (Object*) ListItem_new("Display options", 0));
-   Panel_add(super, (Object*) ListItem_new("Colors", 0));
-   Panel_add(super, (Object*) ListItem_new("Columns", 0));
+   for (size_t i = 0; i < ARRAYSIZE(categoriesPanelPages); i++)
+      Panel_add(super, (Object*) ListItem_new(categoriesPanelPages[i].name, 0));
+
+   ScreenManager_add(scr, super, 16);
+   categoriesPanelPages[0].ctor(this);
    return this;
 }

CategoriesPanel.h

@@ -1,18 +1,18 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_CategoriesPanel
 #define HEADER_CategoriesPanel
 /*
 htop - CategoriesPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "Header.h"
 #include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
 #include "ProcessList.h"
+#include "ScreenManager.h"
+#include "Settings.h"
+
 
 typedef struct CategoriesPanel_ {
    Panel super;
@@ -23,10 +23,7 @@ typedef struct CategoriesPanel_ {
    ProcessList* pl;
 } CategoriesPanel;
 
-
-void CategoriesPanel_makeMetersPage(CategoriesPanel* this);
-
-extern PanelClass CategoriesPanel_class;
+extern const PanelClass CategoriesPanel_class;
 
 CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Header* header, ProcessList* pl);
 

ChangeLog

@@ -1,3 +1,407 @@
+What's new in version 3.1.0
+
+* Updated COPYING file to remove the PLPA exemption (appendix 2)
+  With this change the license is now GPLv2 without any additional wording.
+* Improved default sort ordering
+  Note for users: This may lead to an inverted sort order on startup of
+  htop 3.1.0 compared to previous versions.
+  This is due to what is stored in your htoprc file. Solution: Press I
+  (to invert sort order).
+  This changed setting will be saved by htop on exit as long as it can
+  write to your htoprc file.
+* The compile-time option to cater specifically for running htop as
+  setuid has been removed
+* Add read-only option
+  This allows htop to be run in an non-intrusive fashion where it acts only
+  as a process viewer disabling all functions to manipulate system state.
+  Note: This is not a security feature!
+* Move the code for handling the command line formatting related tasks
+  to be shared across all platforms
+  This means important features like stale binary/library highlighting
+  can now be available on all supported platforms.
+* Make the EXE and COMM columns available on all platforms
+  All supported platforms have the name of the executable (EXE) and a
+  self-chosen thread/command name (COMM) available one way or the other.
+  Moving this column to be handled as a platform-independently available
+  information simplifies the markup of the command line.
+* Introduce configuration file versioning and config_reader_min_version
+  Starting with this version the configuration file contains a version
+  identifying the minimum version of the configuration parser needed to
+  fully understand the configuration file format.
+  Old configuration file formats are automatically upgraded when
+  saving the config file (htoprc).
+* Make the configuration parser friendlier to users (thanks to Bart Bakker)
+  With this change only settings that cannot be parsed properly are
+  reset to their defaults.
+* Improve default display for systems with many CPUs
+* Add the process ELAPSED time column
+* Improve the process STATE column sorting
+* Reworked handling resize and redrawing of the UI
+* Fixed an issue where the LED meter mode could overflow allotted space
+* Allow text mode Meters to span empty neighbors to the right
+* Rescale graph meters when value of total changes
+  (thanks to Michael Schönitzer)
+* Update generic process field display
+  Usually "uninteresting" values in columns like 1 thread, nice value
+  of 0, CPU and memory of 0%, idle/sleeping state, etc. are shown with
+  reduced intensity (dark grey)
+* Option and key ("*") to collapse / expand all branches under PID 1
+  (and PID 2 if kernel threads are shown) (thanks to Krishna Chaitanya)
+* Keep following a process when inverting the sort order, displaying
+  the help screen or hiding/unhiding userland threads.
+  If a thread is currently selected the selection is updated to point
+  to the thread's parent process. (thanks to Gonzalo, et.al.)
+* Reorder process scanning to be performed before updating the display
+  of the meters in the header
+* Always check the user for a process for any changes.
+  This affects multiple platforms that previously didn't correctly handle
+  the user field for a process to change at runtime (e.g. due to seteuid
+  or similar syscalls).
+* Disable mouse option when support is unavailable
+* Support curses libraries without ncurses mouse support
+  (thanks to Santhosh Raju)
+* Support offline and hot-swapping of CPUs on all platforms
+* Fix the CPU Meter for machines with more than 256 CPUs
+* Supplemented the "show updated/deleted executables" feature (red basename)
+  to indicate when linked libraries were updated (yellow basename)
+* Apply the stale binary highlighting for the EXE column in addition to
+  the command line field
+* Add new combined Memory and Swap meter
+* Implement bar and graph mode for NetworkIO Meter
+  (thanks to Michael F. Schönitzer)
+* Rework TTY column to be more consistent across platforms
+* Make the CWD column generally available on all platforms
+  (thanks to Santhosh Raju et. al.)
+* Add Performance Co-Pilot (PCP) platform support
+  This is added via a separate pcp-htop(1) binary which provides remote host
+  analysis, new Meters for any PCP metric and new Columns for any PCP process
+  metric - see the pcp-htop(5) man page for further details.
+  (thanks to Sohaib Mohamed)
+* Add Linux columns and key bindings for process autogroup identifier
+  and nice value
+* Change available and used memory reporting on Linux to be based on
+  MemAvailable (Kernel 3.14+) (thanks to Chris Cheney and Tomas Wido)
+* Add a new SysArchMeter showing kernel and platform information
+  (thanks to ahgamut)
+* Linux memory usage explicitly treats tmpfs memory usage as shared memory
+  This is to make memory used by tmpfs visible as this cannot be freed
+  unlike normal filesystem cache data.
+* Exclude zram devices when calculating DiskIO on Linux
+* Use PATH lookup for systemctl in systemd meter (thanks to Scott Olson)
+* Add native platform support for NetBSD
+  This allows htop to run on NetBSD without the need for active Linux
+  emulation of the procfs filesystem.
+  (thanks to Santhosh Raju and Nia Alarie)
+* Add NetworkIO, DiskIO, CPU frequency, and battery meter support on NetBSD
+  (thanks to Nia Alarie)
+* Fix NetBSD display of in-use and cached memory (thanks to Nia Alarie)
+* Rework NetBSD CPU and memory accounting (thanks to Santhosh Raju)
+* Fix NetBSD accounting of user and kernel threads (thanks to Santhosh Raju)
+* Initial work to allow building with default libcurses on NetBSD
+  (thanks to Santhosh Raju)
+* FreeBSD updates - implement process majflt and processor column values
+* Add FreeBSD support for CPU frequency and temperature
+* Fixes and cleanups for ZFS Meters and metrics
+* Correctly color the ZFS ARC ratio (thanks to Ross Williams)
+* Bugfixes related to CPU time display/calculations for darwin on M1 systems
+  (thanks to Alexander Momchilov)
+* Harmonize the handling of multiple batteries across different platforms.
+  The system is now considered to run on AC if at least one power supply
+  marked as AC is found in the system.
+  Battery capacity is summed up over all batteries found.
+  This also changes the old behavior that batteries reported by the
+  system after the first AC adapter where sometimes ignored.
+* Correctly handle multiple batteries on Darwin.
+  Resolves a possible memory leak on systems with multiple batteries.
+* Handle Linux Shmem being part of Cached in the MemoryMeter
+* Add SwapCached to the Linux swap meter (thanks to David Zarzycki)
+* Convert process time to days if applicable (thanks to David Zarzycki)
+* Always show the number of threads in the TaskMeter, even when threads
+  are not shown in the process list
+* Fix Linux --drop-capabilities option handling
+* Correctly detect failure to initialize Linux boottime
+* Overhaul the Linux memory fields to partition them like free(1) now does
+* Improve the Linux process I/O column values
+* Rework the libsensors parsing on Linux
+* Update the MemoryMeter to display shared memory
+* Update OpenBSD platform - implement additional columns, scan LWP,
+  proper markup for STATE, show CPU frequency
+* Fix the tree view on OpenBSD when hiding kernel threads
+* Remove old InfoScreen lines before re-scanning (thanks to Øystein Hiåsen)
+* Document historic naming of Light-Weight Processes column aka threads
+* Improve user interaction when the last process entry is selected
+* Draw the panel header on the TraceScreen (thanks to Youngjae Lee)
+* Add mouse wheel scroll and fix mouse selection on the InfoScreen
+  (thanks to Youngjae Lee)
+* Add a HugepageMeter and subtract hugepages from normal memory
+* Display wide characters in LED meters and restore non-wide ncurses support
+* Add command line option to drop Linux capabilities
+* Support scheduler affinity on platforms beyond Linux
+* Report on any failure to write the configuration file
+* Cache stderr to be able to print assert messages.
+  These messages are shown in case htop terminates unexpectedly.
+* Print current settings on crash
+* Reset signal handlers on program exit
+* Add configure script option to create a static htop binary
+* Resolved longer-standing compilation issues on Solaris/Illumos
+* Check for availability of set_escdelay in configure
+  (thanks to Stefan Polluks)
+* Build system updates for autotools 2.70
+
+What's new in version 3.0.5
+
+* BUGFIX / SECURITY: InfoScreen: fix uncontrolled format string
+* BUGFIX: Improve white text in the Light Terminal colour scheme
+  (both of the above thanks to V)
+* Enable the function bar on the main screen to be hidden (see Setup -> Display options)
+* BUGFIX: Reduce layout issues esp. around printing wide characters (not complete yet)
+* BUGFIX: Make the follow function exit cleanly after followed process died
+* Solaris: make Process callbacks static
+* Update help and man page for improved -t / -s options
+* Drop usage of formatted error messages from <err.h>
+* Show arrow indicating order of sorted process column
+* Lots of plumbing around the internal Hashtable, hardening and code cleanups
+* LibSensors: add support for Ryzen CPUs
+  (thanks to Matej Dian)
+* BUGFIX: Fix CPU percentage on M1 silicon Macs
+  (thanks to Luke Groeninger)
+* LoadMeter: dynamically adjust color and total of bar
+* Find libsensors.so.4 for Fedora and friends
+* Add support to display CPU frequencies on Solarish platforms
+  (thanks to Dominik Hassler)
+* Enable going back to previous search matches (Shift-F3)
+* Added keybind 'N' for sorting by PID (drops 'n'/'N' as not used before much)
+  (thanks to Jake Mannens)
+
+What's new in version 3.0.4
+
+* Separate tree and list sort orders
+* Invert Process_compare so that superclass matches run first
+  (thanks to Hisham Muhammad)
+* Unhardcode Mac OS tick-to-milliseconds conversion
+  (thanks to Alexander Momchilov)
+* Check if clock_gettime needs linking of librt
+* Define O_PATH if not already defined
+  (thanks to Chris Burr)
+* Add column on Mac for processes running under translation
+  (thanks to Dániel Bakai)
+* Configure check for additional linker flags for keypad(3)
+* PSI Meter: constant width and only print ten-duration as bar
+* Sort in paused mode after inverting sort order
+* Handle absence of package CPU temperature
+* Meter: restore non-wide-character build
+* LibSensors: restore temperature for Raspberry Pi
+* MainPanel: do not reset hideProcessSelection on KEY_SHUFFLE
+* BarMeter: rework text padding
+* Panel: rework drawing of FunctionBar
+* Meter: fix artifacts with very tiny width
+* DragonFlyBSD updates
+* BUGFIX: Fix dlopen issue for libsensors5 for some platforms
+* BUGFIX: Fix broken tree display on inverted sort order
+* BUGFIX: Fix pause mode ("Z") in tree view
+* BUGFIX: Correct timebase for non-x86 CPUs on Darwin
+* BUGFIX: Avoid NULL dereference on zombie processes
+* Document dynamic bindings and assumed external configuration
+* Update key mapping documentation for sorting
+
+What's new in version 3.0.3
+
+* Process sorting in 'tree' mode
+  (thanks to Maxim Zhiburt)
+* Improved command display/sort functionality
+  (thanks to Narendran Gopalakrishnan)
+* Add screen for active file locks
+  (thanks to Fynn J. Wulf)
+* Calculate library size (M_LRS column) from maps file
+  (thanks to Fynn J. Wulf)
+* Add a Zram meter
+  (thanks to Murloc Knight)
+* Add Linux cwd process column
+* Dynamically load libsensors at runtime
+* Improve PressureStall Meter display strings
+* Hide process selection on ESC
+* Fully support non-ascii characters in Meter-Bar
+* Add support to change numeric options in settings screen
+* Rename virtual memory column from M_SIZE to M_VIRT
+* Add process column for normalized CPU usage
+* Show CPU temperature in CPU meter
+* Drop hideThreads Setting
+* Add a systemd meter
+* Add a network IO meter
+* Add a SELinux meter
+* Compress size of default FunctionBar
+* Updates to the OpenFiles screen
+* Continue updating header data in paused mode
+* BUGFIX: Handle data wraparounds in IO meters
+* BUGFIX: Update InfoScreen content on resize
+* Add security attribute process column
+* Add DiskIOMeter for IO read/write usage
+* Read CPU frequency from sysfs by default
+* Add Linux process column for context switches
+* Several FreeBSD and Mac OS X platform updates
+  (thanks to Christian Göttsche)
+* Add process environment for FreeBSD
+  (thanks to Ross Williams)
+* Parse POWER_SUPPLY_CAPACITY for Linux Battery meter
+  (thanks to Jan Palus)
+* Add octuple-column CPU meters.
+* BUGFIX: On Linux consider ZFS ARC to be cache
+  (thanks to @multi)
+* BUGFIX: Limit screen title length to window width
+* Show selected command wrapped in a separate window
+  (thanks to @ryenus)
+* Allow to pass '/' for item search
+* Document implicit incremental search
+* Handle 'q' as quit if first character
+* Avoid expensive build of process tree when not using it
+* Include documentation for COMM and EXE
+* Distinguish display of no permissions for reading M_LRS
+* Only calculate M_LRS size every 2 seconds
+* Improvements to comm / cmdline display functionality
+* Merged view for COMM, EXE and cmdline
+  (thanks to Narendran Gopalakrishnan and Benny Baumann)
+* Consistent kernel thread display for COMM/EXE columns
+* Central fault handling for all platforms
+* Handle parsing envID & VPid from process status file
+* Use threshold for display of guest/steal/irq meters
+* Enhance highlighting of semi-large and large numbers
+* Documentation on the repository style guide
+  (thanks to Benny Baumann)
+* Align processor identifier to the right
+  (thanks to Christian Hesse)
+* Document M_PSS, M_PSSWP, M_SWAP in man page
+* Add Date and DateTime meters
+  (thanks to Michael F. Schönitzer)
+* BUGFIX: Fix Solaris 11.4 due to missing ZFS ARC kstats
+  (thanks to @senjan)
+* Code hardening, speedups, fd and memory leak fixes
+  (thanks to Christian Göttsche and Benny Baumann)
+* Number CPUs from zero by default
+  (thanks to Zev Weiss)
+* Remove residual python checks during the build process
+  (thanks to Stephen Gregoratto)
+
+What's new in version 3.0.2
+
+* BUGFIX: Drop 'vim_mode' - several issues, needs rethink
+* BUGFIX: fix regression in -u optional-argument handling
+* Build system rework to remove python, header generation
+  (thanks to Zev Weiss and Hugo Musso Gualandi)
+* BUGFIX: report nice level correctly on Solaris
+  (thanks to Dominik Hassler)
+* CI, code quality improvements
+  (thanks to Tobias Kortkamp, Christian Hesse, Benny Baumann)
+
+What's new in version 3.0.1
+
+* Coverity fixes, CI improvements, documentation updates
+* BUGFIX: Fix early exit with longer sysfs battery paths
+* BUGFIX: Improve OOM output, fix sorting
+  (thanks to Christian Göttsche)
+* Rework check buttons and tree open/closed
+  (thanks to Bert Wesarg)
+* Add -U/--no-unicode option to disable unicode
+  (thanks to Christian Hesse)
+* Improvements to the affinity panel
+  (thanks to Bert Wesarg)
+
+What's new in version 3.0.0
+
+* New maintainers - after a prolonged period of inactivity
+  from Hisham, the creator and original maintainer, a team
+  of community maintainers have volunteered to take over a
+  fork at https://htop.dev and https://github.com/htop-dev
+  to keep the project going.
+* Support ZFS ARC statistics
+  (thanks to Ross Williams)
+* Support more than 2 smaller CPU meter columns
+  (thanks to Christoph Budziszewski)
+* Support Linux proportional set size metrics
+  (thanks to @linvinus, @ntninja and @himikof)
+* Support Linux pressure stall information metrics
+  (thanks to Ran Benita)
+* New display option to show CPU frequency in CPU meters
+  (thanks to Arnav Singh)
+* Update Linux sysfs battery discovery for recent kernels
+  (thanks to @smattie)
+* Add hardware topology information in the affinity panel
+  (thanks to Bert Wesarg)
+* Add timestamp reporting to the strace screen
+  (thanks to Mario Harjac)
+* Add simple, optional vim key mapping mode
+  (thanks to Daniel Flanagan)
+* Added an option to disable the mouse
+  (thanks to MartinJM)
+* Add Solaris11 compatibility
+  (thanks to Jan Senolt)
+* Without an argument -u uses $USER value automatically
+  (thanks to @solanav)
+* Support less(1) search navigation shortcuts
+  (thanks to @syrrim)
+* Update the FreeBSD maximum PID to match FreeBSD change
+  (thanks to @multiplexd)
+* Report values larger than 100 terabytes
+  (thanks to @adrien1018)
+* Widen ST_UID (UID) column to allow for UIDs > 9999
+  (thanks to DLange)
+* BUGFIX: fix makefiles for building with clang
+  (thanks to Jorge Pereira)
+* BUGFIX: fix <sys/sysmacros.h> major() usage
+  (thanks to @wataash and Kang-Che Sung)
+* BUGFIX: fix the STARTTIME column on FreeBSD
+  (thanks to Rob Crowston)
+* BUGFIX: truncate overwide jail names on FreeBSD
+  (thanks to Rob Crowston)
+* BUGFIX: fix reported memory values on FreeBSD
+  (thanks to Tobias Kortkamp)
+* BUGFIX: fix reported CPU meter values on OpenBSD
+  (thanks to @motet-a)
+* BUGFIX: correctly identify other types of zombie process
+  (thanks to @joder)
+* BUGFIX: improve follow-process handling in some situations
+  (thanks to @wangqr)
+* BUGFIX: fix custom meters reverting to unexpected setting
+  (thanks to @wangqr)
+* BUGFIX: close pipe after running lsof(1)
+  (thanks to Jesin)
+* BUGFIX: meters honour setting of counting CPUs from 0/1
+  (thanks to @rnsanchez)
+
+What's new in version 2.2.0
+
+* Solaris/Illumos/OpenIndiana support
+  (thanks to Guy M. Broome)
+* -t/--tree flag for starting in tree-view mode
+  (thanks to Daniel Flanagan)
+* macOS: detects High Sierra version to avoid OS bug
+  (thanks to Pierre Malhaire)
+* OpenBSD: read battery data
+  (thanks to @nerd972)
+* Various automake and build improvements
+  (thanks to Kang-Che Sung)
+* Check for pkg-config when building with --enable-delayacct
+  (thanks to @florian2833z for the report)
+* Avoid some bashisms in configure script
+  (thanks to Jesin)
+* Use CFLAGS from ncurses*-config if present
+  (thanks to Michael Klein)
+* Header generator supports non-UTF-8 environments
+  (thanks to @volkov-am)
+* Linux: changed detection of kernel threads
+* Collapse current subtree pressing Backspace
+* BUGFIX: fix behavior of SYSCR column
+  (thanks to Marc Kleine-Budde)
+* BUGFIX: obtain exit code of lsof correctly
+  (thanks to @wangqr)
+* BUGFIX: fix crash with particular keycodes
+  (thanks to Wellington Torrejais da Silva for the report)
+* BUGFIX: fix issue with small terminals
+  (thanks to Daniel Elf for the report)
+* BUGFIX: fix terminal color issues
+  (thanks to Kang-Che Sung for the report)
+* BUGFIX: preserve LDFLAGS when building
+  (thanks to Lance Frederickson for the report)
+* BUGFIX: fixed overflow for systems with >= 100 signals
 
 What's new in version 2.1.0
 
@@ -123,7 +527,7 @@ What's new in version 1.0.2
 What's new in version 1.0.1
 
 * Move .htoprc to XDG-compliant path ~/.config/htop/htoprc,
-  respecting $XDG_CONFIG_HOME 
+  respecting $XDG_CONFIG_HOME
   (thanks to Hadzhimurad Ustarkhan for the suggestion.)
 * Safer behavior on the kill screen, to make it harder to kill the wrong process.
 * Fix for building in FreeBSD 8.2
@@ -511,7 +915,7 @@ What's new in version 0.3.1
 
 What's new in version 0.3
 
-* BUGFIX: no dirt left on screen on horizontal scrolling 
+* BUGFIX: no dirt left on screen on horizontal scrolling
 * Signal selection on "kill" command
 * Color-coding for users, nice and process status
 * "Follow" function

CheckItem.c

@@ -1,80 +0,0 @@
-/*
-htop - CheckItem.c
-(C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
-in the source distribution for its full text.
-*/
-
-#include "CheckItem.h"
-
-#include "CRT.h"
-
-#include <assert.h>
-#include <stdlib.h>
-
-/*{
-#include "Object.h"
-
-typedef struct CheckItem_ {
-   Object super;
-   char* text;
-   bool* ref;
-   bool value;
-} CheckItem;
-
-}*/
-
-static void CheckItem_delete(Object* cast) {
-   CheckItem* this = (CheckItem*)cast;
-   assert (this != NULL);
-
-   free(this->text);
-   free(this);
-}
-
-static void CheckItem_display(Object* cast, RichString* out) {
-   CheckItem* this = (CheckItem*)cast;
-   assert (this != NULL);
-   RichString_write(out, CRT_colors[CHECK_BOX], "[");
-   if (CheckItem_get(this))
-      RichString_append(out, CRT_colors[CHECK_MARK], "x");
-   else
-      RichString_append(out, CRT_colors[CHECK_MARK], " ");
-   RichString_append(out, CRT_colors[CHECK_BOX], "] ");
-   RichString_append(out, CRT_colors[CHECK_TEXT], this->text);
-}
-
-ObjectClass CheckItem_class = {
-   .display = CheckItem_display,
-   .delete = CheckItem_delete
-};
-
-CheckItem* CheckItem_newByRef(char* text, bool* ref) {
-   CheckItem* this = AllocThis(CheckItem);
-   this->text = text;
-   this->value = false;
-   this->ref = ref;
-   return this;
-}
-
-CheckItem* CheckItem_newByVal(char* text, bool value) {
-   CheckItem* this = AllocThis(CheckItem);
-   this->text = text;
-   this->value = value;
-   this->ref = NULL;
-   return this;
-}
-
-void CheckItem_set(CheckItem* this, bool value) {
-   if (this->ref) 
-      *(this->ref) = value;
-   else
-      this->value = value;
-}
-
-bool CheckItem_get(CheckItem* this) {
-   if (this->ref) 
-      return *(this->ref);
-   else
-      return this->value;
-}

CheckItem.h

@@ -1,32 +0,0 @@
-/* Do not edit this file. It was automatically generated. */
-
-#ifndef HEADER_CheckItem
-#define HEADER_CheckItem
-/*
-htop - CheckItem.h
-(C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
-in the source distribution for its full text.
-*/
-
-#include "Object.h"
-
-typedef struct CheckItem_ {
-   Object super;
-   char* text;
-   bool* ref;
-   bool value;
-} CheckItem;
-
-
-extern ObjectClass CheckItem_class;
-
-CheckItem* CheckItem_newByRef(char* text, bool* ref);
-
-CheckItem* CheckItem_newByVal(char* text, bool value);
-
-void CheckItem_set(CheckItem* this, bool value);
-
-bool CheckItem_get(CheckItem* this);
-
-#endif

ClockMeter.c

@@ -1,33 +1,36 @@
 /*
 htop - ClockMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "ClockMeter.h"
 
-#include "CRT.h"
-
 #include <time.h>
+#include <sys/time.h>
 
-/*{
-#include "Meter.h"
-}*/
+#include "CRT.h"
+#include "Object.h"
+#include "ProcessList.h"
 
-int ClockMeter_attributes[] = {
+
+static const int ClockMeter_attributes[] = {
    CLOCK
 };
 
-static void ClockMeter_updateValues(Meter* this, char* buffer, int size) {
-   time_t t = time(NULL);
+static void ClockMeter_updateValues(Meter* this) {
+   const ProcessList* pl = this->pl;
+
    struct tm result;
-   struct tm *lt = localtime_r(&t, &result);
+   const struct tm* lt = localtime_r(&pl->realtime.tv_sec, &result);
    this->values[0] = lt->tm_hour * 60 + lt->tm_min;
-   strftime(buffer, size, "%H:%M:%S", lt);
+   strftime(this->txtBuffer, sizeof(this->txtBuffer), "%H:%M:%S", lt);
 }
 
-MeterClass ClockMeter_class = {
+const MeterClass ClockMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete

ClockMeter.h

@@ -1,18 +1,15 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ClockMeter
 #define HEADER_ClockMeter
 /*
 htop - ClockMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
-extern int ClockMeter_attributes[];
 
-extern MeterClass ClockMeter_class;
+extern const MeterClass ClockMeter_class;
 
 #endif

ColorsPanel.c

@@ -1,18 +1,23 @@
 /*
 htop - ColorsPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "ColorsPanel.h"
 
-#include "CRT.h"
-#include "CheckItem.h"
-
 #include <assert.h>
+#include <stdbool.h>
 #include <stdlib.h>
-#include <string.h>
+
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Macros.h"
+#include "Object.h"
+#include "OptionItem.h"
+#include "ProvideCurses.h"
+
 
 // TO ADD A NEW SCHEME:
 // * Increment the size of bool check in ColorsPanel.h
@@ -20,19 +25,6 @@ in the source distribution for its full text.
 // * Add a define in CRT.h that matches the order of the array
 // * Add the colors in CRT_setColors
 
-/*{
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
-
-typedef struct ColorsPanel_ {
-   Panel super;
-
-   Settings* settings;
-   ScreenManager* scr;
-} ColorsPanel;
-
-}*/
 
 static const char* const ColorsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
@@ -56,9 +48,9 @@ static void ColorsPanel_delete(Object* object) {
 
 static HandlerResult ColorsPanel_eventHandler(Panel* super, int ch) {
    ColorsPanel* this = (ColorsPanel*) super;
-   
+
    HandlerResult result = IGNORED;
-   int mark = Panel_getSelectedIndex(super);
+   int mark;
 
    switch(ch) {
    case 0x0a:
@@ -67,27 +59,26 @@ static HandlerResult ColorsPanel_eventHandler(Panel* super, int ch) {
    case KEY_MOUSE:
    case KEY_RECLICK:
    case ' ':
+      mark = Panel_getSelectedIndex(super);
+      assert(mark >= 0);
+      assert(mark < LAST_COLORSCHEME);
       for (int i = 0; ColorSchemeNames[i] != NULL; i++)
          CheckItem_set((CheckItem*)Panel_get(super, i), false);
       CheckItem_set((CheckItem*)Panel_get(super, mark), true);
+
       this->settings->colorScheme = mark;
-      result = HANDLED;
+      this->settings->changed = true;
+
+      CRT_setColors(mark);
+      clear();
+
+      result = HANDLED | REDRAW;
    }
 
-   if (result == HANDLED) {
-      this->settings->changed = true;
-      const Header* header = this->scr->header;
-      CRT_setColors(mark);
-      Panel* menu = (Panel*) Vector_get(this->scr->panels, 0);
-      Header_draw(header);
-      RichString_setAttr(&(super->header), CRT_colors[PANEL_HEADER_FOCUS]);
-      RichString_setAttr(&(menu->header), CRT_colors[PANEL_HEADER_UNFOCUS]);
-      ScreenManager_resize(this->scr, this->scr->x1, header->height, this->scr->x2, this->scr->y2);
-   }
    return result;
 }
 
-PanelClass ColorsPanel_class = {
+const PanelClass ColorsPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = ColorsPanel_delete
@@ -95,18 +86,19 @@ PanelClass ColorsPanel_class = {
    .eventHandler = ColorsPanel_eventHandler
 };
 
-ColorsPanel* ColorsPanel_new(Settings* settings, ScreenManager* scr) {
+ColorsPanel* ColorsPanel_new(Settings* settings) {
    ColorsPanel* this = AllocThis(ColorsPanel);
    Panel* super = (Panel*) this;
    FunctionBar* fuBar = FunctionBar_new(ColorsFunctions, NULL, NULL);
    Panel_init(super, 1, 1, 1, 1, Class(CheckItem), true, fuBar);
 
    this->settings = settings;
-   this->scr = scr;
+
+   assert(ARRAYSIZE(ColorSchemeNames) == LAST_COLORSCHEME + 1);
 
    Panel_setHeader(super, "Colors");
    for (int i = 0; ColorSchemeNames[i] != NULL; i++) {
-      Panel_add(super, (Object*) CheckItem_newByVal(xStrdup(ColorSchemeNames[i]), false));
+      Panel_add(super, (Object*) CheckItem_newByVal(ColorSchemeNames[i], false));
    }
    CheckItem_set((CheckItem*)Panel_get(super, settings->colorScheme), true);
    return this;

ColorsPanel.h

@@ -1,34 +1,24 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ColorsPanel
 #define HEADER_ColorsPanel
 /*
 htop - ColorsPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-// TO ADD A NEW SCHEME:
-// * Increment the size of bool check in ColorsPanel.h
-// * Add the entry in the ColorSchemeNames array below in the file
-// * Add a define in CRT.h that matches the order of the array
-// * Add the colors in CRT_setColors
-
 #include "Panel.h"
 #include "Settings.h"
-#include "ScreenManager.h"
+
 
 typedef struct ColorsPanel_ {
    Panel super;
 
    Settings* settings;
-   ScreenManager* scr;
 } ColorsPanel;
 
+extern const PanelClass ColorsPanel_class;
 
-extern PanelClass ColorsPanel_class;
-
-ColorsPanel* ColorsPanel_new(Settings* settings, ScreenManager* scr);
+ColorsPanel* ColorsPanel_new(Settings* settings);
 
 #endif

ColumnsPanel.c

@@ -1,33 +1,26 @@
 /*
 htop - ColumnsPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "ColumnsPanel.h"
-#include "Platform.h"
-
-#include "StringUtils.h"
-#include "ListItem.h"
-#include "CRT.h"
 
 #include <assert.h>
-#include <stdlib.h>
 #include <ctype.h>
+#include <stdlib.h>
 
-/*{
-#include "Panel.h"
-#include "Settings.h"
+#include "CRT.h"
+#include "DynamicColumn.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "Process.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct ColumnsPanel_ {
-   Panel super;
-
-   Settings* settings;
-   bool moving;
-} ColumnsPanel;
-
-}*/
 
 static const char* const ColumnsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  ", NULL};
 
@@ -40,7 +33,7 @@ static void ColumnsPanel_delete(Object* object) {
 
 static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
    ColumnsPanel* const this = (ColumnsPanel*) super;
-   
+
    int selected = Panel_getSelectedIndex(super);
    HandlerResult result = IGNORED;
    int size = Panel_size(super);
@@ -54,8 +47,10 @@ static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
       {
          if (selected < size - 1) {
             this->moving = !(this->moving);
-            Panel_setSelectionColor(super, this->moving ? CRT_colors[PANEL_SELECTION_FOLLOW] : CRT_colors[PANEL_SELECTION_FOCUS]);
-            ((ListItem*)Panel_getSelected(super))->moving = this->moving;
+            Panel_setSelectionColor(super, this->moving ? PANEL_SELECTION_FOLLOW : PANEL_SELECTION_FOCUS);
+            ListItem* selectedItem = (ListItem*) Panel_getSelected(super);
+            if (selectedItem)
+               selectedItem->moving = this->moving;
             result = HANDLED;
          }
          break;
@@ -87,7 +82,7 @@ static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
       case ']':
       case '+':
       {
-         if (selected < size - 2) 
+         if (selected < size - 2)
             Panel_moveSelectedDown(super);
          result = HANDLED;
          break;
@@ -103,7 +98,7 @@ static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
       }
       default:
       {
-         if (ch < 255 && isalpha(ch))
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
             result = Panel_selectByTyping(super, ch);
          if (result == BREAK_LOOP)
             result = IGNORED;
@@ -115,7 +110,7 @@ static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
    return result;
 }
 
-PanelClass ColumnsPanel_class = {
+const PanelClass ColumnsPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = ColumnsPanel_delete
@@ -123,6 +118,26 @@ PanelClass ColumnsPanel_class = {
    .eventHandler = ColumnsPanel_eventHandler
 };
 
+static void ColumnsPanel_add(Panel* super, unsigned int key, Hashtable* columns) {
+   const char* name;
+   if (key < LAST_PROCESSFIELD) {
+      name = Process_fields[key].name;
+   } else {
+      const DynamicColumn* column = Hashtable_get(columns, key);
+      assert(column);
+      if (!column) {
+         name = NULL;
+      } else {
+         name = column->caption ? column->caption : column->heading;
+         if (!name)
+            name = column->name; /* name is a mandatory field */
+      }
+   }
+   if (name == NULL)
+      name = "- ";
+   Panel_add(super, (Object*) ListItem_new(name, key));
+}
+
 ColumnsPanel* ColumnsPanel_new(Settings* settings) {
    ColumnsPanel* this = AllocThis(ColumnsPanel);
    Panel* super = (Panel*) this;
@@ -133,35 +148,25 @@ ColumnsPanel* ColumnsPanel_new(Settings* settings) {
    this->moving = false;
    Panel_setHeader(super, "Active Columns");
 
-   ProcessField* fields = this->settings->fields;
-   for (; *fields; fields++) {
-      if (Process_fields[*fields].name) {
-         Panel_add(super, (Object*) ListItem_new(Process_fields[*fields].name, *fields));
-      }
-   }
-   return this;
-}
+   Hashtable* dynamicColumns = settings->dynamicColumns;
+   const ProcessField* fields = settings->fields;
+   for (; *fields; fields++)
+      ColumnsPanel_add(super, *fields, dynamicColumns);
 
-int ColumnsPanel_fieldNameToIndex(const char* name) {
-   for (int j = 1; j <= Platform_numberOfFields; j++) {
-      if (String_eq(name, Process_fields[j].name)) {
-         return j;
-      }
-   }
-   return -1;
+   return this;
 }
 
 void ColumnsPanel_update(Panel* super) {
    ColumnsPanel* this = (ColumnsPanel*) super;
    int size = Panel_size(super);
    this->settings->changed = true;
-   this->settings->fields = xRealloc(this->settings->fields, sizeof(ProcessField) * (size+1));
+   this->settings->fields = xRealloc(this->settings->fields, sizeof(ProcessField) * (size + 1));
    this->settings->flags = 0;
    for (int i = 0; i < size; i++) {
       int key = ((ListItem*) Panel_get(super, i))->key;
       this->settings->fields[i] = key;
-      this->settings->flags |= Process_fields[key].flags;
+      if (key < LAST_PROCESSFIELD)
+         this->settings->flags |= Process_fields[key].flags;
    }
    this->settings->fields[size] = 0;
 }
-

ColumnsPanel.h

@@ -1,17 +1,18 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ColumnsPanel
 #define HEADER_ColumnsPanel
 /*
 htop - ColumnsPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+
 #include "Panel.h"
 #include "Settings.h"
 
+
 typedef struct ColumnsPanel_ {
    Panel super;
 
@@ -19,14 +20,10 @@ typedef struct ColumnsPanel_ {
    bool moving;
 } ColumnsPanel;
 
-
-extern PanelClass ColumnsPanel_class;
+extern const PanelClass ColumnsPanel_class;
 
 ColumnsPanel* ColumnsPanel_new(Settings* settings);
 
-int ColumnsPanel_fieldNameToIndex(const char* name);
-
 void ColumnsPanel_update(Panel* super);
 
-
 #endif

CommandLine.c

@@ -0,0 +1,400 @@
+/*
+htop - CommandLine.c
+(C) 2004-2011 Hisham H. Muhammad
+(C) 2020-2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "CommandLine.h"
+
+#include <assert.h>
+#include <getopt.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "Action.h"
+#include "CRT.h"
+#include "DynamicColumn.h"
+#include "DynamicMeter.h"
+#include "Hashtable.h"
+#include "Header.h"
+#include "IncSet.h"
+#include "MainPanel.h"
+#include "MetersPanel.h"
+#include "Panel.h"
+#include "Platform.h"
+#include "Process.h"
+#include "ProcessList.h"
+#include "ProvideCurses.h"
+#include "ScreenManager.h"
+#include "Settings.h"
+#include "UsersTable.h"
+#include "XUtils.h"
+
+
+static void printVersionFlag(const char* name) {
+   printf("%s " VERSION "\n", name);
+}
+
+static void printHelpFlag(const char* name) {
+   printf("%s " VERSION "\n"
+          COPYRIGHT "\n"
+          "Released under the GNU GPLv2.\n\n"
+          "-C --no-color                   Use a monochrome color scheme\n"
+          "-d --delay=DELAY                Set the delay between updates, in tenths of seconds\n"
+          "-F --filter=FILTER              Show only the commands matching the given filter\n"
+          "-h --help                       Print this help screen\n"
+          "-H --highlight-changes[=DELAY]  Highlight new and old processes\n"
+          "-M --no-mouse                   Disable the mouse\n"
+          "-p --pid=PID[,PID,PID...]       Show only the given PIDs\n"
+          "   --readonly                   Disable all system and process changing features\n"
+          "-s --sort-key=COLUMN            Sort by COLUMN in list view (try --sort-key=help for a list)\n"
+          "-t --tree                       Show the tree view (can be combined with -s)\n"
+          "-u --user[=USERNAME]            Show only processes for a given user (or $USER)\n"
+          "-U --no-unicode                 Do not use unicode but plain ASCII\n"
+          "-V --version                    Print version info\n", name);
+   Platform_longOptionsUsage(name);
+   printf("\n"
+          "Long options may be passed with a single dash.\n\n"
+          "Press F1 inside %s for online help.\n"
+          "See 'man %s' for more information.\n", name, name);
+}
+
+// ----------------------------------------
+
+typedef struct CommandLineSettings_ {
+   Hashtable* pidMatchList;
+   char* commFilter;
+   uid_t userId;
+   int sortKey;
+   int delay;
+   bool useColors;
+   bool enableMouse;
+   bool treeView;
+   bool allowUnicode;
+   bool highlightChanges;
+   int highlightDelaySecs;
+   bool readonly;
+} CommandLineSettings;
+
+static CommandLineSettings parseArguments(const char* program, int argc, char** argv) {
+
+   CommandLineSettings flags = {
+      .pidMatchList = NULL,
+      .commFilter = NULL,
+      .userId = (uid_t)-1, // -1 is guaranteed to be an invalid uid_t (see setreuid(2))
+      .sortKey = 0,
+      .delay = -1,
+      .useColors = true,
+      .enableMouse = true,
+      .treeView = false,
+      .allowUnicode = true,
+      .highlightChanges = false,
+      .highlightDelaySecs = -1,
+      .readonly = false,
+   };
+
+   const struct option long_opts[] =
+   {
+      {"help",       no_argument,         0, 'h'},
+      {"version",    no_argument,         0, 'V'},
+      {"delay",      required_argument,   0, 'd'},
+      {"sort-key",   required_argument,   0, 's'},
+      {"user",       optional_argument,   0, 'u'},
+      {"no-color",   no_argument,         0, 'C'},
+      {"no-colour",  no_argument,         0, 'C'},
+      {"no-mouse",   no_argument,         0, 'M'},
+      {"no-unicode", no_argument,         0, 'U'},
+      {"tree",       no_argument,         0, 't'},
+      {"pid",        required_argument,   0, 'p'},
+      {"filter",     required_argument,   0, 'F'},
+      {"highlight-changes", optional_argument, 0, 'H'},
+      {"readonly",   no_argument,         0, 128},
+      PLATFORM_LONG_OPTIONS
+      {0, 0, 0, 0}
+   };
+
+   int opt, opti = 0;
+   /* Parse arguments */
+   while ((opt = getopt_long(argc, argv, "hVMCs:td:u::Up:F:H::", long_opts, &opti))) {
+      if (opt == EOF)
+         break;
+      switch (opt) {
+         case 'h':
+            printHelpFlag(program);
+            exit(0);
+         case 'V':
+            printVersionFlag(program);
+            exit(0);
+         case 's':
+            assert(optarg); /* please clang analyzer, cause optarg can be NULL in the 'u' case */
+            if (String_eq(optarg, "help")) {
+               for (int j = 1; j < LAST_PROCESSFIELD; j++) {
+                  const char* name = Process_fields[j].name;
+                  const char* description = Process_fields[j].description;
+                  if (name) printf("%19s %s\n", name, description);
+               }
+               exit(0);
+            }
+            flags.sortKey = 0;
+            for (int j = 1; j < LAST_PROCESSFIELD; j++) {
+               if (Process_fields[j].name == NULL)
+                  continue;
+               if (String_eq(optarg, Process_fields[j].name)) {
+                  flags.sortKey = j;
+                  break;
+               }
+            }
+            if (flags.sortKey == 0) {
+               fprintf(stderr, "Error: invalid column \"%s\".\n", optarg);
+               exit(1);
+            }
+            break;
+         case 'd':
+            if (sscanf(optarg, "%16d", &(flags.delay)) == 1) {
+               if (flags.delay < 1) flags.delay = 1;
+               if (flags.delay > 100) flags.delay = 100;
+            } else {
+               fprintf(stderr, "Error: invalid delay value \"%s\".\n", optarg);
+               exit(1);
+            }
+            break;
+         case 'u':
+         {
+            const char *username = optarg;
+            if (!username && optind < argc && argv[optind] != NULL &&
+                (argv[optind][0] != '\0' && argv[optind][0] != '-')) {
+               username = argv[optind++];
+            }
+
+            if (!username) {
+               flags.userId = geteuid();
+            } else if (!Action_setUserOnly(username, &(flags.userId))) {
+               fprintf(stderr, "Error: invalid user \"%s\".\n", username);
+               exit(1);
+            }
+            break;
+         }
+         case 'C':
+            flags.useColors = false;
+            break;
+         case 'M':
+#ifdef HAVE_GETMOUSE
+            flags.enableMouse = false;
+#endif
+            break;
+         case 'U':
+            flags.allowUnicode = false;
+            break;
+         case 't':
+            flags.treeView = true;
+            break;
+         case 'p': {
+            assert(optarg); /* please clang analyzer, cause optarg can be NULL in the 'u' case */
+            char* argCopy = xStrdup(optarg);
+            char* saveptr;
+            const char* pid = strtok_r(argCopy, ",", &saveptr);
+
+            if (!flags.pidMatchList) {
+               flags.pidMatchList = Hashtable_new(8, false);
+            }
+
+            while(pid) {
+                unsigned int num_pid = atoi(pid);
+                //  deepcode ignore CastIntegerToAddress: we just want a non-NUll pointer here
+                Hashtable_put(flags.pidMatchList, num_pid, (void *) 1);
+                pid = strtok_r(NULL, ",", &saveptr);
+            }
+            free(argCopy);
+
+            break;
+         }
+         case 'F': {
+            assert(optarg);
+            free_and_xStrdup(&flags.commFilter, optarg);
+            break;
+         }
+         case 'H': {
+            const char *delay = optarg;
+            if (!delay && optind < argc && argv[optind] != NULL &&
+                (argv[optind][0] != '\0' && argv[optind][0] != '-')) {
+                delay = argv[optind++];
+            }
+            if (delay) {
+                if (sscanf(delay, "%16d", &(flags.highlightDelaySecs)) == 1) {
+                   if (flags.highlightDelaySecs < 1)
+                      flags.highlightDelaySecs = 1;
+                } else {
+                   fprintf(stderr, "Error: invalid highlight delay value \"%s\".\n", delay);
+                   exit(1);
+                }
+            }
+            flags.highlightChanges = true;
+            break;
+         }
+         case 128:
+            flags.readonly = true;
+            break;
+
+         default:
+           if (Platform_getLongOption(opt, argc, argv) == false)
+              exit(1);
+           break;
+      }
+   }
+   return flags;
+}
+
+static void CommandLine_delay(ProcessList* pl, unsigned long millisec) {
+   struct timespec req = {
+      .tv_sec = 0,
+      .tv_nsec = millisec * 1000000L
+   };
+   while (nanosleep(&req, &req) == -1)
+      continue;
+   Platform_gettime_realtime(&pl->realtime, &pl->realtimeMs);
+}
+
+static void setCommFilter(State* state, char** commFilter) {
+   ProcessList* pl = state->pl;
+   IncSet* inc = state->mainPanel->inc;
+
+   IncSet_setFilter(inc, *commFilter);
+   pl->incFilter = IncSet_filter(inc);
+
+   free(*commFilter);
+   *commFilter = NULL;
+}
+
+int CommandLine_run(const char* name, int argc, char** argv) {
+
+   /* initialize locale */
+   const char* lc_ctype;
+   if ((lc_ctype = getenv("LC_CTYPE")) || (lc_ctype = getenv("LC_ALL")))
+      setlocale(LC_CTYPE, lc_ctype);
+   else
+      setlocale(LC_CTYPE, "");
+
+   CommandLineSettings flags = parseArguments(name, argc, argv);
+
+   if (flags.readonly)
+      Settings_enableReadonly();
+
+   Platform_init();
+
+   Process_setupColumnWidths();
+
+   UsersTable* ut = UsersTable_new();
+   Hashtable* dc = DynamicColumns_new();
+   Hashtable* dm = DynamicMeters_new();
+   if (!dc)
+      dc = Hashtable_new(0, true);
+
+   ProcessList* pl = ProcessList_new(ut, dm, dc, flags.pidMatchList, flags.userId);
+
+   Settings* settings = Settings_new(pl->activeCPUs, dc);
+   pl->settings = settings;
+
+   Header* header = Header_new(pl, settings, 2);
+
+   Header_populateFromSettings(header);
+
+   if (flags.delay != -1)
+      settings->delay = flags.delay;
+   if (!flags.useColors)
+      settings->colorScheme = COLORSCHEME_MONOCHROME;
+#ifdef HAVE_GETMOUSE
+   if (!flags.enableMouse)
+      settings->enableMouse = false;
+#endif
+   if (flags.treeView)
+      settings->treeView = true;
+   if (flags.highlightChanges)
+      settings->highlightChanges = true;
+   if (flags.highlightDelaySecs != -1)
+      settings->highlightDelaySecs = flags.highlightDelaySecs;
+   if (flags.sortKey > 0) {
+      // -t -s <key> means "tree sorted by key"
+      // -s <key> means "list sorted by key" (previous existing behavior)
+      if (!flags.treeView) {
+         settings->treeView = false;
+      }
+      Settings_setSortKey(settings, flags.sortKey);
+   }
+
+   CRT_init(settings, flags.allowUnicode);
+
+   MainPanel* panel = MainPanel_new();
+   ProcessList_setPanel(pl, (Panel*) panel);
+
+   MainPanel_updateTreeFunctions(panel, settings->treeView);
+
+   State state = {
+      .settings = settings,
+      .ut = ut,
+      .pl = pl,
+      .mainPanel = panel,
+      .header = header,
+      .pauseProcessUpdate = false,
+      .hideProcessSelection = false,
+   };
+
+   MainPanel_setState(panel, &state);
+   if (flags.commFilter)
+      setCommFilter(&state, &(flags.commFilter));
+
+   ScreenManager* scr = ScreenManager_new(header, settings, &state, true);
+   ScreenManager_add(scr, (Panel*) panel, -1);
+
+   ProcessList_scan(pl, false);
+   CommandLine_delay(pl, 75);
+   ProcessList_scan(pl, false);
+
+   if (settings->allBranchesCollapsed)
+      ProcessList_collapseAllBranches(pl);
+
+   ScreenManager_run(scr, NULL, NULL);
+
+   attron(CRT_colors[RESET_COLOR]);
+   mvhline(LINES - 1, 0, ' ', COLS);
+   attroff(CRT_colors[RESET_COLOR]);
+   refresh();
+
+   Platform_done();
+
+   CRT_done();
+
+   if (settings->changed) {
+      int r = Settings_write(settings, false);
+      if (r < 0)
+         fprintf(stderr, "Can not save configuration to %s: %s\n", settings->filename, strerror(-r));
+   }
+
+   Header_delete(header);
+   ProcessList_delete(pl);
+
+   ScreenManager_delete(scr);
+   MetersPanel_cleanup();
+
+   UsersTable_delete(ut);
+
+   if (flags.pidMatchList)
+      Hashtable_delete(flags.pidMatchList);
+
+   CRT_resetSignalHandlers();
+
+   /* Delete these last, since they can get accessed in the crash handler */
+   Settings_delete(settings);
+   DynamicColumns_delete(dc);
+   DynamicMeters_delete(dm);
+
+   return 0;
+}

CommandLine.h

@@ -0,0 +1,14 @@
+#ifndef HEADER_CommandLine
+#define HEADER_CommandLine
+/*
+htop - CommandLine.h
+(C) 2004-2011 Hisham H. Muhammad
+(C) 2020-2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+
+int CommandLine_run(const char* name, int argc, char** argv);
+
+#endif

CommandScreen.c

@@ -0,0 +1,68 @@
+#include "config.h" // IWYU pragma: keep
+
+#include "CommandScreen.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "Macros.h"
+#include "Panel.h"
+#include "ProvideCurses.h"
+
+
+static void CommandScreen_scan(InfoScreen* this) {
+   Panel* panel = this->display;
+   int idx = MAXIMUM(Panel_getSelectedIndex(panel), 0);
+   Panel_prune(panel);
+
+   const char* p = Process_getCommand(this->process);
+   char line[COLS + 1];
+   int line_offset = 0, last_spc = -1, len;
+   for (; *p != '\0'; p++, line_offset++) {
+      assert(line_offset >= 0 && (size_t)line_offset < sizeof(line));
+      line[line_offset] = *p;
+      if (*p == ' ') {
+         last_spc = line_offset;
+      }
+
+      if (line_offset == COLS) {
+         len = (last_spc == -1) ? line_offset : last_spc;
+         line[len] = '\0';
+         InfoScreen_addLine(this, line);
+
+         line_offset -= len;
+         last_spc = -1;
+         memcpy(line, p - line_offset, line_offset + 1);
+      }
+   }
+
+   if (line_offset > 0) {
+      line[line_offset] = '\0';
+      InfoScreen_addLine(this, line);
+   }
+
+   Panel_setSelected(panel, idx);
+}
+
+static void CommandScreen_draw(InfoScreen* this) {
+   InfoScreen_drawTitled(this, "Command of process %d - %s", this->process->pid, Process_getCommand(this->process));
+}
+
+const InfoScreenClass CommandScreen_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = CommandScreen_delete
+   },
+   .scan = CommandScreen_scan,
+   .draw = CommandScreen_draw
+};
+
+CommandScreen* CommandScreen_new(Process* process) {
+   CommandScreen* this = AllocThis(CommandScreen);
+   return (CommandScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 2, " ");
+}
+
+void CommandScreen_delete(Object* this) {
+   free(InfoScreen_done((InfoScreen*)this));
+}

CommandScreen.h

@@ -0,0 +1,19 @@
+#ifndef HEADER_CommandScreen
+#define HEADER_CommandScreen
+
+#include "InfoScreen.h"
+#include "Object.h"
+#include "Process.h"
+
+
+typedef struct CommandScreen_ {
+   InfoScreen super;
+} CommandScreen;
+
+extern const InfoScreenClass CommandScreen_class;
+
+CommandScreen* CommandScreen_new(Process* process);
+
+void CommandScreen_delete(Object* this);
+
+#endif

Compat.c

@@ -0,0 +1,119 @@
+/*
+htop - Compat.c
+(C) 2020 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "Compat.h"
+
+#include <errno.h>
+#include <fcntl.h> // IWYU pragma: keep
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/types.h> // IWYU pragma: keep
+
+#include "XUtils.h" // IWYU pragma: keep
+
+
+int Compat_faccessat(int dirfd,
+                     const char* pathname,
+                     int mode,
+                     int flags) {
+   int ret;
+
+#ifdef HAVE_FACCESSAT
+
+   // Implementation note: AT_SYMLINK_NOFOLLOW unsupported on FreeBSD, fallback to lstat in that case
+
+   errno = 0;
+
+   ret = faccessat(dirfd, pathname, mode, flags);
+   if (!ret || errno != EINVAL)
+      return ret;
+
+#endif
+
+   // Error out on unsupported configurations
+   if (dirfd != (int)AT_FDCWD || mode != F_OK) {
+      errno = EINVAL;
+      return -1;
+   }
+
+   // Fallback to stat(2)/lstat(2) depending on flags
+   struct stat statinfo;
+   if(flags) {
+      ret = lstat(pathname, &statinfo);
+   } else {
+      ret = stat(pathname, &statinfo);
+   }
+
+   return ret;
+}
+
+int Compat_fstatat(int dirfd,
+                   const char* dirpath,
+                   const char* pathname,
+                   struct stat* statbuf,
+                   int flags) {
+
+#ifdef HAVE_FSTATAT
+
+   (void)dirpath;
+
+   return fstatat(dirfd, pathname, statbuf, flags);
+
+#else
+
+   (void)dirfd;
+
+   char path[4096];
+   xSnprintf(path, sizeof(path), "%s/%s", dirpath, pathname);
+
+   if (flags & AT_SYMLINK_NOFOLLOW)
+      return lstat(path, statbuf);
+
+   return stat(path, statbuf);
+
+#endif
+}
+
+#ifndef HAVE_OPENAT
+
+int Compat_openat(const char* dirpath,
+                  const char* pathname,
+                  int flags) {
+
+   char path[4096];
+   xSnprintf(path, sizeof(path), "%s/%s", dirpath, pathname);
+
+   return open(path, flags);
+}
+
+#endif /* !HAVE_OPENAT */
+
+ssize_t Compat_readlinkat(int dirfd,
+                          const char* dirpath,
+                          const char* pathname,
+                          char* buf,
+                          size_t bufsize) {
+
+#ifdef HAVE_READLINKAT
+
+   (void)dirpath;
+
+   return readlinkat(dirfd, pathname, buf, bufsize);
+
+#else
+
+   (void)dirfd;
+
+   char path[4096];
+   xSnprintf(path, sizeof(path), "%s/%s", dirpath, pathname);
+
+   return readlink(path, buf, bufsize);
+
+#endif
+}

Compat.h

@@ -0,0 +1,59 @@
+#ifndef HEADER_Compat
+#define HEADER_Compat
+/*
+htop - Compat.h
+(C) 2020 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include <fcntl.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/stat.h> // IWYU pragma: keep
+
+
+int Compat_faccessat(int dirfd,
+                     const char* pathname,
+                     int mode,
+                     int flags);
+
+int Compat_fstatat(int dirfd,
+                   const char* dirpath,
+                   const char* pathname,
+                   struct stat* statbuf,
+                   int flags);
+
+#ifdef HAVE_OPENAT
+
+typedef int openat_arg_t;
+
+static inline void Compat_openatArgClose(openat_arg_t dirfd) {
+   close(dirfd);
+}
+
+static inline int Compat_openat(openat_arg_t dirfd, const char* pathname, int flags) {
+   return openat(dirfd, pathname, flags);
+}
+
+#else /* HAVE_OPENAT */
+
+typedef const char* openat_arg_t;
+
+static inline void Compat_openatArgClose(openat_arg_t dirpath) {
+   (void)dirpath;
+}
+
+int Compat_openat(openat_arg_t dirpath, const char* pathname, int flags);
+
+#endif /* HAVE_OPENAT */
+
+ssize_t Compat_readlinkat(int dirfd,
+                          const char* dirpath,
+                          const char* pathname,
+                          char* buf,
+                          size_t bufsize);
+
+#endif /* HEADER_Compat */

DateMeter.c

@@ -0,0 +1,52 @@
+/*
+htop - DateMeter.c
+(C) 2004-2020 Hisham H. Muhammad, Michael Schönitzer
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "DateMeter.h"
+
+#include <time.h>
+#include <sys/time.h>
+
+#include "CRT.h"
+#include "Object.h"
+#include "ProcessList.h"
+
+
+static const int DateMeter_attributes[] = {
+   DATE
+};
+
+static void DateMeter_updateValues(Meter* this) {
+   const ProcessList* pl = this->pl;
+
+   struct tm result;
+   const struct tm* lt = localtime_r(&pl->realtime.tv_sec, &result);
+   this->values[0] = lt->tm_yday;
+   int year = lt->tm_year + 1900;
+   if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
+      this->total = 366;
+   } else {
+      this->total = 365;
+   }
+   strftime(this->txtBuffer, sizeof(this->txtBuffer), "%F", lt);
+}
+
+const MeterClass DateMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete
+   },
+   .updateValues = DateMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 365,
+   .attributes = DateMeter_attributes,
+   .name = "Date",
+   .uiName = "Date",
+   .caption = "Date: ",
+};

DateMeter.h

@@ -0,0 +1,15 @@
+#ifndef HEADER_DateMeter
+#define HEADER_DateMeter
+/*
+htop - DateMeter.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Meter.h"
+
+
+extern const MeterClass DateMeter_class;
+
+#endif

DateTimeMeter.c

@@ -0,0 +1,52 @@
+/*
+htop - DateTimeMeter.c
+(C) 2004-2020 Hisham H. Muhammad, Michael Schönitzer
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "DateTimeMeter.h"
+
+#include <time.h>
+#include <sys/time.h>
+
+#include "CRT.h"
+#include "Object.h"
+#include "ProcessList.h"
+
+
+static const int DateTimeMeter_attributes[] = {
+   DATETIME
+};
+
+static void DateTimeMeter_updateValues(Meter* this) {
+   const ProcessList* pl = this->pl;
+
+   struct tm result;
+   const struct tm* lt = localtime_r(&pl->realtime.tv_sec, &result);
+   int year = lt->tm_year + 1900;
+   if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
+      this->total = 366;
+   } else {
+      this->total = 365;
+   }
+   this->values[0] = lt->tm_yday;
+   strftime(this->txtBuffer, sizeof(this->txtBuffer), "%F %H:%M:%S", lt);
+}
+
+const MeterClass DateTimeMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete
+   },
+   .updateValues = DateTimeMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 365,
+   .attributes = DateTimeMeter_attributes,
+   .name = "DateTime",
+   .uiName = "Date and Time",
+   .caption = "Date & Time: ",
+};

DateTimeMeter.h

@@ -0,0 +1,15 @@
+#ifndef HEADER_DateTimeMeter
+#define HEADER_DateTimeMeter
+/*
+htop - DateTimeMeter.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Meter.h"
+
+
+extern const MeterClass DateTimeMeter_class;
+
+#endif

DiskIOMeter.c

@@ -0,0 +1,129 @@
+/*
+htop - DiskIOMeter.c
+(C) 2020 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "DiskIOMeter.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+static const int DiskIOMeter_attributes[] = {
+   METER_VALUE_NOTICE,
+   METER_VALUE_IOREAD,
+   METER_VALUE_IOWRITE,
+};
+
+static bool hasData = false;
+static uint32_t cached_read_diff;
+static uint32_t cached_write_diff;
+static double cached_utilisation_diff;
+
+static void DiskIOMeter_updateValues(Meter* this) {
+   const ProcessList* pl = this->pl;
+
+   static uint64_t cached_last_update;
+   uint64_t passedTimeInMs = pl->realtimeMs - cached_last_update;
+
+   /* update only every 500ms */
+   if (passedTimeInMs > 500) {
+      static uint64_t cached_read_total;
+      static uint64_t cached_write_total;
+      static uint64_t cached_msTimeSpend_total;
+      uint64_t diff;
+
+      cached_last_update = pl->realtimeMs;
+
+      DiskIOData data;
+
+      hasData = Platform_getDiskIO(&data);
+      if (!hasData) {
+         this->values[0] = 0;
+         xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "no data");
+         return;
+      }
+
+      if (data.totalBytesRead > cached_read_total) {
+         diff = data.totalBytesRead - cached_read_total;
+         diff /= 1024; /* Meter_humanUnit() expects unit in kilo */
+         cached_read_diff = (uint32_t)diff;
+      } else {
+         cached_read_diff = 0;
+      }
+      cached_read_total = data.totalBytesRead;
+
+      if (data.totalBytesWritten > cached_write_total) {
+         diff = data.totalBytesWritten - cached_write_total;
+         diff /= 1024; /* Meter_humanUnit() expects unit in kilo */
+         cached_write_diff = (uint32_t)diff;
+      } else {
+         cached_write_diff = 0;
+      }
+      cached_write_total = data.totalBytesWritten;
+
+      if (data.totalMsTimeSpend > cached_msTimeSpend_total) {
+         diff = data.totalMsTimeSpend - cached_msTimeSpend_total;
+         cached_utilisation_diff = 100.0 * (double)diff / passedTimeInMs;
+      } else {
+         cached_utilisation_diff = 0.0;
+      }
+      cached_msTimeSpend_total = data.totalMsTimeSpend;
+   }
+
+   this->values[0] = cached_utilisation_diff;
+   this->total = MAXIMUM(this->values[0], 100.0); /* fix total after (initial) spike */
+
+   char bufferRead[12], bufferWrite[12];
+   Meter_humanUnit(bufferRead, cached_read_diff, sizeof(bufferRead));
+   Meter_humanUnit(bufferWrite, cached_write_diff, sizeof(bufferWrite));
+   snprintf(this->txtBuffer, sizeof(this->txtBuffer), "%sB %sB %.1f%%", bufferRead, bufferWrite, cached_utilisation_diff);
+}
+
+static void DiskIOMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
+   if (!hasData) {
+      RichString_writeAscii(out, CRT_colors[METER_VALUE_ERROR], "no data");
+      return;
+   }
+
+   char buffer[16];
+   int len;
+
+   int color = cached_utilisation_diff > 40.0 ? METER_VALUE_NOTICE : METER_VALUE;
+   len = xSnprintf(buffer, sizeof(buffer), "%.1f%%", cached_utilisation_diff);
+   RichString_appendnAscii(out, CRT_colors[color], buffer, len);
+
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " read: ");
+   Meter_humanUnit(buffer, cached_read_diff, sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOREAD], buffer);
+
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " write: ");
+   Meter_humanUnit(buffer, cached_write_diff, sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOWRITE], buffer);
+}
+
+const MeterClass DiskIOMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = DiskIOMeter_display
+   },
+   .updateValues = DiskIOMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 100.0,
+   .attributes = DiskIOMeter_attributes,
+   .name = "DiskIO",
+   .uiName = "Disk IO",
+   .caption = "Disk IO: "
+};

DiskIOMeter.h

@@ -0,0 +1,21 @@
+#ifndef HEADER_DiskIOMeter
+#define HEADER_DiskIOMeter
+/*
+htop - DiskIOMeter.h
+(C) 2020 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Meter.h"
+
+
+typedef struct DiskIOData_ {
+   uint64_t totalBytesRead;
+   uint64_t totalBytesWritten;
+   uint64_t totalMsTimeSpend;
+} DiskIOData;
+
+extern const MeterClass DiskIOMeter_class;
+
+#endif /* HEADER_DiskIOMeter */

DisplayOptionsPanel.c

@@ -1,32 +1,24 @@
 /*
 htop - DisplayOptionsPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "DisplayOptionsPanel.h"
 
-#include "CheckItem.h"
-#include "CRT.h"
-
-#include <assert.h>
+#include <stdbool.h>
 #include <stdlib.h>
-#include <string.h>
 
-/*{
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "Object.h"
+#include "OptionItem.h"
+#include "ProvideCurses.h"
 
-typedef struct DisplayOptionsPanel_ {
-   Panel super;
-
-   Settings* settings;
-   ScreenManager* scr;
-} DisplayOptionsPanel;
-
-}*/
 
 static const char* const DisplayOptionsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
@@ -39,33 +31,55 @@ static void DisplayOptionsPanel_delete(Object* object) {
 
 static HandlerResult DisplayOptionsPanel_eventHandler(Panel* super, int ch) {
    DisplayOptionsPanel* this = (DisplayOptionsPanel*) super;
-   
-   HandlerResult result = IGNORED;
-   CheckItem* selected = (CheckItem*) Panel_getSelected(super);
 
-   switch(ch) {
-   case 0x0a:
-   case 0x0d:
+   HandlerResult result = IGNORED;
+   OptionItem* selected = (OptionItem*) Panel_getSelected(super);
+
+   switch (ch) {
+   case '\n':
+   case '\r':
    case KEY_ENTER:
    case KEY_MOUSE:
    case KEY_RECLICK:
    case ' ':
-      CheckItem_set(selected, ! (CheckItem_get(selected)) );
-      result = HANDLED;
+      switch (OptionItem_kind(selected)) {
+      case OPTION_ITEM_CHECK:
+         CheckItem_toggle((CheckItem*)selected);
+         result = HANDLED;
+         break;
+      case OPTION_ITEM_NUMBER:
+         NumberItem_toggle((NumberItem*)selected);
+         result = HANDLED;
+         break;
+      }
+      break;
+   case '-':
+      if (OptionItem_kind(selected) == OPTION_ITEM_NUMBER) {
+         NumberItem_decrease((NumberItem*)selected);
+         result = HANDLED;
+      }
+      break;
+   case '+':
+      if (OptionItem_kind(selected) == OPTION_ITEM_NUMBER) {
+         NumberItem_increase((NumberItem*)selected);
+         result = HANDLED;
+      }
+      break;
    }
 
    if (result == HANDLED) {
       this->settings->changed = true;
-      const Header* header = this->scr->header;
-      Header_calculateHeight((Header*) header);
-      Header_reinit((Header*) header);
+      Header* header = this->scr->header;
+      Header_calculateHeight(header);
+      Header_reinit(header);
+      Header_updateData(header);
       Header_draw(header);
-      ScreenManager_resize(this->scr, this->scr->x1, header->height, this->scr->x2, this->scr->y2);
+      ScreenManager_resize(this->scr);
    }
    return result;
 }
 
-PanelClass DisplayOptionsPanel_class = {
+const PanelClass DisplayOptionsPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = DisplayOptionsPanel_delete
@@ -77,25 +91,55 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    DisplayOptionsPanel* this = AllocThis(DisplayOptionsPanel);
    Panel* super = (Panel*) this;
    FunctionBar* fuBar = FunctionBar_new(DisplayOptionsFunctions, NULL, NULL);
-   Panel_init(super, 1, 1, 1, 1, Class(CheckItem), true, fuBar);
+   Panel_init(super, 1, 1, 1, 1, Class(OptionItem), true, fuBar);
 
    this->settings = settings;
    this->scr = scr;
 
    Panel_setHeader(super, "Display options");
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Tree view"), &(settings->treeView)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Shadow other users' processes"), &(settings->shadowOtherUsers)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Hide kernel threads"), &(settings->hideKernelThreads)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Hide userland process threads"), &(settings->hideUserlandThreads)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Display threads in a different color"), &(settings->highlightThreads)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Show custom thread names"), &(settings->showThreadNames)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Show program path"), &(settings->showProgramPath)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Highlight program \"basename\""), &(settings->highlightBaseName)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Highlight large numbers in memory counters"), &(settings->highlightMegabytes)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Leave a margin around header"), &(settings->headerMargin)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Detailed CPU time (System/IO-Wait/Hard-IRQ/Soft-IRQ/Steal/Guest)"), &(settings->detailedCPUTime)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Count CPUs from 0 instead of 1"), &(settings->countCPUsFromZero)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Update process names on every refresh"), &(settings->updateProcessNames)));
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Add guest time in CPU meter percentage"), &(settings->accountGuestInCPUMeter)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Tree view", &(settings->treeView)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Tree view is always sorted by PID (htop 2 behavior)", &(settings->treeViewAlwaysByPID)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Tree view is collapsed by default", &(settings->allBranchesCollapsed)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Shadow other users' processes", &(settings->shadowOtherUsers)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Hide kernel threads", &(settings->hideKernelThreads)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Hide userland process threads", &(settings->hideUserlandThreads)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Display threads in a different color", &(settings->highlightThreads)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Show custom thread names", &(settings->showThreadNames)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Show program path", &(settings->showProgramPath)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Highlight program \"basename\"", &(settings->highlightBaseName)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Highlight out-dated/removed programs", &(settings->highlightDeletedExe)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Merge exe, comm and cmdline in Command", &(settings->showMergedCommand)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Try to find comm in cmdline (when Command is merged)", &(settings->findCommInCmdline)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Try to strip exe from cmdline (when Command is merged)", &(settings->stripExeFromCmdline)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Highlight large numbers in memory counters", &(settings->highlightMegabytes)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Leave a margin around header", &(settings->headerMargin)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Detailed CPU time (System/IO-Wait/Hard-IRQ/Soft-IRQ/Steal/Guest)", &(settings->detailedCPUTime)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Count CPUs from 1 instead of 0", &(settings->countCPUsFromOne)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Update process names on every refresh", &(settings->updateProcessNames)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Add guest time in CPU meter percentage", &(settings->accountGuestInCPUMeter)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU percentage numerically", &(settings->showCPUUsage)));
+   Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU frequency", &(settings->showCPUFrequency)));
+   #ifdef BUILD_WITH_CPU_TEMP
+   Panel_add(super, (Object*) CheckItem_newByRef(
+   #if defined(HTOP_LINUX)
+                                                 "Also show CPU temperature (requires libsensors)",
+   #elif defined(HTOP_FREEBSD)
+                                                 "Also show CPU temperature",
+   #else
+   #error Unknown temperature implementation!
+   #endif
+                                                 &(settings->showCPUTemperature)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Show temperature in degree Fahrenheit instead of Celsius", &(settings->degreeFahrenheit)));
+   #endif
+   #ifdef HAVE_GETMOUSE
+   Panel_add(super, (Object*) CheckItem_newByRef("Enable the mouse", &(settings->enableMouse)));
+   #endif
+   Panel_add(super, (Object*) NumberItem_newByRef("Update interval (in seconds)", &(settings->delay), -1, 1, 255));
+   Panel_add(super, (Object*) CheckItem_newByRef("Highlight new and old processes", &(settings->highlightChanges)));
+   Panel_add(super, (Object*) NumberItem_newByRef("- Highlight time (in seconds)", &(settings->highlightDelaySecs), 0, 1, 24 * 60 * 60));
+   Panel_add(super, (Object*) NumberItem_newByRef("Hide main function bar (0 - off, 1 - on ESC until next input, 2 - permanently)", &(settings->hideFunctionBar), 0, 0, 2));
+   #ifdef HAVE_LIBHWLOC
+   Panel_add(super, (Object*) CheckItem_newByRef("Show topology when selecting affinity by default", &(settings->topologyAffinity)));
+   #endif
    return this;
 }

DisplayOptionsPanel.h

@@ -1,17 +1,16 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_DisplayOptionsPanel
 #define HEADER_DisplayOptionsPanel
 /*
 htop - DisplayOptionsPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Panel.h"
-#include "Settings.h"
 #include "ScreenManager.h"
+#include "Settings.h"
+
 
 typedef struct DisplayOptionsPanel_ {
    Panel super;
@@ -20,8 +19,7 @@ typedef struct DisplayOptionsPanel_ {
    ScreenManager* scr;
 } DisplayOptionsPanel;
 
-
-extern PanelClass DisplayOptionsPanel_class;
+extern const PanelClass DisplayOptionsPanel_class;
 
 DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager* scr);
 

DynamicColumn.c

@@ -0,0 +1,66 @@
+/*
+htop - DynamicColumn.c
+(C) 2021 Sohaib Mohammed
+(C) 2021 htop dev team
+(C) 2021 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "DynamicColumn.h"
+
+#include <stddef.h>
+
+#include "Platform.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+Hashtable* DynamicColumns_new(void) {
+   return Platform_dynamicColumns();
+}
+
+void DynamicColumns_delete(Hashtable* dynamics) {
+   if (dynamics) {
+      Platform_dynamicColumnsDone(dynamics);
+      Hashtable_delete(dynamics);
+   }
+}
+
+const char* DynamicColumn_init(unsigned int key) {
+   return Platform_dynamicColumnInit(key);
+}
+
+typedef struct {
+   const char* name;
+   const DynamicColumn* data;
+   unsigned int key;
+} DynamicIterator;
+
+static void DynamicColumn_compare(ht_key_t key, void* value, void* data) {
+   const DynamicColumn* column = (const DynamicColumn*)value;
+   DynamicIterator* iter = (DynamicIterator*)data;
+   if (String_eq(iter->name, column->name)) {
+      iter->data = column;
+      iter->key = key;
+   }
+}
+
+const DynamicColumn* DynamicColumn_search(Hashtable* dynamics, const char* name, unsigned int* key) {
+   DynamicIterator iter = { .key = 0, .data = NULL, .name = name };
+   if (dynamics)
+      Hashtable_foreach(dynamics, DynamicColumn_compare, &iter);
+   if (key)
+      *key = iter.key;
+   return iter.data;
+}
+
+const DynamicColumn* DynamicColumn_lookup(Hashtable* dynamics, unsigned int key) {
+   return (const DynamicColumn*) Hashtable_get(dynamics, key);
+}
+
+bool DynamicColumn_writeField(const Process* proc, RichString* str, unsigned int key) {
+   return Platform_dynamicColumnWriteField(proc, str, key);
+}

DynamicColumn.h

@@ -0,0 +1,34 @@
+#ifndef HEADER_DynamicColumn
+#define HEADER_DynamicColumn
+
+#include <stdbool.h>
+
+#include "Hashtable.h"
+#include "Process.h"
+#include "RichString.h"
+
+
+#define DYNAMIC_MAX_COLUMN_WIDTH 28
+#define DYNAMIC_DEFAULT_COLUMN_WIDTH -5
+
+typedef struct DynamicColumn_ {
+   char name[32];     /* unique, internal-only name */
+   char* heading;     /* displayed in main screen */
+   char* caption;     /* displayed in setup menu (short name) */
+   char* description; /* displayed in setup menu (detail) */
+   int width;         /* display width +/- for value alignment */
+} DynamicColumn;
+
+Hashtable* DynamicColumns_new(void);
+
+void DynamicColumns_delete(Hashtable* dynamics);
+
+const char* DynamicColumn_init(unsigned int key);
+
+const DynamicColumn* DynamicColumn_lookup(Hashtable* dynamics, unsigned int key);
+
+const DynamicColumn* DynamicColumn_search(Hashtable* dynamics, const char* name, unsigned int* key);
+
+bool DynamicColumn_writeField(const Process* proc, RichString* str, unsigned int key);
+
+#endif

DynamicMeter.c

@@ -0,0 +1,131 @@
+/*
+htop - DynamicMeter.c
+(C) 2021 htop dev team
+(C) 2021 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "DynamicMeter.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+static const int DynamicMeter_attributes[] = {
+   DYNAMIC_GRAY,
+   DYNAMIC_DARKGRAY,
+   DYNAMIC_RED,
+   DYNAMIC_GREEN,
+   DYNAMIC_BLUE,
+   DYNAMIC_CYAN,
+   DYNAMIC_MAGENTA,
+   DYNAMIC_YELLOW,
+   DYNAMIC_WHITE
+};
+
+Hashtable* DynamicMeters_new(void) {
+   return Platform_dynamicMeters();
+}
+
+void DynamicMeters_delete(Hashtable* dynamics) {
+   if (dynamics) {
+      Platform_dynamicMetersDone(dynamics);
+      Hashtable_delete(dynamics);
+   }
+}
+
+typedef struct {
+   unsigned int key;
+   const char* name;
+   bool found;
+} DynamicIterator;
+
+static void DynamicMeter_compare(ht_key_t key, void* value, void* data) {
+   const DynamicMeter* meter = (const DynamicMeter*)value;
+   DynamicIterator* iter = (DynamicIterator*)data;
+   if (String_eq(iter->name, meter->name)) {
+      iter->found = true;
+      iter->key = key;
+   }
+}
+
+bool DynamicMeter_search(Hashtable* dynamics, const char* name, unsigned int* key) {
+   DynamicIterator iter = { .key = 0, .name = name, .found = false };
+   if (dynamics)
+      Hashtable_foreach(dynamics, DynamicMeter_compare, &iter);
+   if (key)
+      *key = iter.key;
+   return iter.found;
+}
+
+const char* DynamicMeter_lookup(Hashtable* dynamics, unsigned int key) {
+   const DynamicMeter* meter = Hashtable_get(dynamics, key);
+   return meter ? meter->name : NULL;
+}
+
+static void DynamicMeter_init(Meter* meter) {
+   Platform_dynamicMeterInit(meter);
+}
+
+static void DynamicMeter_updateValues(Meter* meter) {
+   Platform_dynamicMeterUpdateValues(meter);
+}
+
+static void DynamicMeter_display(const Object* cast, RichString* out) {
+   const Meter* meter = (const Meter*)cast;
+   Platform_dynamicMeterDisplay(meter, out);
+}
+
+static const char* DynamicMeter_getCaption(const Meter* this) {
+   const ProcessList* pl = this->pl;
+   const DynamicMeter* meter = Hashtable_get(pl->dynamicMeters, this->param);
+   if (meter)
+      return meter->caption ? meter->caption : meter->name;
+   return this->caption;
+}
+
+static void DynamicMeter_getUiName(const Meter* this, char* name, size_t length) {
+   const ProcessList* pl = this->pl;
+   const DynamicMeter* meter = Hashtable_get(pl->dynamicMeters, this->param);
+   if (meter) {
+      const char* uiName = meter->caption;
+      if (uiName) {
+         int len = strlen(uiName);
+         if (len > 2 && uiName[len - 2] == ':')
+            len -= 2;
+         xSnprintf(name, length, "%.*s", len, uiName);
+      } else {
+         xSnprintf(name, length, "%s", meter->name);
+      }
+   }
+}
+
+const MeterClass DynamicMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = DynamicMeter_display
+   },
+   .init = DynamicMeter_init,
+   .updateValues = DynamicMeter_updateValues,
+   .getCaption = DynamicMeter_getCaption,
+   .getUiName = DynamicMeter_getUiName,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
+   .total = 100.0,
+   .attributes = DynamicMeter_attributes,
+   .name = "Dynamic",
+   .uiName = "Dynamic",
+   .caption = "",
+};

DynamicMeter.h

@@ -0,0 +1,28 @@
+#ifndef HEADER_DynamicMeter
+#define HEADER_DynamicMeter
+
+#include <stdbool.h>
+
+#include "Hashtable.h"
+#include "Meter.h"
+
+
+typedef struct DynamicMeter_ {
+   char name[32];  /* unique name, cannot contain spaces */
+   char* caption;
+   char* description;
+   unsigned int type;
+   double maximum;
+} DynamicMeter;
+
+Hashtable* DynamicMeters_new(void);
+
+void DynamicMeters_delete(Hashtable* dynamics);
+
+const char* DynamicMeter_lookup(Hashtable* dynamics, unsigned int key);
+
+bool DynamicMeter_search(Hashtable* dynamics, const char* name, unsigned int* key);
+
+extern const MeterClass DynamicMeter_class;
+
+#endif

EnvScreen.c

@@ -1,58 +1,41 @@
-#include "EnvScreen.h"
+#include "config.h" // IWYU pragma: keep
 
-#include "config.h"
-#include "CRT.h"
-#include "IncSet.h"
-#include "ListItem.h"
-#include "Platform.h"
-#include "StringUtils.h"
+#include "EnvScreen.h"
 
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 
-/*{
-#include "InfoScreen.h"
+#include "Macros.h"
+#include "Panel.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
 
-typedef struct EnvScreen_ {
-   InfoScreen super;
-} EnvScreen;
-}*/
-
-InfoScreenClass EnvScreen_class = {
-   .super = {
-      .extends = Class(Object),
-      .delete = EnvScreen_delete
-   },
-   .scan = EnvScreen_scan,
-   .draw = EnvScreen_draw
-};
 
 EnvScreen* EnvScreen_new(Process* process) {
    EnvScreen* this = xMalloc(sizeof(EnvScreen));
    Object_setClass(this, Class(EnvScreen));
-   return (EnvScreen*) InfoScreen_init(&this->super, process, NULL, LINES-3, " ");
+   return (EnvScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 2, " ");
 }
 
 void EnvScreen_delete(Object* this) {
    free(InfoScreen_done((InfoScreen*)this));
 }
 
-void EnvScreen_draw(InfoScreen* this) {
-   InfoScreen_drawTitled(this, "Environment of process %d - %s", this->process->pid, this->process->comm);
+static void EnvScreen_draw(InfoScreen* this) {
+   InfoScreen_drawTitled(this, "Environment of process %d - %s", this->process->pid, Process_getCommand(this->process));
 }
 
-void EnvScreen_scan(InfoScreen* this) {
+static void EnvScreen_scan(InfoScreen* this) {
    Panel* panel = this->display;
-   int idx = MAX(Panel_getSelectedIndex(panel), 0);
+   int idx = MAXIMUM(Panel_getSelectedIndex(panel), 0);
 
    Panel_prune(panel);
 
-   CRT_dropPrivileges();
    char* env = Platform_getProcessEnv(this->process->pid);
-   CRT_restorePrivileges();
    if (env) {
-      for (char *p = env; *p; p = strrchr(p, 0)+1)
+      for (const char* p = env; *p; p = strrchr(p, 0) + 1)
          InfoScreen_addLine(this, p);
       free(env);
    }
@@ -64,3 +47,12 @@ void EnvScreen_scan(InfoScreen* this) {
    Vector_insertionSort(panel->items);
    Panel_setSelected(panel, idx);
 }
+
+const InfoScreenClass EnvScreen_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = EnvScreen_delete
+   },
+   .scan = EnvScreen_scan,
+   .draw = EnvScreen_draw
+};

EnvScreen.h

@@ -1,22 +1,19 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_EnvScreen
 #define HEADER_EnvScreen
 
 #include "InfoScreen.h"
+#include "Object.h"
+#include "Process.h"
+
 
 typedef struct EnvScreen_ {
    InfoScreen super;
 } EnvScreen;
 
-extern InfoScreenClass EnvScreen_class;
+extern const InfoScreenClass EnvScreen_class;
 
 EnvScreen* EnvScreen_new(Process* process);
 
 void EnvScreen_delete(Object* this);
 
-void EnvScreen_draw(InfoScreen* this);
-
-void EnvScreen_scan(InfoScreen* this);
-
 #endif

FunctionBar.c

@@ -1,32 +1,22 @@
 /*
 htop - FunctionBar.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "FunctionBar.h"
-#include "CRT.h"
-#include "RichString.h"
-#include "XAlloc.h"
 
-#include <assert.h>
-#include <string.h>
 #include <stdlib.h>
+#include <string.h>
 
-/*{
+#include "CRT.h"
+#include "Macros.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-#include <stdbool.h>
-
-typedef struct FunctionBar_ {
-   int size;
-   char** functions;
-   char** keys;
-   int* events;
-   bool staticData;
-} FunctionBar;
-
-}*/
 
 static const char* const FunctionBar_FKeys[] = {"F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", NULL};
 
@@ -37,6 +27,8 @@ static int FunctionBar_FEvents[] = {KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_
 static const char* const FunctionBar_EnterEscKeys[] = {"Enter", "Esc", NULL};
 static const int FunctionBar_EnterEscEvents[] = {13, 27};
 
+static int currentLen = 0;
+
 FunctionBar* FunctionBar_newEnterEsc(const char* enter, const char* esc) {
    const char* functions[] = {enter, esc, NULL};
    return FunctionBar_new(functions, FunctionBar_EnterEscKeys, FunctionBar_EnterEscEvents);
@@ -52,21 +44,21 @@ FunctionBar* FunctionBar_new(const char* const* functions, const char* const* ke
       this->functions[i] = xStrdup(functions[i]);
    }
    if (keys && events) {
-      this->staticData = false; 
-      this->keys = xCalloc(15, sizeof(char*));
+      this->staticData = false;
+      this->keys.keys = xCalloc(15, sizeof(char*));
       this->events = xCalloc(15, sizeof(int));
       int i = 0;
       while (i < 15 && functions[i]) {
-         this->keys[i] = xStrdup(keys[i]);
+         this->keys.keys[i] = xStrdup(keys[i]);
          this->events[i] = events[i];
          i++;
       }
       this->size = i;
    } else {
       this->staticData = true;
-      this->keys = (char**) FunctionBar_FKeys;
+      this->keys.constKeys = FunctionBar_FKeys;
       this->events = FunctionBar_FEvents;
-      this->size = 10;
+      this->size = ARRAYSIZE(FunctionBar_FEvents);
    }
    return this;
 }
@@ -78,9 +70,9 @@ void FunctionBar_delete(FunctionBar* this) {
    free(this->functions);
    if (!this->staticData) {
       for (int i = 0; i < this->size; i++) {
-         free(this->keys[i]);
+         free(this->keys.keys[i]);
       }
-      free(this->keys);
+      free(this->keys.keys);
       free(this->events);
    }
    free(this);
@@ -96,37 +88,61 @@ void FunctionBar_setLabel(FunctionBar* this, int event, const char* text) {
    }
 }
 
-void FunctionBar_draw(const FunctionBar* this, char* buffer) {
-   FunctionBar_drawAttr(this, buffer, CRT_colors[FUNCTION_BAR]);
+void FunctionBar_draw(const FunctionBar* this) {
+   FunctionBar_drawExtra(this, NULL, -1, false);
 }
 
-void FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr) {
+void FunctionBar_drawExtra(const FunctionBar* this, const char* buffer, int attr, bool setCursor) {
    attrset(CRT_colors[FUNCTION_BAR]);
-   mvhline(LINES-1, 0, ' ', COLS);
+   mvhline(LINES - 1, 0, ' ', COLS);
    int x = 0;
    for (int i = 0; i < this->size; i++) {
       attrset(CRT_colors[FUNCTION_KEY]);
-      mvaddstr(LINES-1, x, this->keys[i]);
-      x += strlen(this->keys[i]);
+      mvaddstr(LINES - 1, x, this->keys.constKeys[i]);
+      x += strlen(this->keys.constKeys[i]);
       attrset(CRT_colors[FUNCTION_BAR]);
-      mvaddstr(LINES-1, x, this->functions[i]);
+      mvaddstr(LINES - 1, x, this->functions[i]);
       x += strlen(this->functions[i]);
    }
+
    if (buffer) {
-      attrset(attr);
-      mvaddstr(LINES-1, x, buffer);
-      CRT_cursorX = x + strlen(buffer);
+      if (attr == -1) {
+         attrset(CRT_colors[FUNCTION_BAR]);
+      } else {
+         attrset(attr);
+      }
+      mvaddstr(LINES - 1, x, buffer);
+      x += strlen(buffer);
+   }
+
+   attrset(CRT_colors[RESET_COLOR]);
+
+   if (setCursor) {
+      CRT_cursorX = x;
       curs_set(1);
    } else {
       curs_set(0);
    }
+
+   currentLen = x;
+}
+
+void FunctionBar_append(const char* buffer, int attr) {
+   if (attr == -1) {
+      attrset(CRT_colors[FUNCTION_BAR]);
+   } else {
+      attrset(attr);
+   }
+   mvaddstr(LINES - 1, currentLen + 1, buffer);
    attrset(CRT_colors[RESET_COLOR]);
+
+   currentLen += strlen(buffer) + 1;
 }
 
 int FunctionBar_synthesizeEvent(const FunctionBar* this, int pos) {
    int x = 0;
    for (int i = 0; i < this->size; i++) {
-      x += strlen(this->keys[i]);
+      x += strlen(this->keys.constKeys[i]);
       x += strlen(this->functions[i]);
       if (pos < x) {
          return this->events[i];

FunctionBar.h

@@ -1,27 +1,26 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_FunctionBar
 #define HEADER_FunctionBar
 /*
 htop - FunctionBar.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-
 #include <stdbool.h>
 
+
 typedef struct FunctionBar_ {
    int size;
    char** functions;
-   char** keys;
+   union {
+      char** keys;
+      const char* const* constKeys;
+   } keys;
    int* events;
    bool staticData;
 } FunctionBar;
 
-
-
 FunctionBar* FunctionBar_newEnterEsc(const char* enter, const char* esc);
 
 FunctionBar* FunctionBar_new(const char* const* functions, const char* const* keys, const int* events);
@@ -30,9 +29,11 @@ void FunctionBar_delete(FunctionBar* this);
 
 void FunctionBar_setLabel(FunctionBar* this, int event, const char* text);
 
-void FunctionBar_draw(const FunctionBar* this, char* buffer);
+void FunctionBar_draw(const FunctionBar* this);
 
-void FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr);
+void FunctionBar_drawExtra(const FunctionBar* this, const char* buffer, int attr, bool setCursor);
+
+void FunctionBar_append(const char* buffer, int attr);
 
 int FunctionBar_synthesizeEvent(const FunctionBar* this, int pos);
 

Hashtable.c

@@ -1,172 +1,326 @@
 /*
 htop - Hashtable.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "Hashtable.h"
-#include "XAlloc.h"
 
-#include <stdlib.h>
 #include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
 
-/*{
-#include <stdbool.h>
+#include "CRT.h"
+#include "Macros.h"
+#include "XUtils.h"
 
-typedef struct Hashtable_ Hashtable;
+#ifndef NDEBUG
+#include <stdio.h>
+#endif
 
-typedef void(*Hashtable_PairFunction)(int, void*, void*);
 
-typedef struct HashtableItem {
-   unsigned int key;
+typedef struct HashtableItem_ {
+   ht_key_t key;
+   size_t probe;
    void* value;
-   struct HashtableItem* next;
 } HashtableItem;
 
 struct Hashtable_ {
-   int size;
-   HashtableItem** buckets;
-   int items;
+   size_t size;
+   HashtableItem* buckets;
+   size_t items;
    bool owner;
 };
-}*/
 
-#ifdef DEBUG
 
-static bool Hashtable_isConsistent(Hashtable* this) {
-   int items = 0;
-   for (int i = 0; i < this->size; i++) {
-      HashtableItem* bucket = this->buckets[i];
-      while (bucket) {
+#ifndef NDEBUG
+
+static void Hashtable_dump(const Hashtable* this) {
+   fprintf(stderr, "Hashtable %p: size=%zu items=%zu owner=%s\n",
+           (const void*)this,
+           this->size,
+           this->items,
+           this->owner ? "yes" : "no");
+
+   size_t items = 0;
+   for (size_t i = 0; i < this->size; i++) {
+      fprintf(stderr, "  item %5zu: key = %5u probe = %2zu value = %p\n",
+              i,
+              this->buckets[i].key,
+              this->buckets[i].probe,
+              this->buckets[i].value ? (const void*)this->buckets[i].value : "(nil)");
+
+      if (this->buckets[i].value)
          items++;
-         bucket = bucket->next;
-      }
    }
-   return items == this->items;
+
+   fprintf(stderr, "Hashtable %p: items=%zu counted=%zu\n",
+           (const void*)this,
+           this->items,
+           items);
 }
 
-int Hashtable_count(Hashtable* this) {
-   int items = 0;
-   for (int i = 0; i < this->size; i++) {
-      HashtableItem* bucket = this->buckets[i];
-      while (bucket) {
+static bool Hashtable_isConsistent(const Hashtable* this) {
+   size_t items = 0;
+   for (size_t i = 0; i < this->size; i++) {
+      if (this->buckets[i].value)
+         items++;
+   }
+   bool res = items == this->items;
+   if (!res)
+      Hashtable_dump(this);
+   return res;
+}
+
+size_t Hashtable_count(const Hashtable* this) {
+   size_t items = 0;
+   for (size_t i = 0; i < this->size; i++) {
+      if (this->buckets[i].value)
          items++;
-         bucket = bucket->next;
-      }
    }
    assert(items == this->items);
    return items;
 }
 
-#endif
+#endif /* NDEBUG */
 
-static HashtableItem* HashtableItem_new(unsigned int key, void* value) {
-   HashtableItem* this;
-   
-   this = xMalloc(sizeof(HashtableItem));
-   this->key = key;
-   this->value = value;
-   this->next = NULL;
-   return this;
+/* https://oeis.org/A014234 */
+static const uint64_t OEISprimes[] = {
+   2, 3, 7, 13, 31, 61, 127, 251, 509, 1021, 2039, 4093, 8191,
+   16381, 32749, 65521, 131071, 262139, 524287, 1048573,
+   2097143, 4194301, 8388593, 16777213, 33554393,
+   67108859, 134217689, 268435399, 536870909, 1073741789,
+   2147483647, 4294967291, 8589934583, 17179869143,
+   34359738337, 68719476731, 137438953447
+};
+
+static size_t nextPrime(size_t n) {
+   /* on 32-bit make sure we do not return primes not fitting in size_t */
+   for (size_t i = 0; i < ARRAYSIZE(OEISprimes) && OEISprimes[i] < SIZE_MAX; i++) {
+      if (n <= OEISprimes[i])
+         return OEISprimes[i];
+   }
+
+   CRT_fatalError("Hashtable: no prime found");
 }
 
-Hashtable* Hashtable_new(int size, bool owner) {
+Hashtable* Hashtable_new(size_t size, bool owner) {
    Hashtable* this;
-   
+
    this = xMalloc(sizeof(Hashtable));
    this->items = 0;
-   this->size = size;
-   this->buckets = (HashtableItem**) xCalloc(size, sizeof(HashtableItem*));
+   this->size = size ? nextPrime(size) : 13;
+   this->buckets = (HashtableItem*) xCalloc(this->size, sizeof(HashtableItem));
    this->owner = owner;
+
    assert(Hashtable_isConsistent(this));
    return this;
 }
 
 void Hashtable_delete(Hashtable* this) {
-   assert(Hashtable_isConsistent(this));
-   for (int i = 0; i < this->size; i++) {
-      HashtableItem* walk = this->buckets[i];
-      while (walk != NULL) {
-         if (this->owner)
-            free(walk->value);
-         HashtableItem* savedWalk = walk;
-         walk = savedWalk->next;
-         free(savedWalk);
-      }
-   }
+   Hashtable_clear(this);
+
    free(this->buckets);
    free(this);
 }
 
-void Hashtable_put(Hashtable* this, unsigned int key, void* value) {
-   unsigned int index = key % this->size;
-   HashtableItem** bucketPtr = &(this->buckets[index]);
-   while (true)
-      if (*bucketPtr == NULL) {
-         *bucketPtr = HashtableItem_new(key, value);
+void Hashtable_clear(Hashtable* this) {
+   assert(Hashtable_isConsistent(this));
+
+   if (this->owner)
+      for (size_t i = 0; i < this->size; i++)
+         free(this->buckets[i].value);
+
+   memset(this->buckets, 0, this->size * sizeof(HashtableItem));
+   this->items = 0;
+
+   assert(Hashtable_isConsistent(this));
+}
+
+static void insert(Hashtable* this, ht_key_t key, void* value) {
+   size_t index = key % this->size;
+   size_t probe = 0;
+#ifndef NDEBUG
+   size_t origIndex = index;
+#endif
+
+   for (;;) {
+      if (!this->buckets[index].value) {
          this->items++;
-         break;
-      } else if ((*bucketPtr)->key == key) {
-         if (this->owner)
-            free((*bucketPtr)->value);
-         (*bucketPtr)->value = value;
-         break;
-      } else
-         bucketPtr = &((*bucketPtr)->next);
-   assert(Hashtable_isConsistent(this));
-}
-
-void* Hashtable_remove(Hashtable* this, unsigned int key) {
-   unsigned int index = key % this->size;
-   
-   assert(Hashtable_isConsistent(this));
-
-   HashtableItem** bucket; 
-   for (bucket = &(this->buckets[index]); *bucket; bucket = &((*bucket)->next) ) {
-      if ((*bucket)->key == key) {
-         void* value = (*bucket)->value;
-         HashtableItem* next = (*bucket)->next;
-         free(*bucket);
-         (*bucket) = next;
-         this->items--;
-         if (this->owner) {
-            free(value);
-            assert(Hashtable_isConsistent(this));
-            return NULL;
-         } else {
-            assert(Hashtable_isConsistent(this));
-            return value;
-         }
+         this->buckets[index].key = key;
+         this->buckets[index].probe = probe;
+         this->buckets[index].value = value;
+         return;
       }
+
+      if (this->buckets[index].key == key) {
+         if (this->owner && this->buckets[index].value != value)
+            free(this->buckets[index].value);
+         this->buckets[index].value = value;
+         return;
+      }
+
+      /* Robin Hood swap */
+      if (probe > this->buckets[index].probe) {
+         HashtableItem tmp = this->buckets[index];
+
+         this->buckets[index].key = key;
+         this->buckets[index].probe = probe;
+         this->buckets[index].value = value;
+
+         key = tmp.key;
+         probe = tmp.probe;
+         value = tmp.value;
+      }
+
+      index = (index + 1) % this->size;
+      probe++;
+
+      assert(index != origIndex);
    }
-   assert(Hashtable_isConsistent(this));
-   return NULL;
 }
 
-inline void* Hashtable_get(Hashtable* this, unsigned int key) {
-   unsigned int index = key % this->size;
-   HashtableItem* bucketPtr = this->buckets[index];
-   while (true) {
-      if (bucketPtr == NULL) {
-         assert(Hashtable_isConsistent(this));
-         return NULL;
-      } else if (bucketPtr->key == key) {
-         assert(Hashtable_isConsistent(this));
-         return bucketPtr->value;
-      } else
-         bucketPtr = bucketPtr->next;
+void Hashtable_setSize(Hashtable* this, size_t size) {
+
+   assert(Hashtable_isConsistent(this));
+
+   if (size <= this->items)
+      return;
+
+   HashtableItem* oldBuckets = this->buckets;
+   size_t oldSize = this->size;
+
+   this->size = nextPrime(size);
+   this->buckets = (HashtableItem*) xCalloc(this->size, sizeof(HashtableItem));
+   this->items = 0;
+
+   /* rehash */
+   for (size_t i = 0; i < oldSize; i++) {
+      if (!oldBuckets[i].value)
+         continue;
+
+      insert(this, oldBuckets[i].key, oldBuckets[i].value);
    }
+
+   free(oldBuckets);
+
+   assert(Hashtable_isConsistent(this));
+}
+
+void Hashtable_put(Hashtable* this, ht_key_t key, void* value) {
+
+   assert(Hashtable_isConsistent(this));
+   assert(this->size > 0);
+   assert(value);
+
+   /* grow on load-factor > 0.7 */
+   if (10 * this->items > 7 * this->size) {
+      if (SIZE_MAX / 2 < this->size)
+         CRT_fatalError("Hashtable: size overflow");
+
+      Hashtable_setSize(this, 2 * this->size);
+   }
+
+   insert(this, key, value);
+
+   assert(Hashtable_isConsistent(this));
+   assert(Hashtable_get(this, key) != NULL);
+   assert(this->size > this->items);
+}
+
+void* Hashtable_remove(Hashtable* this, ht_key_t key) {
+   size_t index = key % this->size;
+   size_t probe = 0;
+#ifndef NDEBUG
+   size_t origIndex = index;
+#endif
+
+   assert(Hashtable_isConsistent(this));
+
+   void* res = NULL;
+
+   while (this->buckets[index].value) {
+      if (this->buckets[index].key == key) {
+         if (this->owner) {
+            free(this->buckets[index].value);
+         } else {
+            res = this->buckets[index].value;
+         }
+
+         size_t next = (index + 1) % this->size;
+
+         while (this->buckets[next].value && this->buckets[next].probe > 0) {
+            this->buckets[index] = this->buckets[next];
+            this->buckets[index].probe -= 1;
+
+            index = next;
+            next = (index + 1) % this->size;
+         }
+
+         /* set empty after backward shifting */
+         this->buckets[index].value = NULL;
+         this->items--;
+
+         break;
+      }
+
+      if (this->buckets[index].probe < probe)
+         break;
+
+      index = (index + 1) % this->size;
+      probe++;
+
+      assert(index != origIndex);
+   }
+
+   assert(Hashtable_isConsistent(this));
+   assert(Hashtable_get(this, key) == NULL);
+
+   /* shrink on load-factor < 0.125 */
+   if (8 * this->items < this->size)
+      Hashtable_setSize(this, this->size / 2);
+
+   return res;
+}
+
+void* Hashtable_get(Hashtable* this, ht_key_t key) {
+   size_t index = key % this->size;
+   size_t probe = 0;
+   void* res = NULL;
+#ifndef NDEBUG
+   size_t origIndex = index;
+#endif
+
+   assert(Hashtable_isConsistent(this));
+
+   while (this->buckets[index].value) {
+      if (this->buckets[index].key == key) {
+         res = this->buckets[index].value;
+         break;
+      }
+
+      if (this->buckets[index].probe < probe)
+         break;
+
+      index = (index + 1) != this->size ? (index + 1) : 0;
+      probe++;
+
+      assert(index != origIndex);
+   }
+
+   return res;
 }
 
 void Hashtable_foreach(Hashtable* this, Hashtable_PairFunction f, void* userData) {
    assert(Hashtable_isConsistent(this));
-   for (int i = 0; i < this->size; i++) {
-      HashtableItem* walk = this->buckets[i];
-      while (walk != NULL) {
+   for (size_t i = 0; i < this->size; i++) {
+      HashtableItem* walk = &this->buckets[i];
+      if (walk->value)
          f(walk->key, walk->value, userData);
-         walk = walk->next;
-      }
    }
    assert(Hashtable_isConsistent(this));
 }

Hashtable.h

@@ -1,48 +1,41 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Hashtable
 #define HEADER_Hashtable
 /*
 htop - Hashtable.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include <stdbool.h>
+#include <stddef.h>
+
+
+typedef unsigned int ht_key_t;
+
+typedef void(*Hashtable_PairFunction)(ht_key_t key, void* value, void* userdata);
 
 typedef struct Hashtable_ Hashtable;
 
-typedef void(*Hashtable_PairFunction)(int, void*, void*);
+#ifndef NDEBUG
 
-typedef struct HashtableItem {
-   unsigned int key;
-   void* value;
-   struct HashtableItem* next;
-} HashtableItem;
+size_t Hashtable_count(const Hashtable* this);
 
-struct Hashtable_ {
-   int size;
-   HashtableItem** buckets;
-   int items;
-   bool owner;
-};
+#endif /* NDEBUG */
 
-#ifdef DEBUG
-
-int Hashtable_count(Hashtable* this);
-
-#endif
-
-Hashtable* Hashtable_new(int size, bool owner);
+Hashtable* Hashtable_new(size_t size, bool owner);
 
 void Hashtable_delete(Hashtable* this);
 
-void Hashtable_put(Hashtable* this, unsigned int key, void* value);
+void Hashtable_clear(Hashtable* this);
 
-void* Hashtable_remove(Hashtable* this, unsigned int key);
+void Hashtable_setSize(Hashtable* this, size_t size);
 
-extern void* Hashtable_get(Hashtable* this, unsigned int key);
+void Hashtable_put(Hashtable* this, ht_key_t key, void* value);
+
+void* Hashtable_remove(Hashtable* this, ht_key_t key);
+
+void* Hashtable_get(Hashtable* this, ht_key_t key);
 
 void Hashtable_foreach(Hashtable* this, Hashtable_PairFunction f, void* userData);
 

Header.c

@@ -1,54 +1,41 @@
 /*
 htop - Header.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Header.h"
 
-#include "CRT.h"
-#include "StringUtils.h"
-#include "Platform.h"
-
 #include <assert.h>
-#include <time.h>
-#include <string.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
-/*{
-#include "Meter.h"
-#include "Settings.h"
-#include "Vector.h"
+#include "CRT.h"
+#include "CPUMeter.h"
+#include "DynamicMeter.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct Header_ {
-   Vector** columns;
-   Settings* settings;
-   struct ProcessList_* pl;
-   int nrColumns;
-   int pad;
-   int height;
-} Header;
 
-}*/
-
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-#ifndef Header_forEachColumn
-#define Header_forEachColumn(this_, i_) for (int (i_)=0; (i_) < (this_)->nrColumns; ++(i_))
-#endif
-
-Header* Header_new(struct ProcessList_* pl, Settings* settings, int nrColumns) {
+Header* Header_new(ProcessList* pl, Settings* settings, HeaderLayout hLayout) {
    Header* this = xCalloc(1, sizeof(Header));
-   this->columns = xCalloc(nrColumns, sizeof(Vector*));
+   this->columns = xMallocArray(HeaderLayout_getColumns(hLayout), sizeof(Vector*));
    this->settings = settings;
    this->pl = pl;
-   this->nrColumns = nrColumns;
+   this->headerLayout = hLayout;
+
    Header_forEachColumn(this, i) {
       this->columns[i] = Vector_new(Class(Meter), true, DEFAULT_SIZE);
    }
+
    return this;
 }
 
@@ -56,44 +43,122 @@ void Header_delete(Header* this) {
    Header_forEachColumn(this, i) {
       Vector_delete(this->columns[i]);
    }
+
    free(this->columns);
    free(this);
 }
 
-void Header_populateFromSettings(Header* this) {
-   Header_forEachColumn(this, col) {
-      MeterColumnSettings* colSettings = &this->settings->columns[col];
-      for (int i = 0; i < colSettings->len; i++) {
-         Header_addMeterByName(this, colSettings->names[i], col);
-         if (colSettings->modes[i] != 0) {
-            Header_setMode(this, i, colSettings->modes[i], col);
+void Header_setLayout(Header* this, HeaderLayout hLayout) {
+   size_t oldColumns = HeaderLayout_getColumns(this->headerLayout);
+   size_t newColumns = HeaderLayout_getColumns(hLayout);
+
+   this->headerLayout = hLayout;
+
+   if (newColumns == oldColumns)
+      return;
+
+   if (newColumns > oldColumns) {
+      this->columns = xReallocArray(this->columns, newColumns, sizeof(Vector*));
+      for (size_t i = oldColumns; i < newColumns; i++)
+         this->columns[i] = Vector_new(Class(Meter), true, DEFAULT_SIZE);
+   } else {
+      // move meters from to-be-deleted columns into last one
+      for (size_t i = newColumns; i < oldColumns; i++) {
+         for (int j = this->columns[i]->items - 1; j >= 0; j--) {
+            Vector_add(this->columns[newColumns - 1], Vector_take(this->columns[i], j));
+         }
+         Vector_delete(this->columns[i]);
+      }
+      this->columns = xReallocArray(this->columns, newColumns, sizeof(Vector*));
+   }
+
+   Header_calculateHeight(this);
+}
+
+static void Header_addMeterByName(Header* this, const char* name, MeterModeId mode, unsigned int column) {
+   assert(column < HeaderLayout_getColumns(this->headerLayout));
+
+   Vector* meters = this->columns[column];
+
+   const char* paren = strchr(name, '(');
+   unsigned int param = 0;
+   size_t nameLen;
+   if (paren) {
+      int ok = sscanf(paren, "(%10u)", &param); // CPUMeter
+      if (!ok) {
+         char dynamic[32] = {0};
+         if (sscanf(paren, "(%30s)", dynamic)) { // DynamicMeter
+            char* end;
+            if ((end = strrchr(dynamic, ')')) == NULL)
+               return;    // htoprc parse failure
+            *end = '\0';
+            if (!DynamicMeter_search(this->pl->dynamicMeters, dynamic, &param))
+               return;    // name lookup failure
+         } else {
+            param = 0;
          }
       }
+      nameLen = paren - name;
+   } else {
+      nameLen = strlen(name);
    }
+
+   for (const MeterClass* const* type = Platform_meterTypes; *type; type++) {
+      if (0 == strncmp(name, (*type)->name, nameLen) && (*type)->name[nameLen] == '\0') {
+         Meter* meter = Meter_new(this->pl, param, *type);
+         if (mode != 0) {
+            Meter_setMode(meter, mode);
+         }
+         Vector_add(meters, meter);
+         break;
+      }
+   }
+}
+
+void Header_populateFromSettings(Header* this) {
+   Header_setLayout(this, this->settings->hLayout);
+
+   Header_forEachColumn(this, col) {
+      const MeterColumnSetting* colSettings = &this->settings->hColumns[col];
+      Vector_prune(this->columns[col]);
+      for (size_t i = 0; i < colSettings->len; i++) {
+         Header_addMeterByName(this, colSettings->names[i], colSettings->modes[i], col);
+      }
+   }
+
    Header_calculateHeight(this);
 }
 
 void Header_writeBackToSettings(const Header* this) {
+   Settings_setHeaderLayout(this->settings, this->headerLayout);
+
    Header_forEachColumn(this, col) {
-      MeterColumnSettings* colSettings = &this->settings->columns[col];
-      
-      String_freeArray(colSettings->names);
+      MeterColumnSetting* colSettings = &this->settings->hColumns[col];
+
+      if (colSettings->names) {
+         for (size_t j = 0; j < colSettings->len; j++)
+            free(colSettings->names[j]);
+         free(colSettings->names);
+      }
       free(colSettings->modes);
-      
-      Vector* vec = this->columns[col];
+
+      const Vector* vec = this->columns[col];
       int len = Vector_size(vec);
-      
-      colSettings->names = xCalloc(len+1, sizeof(char*));
-      colSettings->modes = xCalloc(len, sizeof(int));
+
+      colSettings->names = len ? xCalloc(len, sizeof(char*)) : NULL;
+      colSettings->modes = len ? xCalloc(len, sizeof(int)) : NULL;
       colSettings->len = len;
-      
+
       for (int i = 0; i < len; i++) {
-         Meter* meter = (Meter*) Vector_get(vec, i);
-         char* name = xCalloc(64, sizeof(char));
-         if (meter->param) {
-            xSnprintf(name, 63, "%s(%d)", As_Meter(meter)->name, meter->param);
+         const Meter* meter = (Meter*) Vector_get(vec, i);
+         char* name;
+         if (meter->param && As_Meter(meter) == &DynamicMeter_class) {
+            const char* dynamic = DynamicMeter_lookup(this->pl->dynamicMeters, meter->param);
+            xAsprintf(&name, "%s(%s)", As_Meter(meter)->name, dynamic);
+         } else if (meter->param && As_Meter(meter) == &CPUMeter_class) {
+            xAsprintf(&name, "%s(%u)", As_Meter(meter)->name, meter->param);
          } else {
-            xSnprintf(name, 63, "%s", As_Meter(meter)->name);
+            xAsprintf(&name, "%s", As_Meter(meter)->name);
          }
          colSettings->names[i] = name;
          colSettings->modes[i] = meter->mode;
@@ -101,38 +166,9 @@ void Header_writeBackToSettings(const Header* this) {
    }
 }
 
-MeterModeId Header_addMeterByName(Header* this, char* name, int column) {
-   Vector* meters = this->columns[column];
+Meter* Header_addMeterByClass(Header* this, const MeterClass* type, unsigned int param, unsigned int column) {
+   assert(column < HeaderLayout_getColumns(this->headerLayout));
 
-   char* paren = strchr(name, '(');
-   int param = 0;
-   if (paren) {
-      int ok = sscanf(paren, "(%10d)", &param);
-      if (!ok) param = 0;
-      *paren = '\0';
-   }
-   MeterModeId mode = TEXT_METERMODE;
-   for (MeterClass** type = Platform_meterTypes; *type; type++) {
-      if (String_eq(name, (*type)->name)) {
-         Meter* meter = Meter_new(this->pl, param, *type);
-         Vector_add(meters, meter);
-         mode = meter->mode;
-         break;
-      }
-   }
-   return mode;
-}
-
-void Header_setMode(Header* this, int i, MeterModeId mode, int column) {
-   Vector* meters = this->columns[column];
-
-   if (i >= Vector_size(meters))
-      return;
-   Meter* meter = (Meter*) Vector_get(meters, i);
-   Meter_setMode(meter, mode);
-}
-
-Meter* Header_addMeterByClass(Header* this, MeterClass* type, int param, int column) {
    Vector* meters = this->columns[column];
 
    Meter* meter = Meter_new(this->pl, param, type);
@@ -140,76 +176,109 @@ Meter* Header_addMeterByClass(Header* this, MeterClass* type, int param, int col
    return meter;
 }
 
-int Header_size(Header* this, int column) {
-   Vector* meters = this->columns[column];
-   return Vector_size(meters);
-}
-
-char* Header_readMeterName(Header* this, int i, int column) {
-   Vector* meters = this->columns[column];
-   Meter* meter = (Meter*) Vector_get(meters, i);
-
-   int nameLen = strlen(Meter_name(meter));
-   int len = nameLen + 100;
-   char* name = xMalloc(len);
-   strncpy(name, Meter_name(meter), nameLen);
-   name[nameLen] = '\0';
-   if (meter->param)
-      xSnprintf(name + nameLen, len - nameLen, "(%d)", meter->param);
-
-   return name;
-}
-
-MeterModeId Header_readMeterMode(Header* this, int i, int column) {
-   Vector* meters = this->columns[column];
-
-   Meter* meter = (Meter*) Vector_get(meters, i);
-   return meter->mode;
-}
-
 void Header_reinit(Header* this) {
    Header_forEachColumn(this, col) {
       for (int i = 0; i < Vector_size(this->columns[col]); i++) {
          Meter* meter = (Meter*) Vector_get(this->columns[col], i);
-         if (Meter_initFn(meter))
+         if (Meter_initFn(meter)) {
             Meter_init(meter);
+         }
       }
    }
 }
 
 void Header_draw(const Header* this) {
-   int height = this->height;
-   int pad = this->pad;
+   const int height = this->height;
+   const int pad = this->pad;
    attrset(CRT_colors[RESET_COLOR]);
    for (int y = 0; y < height; y++) {
       mvhline(y, 0, ' ', COLS);
    }
-   int width = COLS / this->nrColumns - (pad * this->nrColumns - 1) - 1;
+   const int width = COLS - pad;
    int x = pad;
-   
+   float roundingLoss = 0.0F;
+
    Header_forEachColumn(this, col) {
       Vector* meters = this->columns[col];
+      float colWidth = (float)width * HeaderLayout_layouts[this->headerLayout].widths[col] / 100.0F;
+
+      roundingLoss += colWidth - floorf(colWidth);
+      if (roundingLoss >= 1.0F) {
+         colWidth += 1.0F;
+         roundingLoss -= 1.0F;
+      }
+
       for (int y = (pad / 2), i = 0; i < Vector_size(meters); i++) {
          Meter* meter = (Meter*) Vector_get(meters, i);
-         meter->draw(meter, x, y, width);
+
+         float actualWidth = colWidth;
+         if (meter->mode == TEXT_METERMODE) {
+            for (int j = 1; j < meter->columnWidthCount; j++) {
+               actualWidth += (float)width * HeaderLayout_layouts[this->headerLayout].widths[col + j] / 100.0F;
+            }
+         }
+
+         assert(meter->draw);
+         meter->draw(meter, x, y, floorf(actualWidth));
          y += meter->h;
       }
-      x += width + pad;
+
+      x += floorf(colWidth);
    }
 }
 
+void Header_updateData(Header* this) {
+   Header_forEachColumn(this, col) {
+      Vector* meters = this->columns[col];
+      int items = Vector_size(meters);
+      for (int i = 0; i < items; i++) {
+         Meter* meter = (Meter*) Vector_get(meters, i);
+         Meter_updateValues(meter);
+      }
+   }
+}
+
+/*
+ * Calculate how many columns the current meter is allowed to span,
+ * by counting how many columns to the right are empty or contain a BlankMeter.
+ * Returns the number of columns to span, i.e. if the direct neighbor is occupied 1.
+ */
+static int calcColumnWidthCount(const Header* this, const Meter* curMeter, const int pad, const unsigned int curColumn, const int curHeight) {
+   for (size_t i = curColumn + 1; i < HeaderLayout_getColumns(this->headerLayout); i++) {
+      const Vector* meters = this->columns[i];
+
+      int height = pad;
+      for (int j = 0; j < Vector_size(meters); j++) {
+         const Meter* meter = (const Meter*) Vector_get(meters, j);
+
+         if (height >= curHeight + curMeter->h)
+            break;
+
+         height += meter->h;
+         if (height <= curHeight)
+            continue;
+
+         if (!Object_isA((const Object*) meter, (const ObjectClass*) &BlankMeter_class))
+            return i - curColumn;
+      }
+   }
+
+   return HeaderLayout_getColumns(this->headerLayout) - curColumn;
+}
+
 int Header_calculateHeight(Header* this) {
-   int pad = this->settings->headerMargin ? 2 : 0;
+   const int pad = this->settings->headerMargin ? 2 : 0;
    int maxHeight = pad;
 
    Header_forEachColumn(this, col) {
-      Vector* meters = this->columns[col];
+      const Vector* meters = this->columns[col];
       int height = pad;
       for (int i = 0; i < Vector_size(meters); i++) {
          Meter* meter = (Meter*) Vector_get(meters, i);
+         meter->columnWidthCount = calcColumnWidthCount(this, meter, pad, col, height);
          height += meter->h;
       }
-      maxHeight = MAX(maxHeight, height);
+      maxHeight = MAXIMUM(maxHeight, height);
    }
    this->height = maxHeight;
    this->pad = pad;

Header.h

@@ -1,60 +1,48 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Header
 #define HEADER_Header
 /*
 htop - Header.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "HeaderLayout.h"
 #include "Meter.h"
+#include "ProcessList.h"
 #include "Settings.h"
 #include "Vector.h"
 
+
 typedef struct Header_ {
    Vector** columns;
    Settings* settings;
-   struct ProcessList_* pl;
-   int nrColumns;
+   ProcessList* pl;
+   HeaderLayout headerLayout;
    int pad;
    int height;
 } Header;
 
+#define Header_forEachColumn(this_, i_) for (size_t (i_)=0; (i_) < HeaderLayout_getColumns((this_)->headerLayout); ++(i_))
 
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-#ifndef Header_forEachColumn
-#define Header_forEachColumn(this_, i_) for (int (i_)=0; (i_) < (this_)->nrColumns; ++(i_))
-#endif
-
-Header* Header_new(struct ProcessList_* pl, Settings* settings, int nrColumns);
+Header* Header_new(ProcessList* pl, Settings* settings, HeaderLayout hLayout);
 
 void Header_delete(Header* this);
 
+void Header_setLayout(Header* this, HeaderLayout hLayout);
+
 void Header_populateFromSettings(Header* this);
 
 void Header_writeBackToSettings(const Header* this);
 
-MeterModeId Header_addMeterByName(Header* this, char* name, int column);
-
-void Header_setMode(Header* this, int i, MeterModeId mode, int column);
-
-Meter* Header_addMeterByClass(Header* this, MeterClass* type, int param, int column);
-
-int Header_size(Header* this, int column);
-
-char* Header_readMeterName(Header* this, int i, int column);
-
-MeterModeId Header_readMeterMode(Header* this, int i, int column);
+Meter* Header_addMeterByClass(Header* this, const MeterClass* type, unsigned int param, unsigned int column);
 
 void Header_reinit(Header* this);
 
 void Header_draw(const Header* this);
 
+void Header_updateData(Header* this);
+
 int Header_calculateHeight(Header* this);
 
 #endif

HeaderLayout.h

@@ -0,0 +1,77 @@
+#ifndef HEADER_HeaderLayout
+#define HEADER_HeaderLayout
+/*
+htop - HeaderLayout.h
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "Macros.h"
+#include "XUtils.h"
+
+
+typedef enum HeaderLayout_ {
+   HF_TWO_50_50,
+   HF_TWO_33_67,
+   HF_TWO_67_33,
+   HF_THREE_33_34_33,
+   HF_THREE_25_25_50,
+   HF_THREE_25_50_25,
+   HF_THREE_50_25_25,
+   HF_THREE_40_20_40,
+   HF_FOUR_25_25_25_25,
+   LAST_HEADER_LAYOUT
+} HeaderLayout;
+
+static const struct {
+   uint8_t columns;
+   const uint8_t widths[4];
+   const char* name;
+   const char* description;
+} HeaderLayout_layouts[LAST_HEADER_LAYOUT] = {
+   [HF_TWO_50_50]        = { 2, { 50, 50,  0,  0 }, "two_50_50",        "2 columns - 50/50 (default)", },
+   [HF_TWO_33_67]        = { 2, { 33, 67,  0,  0 }, "two_33_67",        "2 columns - 33/67",           },
+   [HF_TWO_67_33]        = { 2, { 67, 33,  0,  0 }, "two_67_33",        "2 columns - 67/33",           },
+   [HF_THREE_33_34_33]   = { 3, { 33, 34, 33,  0 }, "three_33_34_33",   "3 columns - 33/34/33",        },
+   [HF_THREE_25_25_50]   = { 3, { 25, 25, 50,  0 }, "three_25_25_50",   "3 columns - 25/25/50",        },
+   [HF_THREE_25_50_25]   = { 3, { 25, 50, 25,  0 }, "three_25_50_25",   "3 columns - 25/50/25",        },
+   [HF_THREE_50_25_25]   = { 3, { 50, 25, 25,  0 }, "three_50_25_25",   "3 columns - 50/25/25",        },
+   [HF_THREE_40_20_40]   = { 3, { 40, 20, 40,  0 }, "three_40_20_40",   "3 columns - 40/20/40",        },
+   [HF_FOUR_25_25_25_25] = { 4, { 25, 25, 25, 25 }, "four_25_25_25_25", "4 columns - 25/25/25/25",     },
+};
+
+static inline size_t HeaderLayout_getColumns(HeaderLayout hLayout) {
+   /* assert the layout is initialized */
+   assert(0 <= hLayout);
+   assert(hLayout < LAST_HEADER_LAYOUT);
+   assert(HeaderLayout_layouts[hLayout].name[0]);
+   assert(HeaderLayout_layouts[hLayout].description[0]);
+   return HeaderLayout_layouts[hLayout].columns;
+}
+
+static inline const char* HeaderLayout_getName(HeaderLayout hLayout) {
+   /* assert the layout is initialized */
+   assert(0 <= hLayout);
+   assert(hLayout < LAST_HEADER_LAYOUT);
+   assert(HeaderLayout_layouts[hLayout].name[0]);
+   assert(HeaderLayout_layouts[hLayout].description[0]);
+   return HeaderLayout_layouts[hLayout].name;
+}
+
+static inline HeaderLayout HeaderLayout_fromName(const char* name) {
+   for (size_t i = 0; i < LAST_HEADER_LAYOUT; i++) {
+      if (String_eq(HeaderLayout_layouts[i].name, name))
+         return (HeaderLayout) i;
+   }
+
+   return LAST_HEADER_LAYOUT;
+}
+
+#endif /* HEADER_HeaderLayout */

HeaderOptionsPanel.c

@@ -0,0 +1,87 @@
+/*
+htop - HeaderOptionsPanel.c
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "HeaderOptionsPanel.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "HeaderLayout.h"
+#include "Object.h"
+#include "OptionItem.h"
+#include "ProvideCurses.h"
+
+
+static const char* const HeaderOptionsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
+
+static void HeaderOptionsPanel_delete(Object* object) {
+   Panel* super = (Panel*) object;
+   HeaderOptionsPanel* this = (HeaderOptionsPanel*) object;
+   Panel_done(super);
+   free(this);
+}
+
+static HandlerResult HeaderOptionsPanel_eventHandler(Panel* super, int ch) {
+   HeaderOptionsPanel* this = (HeaderOptionsPanel*) super;
+
+   HandlerResult result = IGNORED;
+   int mark;
+
+   switch(ch) {
+   case 0x0a:
+   case 0x0d:
+   case KEY_ENTER:
+   case KEY_MOUSE:
+   case KEY_RECLICK:
+   case ' ':
+      mark = Panel_getSelectedIndex(super);
+      assert(mark >= 0);
+      assert(mark < LAST_HEADER_LAYOUT);
+
+      for (int i = 0; i < LAST_HEADER_LAYOUT; i++)
+         CheckItem_set((CheckItem*)Panel_get(super, i), false);
+      CheckItem_set((CheckItem*)Panel_get(super, mark), true);
+
+      Header_setLayout(this->scr->header, mark);
+      this->settings->changed = true;
+
+      ScreenManager_resize(this->scr);
+
+      result = HANDLED;
+   }
+
+   return result;
+}
+
+const PanelClass HeaderOptionsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = HeaderOptionsPanel_delete
+   },
+   .eventHandler = HeaderOptionsPanel_eventHandler
+};
+
+HeaderOptionsPanel* HeaderOptionsPanel_new(Settings* settings, ScreenManager* scr) {
+   HeaderOptionsPanel* this = AllocThis(HeaderOptionsPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(HeaderOptionsFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(CheckItem), true, fuBar);
+
+   this->scr = scr;
+   this->settings = settings;
+
+   Panel_setHeader(super, "Header Layout");
+   for (int i = 0; i < LAST_HEADER_LAYOUT; i++) {
+      Panel_add(super, (Object*) CheckItem_newByVal(HeaderLayout_layouts[i].description, false));
+   }
+   CheckItem_set((CheckItem*)Panel_get(super, settings->hLayout), true);
+   return this;
+}

HeaderOptionsPanel.h

@@ -0,0 +1,26 @@
+#ifndef HEADER_HeaderOptionsPanel
+#define HEADER_HeaderOptionsPanel
+/*
+htop - ColorsPanel.h
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Panel.h"
+#include "ScreenManager.h"
+#include "Settings.h"
+
+
+typedef struct HeaderOptionsPanel_ {
+   Panel super;
+
+   ScreenManager* scr;
+   Settings* settings;
+} HeaderOptionsPanel;
+
+extern const PanelClass HeaderOptionsPanel_class;
+
+HeaderOptionsPanel* HeaderOptionsPanel_new(Settings* settings, ScreenManager* scr);
+
+#endif /* HEADER_HeaderOptionsPanel */

HostnameMeter.c

@@ -1,30 +1,28 @@
 /*
 htop - HostnameMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "HostnameMeter.h"
 
 #include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
 
-#include <unistd.h>
 
-/*{
-#include "Meter.h"
-}*/
-
-int HostnameMeter_attributes[] = {
+static const int HostnameMeter_attributes[] = {
    HOSTNAME
 };
 
-static void HostnameMeter_updateValues(Meter* this, char* buffer, int size) {
-   (void) this;
-   gethostname(buffer, size-1);
+static void HostnameMeter_updateValues(Meter* this) {
+   Platform_getHostname(this->txtBuffer, sizeof(this->txtBuffer));
 }
 
-MeterClass HostnameMeter_class = {
+const MeterClass HostnameMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete

HostnameMeter.h

@@ -1,18 +1,15 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_HostnameMeter
 #define HEADER_HostnameMeter
 /*
 htop - HostnameMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
-extern int HostnameMeter_attributes[];
 
-extern MeterClass HostnameMeter_class;
+extern const MeterClass HostnameMeter_class;
 
 #endif

INSTALL

@@ -1,370 +0,0 @@
-Installation Instructions
-*************************
-
-Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
-Inc.
-
-   Copying and distribution of this file, with or without modification,
-are permitted in any medium without royalty provided the copyright
-notice and this notice are preserved.  This file is offered as-is,
-without warranty of any kind.
-
-Basic Installation
-==================
-
-   Briefly, the shell command `./configure && make && make install'
-should configure, build, and install this package.  The following
-more-detailed instructions are generic; see the `README' file for
-instructions specific to this package.  Some packages provide this
-`INSTALL' file but do not implement all of the features documented
-below.  The lack of an optional feature in a given package is not
-necessarily a bug.  More recommendations for GNU packages can be found
-in *note Makefile Conventions: (standards)Makefile Conventions.
-
-   The `configure' shell script attempts to guess correct values for
-various system-dependent variables used during compilation.  It uses
-those values to create a `Makefile' in each directory of the package.
-It may also create one or more `.h' files containing system-dependent
-definitions.  Finally, it creates a shell script `config.status' that
-you can run in the future to recreate the current configuration, and a
-file `config.log' containing compiler output (useful mainly for
-debugging `configure').
-
-   It can also use an optional file (typically called `config.cache'
-and enabled with `--cache-file=config.cache' or simply `-C') that saves
-the results of its tests to speed up reconfiguring.  Caching is
-disabled by default to prevent problems with accidental use of stale
-cache files.
-
-   If you need to do unusual things to compile the package, please try
-to figure out how `configure' could check whether to do them, and mail
-diffs or instructions to the address given in the `README' so they can
-be considered for the next release.  If you are using the cache, and at
-some point `config.cache' contains results you don't want to keep, you
-may remove or edit it.
-
-   The file `configure.ac' (or `configure.in') is used to create
-`configure' by a program called `autoconf'.  You need `configure.ac' if
-you want to change it or regenerate `configure' using a newer version
-of `autoconf'.
-
-   The simplest way to compile this package is:
-
-  1. `cd' to the directory containing the package's source code and type
-     `./configure' to configure the package for your system.
-
-     Running `configure' might take a while.  While running, it prints
-     some messages telling which features it is checking for.
-
-  2. Type `make' to compile the package.
-
-  3. Optionally, type `make check' to run any self-tests that come with
-     the package, generally using the just-built uninstalled binaries.
-
-  4. Type `make install' to install the programs and any data files and
-     documentation.  When installing into a prefix owned by root, it is
-     recommended that the package be configured and built as a regular
-     user, and only the `make install' phase executed with root
-     privileges.
-
-  5. Optionally, type `make installcheck' to repeat any self-tests, but
-     this time using the binaries in their final installed location.
-     This target does not install anything.  Running this target as a
-     regular user, particularly if the prior `make install' required
-     root privileges, verifies that the installation completed
-     correctly.
-
-  6. You can remove the program binaries and object files from the
-     source code directory by typing `make clean'.  To also remove the
-     files that `configure' created (so you can compile the package for
-     a different kind of computer), type `make distclean'.  There is
-     also a `make maintainer-clean' target, but that is intended mainly
-     for the package's developers.  If you use it, you may have to get
-     all sorts of other programs in order to regenerate files that came
-     with the distribution.
-
-  7. Often, you can also type `make uninstall' to remove the installed
-     files again.  In practice, not all packages have tested that
-     uninstallation works correctly, even though it is required by the
-     GNU Coding Standards.
-
-  8. Some packages, particularly those that use Automake, provide `make
-     distcheck', which can by used by developers to test that all other
-     targets like `make install' and `make uninstall' work correctly.
-     This target is generally not run by end users.
-
-Compilers and Options
-=====================
-
-   Some systems require unusual options for compilation or linking that
-the `configure' script does not know about.  Run `./configure --help'
-for details on some of the pertinent environment variables.
-
-   You can give `configure' initial values for configuration parameters
-by setting variables in the command line or in the environment.  Here
-is an example:
-
-     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
-
-   *Note Defining Variables::, for more details.
-
-Compiling For Multiple Architectures
-====================================
-
-   You can compile the package for more than one kind of computer at the
-same time, by placing the object files for each architecture in their
-own directory.  To do this, you can use GNU `make'.  `cd' to the
-directory where you want the object files and executables to go and run
-the `configure' script.  `configure' automatically checks for the
-source code in the directory that `configure' is in and in `..'.  This
-is known as a "VPATH" build.
-
-   With a non-GNU `make', it is safer to compile the package for one
-architecture at a time in the source code directory.  After you have
-installed the package for one architecture, use `make distclean' before
-reconfiguring for another architecture.
-
-   On MacOS X 10.5 and later systems, you can create libraries and
-executables that work on multiple system types--known as "fat" or
-"universal" binaries--by specifying multiple `-arch' options to the
-compiler but only a single `-arch' option to the preprocessor.  Like
-this:
-
-     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
-                 CPP="gcc -E" CXXCPP="g++ -E"
-
-   This is not guaranteed to produce working output in all cases, you
-may have to build one architecture at a time and combine the results
-using the `lipo' tool if you have problems.
-
-Installation Names
-==================
-
-   By default, `make install' installs the package's commands under
-`/usr/local/bin', include files under `/usr/local/include', etc.  You
-can specify an installation prefix other than `/usr/local' by giving
-`configure' the option `--prefix=PREFIX', where PREFIX must be an
-absolute file name.
-
-   You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files.  If you
-pass the option `--exec-prefix=PREFIX' to `configure', the package uses
-PREFIX as the prefix for installing programs and libraries.
-Documentation and other data files still use the regular prefix.
-
-   In addition, if you use an unusual directory layout you can give
-options like `--bindir=DIR' to specify different values for particular
-kinds of files.  Run `configure --help' for a list of the directories
-you can set and what kinds of files go in them.  In general, the
-default for these options is expressed in terms of `${prefix}', so that
-specifying just `--prefix' will affect all of the other directory
-specifications that were not explicitly provided.
-
-   The most portable way to affect installation locations is to pass the
-correct locations to `configure'; however, many packages provide one or
-both of the following shortcuts of passing variable assignments to the
-`make install' command line to change installation locations without
-having to reconfigure or recompile.
-
-   The first method involves providing an override variable for each
-affected directory.  For example, `make install
-prefix=/alternate/directory' will choose an alternate location for all
-directory configuration variables that were expressed in terms of
-`${prefix}'.  Any directories that were specified during `configure',
-but not in terms of `${prefix}', must each be overridden at install
-time for the entire installation to be relocated.  The approach of
-makefile variable overrides for each directory variable is required by
-the GNU Coding Standards, and ideally causes no recompilation.
-However, some platforms have known limitations with the semantics of
-shared libraries that end up requiring recompilation when using this
-method, particularly noticeable in packages that use GNU Libtool.
-
-   The second method involves providing the `DESTDIR' variable.  For
-example, `make install DESTDIR=/alternate/directory' will prepend
-`/alternate/directory' before all installation names.  The approach of
-`DESTDIR' overrides is not required by the GNU Coding Standards, and
-does not work on platforms that have drive letters.  On the other hand,
-it does better at avoiding recompilation issues, and works well even
-when some directory options were not specified in terms of `${prefix}'
-at `configure' time.
-
-Optional Features
-=================
-
-   If the package supports it, you can cause programs to be installed
-with an extra prefix or suffix on their names by giving `configure' the
-option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
-
-   Some packages pay attention to `--enable-FEATURE' options to
-`configure', where FEATURE indicates an optional part of the package.
-They may also pay attention to `--with-PACKAGE' options, where PACKAGE
-is something like `gnu-as' or `x' (for the X Window System).  The
-`README' should mention any `--enable-' and `--with-' options that the
-package recognizes.
-
-   For packages that use the X Window System, `configure' can usually
-find the X include and library files automatically, but if it doesn't,
-you can use the `configure' options `--x-includes=DIR' and
-`--x-libraries=DIR' to specify their locations.
-
-   Some packages offer the ability to configure how verbose the
-execution of `make' will be.  For these packages, running `./configure
---enable-silent-rules' sets the default to minimal output, which can be
-overridden with `make V=1'; while running `./configure
---disable-silent-rules' sets the default to verbose, which can be
-overridden with `make V=0'.
-
-Particular systems
-==================
-
-   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
-CC is not installed, it is recommended to use the following options in
-order to use an ANSI C compiler:
-
-     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
-
-and if that doesn't work, install pre-built binaries of GCC for HP-UX.
-
-   HP-UX `make' updates targets which have the same time stamps as
-their prerequisites, which makes it generally unusable when shipped
-generated files such as `configure' are involved.  Use GNU `make'
-instead.
-
-   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
-parse its `<wchar.h>' header file.  The option `-nodtk' can be used as
-a workaround.  If GNU CC is not installed, it is therefore recommended
-to try
-
-     ./configure CC="cc"
-
-and if that doesn't work, try
-
-     ./configure CC="cc -nodtk"
-
-   On Solaris, don't put `/usr/ucb' early in your `PATH'.  This
-directory contains several dysfunctional programs; working variants of
-these programs are available in `/usr/bin'.  So, if you need `/usr/ucb'
-in your `PATH', put it _after_ `/usr/bin'.
-
-   On Haiku, software installed for all users goes in `/boot/common',
-not `/usr/local'.  It is recommended to use the following options:
-
-     ./configure --prefix=/boot/common
-
-Specifying the System Type
-==========================
-
-   There may be some features `configure' cannot figure out
-automatically, but needs to determine by the type of machine the package
-will run on.  Usually, assuming the package is built to be run on the
-_same_ architectures, `configure' can figure that out, but if it prints
-a message saying it cannot guess the machine type, give it the
-`--build=TYPE' option.  TYPE can either be a short name for the system
-type, such as `sun4', or a canonical name which has the form:
-
-     CPU-COMPANY-SYSTEM
-
-where SYSTEM can have one of these forms:
-
-     OS
-     KERNEL-OS
-
-   See the file `config.sub' for the possible values of each field.  If
-`config.sub' isn't included in this package, then this package doesn't
-need to know the machine type.
-
-   If you are _building_ compiler tools for cross-compiling, you should
-use the option `--target=TYPE' to select the type of system they will
-produce code for.
-
-   If you want to _use_ a cross compiler, that generates code for a
-platform different from the build platform, you should specify the
-"host" platform (i.e., that on which the generated programs will
-eventually be run) with `--host=TYPE'.
-
-Sharing Defaults
-================
-
-   If you want to set default values for `configure' scripts to share,
-you can create a site shell script called `config.site' that gives
-default values for variables like `CC', `cache_file', and `prefix'.
-`configure' looks for `PREFIX/share/config.site' if it exists, then
-`PREFIX/etc/config.site' if it exists.  Or, you can set the
-`CONFIG_SITE' environment variable to the location of the site script.
-A warning: not all `configure' scripts look for a site script.
-
-Defining Variables
-==================
-
-   Variables not defined in a site shell script can be set in the
-environment passed to `configure'.  However, some packages may run
-configure again during the build, and the customized values of these
-variables may be lost.  In order to avoid this problem, you should set
-them in the `configure' command line, using `VAR=value'.  For example:
-
-     ./configure CC=/usr/local2/bin/gcc
-
-causes the specified `gcc' to be used as the C compiler (unless it is
-overridden in the site shell script).
-
-Unfortunately, this technique does not work for `CONFIG_SHELL' due to
-an Autoconf limitation.  Until the limitation is lifted, you can use
-this workaround:
-
-     CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash
-
-`configure' Invocation
-======================
-
-   `configure' recognizes the following options to control how it
-operates.
-
-`--help'
-`-h'
-     Print a summary of all of the options to `configure', and exit.
-
-`--help=short'
-`--help=recursive'
-     Print a summary of the options unique to this package's
-     `configure', and exit.  The `short' variant lists options used
-     only in the top level, while the `recursive' variant lists options
-     also present in any nested packages.
-
-`--version'
-`-V'
-     Print the version of Autoconf used to generate the `configure'
-     script, and exit.
-
-`--cache-file=FILE'
-     Enable the cache: use and save the results of the tests in FILE,
-     traditionally `config.cache'.  FILE defaults to `/dev/null' to
-     disable caching.
-
-`--config-cache'
-`-C'
-     Alias for `--cache-file=config.cache'.
-
-`--quiet'
-`--silent'
-`-q'
-     Do not print messages saying which checks are being made.  To
-     suppress all normal output, redirect it to `/dev/null' (any error
-     messages will still be shown).
-
-`--srcdir=DIR'
-     Look for the package's source code in directory DIR.  Usually
-     `configure' can determine that directory automatically.
-
-`--prefix=DIR'
-     Use DIR as the installation prefix.  *note Installation Names::
-     for more details, including other options available for fine-tuning
-     the installation locations.
-
-`--no-create'
-`-n'
-     Run the configure checks, but stop before creating any output
-     files.
-
-`configure' also accepts some other, not widely useful, options.  Run
-`configure --help' for more details.

IncSet.c

@@ -1,60 +1,44 @@
 /*
 htop - IncSet.c
 (C) 2005-2012 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "IncSet.h"
-#include "StringUtils.h"
-#include "Panel.h"
-#include "ListItem.h"
-#include "CRT.h"
+
+#include <ctype.h>
 #include <string.h>
 #include <stdlib.h>
 
-/*{
+#include "CRT.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-#include "FunctionBar.h"
-#include "Panel.h"
-#include <stdbool.h>
-
-#define INCMODE_MAX 40
-
-typedef enum {
-   INC_SEARCH = 0,
-   INC_FILTER = 1
-} IncType;
-
-#define IncSet_filter(inc_) (inc_->filtering ? inc_->modes[INC_FILTER].buffer : NULL)
-
-typedef struct IncMode_ {
-   char buffer[INCMODE_MAX+1];
-   int index;
-   FunctionBar* bar;
-   bool isFilter;
-} IncMode;
-
-typedef struct IncSet_ {
-   IncMode modes[2];
-   IncMode* active;
-   FunctionBar* defaultBar;
-   bool filtering;
-   bool found;
-} IncSet;
-
-typedef const char* (*IncMode_GetPanelValue)(Panel*, int);
-
-}*/
 
 static void IncMode_reset(IncMode* mode) {
    mode->index = 0;
    mode->buffer[0] = 0;
 }
 
-static const char* const searchFunctions[] = {"Next  ", "Cancel ", " Search: ", NULL};
-static const char* const searchKeys[] = {"F3", "Esc", "  "};
-static int searchEvents[] = {KEY_F(3), 27, ERR};
+void IncSet_reset(IncSet* this, IncType type) {
+   IncMode_reset(&this->modes[type]);
+}
+
+void IncSet_setFilter(IncSet* this, const char* filter) {
+   IncMode* mode = &this->modes[INC_FILTER];
+   size_t len = String_safeStrncpy(mode->buffer, filter, sizeof(mode->buffer));
+   mode->index = len;
+   this->filtering = true;
+}
+
+static const char* const searchFunctions[] = {"Next  ", "Prev   ", "Cancel ", " Search: ", NULL};
+static const char* const searchKeys[] = {"F3", "S-F3", "Esc", "  "};
+static const int searchEvents[] = {KEY_F(3), KEY_F(15), 27, ERR};
 
 static inline void IncMode_initSearch(IncMode* search) {
    memset(search, 0, sizeof(IncMode));
@@ -64,7 +48,7 @@ static inline void IncMode_initSearch(IncMode* search) {
 
 static const char* const filterFunctions[] = {"Done  ", "Clear ", " Filter: ", NULL};
 static const char* const filterKeys[] = {"Enter", "Esc", "  "};
-static int filterEvents[] = {13, 27, ERR};
+static const int filterEvents[] = {13, 27, ERR};
 
 static inline void IncMode_initFilter(IncMode* filter) {
    memset(filter, 0, sizeof(IncMode));
@@ -77,12 +61,13 @@ static inline void IncMode_done(IncMode* mode) {
 }
 
 IncSet* IncSet_new(FunctionBar* bar) {
-   IncSet* this = xCalloc(1, sizeof(IncSet));
+   IncSet* this = xMalloc(sizeof(IncSet));
    IncMode_initSearch(&(this->modes[INC_SEARCH]));
    IncMode_initFilter(&(this->modes[INC_FILTER]));
    this->active = NULL;
-   this->filtering = false;
    this->defaultBar = bar;
+   this->filtering = false;
+   this->found = false;
    return this;
 }
 
@@ -92,8 +77,8 @@ void IncSet_delete(IncSet* this) {
    free(this);
 }
 
-static void updateWeakPanel(IncSet* this, Panel* panel, Vector* lines) {
-   Object* selected = Panel_getSelected(panel);
+static void updateWeakPanel(const IncSet* this, Panel* panel, Vector* lines) {
+   const Object* selected = Panel_getSelected(panel);
    Panel_prune(panel);
    if (this->filtering) {
       int n = 0;
@@ -102,7 +87,10 @@ static void updateWeakPanel(IncSet* this, Panel* panel, Vector* lines) {
          ListItem* line = (ListItem*)Vector_get(lines, i);
          if (String_contains_i(line->value, incFilter)) {
             Panel_add(panel, (Object*)line);
-            if (selected == (Object*)line) Panel_setSelected(panel, n);
+            if (selected == (Object*)line) {
+               Panel_setSelected(panel, n);
+            }
+
             n++;
          }
       }
@@ -110,60 +98,75 @@ static void updateWeakPanel(IncSet* this, Panel* panel, Vector* lines) {
       for (int i = 0; i < Vector_size(lines); i++) {
          Object* line = Vector_get(lines, i);
          Panel_add(panel, line);
-         if (selected == line) Panel_setSelected(panel, i);
+         if (selected == line) {
+            Panel_setSelected(panel, i);
+         }
       }
    }
 }
 
-static bool search(IncMode* mode, Panel* panel, IncMode_GetPanelValue getPanelValue) {
+static bool search(const IncMode* mode, Panel* panel, IncMode_GetPanelValue getPanelValue) {
    int size = Panel_size(panel);
-   bool found = false;
    for (int i = 0; i < size; i++) {
       if (String_contains_i(getPanelValue(panel, i), mode->buffer)) {
          Panel_setSelected(panel, i);
-         found = true;
-         break;
+         return true;
+      }
+   }
+
+   return false;
+}
+
+static bool IncMode_find(const IncMode* mode, Panel* panel, IncMode_GetPanelValue getPanelValue, int step) {
+   int size = Panel_size(panel);
+   int here = Panel_getSelectedIndex(panel);
+   int i = here;
+   for (;;) {
+      i += step;
+      if (i == size) {
+         i = 0;
+      }
+      if (i == -1) {
+         i = size - 1;
+      }
+      if (i == here) {
+         return false;
+      }
+
+      if (String_contains_i(getPanelValue(panel, i), mode->buffer)) {
+         Panel_setSelected(panel, i);
+         return true;
       }
    }
-   if (found)
-      FunctionBar_draw(mode->bar, mode->buffer);
-   else
-      FunctionBar_drawAttr(mode->bar, mode->buffer, CRT_colors[FAILED_SEARCH]);
-   return found;
 }
 
 bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue getPanelValue, Vector* lines) {
    if (ch == ERR)
       return true;
+
    IncMode* mode = this->active;
    int size = Panel_size(panel);
    bool filterChanged = false;
    bool doSearch = true;
-   if (ch == KEY_F(3)) {
-      if (size == 0) return true;
-      int here = Panel_getSelectedIndex(panel);
-      int i = here;
-      for(;;) {
-         i++;
-         if (i == size) i = 0;
-         if (i == here) break;
-         if (String_contains_i(getPanelValue(panel, i), mode->buffer)) {
-            Panel_setSelected(panel, i);
-            break;
-         }
-      }
+   if (ch == KEY_F(3) || ch == KEY_F(15)) {
+      if (size == 0)
+         return true;
+
+      IncMode_find(mode, panel, getPanelValue, ch == KEY_F(3) ? 1 : -1);
       doSearch = false;
-   } else if (ch < 255 && isprint((char)ch)) {
+   } else if (0 < ch && ch < 255 && isprint((unsigned char)ch)) {
       if (mode->index < INCMODE_MAX) {
          mode->buffer[mode->index] = ch;
          mode->index++;
          mode->buffer[mode->index] = 0;
          if (mode->isFilter) {
             filterChanged = true;
-            if (mode->index == 1) this->filtering = true;
+            if (mode->index == 1) {
+               this->filtering = true;
+            }
          }
       }
-   } else if ((ch == KEY_BACKSPACE || ch == 127)) {
+   } else if (ch == KEY_BACKSPACE || ch == 127) {
       if (mode->index > 0) {
          mode->index--;
          mode->buffer[mode->index] = 0;
@@ -178,7 +181,7 @@ bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue
          doSearch = false;
       }
    } else if (ch == KEY_RESIZE) {
-     Panel_resize(panel, COLS, LINES-panel->y-1);
+      doSearch = (mode->index > 0);
    } else {
       if (mode->isFilter) {
          filterChanged = true;
@@ -187,11 +190,12 @@ bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue
             IncMode_reset(mode);
          }
       } else {
-         IncMode_reset(mode);
+         if (ch == 27) {
+            IncMode_reset(mode);
+         }
       }
       this->active = NULL;
       Panel_setDefaultBar(panel);
-      FunctionBar_draw(this->defaultBar, NULL);
       doSearch = false;
    }
    if (doSearch) {
@@ -204,23 +208,20 @@ bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue
 }
 
 const char* IncSet_getListItemValue(Panel* panel, int i) {
-   ListItem* l = (ListItem*) Panel_get(panel, i);
-   if (l)
-      return l->value;
-   return "";
+   const ListItem* l = (const ListItem*) Panel_get(panel, i);
+   return l ? l->value : "";
 }
 
 void IncSet_activate(IncSet* this, IncType type, Panel* panel) {
    this->active = &(this->modes[type]);
-   FunctionBar_draw(this->active->bar, this->active->buffer);
    panel->currentBar = this->active->bar;
 }
 
-void IncSet_drawBar(IncSet* this) {
+void IncSet_drawBar(const IncSet* this) {
    if (this->active) {
-      FunctionBar_draw(this->active->bar, this->active->buffer);
+      FunctionBar_drawExtra(this->active->bar, this->active->buffer, (this->active->isFilter || this->found) ? -1 : CRT_colors[FAILED_SEARCH], true);
    } else {
-      FunctionBar_draw(this->defaultBar, NULL);
+      FunctionBar_draw(this->defaultBar);
    }
 }
 

IncSet.h

@@ -1,18 +1,19 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_IncSet
 #define HEADER_IncSet
 /*
 htop - IncSet.h
 (C) 2005-2012 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+#include <stddef.h>
 
 #include "FunctionBar.h"
 #include "Panel.h"
-#include <stdbool.h>
+#include "Vector.h"
+
 
 #define INCMODE_MAX 40
 
@@ -21,10 +22,8 @@ typedef enum {
    INC_FILTER = 1
 } IncType;
 
-#define IncSet_filter(inc_) (inc_->filtering ? inc_->modes[INC_FILTER].buffer : NULL)
-
 typedef struct IncMode_ {
-   char buffer[INCMODE_MAX+1];
+   char buffer[INCMODE_MAX + 1];
    int index;
    FunctionBar* bar;
    bool isFilter;
@@ -38,8 +37,15 @@ typedef struct IncSet_ {
    bool found;
 } IncSet;
 
+static inline const char* IncSet_filter(const IncSet* this) {
+   return this->filtering ? this->modes[INC_FILTER].buffer : NULL;
+}
+
+void IncSet_setFilter(IncSet* this, const char* filter);
+
 typedef const char* (*IncMode_GetPanelValue)(Panel*, int);
 
+void IncSet_reset(IncSet* this, IncType type);
 
 IncSet* IncSet_new(FunctionBar* bar);
 
@@ -51,7 +57,7 @@ const char* IncSet_getListItemValue(Panel* panel, int i);
 
 void IncSet_activate(IncSet* this, IncType type, Panel* panel);
 
-void IncSet_drawBar(IncSet* this);
+void IncSet_drawBar(const IncSet* this);
 
 int IncSet_synthesizeEvent(IncSet* this, int x);
 

InfoScreen.c

@@ -1,69 +1,33 @@
+#include "config.h" // IWYU pragma: keep
+
 #include "InfoScreen.h"
 
-#include "config.h"
-#include "Object.h"
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
 #include "CRT.h"
 #include "IncSet.h"
 #include "ListItem.h"
-#include "Platform.h"
-#include "StringUtils.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <stdarg.h>
-
-/*{
-#include "Process.h"
-#include "Panel.h"
-#include "FunctionBar.h"
-#include "IncSet.h"
-
-typedef struct InfoScreen_ InfoScreen;
-
-typedef void(*InfoScreen_Scan)(InfoScreen*);
-typedef void(*InfoScreen_Draw)(InfoScreen*);
-typedef void(*InfoScreen_OnErr)(InfoScreen*);
-typedef bool(*InfoScreen_OnKey)(InfoScreen*, int);
-
-typedef struct InfoScreenClass_ {
-   ObjectClass super;
-   const InfoScreen_Scan scan;
-   const InfoScreen_Draw draw;
-   const InfoScreen_OnErr onErr;
-   const InfoScreen_OnKey onKey;
-} InfoScreenClass;
-
-#define As_InfoScreen(this_)          ((InfoScreenClass*)(((InfoScreen*)(this_))->super.klass))
-#define InfoScreen_scan(this_)        As_InfoScreen(this_)->scan((InfoScreen*)(this_))
-#define InfoScreen_draw(this_)        As_InfoScreen(this_)->draw((InfoScreen*)(this_))
-#define InfoScreen_onErr(this_)       As_InfoScreen(this_)->onErr((InfoScreen*)(this_))
-#define InfoScreen_onKey(this_, ch_)  As_InfoScreen(this_)->onKey((InfoScreen*)(this_), ch_)
-
-struct InfoScreen_ {
-   Object super;
-   Process* process;
-   Panel* display;
-   FunctionBar* bar;
-   IncSet* inc;
-   Vector* lines;
-};
-}*/
 
 static const char* const InfoScreenFunctions[] = {"Search ", "Filter ", "Refresh", "Done   ", NULL};
 
 static const char* const InfoScreenKeys[] = {"F3", "F4", "F5", "Esc"};
 
-static int InfoScreenEvents[] = {KEY_F(3), KEY_F(4), KEY_F(5), 27};
+static const int InfoScreenEvents[] = {KEY_F(3), KEY_F(4), KEY_F(5), 27};
 
-InfoScreen* InfoScreen_init(InfoScreen* this, Process* process, FunctionBar* bar, int height, char* panelHeader) {
+InfoScreen* InfoScreen_init(InfoScreen* this, const Process* process, FunctionBar* bar, int height, const char* panelHeader) {
    this->process = process;
    if (!bar) {
       bar = FunctionBar_new(InfoScreenFunctions, InfoScreenKeys, InfoScreenEvents);
    }
-   this->display = Panel_new(0, 1, COLS, height, false, Class(ListItem), bar);
+   this->display = Panel_new(0, 1, COLS, height, Class(ListItem), false, bar);
    this->inc = IncSet_new(bar);
-   this->lines = Vector_new(this->display->items->type, true, DEFAULT_SIZE);
+   this->lines = Vector_new(Vector_type(this->display->items), true, DEFAULT_SIZE);
    Panel_setHeader(this->display, panelHeader);
    return this;
 }
@@ -75,51 +39,66 @@ InfoScreen* InfoScreen_done(InfoScreen* this) {
    return this;
 }
 
-void InfoScreen_drawTitled(InfoScreen* this, char* fmt, ...) {
+void InfoScreen_drawTitled(InfoScreen* this, const char* fmt, ...) {
    va_list ap;
    va_start(ap, fmt);
+
+   char title[COLS + 1];
+   int len = vsnprintf(title, sizeof(title), fmt, ap);
+   va_end(ap);
+
+   if (len > COLS) {
+      memset(&title[COLS - 3], '.', 3);
+   }
+
    attrset(CRT_colors[METER_TEXT]);
    mvhline(0, 0, ' ', COLS);
-   wmove(stdscr, 0, 0);
-   vw_printw(stdscr, fmt, ap);
+   mvaddstr(0, 0, title);
    attrset(CRT_colors[DEFAULT_COLOR]);
-   this->display->needsRedraw = true;
-   Panel_draw(this->display, true);
+   Panel_draw(this->display, true, true, true, false);
+
    IncSet_drawBar(this->inc);
-   va_end(ap);
 }
 
 void InfoScreen_addLine(InfoScreen* this, const char* line) {
    Vector_add(this->lines, (Object*) ListItem_new(line, 0));
    const char* incFilter = IncSet_filter(this->inc);
-   if (!incFilter || String_contains_i(line, incFilter))
-      Panel_add(this->display, (Object*)Vector_get(this->lines, Vector_size(this->lines)-1));
+   if (!incFilter || String_contains_i(line, incFilter)) {
+      Panel_add(this->display, Vector_get(this->lines, Vector_size(this->lines) - 1));
+   }
 }
 
 void InfoScreen_appendLine(InfoScreen* this, const char* line) {
-   ListItem* last = (ListItem*)Vector_get(this->lines, Vector_size(this->lines)-1);
+   ListItem* last = (ListItem*)Vector_get(this->lines, Vector_size(this->lines) - 1);
    ListItem_append(last, line);
    const char* incFilter = IncSet_filter(this->inc);
-   if (incFilter && Panel_get(this->display, Panel_size(this->display)-1) != (Object*)last && String_contains_i(line, incFilter))
+   if (incFilter && Panel_get(this->display, Panel_size(this->display) - 1) != (Object*)last && String_contains_i(line, incFilter)) {
       Panel_add(this->display, (Object*)last);
+   }
 }
 
 void InfoScreen_run(InfoScreen* this) {
    Panel* panel = this->display;
 
-   if (As_InfoScreen(this)->scan) InfoScreen_scan(this);
+   if (As_InfoScreen(this)->scan)
+      InfoScreen_scan(this);
+
    InfoScreen_draw(this);
 
    bool looping = true;
    while (looping) {
 
-      Panel_draw(panel, true);
+      Panel_draw(panel, false, true, true, false);
+      IncSet_drawBar(this->inc);
 
-      if (this->inc->active)
-         move(LINES-1, CRT_cursorX);
+      if (this->inc->active) {
+         (void) move(LINES - 1, CRT_cursorX);
+      }
+#ifdef HAVE_SET_ESCDELAY
       set_escdelay(25);
+#endif
       int ch = getch();
-      
+
       if (ch == ERR) {
          if (As_InfoScreen(this)->onErr) {
             InfoScreen_onErr(this);
@@ -127,22 +106,35 @@ void InfoScreen_run(InfoScreen* this) {
          }
       }
 
+#ifdef HAVE_GETMOUSE
       if (ch == KEY_MOUSE) {
          MEVENT mevent;
          int ok = getmouse(&mevent);
-         if (ok == OK)
-            if (mevent.y >= panel->y && mevent.y < LINES - 1) {
-               Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV);
-               ch = 0;
-            } if (mevent.y == LINES - 1)
-               ch = IncSet_synthesizeEvent(this->inc, mevent.x);
+         if (ok == OK) {
+            if (mevent.bstate & BUTTON1_RELEASED) {
+               if (mevent.y >= panel->y && mevent.y < LINES - 1) {
+                  Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1);
+                  ch = 0;
+               } else if (mevent.y == LINES - 1) {
+                  ch = IncSet_synthesizeEvent(this->inc, mevent.x);
+               }
+            }
+            #if NCURSES_MOUSE_VERSION > 1
+            else if (mevent.bstate & BUTTON4_PRESSED) {
+               ch = KEY_WHEELUP;
+            } else if (mevent.bstate & BUTTON5_PRESSED) {
+               ch = KEY_WHEELDOWN;
+            }
+            #endif
+         }
       }
+#endif
 
       if (this->inc->active) {
          IncSet_handleKey(this->inc, ch, panel, IncSet_getListItemValue, this->lines);
          continue;
       }
-      
+
       switch(ch) {
       case ERR:
          continue;
@@ -156,20 +148,29 @@ void InfoScreen_run(InfoScreen* this) {
          break;
       case KEY_F(5):
          clear();
-         if (As_InfoScreen(this)->scan) InfoScreen_scan(this);
+         if (As_InfoScreen(this)->scan) {
+            Vector_prune(this->lines);
+            InfoScreen_scan(this);
+         }
+
          InfoScreen_draw(this);
          break;
       case '\014': // Ctrl+L
          clear();
          InfoScreen_draw(this);
          break;
-      case 'q':
       case 27:
+      case 'q':
       case KEY_F(10):
          looping = false;
          break;
       case KEY_RESIZE:
-         Panel_resize(panel, COLS, LINES-2);
+         Panel_resize(panel, COLS, LINES - 2);
+         if (As_InfoScreen(this)->scan) {
+            Vector_prune(this->lines);
+            InfoScreen_scan(this);
+         }
+
          InfoScreen_draw(this);
          break;
       default:

InfoScreen.h

@@ -1,14 +1,24 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_InfoScreen
 #define HEADER_InfoScreen
 
-#include "Process.h"
-#include "Panel.h"
+#include <stdbool.h>
+
 #include "FunctionBar.h"
 #include "IncSet.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Panel.h"
+#include "Process.h"
+#include "Vector.h"
 
-typedef struct InfoScreen_ InfoScreen;
+
+typedef struct InfoScreen_ {
+   Object super;
+   const Process* process;
+   Panel* display;
+   IncSet* inc;
+   Vector* lines;
+} InfoScreen;
 
 typedef void(*InfoScreen_Scan)(InfoScreen*);
 typedef void(*InfoScreen_Draw)(InfoScreen*);
@@ -16,33 +26,25 @@ typedef void(*InfoScreen_OnErr)(InfoScreen*);
 typedef bool(*InfoScreen_OnKey)(InfoScreen*, int);
 
 typedef struct InfoScreenClass_ {
-   ObjectClass super;
+   const ObjectClass super;
    const InfoScreen_Scan scan;
    const InfoScreen_Draw draw;
    const InfoScreen_OnErr onErr;
    const InfoScreen_OnKey onKey;
 } InfoScreenClass;
 
-#define As_InfoScreen(this_)          ((InfoScreenClass*)(((InfoScreen*)(this_))->super.klass))
+#define As_InfoScreen(this_)          ((const InfoScreenClass*)(((InfoScreen*)(this_))->super.klass))
 #define InfoScreen_scan(this_)        As_InfoScreen(this_)->scan((InfoScreen*)(this_))
 #define InfoScreen_draw(this_)        As_InfoScreen(this_)->draw((InfoScreen*)(this_))
 #define InfoScreen_onErr(this_)       As_InfoScreen(this_)->onErr((InfoScreen*)(this_))
 #define InfoScreen_onKey(this_, ch_)  As_InfoScreen(this_)->onKey((InfoScreen*)(this_), ch_)
 
-struct InfoScreen_ {
-   Object super;
-   Process* process;
-   Panel* display;
-   FunctionBar* bar;
-   IncSet* inc;
-   Vector* lines;
-};
-
-InfoScreen* InfoScreen_init(InfoScreen* this, Process* process, FunctionBar* bar, int height, char* panelHeader);
+InfoScreen* InfoScreen_init(InfoScreen* this, const Process* process, FunctionBar* bar, int height, const char* panelHeader);
 
 InfoScreen* InfoScreen_done(InfoScreen* this);
 
-void InfoScreen_drawTitled(InfoScreen* this, char* fmt, ...);
+ATTR_FORMAT(printf, 2, 3)
+void InfoScreen_drawTitled(InfoScreen* this, const char* fmt, ...);
 
 void InfoScreen_addLine(InfoScreen* this, const char* line);
 

ListItem.c

@@ -1,31 +1,22 @@
 /*
 htop - ListItem.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "ListItem.h"
 
-#include "CRT.h"
-#include "StringUtils.h"
-#include "RichString.h"
-
-#include <string.h>
 #include <assert.h>
 #include <stdlib.h>
+#include <string.h>
 
-/*{
-#include "Object.h"
+#include "CRT.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-typedef struct ListItem_ {
-   Object super;
-   char* value;
-   int key;
-   bool moving;
-} ListItem;
-
-}*/
 
 static void ListItem_delete(Object* cast) {
    ListItem* this = (ListItem*)cast;
@@ -33,31 +24,19 @@ static void ListItem_delete(Object* cast) {
    free(this);
 }
 
-static void ListItem_display(Object* cast, RichString* out) {
-   ListItem* const this = (ListItem*)cast;
+static void ListItem_display(const Object* cast, RichString* out) {
+   const ListItem* const this = (const ListItem*)cast;
    assert (this != NULL);
-   /*
-   int len = strlen(this->value)+1;
-   char buffer[len+1];
-   xSnprintf(buffer, len, "%s", this->value);
-   */
-   if (this->moving) {
-      RichString_write(out, CRT_colors[DEFAULT_COLOR],
-#ifdef HAVE_LIBNCURSESW
-            CRT_utf8 ? "↕ " :
-#endif
-            "+ ");
-   } else {
-      RichString_prune(out);
-   }
-   RichString_append(out, CRT_colors[DEFAULT_COLOR], this->value/*buffer*/);
-}
 
-ObjectClass ListItem_class = {
-   .display = ListItem_display,
-   .delete = ListItem_delete,
-   .compare = ListItem_compare
-};
+   if (this->moving) {
+      RichString_writeWide(out, CRT_colors[DEFAULT_COLOR],
+#ifdef HAVE_LIBNCURSESW
+                           CRT_utf8 ? "↕ " :
+#endif
+                           "+ ");
+   }
+   RichString_appendWide(out, CRT_colors[DEFAULT_COLOR], this->value);
+}
 
 ListItem* ListItem_new(const char* value, int key) {
    ListItem* this = AllocThis(ListItem);
@@ -68,21 +47,22 @@ ListItem* ListItem_new(const char* value, int key) {
 }
 
 void ListItem_append(ListItem* this, const char* text) {
-   int oldLen = strlen(this->value);
-   int textLen = strlen(text);
-   int newLen = strlen(this->value) + textLen;
+   size_t oldLen = strlen(this->value);
+   size_t textLen = strlen(text);
+   size_t newLen = oldLen + textLen;
    this->value = xRealloc(this->value, newLen + 1);
    memcpy(this->value + oldLen, text, textLen);
    this->value[newLen] = '\0';
 }
 
-const char* ListItem_getRef(ListItem* this) {
-   return this->value;
-}
-
-long ListItem_compare(const void* cast1, const void* cast2) {
-   ListItem* obj1 = (ListItem*) cast1;
-   ListItem* obj2 = (ListItem*) cast2;
+static int ListItem_compare(const void* cast1, const void* cast2) {
+   const ListItem* obj1 = (const ListItem*) cast1;
+   const ListItem* obj2 = (const ListItem*) cast2;
    return strcmp(obj1->value, obj2->value);
 }
 
+const ObjectClass ListItem_class = {
+   .display = ListItem_display,
+   .delete = ListItem_delete,
+   .compare = ListItem_compare
+};

ListItem.h

@@ -1,16 +1,17 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ListItem
 #define HEADER_ListItem
 /*
 htop - ListItem.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+
 #include "Object.h"
 
+
 typedef struct ListItem_ {
    Object super;
    char* value;
@@ -18,16 +19,14 @@ typedef struct ListItem_ {
    bool moving;
 } ListItem;
 
-
-extern ObjectClass ListItem_class;
+extern const ObjectClass ListItem_class;
 
 ListItem* ListItem_new(const char* value, int key);
 
 void ListItem_append(ListItem* this, const char* text);
 
-const char* ListItem_getRef(ListItem* this);
-
-long ListItem_compare(const void* cast1, const void* cast2);
-
+static inline const char* ListItem_getRef(const ListItem* this) {
+   return this->value;
+}
 
 #endif

LoadAverageMeter.c

@@ -1,58 +1,105 @@
 /*
 htop - LoadAverageMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "LoadAverageMeter.h"
 
 #include "CRT.h"
+#include "Object.h"
 #include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-/*{
-#include "Meter.h"
-}*/
 
-int LoadAverageMeter_attributes[] = {
-   LOAD_AVERAGE_ONE, LOAD_AVERAGE_FIVE, LOAD_AVERAGE_FIFTEEN
+static const int LoadAverageMeter_attributes[] = {
+   LOAD_AVERAGE_ONE,
+   LOAD_AVERAGE_FIVE,
+   LOAD_AVERAGE_FIFTEEN
 };
 
-int LoadMeter_attributes[] = { LOAD };
+static const int LoadMeter_attributes[] = {
+   LOAD
+};
 
-static void LoadAverageMeter_updateValues(Meter* this, char* buffer, int size) {
+static const int OK_attributes[] = {
+   METER_VALUE_OK
+};
+
+static const int Medium_attributes[] = {
+   METER_VALUE_WARN
+};
+
+static const int High_attributes[] = {
+   METER_VALUE_ERROR
+};
+
+static void LoadAverageMeter_updateValues(Meter* this) {
    Platform_getLoadAverage(&this->values[0], &this->values[1], &this->values[2]);
-   xSnprintf(buffer, size, "%.2f/%.2f/%.2f", this->values[0], this->values[1], this->values[2]);
+
+   // only show bar for 1min value
+   this->curItems = 1;
+
+   // change bar color and total based on value
+   if (this->values[0] < 1.0) {
+      this->curAttributes = OK_attributes;
+      this->total = 1.0;
+   } else if (this->values[0] < this->pl->activeCPUs) {
+      this->curAttributes = Medium_attributes;
+      this->total = this->pl->activeCPUs;
+   } else {
+      this->curAttributes = High_attributes;
+      this->total = 2 * this->pl->activeCPUs;
+   }
+
+   xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "%.2f/%.2f/%.2f", this->values[0], this->values[1], this->values[2]);
 }
 
-static void LoadAverageMeter_display(Object* cast, RichString* out) {
-   Meter* this = (Meter*)cast;
+static void LoadAverageMeter_display(const Object* cast, RichString* out) {
+   const Meter* this = (const Meter*)cast;
    char buffer[20];
-   xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[0]);
-   RichString_write(out, CRT_colors[LOAD_AVERAGE_ONE], buffer);
-   xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[1]);
-   RichString_append(out, CRT_colors[LOAD_AVERAGE_FIVE], buffer);
-   xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[2]);
-   RichString_append(out, CRT_colors[LOAD_AVERAGE_FIFTEEN], buffer);
+   int len;
+
+   len = xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[0]);
+   RichString_appendnAscii(out, CRT_colors[LOAD_AVERAGE_ONE], buffer, len);
+   len = xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[1]);
+   RichString_appendnAscii(out, CRT_colors[LOAD_AVERAGE_FIVE], buffer, len);
+   len = xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[2]);
+   RichString_appendnAscii(out, CRT_colors[LOAD_AVERAGE_FIFTEEN], buffer, len);
 }
 
-static void LoadMeter_updateValues(Meter* this, char* buffer, int size) {
+static void LoadMeter_updateValues(Meter* this) {
    double five, fifteen;
    Platform_getLoadAverage(&this->values[0], &five, &fifteen);
-   if (this->values[0] > this->total) {
-      this->total = this->values[0];
+
+   // change bar color and total based on value
+   if (this->values[0] < 1.0) {
+      this->curAttributes = OK_attributes;
+      this->total = 1.0;
+   } else if (this->values[0] < this->pl->activeCPUs) {
+      this->curAttributes = Medium_attributes;
+      this->total = this->pl->activeCPUs;
+   } else {
+      this->curAttributes = High_attributes;
+      this->total = 2 * this->pl->activeCPUs;
    }
-   xSnprintf(buffer, size, "%.2f", this->values[0]);
+
+   xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "%.2f", this->values[0]);
 }
 
-static void LoadMeter_display(Object* cast, RichString* out) {
-   Meter* this = (Meter*)cast;
+static void LoadMeter_display(const Object* cast, RichString* out) {
+   const Meter* this = (const Meter*)cast;
    char buffer[20];
-   xSnprintf(buffer, sizeof(buffer), "%.2f ", ((Meter*)this)->values[0]);
-   RichString_write(out, CRT_colors[LOAD], buffer);
+   int len;
+
+   len = xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[0]);
+   RichString_appendnAscii(out, CRT_colors[LOAD], buffer, len);
 }
 
-MeterClass LoadAverageMeter_class = {
+const MeterClass LoadAverageMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
@@ -69,7 +116,7 @@ MeterClass LoadAverageMeter_class = {
    .caption = "Load average: "
 };
 
-MeterClass LoadMeter_class = {
+const MeterClass LoadMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,

LoadAverageMeter.h

@@ -1,22 +1,17 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_LoadAverageMeter
 #define HEADER_LoadAverageMeter
 /*
 htop - LoadAverageMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
-extern int LoadAverageMeter_attributes[];
 
-extern int LoadMeter_attributes[];
+extern const MeterClass LoadAverageMeter_class;
 
-extern MeterClass LoadAverageMeter_class;
-
-extern MeterClass LoadMeter_class;
+extern const MeterClass LoadMeter_class;
 
 #endif

Macros.h

@@ -0,0 +1,85 @@
+#ifndef HEADER_Macros
+#define HEADER_Macros
+
+#include <assert.h> // IWYU pragma: keep
+
+#ifndef MINIMUM
+#define MINIMUM(a, b)                  ((a) < (b) ? (a) : (b))
+#endif
+
+#ifndef MAXIMUM
+#define MAXIMUM(a, b)                  ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef CLAMP
+#define CLAMP(x, low, high)            (assert((low) <= (high)), ((x) > (high)) ? (high) : MAXIMUM(x, low))
+#endif
+
+#ifndef ARRAYSIZE
+#define ARRAYSIZE(x)                   (sizeof(x) / sizeof((x)[0]))
+#endif
+
+#ifndef SPACESHIP_NUMBER
+#define SPACESHIP_NUMBER(a, b)         (((a) > (b)) - ((a) < (b)))
+#endif
+
+#ifndef SPACESHIP_NULLSTR
+#define SPACESHIP_NULLSTR(a, b)        strcmp((a) ? (a) : "", (b) ? (b) : "")
+#endif
+
+#ifndef SPACESHIP_DEFAULTSTR
+#define SPACESHIP_DEFAULTSTR(a, b, s)  strcmp((a) ? (a) : (s), (b) ? (b) : (s))
+#endif
+
+#ifdef  __GNUC__  // defined by GCC and Clang
+
+#define ATTR_FORMAT(type, index, check) __attribute__((format (type, index, check)))
+#define ATTR_NONNULL                    __attribute__((nonnull))
+#define ATTR_NORETURN                   __attribute__((noreturn))
+#define ATTR_UNUSED                     __attribute__((unused))
+#define ATTR_MALLOC                     __attribute__((malloc))
+
+#else /* __GNUC__ */
+
+#define ATTR_FORMAT(type, index, check)
+#define ATTR_NONNULL
+#define ATTR_NORETURN
+#define ATTR_UNUSED
+#define ATTR_MALLOC
+
+#endif /* __GNUC__ */
+
+#ifdef HAVE_ATTR_ALLOC_SIZE
+
+#define ATTR_ALLOC_SIZE1(a)             __attribute__((alloc_size (a)))
+#define ATTR_ALLOC_SIZE2(a, b)          __attribute__((alloc_size (a, b)))
+
+#else
+
+#define ATTR_ALLOC_SIZE1(a)
+#define ATTR_ALLOC_SIZE2(a, b)
+
+#endif /* HAVE_ATTR_ALLOC_SIZE */
+
+// ignore casts discarding const specifier, e.g.
+//     const char []     ->  char * / void *
+//     const char *[2]'  ->  char *const *
+#if defined(__clang__)
+#define IGNORE_WCASTQUAL_BEGIN  _Pragma("clang diagnostic push") \
+                                _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#define IGNORE_WCASTQUAL_END    _Pragma("clang diagnostic pop")
+#elif defined(__GNUC__)
+#define IGNORE_WCASTQUAL_BEGIN  _Pragma("GCC diagnostic push") \
+                                _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+#define IGNORE_WCASTQUAL_END    _Pragma("GCC diagnostic pop")
+#else
+#define IGNORE_WCASTQUAL_BEGIN
+#define IGNORE_WCASTQUAL_END
+#endif
+
+/* This subtraction is used by Linux / NetBSD / OpenBSD for calculation of CPU usage items. */
+static inline unsigned long long saturatingSub(unsigned long long a, unsigned long long b) {
+   return a > b ? a - b : 0;
+}
+
+#endif

MainPanel.c

@@ -1,54 +1,39 @@
 /*
 htop - ColumnsPanel.c
 (C) 2004-2015 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "MainPanel.h"
-#include "Process.h"
-#include "Platform.h"
-#include "CRT.h"
 
+#include <ctype.h>
 #include <stdlib.h>
 
-/*{
-#include "Panel.h"
-#include "Action.h"
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Platform.h"
+#include "Process.h"
+#include "ProcessList.h"
+#include "ProvideCurses.h"
 #include "Settings.h"
+#include "XUtils.h"
 
-typedef struct MainPanel_ {
-   Panel super;
-   State* state;
-   IncSet* inc;
-   Htop_Action *keys;
-   pid_t pidSearch;
-} MainPanel;
 
-typedef bool(*MainPanel_ForeachProcessFn)(Process*, size_t);
-
-#define MainPanel_getFunctionBar(this_) (((Panel*)(this_))->defaultBar)
-
-}*/
-
-static const char* const MainFunctions[]  = {"Help  ", "Setup ", "Search", "Filter", "Tree  ", "SortBy", "Nice -", "Nice +", "Kill  ", "Quit  ", NULL};
+static const char* const MainFunctions[]     = {"Help  ", "Setup ", "Search", "Filter", "Tree  ", "SortBy", "Nice -", "Nice +", "Kill  ", "Quit  ", NULL};
+static const char* const MainFunctions_ro[]  = {"Help  ", "Setup ", "Search", "Filter", "Tree  ", "SortBy", "      ", "      ", "      ", "Quit  ", NULL};
 
 void MainPanel_updateTreeFunctions(MainPanel* this, bool mode) {
    FunctionBar* bar = MainPanel_getFunctionBar(this);
-   if (mode) {
-      FunctionBar_setLabel(bar, KEY_F(5), "Sorted");
-      FunctionBar_setLabel(bar, KEY_F(6), "Collap");
-   } else {
-      FunctionBar_setLabel(bar, KEY_F(5), "Tree  ");
-      FunctionBar_setLabel(bar, KEY_F(6), "SortBy");
-   }
+   FunctionBar_setLabel(bar, KEY_F(5), mode ? "List  " : "Tree  ");
 }
 
-void MainPanel_pidSearch(MainPanel* this, int ch) {
+static void MainPanel_pidSearch(MainPanel* this, int ch) {
    Panel* super = (Panel*) this;
-   pid_t pid = ch-48 + this->pidSearch;
+   pid_t pid = ch - 48 + this->pidSearch;
    for (int i = 0; i < Panel_size(super); i++) {
-      Process* p = (Process*) Panel_get(super, i);
+      const Process* p = (const Process*) Panel_get(super, i);
       if (p && p->pid == pid) {
          Panel_setSelected(super, i);
          break;
@@ -60,29 +45,45 @@ void MainPanel_pidSearch(MainPanel* this, int ch) {
    }
 }
 
+static const char* MainPanel_getValue(Panel* this, int i) {
+   const Process* p = (const Process*) Panel_get(this, i);
+   return Process_getCommand(p);
+}
+
 static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
    MainPanel* this = (MainPanel*) super;
 
    HandlerResult result = IGNORED;
-   
+
    Htop_Reaction reaction = HTOP_OK;
 
+   /* Let supervising ScreenManager handle resize */
+   if (ch == KEY_RESIZE)
+      return IGNORED;
+
+   /* reset on every normal key */
+   if (ch != ERR)
+      this->state->hideProcessSelection = false;
+
    if (EVENT_IS_HEADER_CLICK(ch)) {
       int x = EVENT_HEADER_CLICK_GET_X(ch);
-      ProcessList* pl = this->state->pl;
+      const ProcessList* pl = this->state->pl;
       Settings* settings = this->state->settings;
       int hx = super->scrollH + x + 1;
       ProcessField field = ProcessList_keyAt(pl, hx);
-      if (field == settings->sortKey) {
-         Settings_invertSortOrder(settings);
+      if (settings->treeView && settings->treeViewAlwaysByPID) {
          settings->treeView = false;
+         settings->direction = 1;
+         reaction |= Action_setSortKey(settings, field);
+      } else if (field == Settings_getActiveSortKey(settings)) {
+         Settings_invertSortOrder(settings);
       } else {
          reaction |= Action_setSortKey(settings, field);
       }
-      reaction |= HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_SAVE_SETTINGS; 
+      reaction |= HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_SAVE_SETTINGS;
       result = HANDLED;
    } else if (ch != ERR && this->inc->active) {
-      bool filterChanged = IncSet_handleKey(this->inc, ch, super, (IncMode_GetPanelValue) MainPanel_getValue, NULL);
+      bool filterChanged = IncSet_handleKey(this->inc, ch, super, MainPanel_getValue, NULL);
       if (filterChanged) {
          this->state->pl->incFilter = IncSet_filter(this->inc);
          reaction = HTOP_REFRESH | HTOP_REDRAW_BAR;
@@ -93,11 +94,12 @@ static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
       }
       result = HANDLED;
    } else if (ch == 27) {
+      this->state->hideProcessSelection = true;
       return HANDLED;
    } else if (ch != ERR && ch > 0 && ch < KEY_MAX && this->keys[ch]) {
       reaction |= (this->keys[ch])(this->state);
       result = HANDLED;
-   } else if (isdigit(ch)) {
+   } else if (0 < ch && ch < 255 && isdigit((unsigned char)ch)) {
       MainPanel_pidSearch(this, ch);
    } else {
       if (ch != ERR) {
@@ -109,14 +111,16 @@ static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
 
    if (reaction & HTOP_REDRAW_BAR) {
       MainPanel_updateTreeFunctions(this, this->state->settings->treeView);
-      IncSet_drawBar(this->inc);
+   }
+   if (reaction & HTOP_RESIZE) {
+      result |= RESIZE;
    }
    if (reaction & HTOP_UPDATE_PANELHDR) {
-      ProcessList_printHeader(this->state->pl, Panel_getHeader(super));
+      result |= REDRAW;
    }
    if (reaction & HTOP_REFRESH) {
-      result |= REDRAW;
-   }      
+      result |= REFRESH;
+   }
    if (reaction & HTOP_RECALCULATE) {
       result |= RESCAN;
    }
@@ -128,27 +132,20 @@ static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
    }
    if (!(reaction & HTOP_KEEP_FOLLOWING)) {
       this->state->pl->following = -1;
-      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+      Panel_setSelectionColor(super, PANEL_SELECTION_FOCUS);
    }
    return result;
 }
 
 int MainPanel_selectedPid(MainPanel* this) {
-   Process* p = (Process*) Panel_getSelected((Panel*)this);
+   const Process* p = (const Process*) Panel_getSelected((Panel*)this);
    if (p) {
       return p->pid;
    }
    return -1;
 }
 
-const char* MainPanel_getValue(MainPanel* this, int i) {
-   Process* p = (Process*) Panel_get((Panel*)this, i);
-   if (p)
-      return p->comm;
-   return "";
-}
-
-bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, size_t arg, bool* wasAnyTagged) {
+bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged) {
    Panel* super = (Panel*) this;
    bool ok = true;
    bool anyTagged = false;
@@ -161,24 +158,48 @@ bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, si
    }
    if (!anyTagged) {
       Process* p = (Process*) Panel_getSelected(super);
-      if (p) ok = fn(p, arg) && ok;
+      if (p) {
+         ok &= fn(p, arg);
+      }
    }
+
    if (wasAnyTagged)
       *wasAnyTagged = anyTagged;
+
    return ok;
 }
 
-PanelClass MainPanel_class = {
+static void MainPanel_drawFunctionBar(Panel* super, bool hideFunctionBar) {
+   MainPanel* this = (MainPanel*) super;
+
+   // Do not hide active search and filter bar.
+   if (hideFunctionBar && !this->inc->active)
+      return;
+
+   IncSet_drawBar(this->inc);
+   if (this->state->pauseProcessUpdate) {
+      FunctionBar_append("PAUSED", CRT_colors[PAUSED]);
+   }
+}
+
+static void MainPanel_printHeader(Panel* super) {
+   MainPanel* this = (MainPanel*) super;
+   ProcessList_printHeader(this->state->pl, &super->header);
+}
+
+const PanelClass MainPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = MainPanel_delete
    },
-   .eventHandler = MainPanel_eventHandler
+   .eventHandler = MainPanel_eventHandler,
+   .drawFunctionBar = MainPanel_drawFunctionBar,
+   .printHeader = MainPanel_printHeader
 };
 
 MainPanel* MainPanel_new() {
    MainPanel* this = AllocThis(MainPanel);
-   Panel_init((Panel*) this, 1, 1, 1, 1, Class(Process), false, FunctionBar_new(MainFunctions, NULL, NULL));
+   Panel_init((Panel*) this, 1, 1, 1, 1, Class(Process), false, FunctionBar_new(Settings_isReadonly() ? MainFunctions_ro : MainFunctions, NULL, NULL));
    this->keys = xCalloc(KEY_MAX, sizeof(Htop_Action));
    this->inc = IncSet_new(MainPanel_getFunctionBar(this));
 

MainPanel.h

@@ -1,44 +1,46 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_MainPanel
 #define HEADER_MainPanel
 /*
 htop - ColumnsPanel.h
 (C) 2004-2015 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Panel.h"
+#include "config.h" // IWYU pragma: keep
+
+#include <stdbool.h>
+#include <sys/types.h>
+
 #include "Action.h"
-#include "Settings.h"
+#include "IncSet.h"
+#include "Object.h"
+#include "Panel.h"
+#include "Process.h"
+
 
 typedef struct MainPanel_ {
    Panel super;
    State* state;
    IncSet* inc;
-   Htop_Action *keys;
+   Htop_Action* keys;
    pid_t pidSearch;
 } MainPanel;
 
-typedef bool(*MainPanel_ForeachProcessFn)(Process*, size_t);
+typedef bool(*MainPanel_ForeachProcessFn)(Process*, Arg);
 
 #define MainPanel_getFunctionBar(this_) (((Panel*)(this_))->defaultBar)
 
-
 void MainPanel_updateTreeFunctions(MainPanel* this, bool mode);
 
-void MainPanel_pidSearch(MainPanel* this, int ch);
-
 int MainPanel_selectedPid(MainPanel* this);
 
-const char* MainPanel_getValue(MainPanel* this, int i);
+bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged);
 
-bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, size_t arg, bool* wasAnyTagged);
+extern const PanelClass MainPanel_class;
 
-extern PanelClass MainPanel_class;
-
-MainPanel* MainPanel_new();
+MainPanel* MainPanel_new(void);
 
 void MainPanel_setState(MainPanel* this, State* state);
 

Makefile.am

@@ -1,116 +1,453 @@
-
-ACLOCAL_AMFLAGS = -I m4
-AUTOMAKE_OPTIONS = subdir-objects
-
-bin_PROGRAMS = htop
-
 dist_man_MANS = htop.1
-EXTRA_DIST = $(dist_man_MANS) htop.desktop htop.png scripts/MakeHeader.py \
-install-sh autogen.sh missing
+EXTRA_DIST = \
+	$(dist_man_MANS) \
+	autogen.sh \
+	htop.desktop \
+	htop.png \
+	htop.svg \
+	build-aux/compile \
+	build-aux/depcomp \
+	build-aux/install-sh \
+	build-aux/missing
 applicationsdir = $(datadir)/applications
 applications_DATA = htop.desktop
 pixmapdir = $(datadir)/pixmaps
 pixmap_DATA = htop.png
+appicondir = $(datadir)/icons/hicolor/scalable/apps
+appicon_DATA = htop.svg
 
-htop_CFLAGS = -pedantic -Wall $(wextra_flag) -std=c99 -D_XOPEN_SOURCE_EXTENDED -DSYSCONFDIR=\"$(sysconfdir)\" -I"$(top_srcdir)/$(my_htop_platform)"
-htop_LDFLAGS = 
-AM_CPPFLAGS = -DNDEBUG
+AM_CFLAGS += -pedantic -std=c99 -D_XOPEN_SOURCE_EXTENDED -DSYSCONFDIR="\"$(sysconfdir)\"" -I"$(top_srcdir)/$(my_htop_platform)"
+AM_LDFLAGS =
 
-myhtopsources = AvailableMetersPanel.c CategoriesPanel.c CheckItem.c \
-ClockMeter.c ColorsPanel.c ColumnsPanel.c CPUMeter.c CRT.c MainPanel.c \
-DisplayOptionsPanel.c FunctionBar.c Hashtable.c Header.c htop.c ListItem.c \
-LoadAverageMeter.c MemoryMeter.c Meter.c MetersPanel.c Object.c Panel.c \
-BatteryMeter.c Process.c ProcessList.c RichString.c ScreenManager.c Settings.c \
-SignalsPanel.c StringUtils.c SwapMeter.c TasksMeter.c UptimeMeter.c \
-TraceScreen.c UsersTable.c Vector.c AvailableColumnsPanel.c AffinityPanel.c \
-HostnameMeter.c OpenFilesScreen.c Affinity.c IncSet.c Action.c EnvScreen.c \
-InfoScreen.c XAlloc.c
+myhtopsources = \
+	Action.c \
+	Affinity.c \
+	AffinityPanel.c \
+	AvailableColumnsPanel.c \
+	AvailableMetersPanel.c \
+	BatteryMeter.c \
+	CategoriesPanel.c \
+	ClockMeter.c \
+	ColorsPanel.c \
+	ColumnsPanel.c \
+	CommandLine.c \
+	CommandScreen.c \
+	Compat.c \
+	CPUMeter.c \
+	CRT.c \
+	DateMeter.c \
+	DateTimeMeter.c \
+	DiskIOMeter.c \
+	DisplayOptionsPanel.c \
+	DynamicColumn.c \
+	DynamicMeter.c \
+	EnvScreen.c \
+	FunctionBar.c \
+	Hashtable.c \
+	Header.c \
+	HeaderOptionsPanel.c \
+	HostnameMeter.c \
+	IncSet.c \
+	InfoScreen.c \
+	ListItem.c \
+	LoadAverageMeter.c \
+	MainPanel.c \
+	MemoryMeter.c \
+	MemorySwapMeter.c \
+	Meter.c \
+	MetersPanel.c \
+	NetworkIOMeter.c \
+	Object.c \
+	OpenFilesScreen.c \
+	OptionItem.c \
+	Panel.c \
+	Process.c \
+	ProcessList.c \
+	ProcessLocksScreen.c \
+	RichString.c \
+	ScreenManager.c \
+	Settings.c \
+	SignalsPanel.c \
+	SwapMeter.c \
+	SysArchMeter.c \
+	TasksMeter.c \
+	TraceScreen.c \
+	UptimeMeter.c \
+	UsersTable.c \
+	Vector.c \
+	XUtils.c
 
-myhtopheaders = AvailableColumnsPanel.h AvailableMetersPanel.h \
-CategoriesPanel.h CheckItem.h ClockMeter.h ColorsPanel.h ColumnsPanel.h \
-CPUMeter.h CRT.h MainPanel.h DisplayOptionsPanel.h FunctionBar.h \
-Hashtable.h Header.h htop.h ListItem.h LoadAverageMeter.h MemoryMeter.h \
-BatteryMeter.h Meter.h MetersPanel.h Object.h Panel.h ProcessList.h RichString.h \
-ScreenManager.h Settings.h SignalsPanel.h StringUtils.h SwapMeter.h \
-TasksMeter.h UptimeMeter.h TraceScreen.h UsersTable.h Vector.h Process.h \
-AffinityPanel.h HostnameMeter.h OpenFilesScreen.h Affinity.h IncSet.h Action.h \
-EnvScreen.h InfoScreen.h XAlloc.h
+myhtopheaders = \
+	Action.h \
+	Affinity.h \
+	AffinityPanel.h \
+	AvailableColumnsPanel.h \
+	AvailableMetersPanel.h \
+	BatteryMeter.h \
+	CPUMeter.h \
+	CRT.h \
+	CategoriesPanel.h \
+	ClockMeter.h \
+	ColorsPanel.h \
+	ColumnsPanel.h \
+	CommandLine.h \
+	CommandScreen.h \
+	Compat.h \
+	DateMeter.h \
+	DateTimeMeter.h \
+	DiskIOMeter.h \
+	DisplayOptionsPanel.h \
+	DynamicColumn.h \
+	DynamicMeter.h \
+	EnvScreen.h \
+	FunctionBar.h \
+	Hashtable.h \
+	Header.h \
+	HeaderLayout.h \
+	HeaderOptionsPanel.h \
+	HostnameMeter.h \
+	IncSet.h \
+	InfoScreen.h \
+	ListItem.h \
+	LoadAverageMeter.h \
+	Macros.h \
+	MainPanel.h \
+	MemoryMeter.h \
+	MemorySwapMeter.h \
+	Meter.h \
+	MetersPanel.h \
+	NetworkIOMeter.h \
+	Object.h \
+	OpenFilesScreen.h \
+	OptionItem.h \
+	Panel.h \
+	Process.h \
+	ProcessList.h \
+	ProcessLocksScreen.h \
+	ProvideCurses.h \
+	RichString.h \
+	ScreenManager.h \
+	Settings.h \
+	SignalsPanel.h \
+	SwapMeter.h \
+	SysArchMeter.h \
+	TasksMeter.h \
+	TraceScreen.h \
+	UptimeMeter.h \
+	UsersTable.h \
+	Vector.h \
+	XUtils.h
+
+# Linux
+# -----
+
+linux_platform_headers = \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/uname.h \
+	linux/HugePageMeter.h \
+	linux/IOPriority.h \
+	linux/IOPriorityPanel.h \
+	linux/LibSensors.h \
+	linux/LinuxProcess.h \
+	linux/LinuxProcessList.h \
+	linux/Platform.h \
+	linux/PressureStallMeter.h \
+	linux/ProcessField.h \
+	linux/SELinuxMeter.h \
+	linux/SystemdMeter.h \
+	linux/ZramMeter.h \
+	linux/ZramStats.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+linux_platform_sources = \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/uname.c \
+	linux/HugePageMeter.c \
+	linux/IOPriorityPanel.c \
+	linux/LibSensors.c \
+	linux/LinuxProcess.c \
+	linux/LinuxProcessList.c \
+	linux/Platform.c \
+	linux/PressureStallMeter.c \
+	linux/SELinuxMeter.c \
+	linux/SystemdMeter.c \
+	linux/ZramMeter.c \
+	zfs/ZfsArcMeter.c \
+	zfs/ZfsCompressedArcMeter.c
 
 if HTOP_LINUX
-htop_CFLAGS += -rdynamic 
-myhtopplatsources = linux/Platform.c linux/IOPriorityPanel.c linux/IOPriority.c \
-linux/LinuxProcess.c linux/LinuxProcessList.c linux/LinuxCRT.c linux/Battery.c
-
-myhtopplatheaders = linux/Platform.h linux/IOPriorityPanel.h linux/IOPriority.h \
-linux/LinuxProcess.h linux/LinuxProcessList.h linux/LinuxCRT.h linux/Battery.h
+AM_LDFLAGS += -rdynamic
+myhtopplatprogram = htop
+myhtopplatheaders = $(linux_platform_headers)
+myhtopplatsources = $(linux_platform_sources)
 endif
 
+# FreeBSD
+# -------
+
+freebsd_platform_headers = \
+	freebsd/FreeBSDProcessList.h \
+	freebsd/FreeBSDProcess.h \
+	freebsd/Platform.h \
+	freebsd/ProcessField.h \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/openzfs_sysctl.h \
+	generic/uname.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+freebsd_platform_sources = \
+	freebsd/Platform.c \
+	freebsd/FreeBSDProcessList.c \
+	freebsd/FreeBSDProcess.c \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/openzfs_sysctl.c \
+	generic/uname.c \
+	zfs/ZfsArcMeter.c \
+	zfs/ZfsCompressedArcMeter.c
+
 if HTOP_FREEBSD
-myhtopplatsources = freebsd/Platform.c freebsd/FreeBSDProcessList.c \
-freebsd/FreeBSDProcess.c freebsd/FreeBSDCRT.c freebsd/Battery.c
-
-myhtopplatheaders = freebsd/Platform.h freebsd/FreeBSDProcessList.h \
-freebsd/FreeBSDProcess.h freebsd/FreeBSDCRT.h freebsd/Battery.h
+myhtopplatprogram = htop
+myhtopplatheaders = $(freebsd_platform_headers)
+myhtopplatsources = $(freebsd_platform_sources)
 endif
 
+# DragonFlyBSD
+# ------------
+
+dragonflybsd_platform_headers = \
+	dragonflybsd/DragonFlyBSDProcessList.h \
+	dragonflybsd/DragonFlyBSDProcess.h \
+	dragonflybsd/Platform.h \
+	dragonflybsd/ProcessField.h \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/uname.h
+
+dragonflybsd_platform_sources = \
+	dragonflybsd/DragonFlyBSDProcessList.c \
+	dragonflybsd/DragonFlyBSDProcess.c \
+	dragonflybsd/Platform.c \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/uname.c
+
 if HTOP_DRAGONFLYBSD
-htop_LDFLAGS += -lkvm -lkinfo -lexecinfo
-myhtopplatsources = dragonflybsd/Platform.c dragonflybsd/DragonFlyBSDProcessList.c \
-dragonflybsd/DragonFlyBSDProcess.c dragonflybsd/DragonFlyBSDCRT.c dragonflybsd/Battery.c
-
-myhtopplatheaders = dragonflybsd/Platform.h dragonflybsd/DragonFlyBSDProcessList.h \
-dragonflybsd/DragonFlyBSDProcess.h dragonflybsd/DragonFlyBSDCRT.h dragonflybsd/Battery.h
+myhtopplatprogram = htop
+myhtopplatheaders = $(dragonflybsd_platform_headers)
+myhtopplatsources = $(dragonflybsd_platform_sources)
 endif
 
+# NetBSD
+# -------
+
+netbsd_platform_headers = \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/uname.h \
+	netbsd/Platform.h \
+	netbsd/ProcessField.h \
+	netbsd/NetBSDProcess.h \
+	netbsd/NetBSDProcessList.h
+
+netbsd_platform_sources = \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/uname.c \
+	netbsd/Platform.c \
+	netbsd/NetBSDProcess.c \
+	netbsd/NetBSDProcessList.c
+
+if HTOP_NETBSD
+myhtopplatprogram = htop
+myhtopplatheaders = $(netbsd_platform_headers)
+myhtopplatsources = $(netbsd_platform_sources)
+endif
+
+# OpenBSD
+# -------
+
+openbsd_platform_headers = \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/uname.h \
+	openbsd/OpenBSDProcessList.h \
+	openbsd/OpenBSDProcess.h \
+	openbsd/Platform.h \
+	openbsd/ProcessField.h
+
+openbsd_platform_sources = \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/uname.c \
+	openbsd/OpenBSDProcessList.c \
+	openbsd/OpenBSDProcess.c \
+	openbsd/Platform.c
+
 if HTOP_OPENBSD
-myhtopplatsources = openbsd/Platform.c openbsd/OpenBSDProcessList.c \
-openbsd/OpenBSDProcess.c openbsd/OpenBSDCRT.c openbsd/Battery.c
-
-myhtopplatheaders = openbsd/Platform.h openbsd/OpenBSDProcessList.h \
-openbsd/OpenBSDProcess.h openbsd/OpenBSDCRT.h openbsd/Battery.h
+myhtopplatprogram = htop
+myhtopplatheaders = $(openbsd_platform_headers)
+myhtopplatsources = $(openbsd_platform_sources)
 endif
 
+# Darwin
+# ------
+
+darwin_platform_headers = \
+	darwin/DarwinProcess.h \
+	darwin/DarwinProcessList.h \
+	darwin/Platform.h \
+	darwin/ProcessField.h \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/openzfs_sysctl.h \
+	generic/uname.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+darwin_platform_sources = \
+	darwin/Platform.c \
+	darwin/DarwinProcess.c \
+	darwin/DarwinProcessList.c \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/openzfs_sysctl.c \
+	generic/uname.c \
+	zfs/ZfsArcMeter.c \
+	zfs/ZfsCompressedArcMeter.c
+
 if HTOP_DARWIN
-htop_LDFLAGS += -framework IOKit -framework CoreFoundation
-myhtopplatsources = darwin/Platform.c darwin/DarwinProcess.c \
-darwin/DarwinProcessList.c darwin/DarwinCRT.c darwin/Battery.c
-
-myhtopplatheaders = darwin/Platform.h darwin/DarwinProcess.h \
-darwin/DarwinProcessList.h darwin/DarwinCRT.h darwin/Battery.h
+AM_LDFLAGS += -framework IOKit -framework CoreFoundation
+myhtopplatprogram = htop
+myhtopplatheaders = $(darwin_platform_headers)
+myhtopplatsources = $(darwin_platform_sources)
 endif
 
+# Solaris
+# -------
+
+solaris_platform_headers = \
+	generic/gettime.h \
+	generic/hostname.h \
+	generic/uname.h \
+	solaris/ProcessField.h \
+	solaris/Platform.h \
+	solaris/SolarisProcess.h \
+	solaris/SolarisProcessList.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+solaris_platform_sources = \
+	generic/gettime.c \
+	generic/hostname.c \
+	generic/uname.c \
+	solaris/Platform.c \
+	solaris/SolarisProcess.c \
+	solaris/SolarisProcessList.c \
+	zfs/ZfsArcMeter.c \
+	zfs/ZfsCompressedArcMeter.c
+
+if HTOP_SOLARIS
+myhtopplatprogram = htop
+myhtopplatheaders = $(solaris_platform_headers)
+myhtopplatsources = $(solaris_platform_sources)
+endif
+
+# Performance Co-Pilot (PCP)
+# --------------------------
+
+pcp_platform_headers = \
+	linux/PressureStallMeter.h \
+	linux/ZramMeter.h \
+	linux/ZramStats.h \
+	pcp/PCPDynamicColumn.h \
+	pcp/PCPDynamicMeter.h \
+	pcp/PCPMetric.h \
+	pcp/PCPProcess.h \
+	pcp/PCPProcessList.h \
+	pcp/Platform.h \
+	pcp/ProcessField.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+pcp_platform_sources = \
+	linux/PressureStallMeter.c \
+	linux/ZramMeter.c \
+	pcp/PCPDynamicColumn.c \
+	pcp/PCPDynamicMeter.c \
+	pcp/PCPMetric.c \
+	pcp/PCPProcess.c \
+	pcp/PCPProcessList.c \
+	pcp/Platform.c \
+	zfs/ZfsArcMeter.c \
+	zfs/ZfsCompressedArcMeter.c
+
+if HTOP_PCP
+myhtopplatprogram = pcp-htop
+myhtopplatheaders = $(pcp_platform_headers)
+myhtopplatsources = $(pcp_platform_sources)
+pcp_htop_SOURCES  = $(myhtopplatprogram).c $(myhtopheaders) $(myhtopplatheaders) $(myhtopsources) $(myhtopplatsources)
+endif
+
+# Unsupported
+# -----------
+
+unsupported_platform_headers = \
+	generic/gettime.h \
+	unsupported/Platform.h \
+	unsupported/ProcessField.h \
+	unsupported/UnsupportedProcess.h \
+	unsupported/UnsupportedProcessList.h
+
+unsupported_platform_sources = \
+	generic/gettime.c \
+	unsupported/Platform.c \
+	unsupported/UnsupportedProcess.c \
+	unsupported/UnsupportedProcessList.c
+
 if HTOP_UNSUPPORTED
-myhtopplatsources = unsupported/Platform.c \
-unsupported/UnsupportedProcess.c unsupported/UnsupportedProcessList.c \
-unsupported/UnsupportedCRT.c unsupported/Battery.c
-
-myhtopplatheaders = unsupported/Platform.h \
-unsupported/UnsupportedProcess.h unsupported/UnsupportedProcessList.h \
-unsupported/UnsupportedCRT.h unsupported/Battery.h
+myhtopplatprogram = htop
+myhtopplatsources = $(unsupported_platform_sources)
+myhtopplatheaders = $(unsupported_platform_headers)
 endif
 
-SUFFIXES = .h
+# ----
 
-BUILT_SOURCES = $(myhtopheaders) $(myhtopplatheaders)
-htop_SOURCES  = $(myhtopheaders) $(myhtopplatheaders) $(myhtopsources) $(myhtopplatsources) config.h
+bin_PROGRAMS = $(myhtopplatprogram)
+htop_SOURCES = $(myhtopplatprogram).c $(myhtopheaders) $(myhtopplatheaders) $(myhtopsources) $(myhtopplatsources)
+nodist_htop_SOURCES = config.h
 
 target:
 	echo $(htop_SOURCES)
 
 profile:
-	$(MAKE) all CFLAGS="-pg" AM_CPPFLAGS="-pg -O2 -DNDEBUG"
+	$(MAKE) all AM_CPPFLAGS="-pg -O2 -DNDEBUG"
 
 debug:
-	$(MAKE) all CFLAGS="" AM_CPPFLAGS="-ggdb -DDEBUG"
+	$(MAKE) all AM_CPPFLAGS="-ggdb3 -Og" CFLAGS="`printf ' %s ' "$(CFLAGS)"|sed -E 's#[[:space:]]-O[^[:space:]]+[[:space:]]# #g'` -ggdb3 -Og"
 
 coverage:
-	$(MAKE) all CFLAGS="" AM_CPPFLAGS="-fprofile-arcs -ftest-coverage -DDEBUG" LDFLAGS="-lgcov"
-
-.c.h:
-	@srcdir@/scripts/MakeHeader.py $<
+	$(MAKE) all AM_CPPFLAGS="-fprofile-arcs -ftest-coverage" AM_LDFLAGS="-lgcov"
 
 cppcheck:
-	cppcheck -q -v . --enable=all -DHAVE_CGROUP -DHAVE_OPENVZ -DHAVE_TASKSTATS
+	cppcheck -q -v . --enable=all -DHAVE_OPENVZ
+
+dist-hook: $(top_distdir)/configure
+	@if grep 'pkg_m4_absent' '$(top_distdir)/configure'; then \
+	   echo 'configure is generated without pkg.m4. Please supply pkg.m4 and run ./autogen.sh to rebuild the configure script.'>&2; \
+	   (exit 1); \
+	else :; \
+	fi
 
 .PHONY: lcov
 

MemoryMeter.c

@@ -1,68 +1,93 @@
 /*
 htop - MemoryMeter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "MemoryMeter.h"
 
-#include "CRT.h"
-#include "Platform.h"
-
-#include <stdlib.h>
-#include <string.h>
 #include <math.h>
-#include <sys/param.h>
-#include <assert.h>
+#include <stddef.h>
 
-/*{
-#include "Meter.h"
-}*/
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "RichString.h"
 
-int MemoryMeter_attributes[] = {
-   MEMORY_USED, MEMORY_BUFFERS, MEMORY_CACHE
+
+static const int MemoryMeter_attributes[] = {
+   MEMORY_USED,
+   MEMORY_BUFFERS,
+   MEMORY_SHARED,
+   MEMORY_CACHE
 };
 
-static void MemoryMeter_updateValues(Meter* this, char* buffer, int size) {
+static void MemoryMeter_updateValues(Meter* this) {
+   char* buffer = this->txtBuffer;
+   size_t size = sizeof(this->txtBuffer);
    int written;
+
+   /* shared and available memory are not supported on all platforms */
+   this->values[2] = NAN;
+   this->values[4] = NAN;
    Platform_setMemoryValues(this);
 
-   written = Meter_humanUnit(buffer, this->values[0], size);
-   buffer += written;
-   if ((size -= written) > 0) {
-      *buffer++ = '/';
-      size--;
-      Meter_humanUnit(buffer, this->total, size);
+   /* Do not print available memory in bar mode */
+   this->curItems = 4;
+
+   written = Meter_humanUnit(buffer, isnan(this->values[4]) ? this->values[0] : this->total - this->values[4], size);
+   METER_BUFFER_CHECK(buffer, size, written);
+
+   METER_BUFFER_APPEND_CHR(buffer, size, '/');
+
+   Meter_humanUnit(buffer, this->total, size);
+}
+
+static void MemoryMeter_display(const Object* cast, RichString* out) {
+   char buffer[50];
+   const Meter* this = (const Meter*)cast;
+
+   RichString_writeAscii(out, CRT_colors[METER_TEXT], ":");
+   Meter_humanUnit(buffer, this->total, sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
+
+   Meter_humanUnit(buffer, this->values[0], sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " used:");
+   RichString_appendAscii(out, CRT_colors[MEMORY_USED], buffer);
+
+   Meter_humanUnit(buffer, this->values[1], sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " buffers:");
+   RichString_appendAscii(out, CRT_colors[MEMORY_BUFFERS_TEXT], buffer);
+
+   /* shared memory is not supported on all platforms */
+   if (!isnan(this->values[2])) {
+      Meter_humanUnit(buffer, this->values[2], sizeof(buffer));
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " shared:");
+      RichString_appendAscii(out, CRT_colors[MEMORY_SHARED], buffer);
+   }
+
+   Meter_humanUnit(buffer, this->values[3], sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " cache:");
+   RichString_appendAscii(out, CRT_colors[MEMORY_CACHE], buffer);
+
+   /* available memory is not supported on all platforms */
+   if (!isnan(this->values[4])) {
+      Meter_humanUnit(buffer, this->values[4], sizeof(buffer));
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " available:");
+      RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
    }
 }
 
-static void MemoryMeter_display(Object* cast, RichString* out) {
-   char buffer[50];
-   Meter* this = (Meter*)cast;
-   RichString_write(out, CRT_colors[METER_TEXT], ":");
-   Meter_humanUnit(buffer, this->total, 50);
-   RichString_append(out, CRT_colors[METER_VALUE], buffer);
-   Meter_humanUnit(buffer, this->values[0], 50);
-   RichString_append(out, CRT_colors[METER_TEXT], " used:");
-   RichString_append(out, CRT_colors[MEMORY_USED], buffer);
-   Meter_humanUnit(buffer, this->values[1], 50);
-   RichString_append(out, CRT_colors[METER_TEXT], " buffers:");
-   RichString_append(out, CRT_colors[MEMORY_BUFFERS_TEXT], buffer);
-   Meter_humanUnit(buffer, this->values[2], 50);
-   RichString_append(out, CRT_colors[METER_TEXT], " cache:");
-   RichString_append(out, CRT_colors[MEMORY_CACHE], buffer);
-}
-
-MeterClass MemoryMeter_class = {
+const MeterClass MemoryMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,
       .display = MemoryMeter_display,
    },
-   .updateValues = MemoryMeter_updateValues, 
+   .updateValues = MemoryMeter_updateValues,
    .defaultMode = BAR_METERMODE,
-   .maxItems = 3,
+   .maxItems = 5,
    .total = 100.0,
    .attributes = MemoryMeter_attributes,
    .name = "Memory",

MemoryMeter.h

@@ -1,18 +1,15 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_MemoryMeter
 #define HEADER_MemoryMeter
 /*
 htop - MemoryMeter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
-extern int MemoryMeter_attributes[];
 
-extern MeterClass MemoryMeter_class;
+extern const MeterClass MemoryMeter_class;
 
 #endif

MemorySwapMeter.c

@@ -0,0 +1,102 @@
+/*
+htop - MemorySwapMeter.c
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "MemorySwapMeter.h"
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "Macros.h"
+#include "MemoryMeter.h"
+#include "Object.h"
+#include "SwapMeter.h"
+#include "XUtils.h"
+
+
+typedef struct MemorySwapMeterData_ {
+   Meter* memoryMeter;
+   Meter* swapMeter;
+} MemorySwapMeterData;
+
+static void MemorySwapMeter_updateValues(Meter* this) {
+   MemorySwapMeterData* data = this->meterData;
+
+   Meter_updateValues(data->memoryMeter);
+   Meter_updateValues(data->swapMeter);
+}
+
+static void MemorySwapMeter_draw(Meter* this, int x, int y, int w) {
+   MemorySwapMeterData* data = this->meterData;
+
+   assert(data->memoryMeter->draw);
+   data->memoryMeter->draw(data->memoryMeter, x, y, w / 2);
+   assert(data->swapMeter->draw);
+   data->swapMeter->draw(data->swapMeter, x + w / 2, y, w - w / 2);
+}
+
+static void MemorySwapMeter_init(Meter* this) {
+   MemorySwapMeterData* data = this->meterData;
+
+   if (!data) {
+      data = this->meterData = xMalloc(sizeof(MemorySwapMeterData));
+      data->memoryMeter = NULL;
+      data->swapMeter = NULL;
+   }
+
+   if (!data->memoryMeter)
+      data->memoryMeter = Meter_new(this->pl, 0, (const MeterClass*) Class(MemoryMeter));
+   if (!data->swapMeter)
+      data->swapMeter = Meter_new(this->pl, 0, (const MeterClass*) Class(SwapMeter));
+
+   if (Meter_initFn(data->memoryMeter))
+      Meter_init(data->memoryMeter);
+   if (Meter_initFn(data->swapMeter))
+      Meter_init(data->swapMeter);
+
+   if (this->mode == 0)
+      this->mode = BAR_METERMODE;
+
+   this->h = MAXIMUM(Meter_modes[data->memoryMeter->mode]->h, Meter_modes[data->swapMeter->mode]->h);
+}
+
+static void MemorySwapMeter_updateMode(Meter* this, int mode) {
+   MemorySwapMeterData* data = this->meterData;
+
+   this->mode = mode;
+
+   Meter_setMode(data->memoryMeter, mode);
+   Meter_setMode(data->swapMeter, mode);
+
+   this->h = MAXIMUM(Meter_modes[data->memoryMeter->mode]->h, Meter_modes[data->swapMeter->mode]->h);
+}
+
+static void MemorySwapMeter_done(Meter* this) {
+   MemorySwapMeterData* data = this->meterData;
+
+   Meter_delete((Object*)data->swapMeter);
+   Meter_delete((Object*)data->memoryMeter);
+
+   free(data);
+}
+
+const MeterClass MemorySwapMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+   },
+   .updateValues = MemorySwapMeter_updateValues,
+   .defaultMode = CUSTOM_METERMODE,
+   .name = "MemorySwap",
+   .uiName = "Memory & Swap",
+   .description = "Combined memory and swap usage",
+   .caption = "M&S",
+   .draw = MemorySwapMeter_draw,
+   .init = MemorySwapMeter_init,
+   .updateMode = MemorySwapMeter_updateMode,
+   .done = MemorySwapMeter_done
+};

MemorySwapMeter.h

@@ -0,0 +1,15 @@
+#ifndef HEADER_MemorySwapMeter
+#define HEADER_MemorySwapMeter
+/*
+htop - MemorySwapMeter.h
+(C) 2021 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "Meter.h"
+
+
+extern const MeterClass MemorySwapMeter_class;
+
+#endif

Meter.c

@@ -1,154 +1,61 @@
 /*
 htop - Meter.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "Meter.h"
 
-#include "RichString.h"
-#include "Object.h"
-#include "CRT.h"
-#include "StringUtils.h"
-#include "ListItem.h"
-#include "Settings.h"
-
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdarg.h>
 #include <assert.h>
-#include <sys/time.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
 
-#define METER_BUFFER_LEN 256
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "XUtils.h"
 
-#define GRAPH_DELAY (DEFAULT_DELAY/2)
 
 #define GRAPH_HEIGHT 4 /* Unit: rows (lines) */
 
-/*{
-#include "ListItem.h"
-
-#include <sys/time.h>
-
-typedef struct Meter_ Meter;
-
-typedef void(*Meter_Init)(Meter*);
-typedef void(*Meter_Done)(Meter*);
-typedef void(*Meter_UpdateMode)(Meter*, int);
-typedef void(*Meter_UpdateValues)(Meter*, char*, int);
-typedef void(*Meter_Draw)(Meter*, int, int, int);
-
-typedef struct MeterClass_ {
-   ObjectClass super;
-   const Meter_Init init;
-   const Meter_Done done;
-   const Meter_UpdateMode updateMode;
-   const Meter_Draw draw;
-   const Meter_UpdateValues updateValues;
-   const int defaultMode;
-   const double total;
-   const int* attributes;
-   const char* name;
-   const char* uiName;
-   const char* caption;
-   const char* description;
-   const char maxItems;
-   char curItems;
-} MeterClass;
-
-#define As_Meter(this_)                ((MeterClass*)((this_)->super.klass))
-#define Meter_initFn(this_)            As_Meter(this_)->init
-#define Meter_init(this_)              As_Meter(this_)->init((Meter*)(this_))
-#define Meter_done(this_)              As_Meter(this_)->done((Meter*)(this_))
-#define Meter_updateModeFn(this_)      As_Meter(this_)->updateMode
-#define Meter_updateMode(this_, m_)    As_Meter(this_)->updateMode((Meter*)(this_), m_)
-#define Meter_drawFn(this_)            As_Meter(this_)->draw
-#define Meter_doneFn(this_)            As_Meter(this_)->done
-#define Meter_updateValues(this_, buf_, sz_) \
-                                       As_Meter(this_)->updateValues((Meter*)(this_), buf_, sz_)
-#define Meter_defaultMode(this_)       As_Meter(this_)->defaultMode
-#define Meter_getItems(this_)          As_Meter(this_)->curItems
-#define Meter_setItems(this_, n_)      As_Meter(this_)->curItems = (n_)
-#define Meter_attributes(this_)        As_Meter(this_)->attributes
-#define Meter_name(this_)              As_Meter(this_)->name
-#define Meter_uiName(this_)            As_Meter(this_)->uiName
-
-struct Meter_ {
-   Object super;
-   Meter_Draw draw;
-   
-   char* caption;
-   int mode;
-   int param;
-   void* drawData;
-   int h;
-   struct ProcessList_* pl;
-   double* values;
-   double total;
-};
-
-typedef struct MeterMode_ {
-   Meter_Draw draw;
-   const char* uiName;
-   int h;
-} MeterMode;
-
-typedef enum {
-   CUSTOM_METERMODE = 0,
-   BAR_METERMODE,
-   TEXT_METERMODE,
-   GRAPH_METERMODE,
-   LED_METERMODE,
-   LAST_METERMODE
-} MeterModeId;
-
-typedef struct GraphData_ {
-   struct timeval time;
-   double values[METER_BUFFER_LEN];
-} GraphData;
-
-}*/
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-#ifndef CLAMP
-#define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
-#endif
-
-MeterClass Meter_class = {
+const MeterClass Meter_class = {
    .super = {
       .extends = Class(Object)
    }
 };
 
-Meter* Meter_new(struct ProcessList_* pl, int param, MeterClass* type) {
+Meter* Meter_new(const struct ProcessList_* pl, unsigned int param, const MeterClass* type) {
    Meter* this = xCalloc(1, sizeof(Meter));
    Object_setClass(this, type);
    this->h = 1;
    this->param = param;
    this->pl = pl;
-   type->curItems = type->maxItems;
-   this->values = xCalloc(type->maxItems, sizeof(double));
+   this->curItems = type->maxItems;
+   this->curAttributes = NULL;
+   this->values = type->maxItems ? xCalloc(type->maxItems, sizeof(double)) : NULL;
    this->total = type->total;
    this->caption = xStrdup(type->caption);
-   if (Meter_initFn(this))
+   if (Meter_initFn(this)) {
       Meter_init(this);
+   }
    Meter_setMode(this, type->defaultMode);
    return this;
 }
 
-int Meter_humanUnit(char* buffer, unsigned long int value, int size) {
-   const char * prefix = "KMGTPEZY";
+int Meter_humanUnit(char* buffer, unsigned long int value, size_t size) {
+   const char* prefix = "KMGTPEZY";
    unsigned long int powi = 1;
-   unsigned int written, powj = 1, precision = 2;
+   unsigned int powj = 1, precision = 2;
 
-   for(;;) {
+   for (;;) {
       if (value / 1024 < powi)
          break;
 
@@ -168,15 +75,13 @@ int Meter_humanUnit(char* buffer, unsigned long int value, int size) {
          break;
    }
 
-   written = snprintf(buffer, size, "%.*f%c",
-      precision, (double) value / powi, *prefix);
-
-   return written;
+   return snprintf(buffer, size, "%.*f%c", precision, (double) value / powi, *prefix);
 }
 
 void Meter_delete(Object* cast) {
    if (!cast)
       return;
+
    Meter* this = (Meter*) cast;
    if (Meter_doneFn(this)) {
       Meter_done(this);
@@ -188,53 +93,58 @@ void Meter_delete(Object* cast) {
 }
 
 void Meter_setCaption(Meter* this, const char* caption) {
-   free(this->caption);
-   this->caption = xStrdup(caption);
+   free_and_xStrdup(&this->caption, caption);
 }
 
-static inline void Meter_displayBuffer(Meter* this, char* buffer, RichString* out) {
+static inline void Meter_displayBuffer(const Meter* this, RichString* out) {
    if (Object_displayFn(this)) {
       Object_display(this, out);
    } else {
-      RichString_write(out, CRT_colors[Meter_attributes(this)[0]], buffer);
+      RichString_writeWide(out, CRT_colors[Meter_attributes(this)[0]], this->txtBuffer);
    }
 }
 
 void Meter_setMode(Meter* this, int modeIndex) {
-   if (modeIndex > 0 && modeIndex == this->mode)
+   if (modeIndex > 0 && modeIndex == this->mode) {
       return;
-   if (!modeIndex)
+   }
+
+   if (!modeIndex) {
       modeIndex = 1;
+   }
+
    assert(modeIndex < LAST_METERMODE);
    if (Meter_defaultMode(this) == CUSTOM_METERMODE) {
       this->draw = Meter_drawFn(this);
-      if (Meter_updateModeFn(this))
+      if (Meter_updateModeFn(this)) {
          Meter_updateMode(this, modeIndex);
+      }
    } else {
       assert(modeIndex >= 1);
       free(this->drawData);
       this->drawData = NULL;
 
-      MeterMode* mode = Meter_modes[modeIndex];
+      const MeterMode* mode = Meter_modes[modeIndex];
       this->draw = mode->draw;
       this->h = mode->h;
    }
    this->mode = modeIndex;
 }
 
-ListItem* Meter_toListItem(Meter* this, bool moving) {
-   char mode[21];
-   if (this->mode)
-      xSnprintf(mode, 20, " [%s]", Meter_modes[this->mode]->uiName);
-   else
+ListItem* Meter_toListItem(const Meter* this, bool moving) {
+   char mode[20];
+   if (this->mode) {
+      xSnprintf(mode, sizeof(mode), " [%s]", Meter_modes[this->mode]->uiName);
+   } else {
       mode[0] = '\0';
-   char number[11];
-   if (this->param > 0)
-      xSnprintf(number, 10, " %d", this->param);
+   }
+   char name[32];
+   if (Meter_getUiNameFn(this))
+      Meter_getUiName(this, name, sizeof(name));
    else
-      number[0] = '\0';
-   char buffer[51];
-   xSnprintf(buffer, 50, "%s%s%s", Meter_uiName(this), number, mode);
+      xSnprintf(name, sizeof(name), "%s", Meter_uiName(this));
+   char buffer[50];
+   xSnprintf(buffer, sizeof(buffer), "%s%s", name, mode);
    ListItem* li = ListItem_new(buffer, 0);
    li->moving = moving;
    return li;
@@ -243,19 +153,21 @@ ListItem* Meter_toListItem(Meter* this, bool moving) {
 /* ---------- TextMeterMode ---------- */
 
 static void TextMeterMode_draw(Meter* this, int x, int y, int w) {
-   char buffer[METER_BUFFER_LEN];
-   Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);
-   (void) w;
-
+   const char* caption = Meter_getCaption(this);
    attrset(CRT_colors[METER_TEXT]);
-   mvaddstr(y, x, this->caption);
-   int captionLen = strlen(this->caption);
-   x += captionLen;
+   mvaddnstr(y, x, caption, w - 1);
    attrset(CRT_colors[RESET_COLOR]);
+
+   int captionLen = strlen(caption);
+   x += captionLen;
+   w -= captionLen;
+   if (w <= 0)
+      return;
+
    RichString_begin(out);
-   Meter_displayBuffer(this, buffer, &out);
-   RichString_printVal(out, y, x);
-   RichString_end(out);
+   Meter_displayBuffer(this, &out);
+   RichString_printoffnVal(out, y, x, 0, w - 1);
+   RichString_delete(&out);
 }
 
 /* ---------- BarMeterMode ---------- */
@@ -263,40 +175,58 @@ static void TextMeterMode_draw(Meter* this, int x, int y, int w) {
 static const char BarMeterMode_characters[] = "|#*@$%&.";
 
 static void BarMeterMode_draw(Meter* this, int x, int y, int w) {
-   char buffer[METER_BUFFER_LEN];
-   Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);
-
+   const char* caption = Meter_getCaption(this);
    w -= 2;
    attrset(CRT_colors[METER_TEXT]);
    int captionLen = 3;
-   mvaddnstr(y, x, this->caption, captionLen);
+   mvaddnstr(y, x, caption, captionLen);
    x += captionLen;
    w -= captionLen;
    attrset(CRT_colors[BAR_BORDER]);
    mvaddch(y, x, '[');
-   mvaddch(y, x + w, ']');
-   
+   mvaddch(y, x + MAXIMUM(w, 0), ']');
+   attrset(CRT_colors[RESET_COLOR]);
+
    w--;
    x++;
 
-   if (w < 1) {
-      attrset(CRT_colors[RESET_COLOR]);
+   if (w < 1)
       return;
-   }
-   char bar[w + 1];
-   
-   int blockSizes[10];
 
-   xSnprintf(bar, w + 1, "%*s", w, buffer);
+   // The text in the bar is right aligned;
+   // Pad with maximal spaces and then calculate needed starting position offset
+   RichString_begin(bar);
+   RichString_appendChr(&bar, 0, ' ', w);
+   RichString_appendWide(&bar, 0, this->txtBuffer);
+   int startPos = RichString_sizeVal(bar) - w;
+   if (startPos > w) {
+      // Text is too large for bar
+      // Truncate meter text at a space character
+      for (int pos = 2 * w; pos > w; pos--) {
+         if (RichString_getCharVal(bar, pos) == ' ') {
+            while (pos > w && RichString_getCharVal(bar, pos - 1) == ' ')
+               pos--;
+            startPos = pos - w;
+            break;
+         }
+      }
+
+      // If still too large, print the start not the end
+      startPos = MINIMUM(startPos, w);
+   }
+   assert(startPos >= 0);
+   assert(startPos <= w);
+   assert(startPos + w <= RichString_sizeVal(bar));
+
+   int blockSizes[10];
 
    // First draw in the bar[] buffer...
    int offset = 0;
-   int items = Meter_getItems(this);
-   for (int i = 0; i < items; i++) {
+   for (uint8_t i = 0; i < this->curItems; i++) {
       double value = this->values[i];
       value = CLAMP(value, 0.0, this->total);
       if (value > 0) {
-         blockSizes[i] = ceil((value/this->total) * w);
+         blockSizes[i] = ceil((value / this->total) * w);
       } else {
          blockSizes[i] = 0;
       }
@@ -304,11 +234,11 @@ static void BarMeterMode_draw(Meter* this, int x, int y, int w) {
       // (Control against invalid values)
       nextOffset = CLAMP(nextOffset, 0, w);
       for (int j = offset; j < nextOffset; j++)
-         if (bar[j] == ' ') {
+         if (RichString_getCharVal(bar, startPos + j) == ' ') {
             if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
-               bar[j] = BarMeterMode_characters[i];
+               RichString_setChar(&bar, startPos + j, BarMeterMode_characters[i]);
             } else {
-               bar[j] = '|';
+               RichString_setChar(&bar, startPos + j, '|');
             }
          }
       offset = nextOffset;
@@ -316,17 +246,20 @@ static void BarMeterMode_draw(Meter* this, int x, int y, int w) {
 
    // ...then print the buffer.
    offset = 0;
-   for (int i = 0; i < items; i++) {
-      attrset(CRT_colors[Meter_attributes(this)[i]]);
-      mvaddnstr(y, x + offset, bar + offset, blockSizes[i]);
+   for (uint8_t i = 0; i < this->curItems; i++) {
+      int attr = this->curAttributes ? this->curAttributes[i] : Meter_attributes(this)[i];
+      RichString_setAttrn(&bar, CRT_colors[attr], startPos + offset, blockSizes[i]);
+      RichString_printoffnVal(bar, y, x + offset, startPos + offset, MINIMUM(blockSizes[i], w - offset));
       offset += blockSizes[i];
       offset = CLAMP(offset, 0, w);
    }
    if (offset < w) {
-      attrset(CRT_colors[BAR_SHADOW]);
-      mvaddnstr(y, x + offset, bar + offset, w - offset);
+      RichString_setAttrn(&bar, CRT_colors[BAR_SHADOW], startPos + offset, w - offset);
+      RichString_printoffnVal(bar, y, x + offset, startPos + offset, w - offset);
    }
 
+   RichString_delete(&bar);
+
    move(y, x + w + 1);
    attrset(CRT_colors[RESET_COLOR]);
 }
@@ -353,15 +286,17 @@ static const char* const GraphMeterMode_dotsAscii[] = {
    /*20*/":", /*21*/":", /*22*/":"
 };
 
-static const char* const* GraphMeterMode_dots;
-static int GraphMeterMode_pixPerRow;
-
 static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
+   const ProcessList* pl = this->pl;
 
-   if (!this->drawData) this->drawData = xCalloc(1, sizeof(GraphData));
-    GraphData* data = (GraphData*) this->drawData;
-   const int nValues = METER_BUFFER_LEN;
+   if (!this->drawData) {
+      this->drawData = xCalloc(1, sizeof(GraphData));
+   }
+   GraphData* data = this->drawData;
+   const int nValues = METER_GRAPHDATA_SIZE;
 
+   const char* const* GraphMeterMode_dots;
+   int GraphMeterMode_pixPerRow;
 #ifdef HAVE_LIBNCURSESW
    if (CRT_utf8) {
       GraphMeterMode_dots = GraphMeterMode_dotsUtf8;
@@ -373,41 +308,38 @@ static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
       GraphMeterMode_pixPerRow = PIXPERROW_ASCII;
    }
 
+   const char* caption = Meter_getCaption(this);
    attrset(CRT_colors[METER_TEXT]);
    int captionLen = 3;
-   mvaddnstr(y, x, this->caption, captionLen);
+   mvaddnstr(y, x, caption, captionLen);
    x += captionLen;
    w -= captionLen;
-   
-   struct timeval now;
-   gettimeofday(&now, NULL);
-   if (!timercmp(&now, &(data->time), <)) {
-      struct timeval delay = { .tv_sec = (int)(CRT_delay/10), .tv_usec = (CRT_delay-((int)(CRT_delay/10)*10)) * 100000 };
-      timeradd(&now, &delay, &(data->time));
+
+   if (!timercmp(&pl->realtime, &(data->time), <)) {
+      int globalDelay = this->pl->settings->delay;
+      struct timeval delay = { .tv_sec = globalDelay / 10, .tv_usec = (globalDelay % 10) * 100000L };
+      timeradd(&pl->realtime, &delay, &(data->time));
 
       for (int i = 0; i < nValues - 1; i++)
-         data->values[i] = data->values[i+1];
-   
-      char buffer[nValues];
-      Meter_updateValues(this, buffer, nValues - 1);
-   
+         data->values[i] = data->values[i + 1];
+
       double value = 0.0;
-      int items = Meter_getItems(this);
-      for (int i = 0; i < items; i++)
+      for (uint8_t i = 0; i < this->curItems; i++)
          value += this->values[i];
-      value /= this->total;
       data->values[nValues - 1] = value;
    }
-   
-   int i = nValues - (w*2) + 2, k = 0;
+
+   int i = nValues - (w * 2) + 2, k = 0;
    if (i < 0) {
-      k = -i/2;
+      k = -i / 2;
       i = 0;
    }
-   for (; i < nValues; i+=2, k++) {
+   for (; i < nValues - 1; i += 2, k++) {
       int pix = GraphMeterMode_pixPerRow * GRAPH_HEIGHT;
-      int v1 = CLAMP((int) lround(data->values[i] * pix), 1, pix);
-      int v2 = CLAMP((int) lround(data->values[i+1] * pix), 1, pix);
+      if (this->total < 1)
+         this->total = 1;
+      int v1 = CLAMP((int) lround(data->values[i] / this->total * pix), 1, pix);
+      int v2 = CLAMP((int) lround(data->values[i + 1] / this->total * pix), 1, pix);
 
       int colorIdx = GRAPH_1;
       for (int line = 0; line < GRAPH_HEIGHT; line++) {
@@ -415,7 +347,7 @@ static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
          int line2 = CLAMP(v2 - (GraphMeterMode_pixPerRow * (GRAPH_HEIGHT - 1 - line)), 0, GraphMeterMode_pixPerRow);
 
          attrset(CRT_colors[colorIdx]);
-         mvaddstr(y+line, x+k, GraphMeterMode_dots[line1 * (GraphMeterMode_pixPerRow + 1) + line2]);
+         mvaddstr(y + line, x + k, GraphMeterMode_dots[line1 * (GraphMeterMode_pixPerRow + 1) + line2]);
          colorIdx = GRAPH_2;
       }
    }
@@ -425,17 +357,17 @@ static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
 /* ---------- LEDMeterMode ---------- */
 
 static const char* const LEDMeterMode_digitsAscii[] = {
-   " __ ","    "," __ "," __ ","    "," __ "," __ "," __ "," __ "," __ ",
-   "|  |","   |"," __|"," __|","|__|","|__ ","|__ ","   |","|__|","|__|",
-   "|__|","   |","|__ "," __|","   |"," __|","|__|","   |","|__|"," __|"
+   " __ ", "    ", " __ ", " __ ", "    ", " __ ", " __ ", " __ ", " __ ", " __ ",
+   "|  |", "   |", " __|", " __|", "|__|", "|__ ", "|__ ", "   |", "|__|", "|__|",
+   "|__|", "   |", "|__ ", " __|", "   |", " __|", "|__|", "   |", "|__|", " __|"
 };
 
 #ifdef HAVE_LIBNCURSESW
 
 static const char* const LEDMeterMode_digitsUtf8[] = {
-   "┌──┐","  ┐ ","╶──┐","╶──┐","╷  ╷","┌──╴","┌──╴","╶──┐","┌──┐","┌──┐",
-   "│  │","  │ ","┌──┘"," ──┤","└──┤","└──┐","├──┐","   │","├──┤","└──┤",
-   "└──┘","  ╵ ","└──╴","╶──┘","   ╵","╶──┘","└──┘","   ╵","└──┘"," ──┘"
+   "┌──┐", "  ┐ ", "╶──┐", "╶──┐", "╷  ╷", "┌──╴", "┌──╴", "╶──┐", "┌──┐", "┌──┐",
+   "│  │", "  │ ", "┌──┘", " ──┤", "└──┤", "└──┐", "├──┐", "   │", "├──┤", "└──┤",
+   "└──┘", "  ╵ ", "└──╴", "╶──┘", "   ╵", "╶──┘", "└──┘", "   ╵", "└──┘", " ──┘"
 };
 
 #endif
@@ -444,12 +376,10 @@ static const char* const* LEDMeterMode_digits;
 
 static void LEDMeterMode_drawDigit(int x, int y, int n) {
    for (int i = 0; i < 3; i++)
-      mvaddstr(y+i, x, LEDMeterMode_digits[i * 10 + n]);
+      mvaddstr(y + i, x, LEDMeterMode_digits[i * 10 + n]);
 }
 
 static void LEDMeterMode_draw(Meter* this, int x, int y, int w) {
-   (void) w;
-
 #ifdef HAVE_LIBNCURSESW
    if (CRT_utf8)
       LEDMeterMode_digits = LEDMeterMode_digitsUtf8;
@@ -457,33 +387,41 @@ static void LEDMeterMode_draw(Meter* this, int x, int y, int w) {
 #endif
       LEDMeterMode_digits = LEDMeterMode_digitsAscii;
 
-   char buffer[METER_BUFFER_LEN];
-   Meter_updateValues(this, buffer, METER_BUFFER_LEN - 1);
-   
    RichString_begin(out);
-   Meter_displayBuffer(this, buffer, &out);
+   Meter_displayBuffer(this, &out);
 
    int yText =
 #ifdef HAVE_LIBNCURSESW
-      CRT_utf8 ? y+1 :
+      CRT_utf8 ? y + 1 :
 #endif
-      y+2;
+      y + 2;
    attrset(CRT_colors[LED_COLOR]);
-   mvaddstr(yText, x, this->caption);
-   int xx = x + strlen(this->caption);
+   const char* caption = Meter_getCaption(this);
+   mvaddstr(yText, x, caption);
+   int xx = x + strlen(caption);
    int len = RichString_sizeVal(out);
    for (int i = 0; i < len; i++) {
-      char c = RichString_getCharVal(out, i);
+      int c = RichString_getCharVal(out, i);
       if (c >= '0' && c <= '9') {
-         LEDMeterMode_drawDigit(xx, y, c-48);
+         if (xx - x + 4 > w)
+            break;
+
+         LEDMeterMode_drawDigit(xx, y, c - '0');
          xx += 4;
       } else {
+         if (xx - x + 1 > w)
+            break;
+#ifdef HAVE_LIBNCURSESW
+         const cchar_t wc = { .chars = { c, '\0' }, .attr = 0 }; /* use LED_COLOR from attrset() */
+         mvadd_wch(yText, xx, &wc);
+#else
          mvaddch(yText, xx, c);
+#endif
          xx += 1;
       }
    }
    attrset(CRT_colors[RESET_COLOR]);
-   RichString_end(out);
+   RichString_delete(&out);
 }
 
 static MeterMode BarMeterMode = {
@@ -510,7 +448,7 @@ static MeterMode LEDMeterMode = {
    .draw = LEDMeterMode_draw,
 };
 
-MeterMode* Meter_modes[] = {
+const MeterMode* const Meter_modes[] = {
    NULL,
    &BarMeterMode,
    &TextMeterMode,
@@ -521,20 +459,18 @@ MeterMode* Meter_modes[] = {
 
 /* Blank meter */
 
-static void BlankMeter_updateValues(Meter* this, char* buffer, int size) {
-   (void) this; (void) buffer; (void) size;
+static void BlankMeter_updateValues(Meter* this) {
+   this->txtBuffer[0] = '\0';
 }
 
-static void BlankMeter_display(Object* cast, RichString* out) {
-   (void) cast;
-   RichString_prune(out);
+static void BlankMeter_display(ATTR_UNUSED const Object* cast, ATTR_UNUSED RichString* out) {
 }
 
-int BlankMeter_attributes[] = {
+static const int BlankMeter_attributes[] = {
    DEFAULT_COLOR
 };
 
-MeterClass BlankMeter_class = {
+const MeterClass BlankMeter_class = {
    .super = {
       .extends = Class(Meter),
       .delete = Meter_delete,

Meter.h

@@ -1,51 +1,81 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Meter
 #define HEADER_Meter
 /*
 htop - Meter.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#define METER_BUFFER_LEN 256
-
-#define GRAPH_DELAY (DEFAULT_DELAY/2)
-
-#define GRAPH_HEIGHT 4 /* Unit: rows (lines) */
-
-#include "ListItem.h"
+#include "config.h" // IWYU pragma: keep
 
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
 #include <sys/time.h>
 
+#include "ListItem.h"
+#include "Object.h"
+#include "ProcessList.h"
+
+
+#define METER_TXTBUFFER_LEN 256
+#define METER_GRAPHDATA_SIZE 256
+
+#define METER_BUFFER_CHECK(buffer, size, written)          \
+   do {                                                    \
+      if ((written) < 0 || (size_t)(written) >= (size)) {  \
+         return;                                           \
+      }                                                    \
+      (buffer) += (written);                               \
+      (size) -= (size_t)(written);                         \
+   } while (0)
+
+#define METER_BUFFER_APPEND_CHR(buffer, size, c)           \
+   do {                                                    \
+      if ((size) < 2) {                                    \
+         return;                                           \
+      }                                                    \
+      *(buffer)++ = c;                                     \
+      *(buffer) = '\0';                                    \
+      (size)--;                                            \
+      if ((size) == 0) {                                   \
+         return;                                           \
+      }                                                    \
+   } while (0)
+
+
+struct Meter_;
 typedef struct Meter_ Meter;
 
 typedef void(*Meter_Init)(Meter*);
 typedef void(*Meter_Done)(Meter*);
 typedef void(*Meter_UpdateMode)(Meter*, int);
-typedef void(*Meter_UpdateValues)(Meter*, char*, int);
+typedef void(*Meter_UpdateValues)(Meter*);
 typedef void(*Meter_Draw)(Meter*, int, int, int);
+typedef const char* (*Meter_GetCaption)(const Meter*);
+typedef void(*Meter_GetUiName)(const Meter*, char*, size_t);
 
 typedef struct MeterClass_ {
-   ObjectClass super;
+   const ObjectClass super;
    const Meter_Init init;
    const Meter_Done done;
    const Meter_UpdateMode updateMode;
-   const Meter_Draw draw;
    const Meter_UpdateValues updateValues;
+   const Meter_Draw draw;
+   const Meter_GetCaption getCaption;
+   const Meter_GetUiName getUiName;
    const int defaultMode;
    const double total;
-   const int* attributes;
-   const char* name;
-   const char* uiName;
-   const char* caption;
-   const char* description;
-   const char maxItems;
-   char curItems;
+   const int* const attributes;
+   const char* const name;                 /* internal name of the meter, must not contain any space */
+   const char* const uiName;               /* display name in header setup menu */
+   const char* const caption;              /* prefix in the actual header */
+   const char* const description;          /* optional meter description in header setup menu */
+   const uint8_t maxItems;
 } MeterClass;
 
-#define As_Meter(this_)                ((MeterClass*)((this_)->super.klass))
+#define As_Meter(this_)                ((const MeterClass*)((this_)->super.klass))
 #define Meter_initFn(this_)            As_Meter(this_)->init
 #define Meter_init(this_)              As_Meter(this_)->init((Meter*)(this_))
 #define Meter_done(this_)              As_Meter(this_)->done((Meter*)(this_))
@@ -53,27 +83,38 @@ typedef struct MeterClass_ {
 #define Meter_updateMode(this_, m_)    As_Meter(this_)->updateMode((Meter*)(this_), m_)
 #define Meter_drawFn(this_)            As_Meter(this_)->draw
 #define Meter_doneFn(this_)            As_Meter(this_)->done
-#define Meter_updateValues(this_, buf_, sz_) \
-                                       As_Meter(this_)->updateValues((Meter*)(this_), buf_, sz_)
+#define Meter_updateValues(this_)      As_Meter(this_)->updateValues((Meter*)(this_))
+#define Meter_getUiNameFn(this_)       As_Meter(this_)->getUiName
+#define Meter_getUiName(this_,n_,l_)   As_Meter(this_)->getUiName((const Meter*)(this_),n_,l_)
+#define Meter_getCaptionFn(this_)      As_Meter(this_)->getCaption
+#define Meter_getCaption(this_)        (Meter_getCaptionFn(this_) ? As_Meter(this_)->getCaption((const Meter*)(this_)) : (this_)->caption)
 #define Meter_defaultMode(this_)       As_Meter(this_)->defaultMode
-#define Meter_getItems(this_)          As_Meter(this_)->curItems
-#define Meter_setItems(this_, n_)      As_Meter(this_)->curItems = (n_)
 #define Meter_attributes(this_)        As_Meter(this_)->attributes
 #define Meter_name(this_)              As_Meter(this_)->name
 #define Meter_uiName(this_)            As_Meter(this_)->uiName
 
+typedef struct GraphData_ {
+   struct timeval time;
+   double values[METER_GRAPHDATA_SIZE];
+} GraphData;
+
 struct Meter_ {
    Object super;
    Meter_Draw draw;
-   
+
    char* caption;
    int mode;
-   int param;
-   void* drawData;
+   unsigned int param;
+   GraphData* drawData;
    int h;
-   struct ProcessList_* pl;
+   int columnWidthCount;      /**< only used internally by the Header */
+   const ProcessList* pl;
+   uint8_t curItems;
+   const int* curAttributes;
+   char txtBuffer[METER_TXTBUFFER_LEN];
    double* values;
    double total;
+   void* meterData;
 };
 
 typedef struct MeterMode_ {
@@ -91,27 +132,11 @@ typedef enum {
    LAST_METERMODE
 } MeterModeId;
 
-typedef struct GraphData_ {
-   struct timeval time;
-   double values[METER_BUFFER_LEN];
-} GraphData;
+extern const MeterClass Meter_class;
 
+Meter* Meter_new(const ProcessList* pl, unsigned int param, const MeterClass* type);
 
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-#ifndef CLAMP
-#define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
-#endif
-
-extern MeterClass Meter_class;
-
-Meter* Meter_new(struct ProcessList_* pl, int param, MeterClass* type);
-
-int Meter_humanUnit(char* buffer, unsigned long int value, int size);
+int Meter_humanUnit(char* buffer, unsigned long int value, size_t size);
 
 void Meter_delete(Object* cast);
 
@@ -119,33 +144,10 @@ void Meter_setCaption(Meter* this, const char* caption);
 
 void Meter_setMode(Meter* this, int modeIndex);
 
-ListItem* Meter_toListItem(Meter* this, bool moving);
+ListItem* Meter_toListItem(const Meter* this, bool moving);
 
-/* ---------- TextMeterMode ---------- */
+extern const MeterMode* const Meter_modes[];
 
-/* ---------- BarMeterMode ---------- */
-
-/* ---------- GraphMeterMode ---------- */
-
-#ifdef HAVE_LIBNCURSESW
-
-#define PIXPERROW_UTF8 4
-#endif
-
-#define PIXPERROW_ASCII 2
-
-/* ---------- LEDMeterMode ---------- */
-
-#ifdef HAVE_LIBNCURSESW
-
-#endif
-
-extern MeterMode* Meter_modes[];
-
-/* Blank meter */
-
-extern int BlankMeter_attributes[];
-
-extern MeterClass BlankMeter_class;
+extern const MeterClass BlankMeter_class;
 
 #endif

MetersPanel.c

@@ -1,41 +1,28 @@
 /*
 htop - MetersPanel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "MetersPanel.h"
 
 #include <stdlib.h>
-#include <assert.h>
+
 #include "CRT.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "ListItem.h"
+#include "Meter.h"
+#include "Object.h"
+#include "ProvideCurses.h"
 
-/*{
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
-
-typedef struct MetersPanel_ MetersPanel;
-
-struct MetersPanel_ {
-   Panel super;
-
-   Settings* settings;
-   Vector* meters;
-   ScreenManager* scr;
-   MetersPanel* leftNeighbor;
-   MetersPanel* rightNeighbor;
-   bool moving;
-};
-
-}*/
 
 // Note: In code the meters are known to have bar/text/graph "Modes", but in UI
 // we call them "Styles".
-static const char* const MetersFunctions[] = {"Style ", "Move  ", "                                       ", "Delete", "Done  ", NULL};
-static const char* const MetersKeys[] = {"Space", "Enter", "  ", "Del", "F10"};
-static int MetersEvents[] = {' ', 13, ERR, KEY_DC, KEY_F(10)};
+static const char* const MetersFunctions[] = {"Style ", "Move  ", "                                         ", "Delete", "Done  ", NULL};
+static const char* const MetersKeys[] = {"Space", "Enter", "", "Del", "F10"};
+static const int MetersEvents[] = {' ', 13, ERR, KEY_DC, KEY_F(10)};
 
 // We avoid UTF-8 arrows ← → here as they might display full-width on Chinese
 // terminals, breaking our aligning.
@@ -43,9 +30,16 @@ static int MetersEvents[] = {' ', 13, ERR, KEY_DC, KEY_F(10)};
 // considered "Ambiguous characters".
 static const char* const MetersMovingFunctions[] = {"Style ", "Lock  ", "Up    ", "Down  ", "Left  ", "Right ", "       ", "Delete", "Done  ", NULL};
 static const char* const MetersMovingKeys[] = {"Space", "Enter", "Up", "Dn", "<-", "->", "  ", "Del", "F10"};
-static int MetersMovingEvents[] = {' ', 13, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, ERR, KEY_DC, KEY_F(10)};
+static const int MetersMovingEvents[] = {' ', 13, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, ERR, KEY_DC, KEY_F(10)};
 static FunctionBar* Meters_movingBar = NULL;
 
+void MetersPanel_cleanup() {
+   if (Meters_movingBar) {
+      FunctionBar_delete(Meters_movingBar);
+      Meters_movingBar = NULL;
+   }
+}
+
 static void MetersPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    MetersPanel* this = (MetersPanel*) object;
@@ -61,13 +55,12 @@ void MetersPanel_setMoving(MetersPanel* this, bool moving) {
       selected->moving = moving;
    }
    if (!moving) {
-      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+      Panel_setSelectionColor(super, PANEL_SELECTION_FOCUS);
       Panel_setDefaultBar(super);
    } else {
-      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOLLOW]);
+      Panel_setSelectionColor(super, PANEL_SELECTION_FOLLOW);
       super->currentBar = Meters_movingBar;
    }
-   FunctionBar_draw(this->super.currentBar, NULL);
 }
 
 static inline bool moveToNeighbor(MetersPanel* this, MetersPanel* neighbor, int selected) {
@@ -93,7 +86,7 @@ static inline bool moveToNeighbor(MetersPanel* this, MetersPanel* neighbor, int
 
 static HandlerResult MetersPanel_eventHandler(Panel* super, int ch) {
    MetersPanel* this = (MetersPanel*) super;
-   
+
    int selected = Panel_getSelectedIndex(super);
    HandlerResult result = IGNORED;
    bool sideMove = false;
@@ -189,16 +182,15 @@ static HandlerResult MetersPanel_eventHandler(Panel* super, int ch) {
       }
    }
    if (result == HANDLED || sideMove) {
-      Header* header = (Header*) this->scr->header;
+      Header* header = this->scr->header;
       this->settings->changed = true;
       Header_calculateHeight(header);
-      Header_draw(header);
-      ScreenManager_resize(this->scr, this->scr->x1, header->height, this->scr->x2, this->scr->y2);
+      ScreenManager_resize(this->scr);
    }
    return result;
 }
 
-PanelClass MetersPanel_class = {
+const PanelClass MetersPanel_class = {
    .super = {
       .extends = Class(Panel),
       .delete = MetersPanel_delete
@@ -223,7 +215,7 @@ MetersPanel* MetersPanel_new(Settings* settings, const char* header, Vector* met
    this->leftNeighbor = NULL;
    Panel_setHeader(super, header);
    for (int i = 0; i < Vector_size(meters); i++) {
-      Meter* meter = (Meter*) Vector_get(meters, i);
+      const Meter* meter = (const Meter*) Vector_get(meters, i);
       Panel_add(super, (Object*) Meter_toListItem(meter, false));
    }
    return this;

MetersPanel.h

@@ -1,18 +1,21 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_MetersPanel
 #define HEADER_MetersPanel
 /*
 htop - MetersPanel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include <stdbool.h>
 
+#include "Panel.h"
+#include "ScreenManager.h"
+#include "Settings.h"
+#include "Vector.h"
+
+
+struct MetersPanel_;
 typedef struct MetersPanel_ MetersPanel;
 
 struct MetersPanel_ {
@@ -26,17 +29,11 @@ struct MetersPanel_ {
    bool moving;
 };
 
-
-// Note: In code the meters are known to have bar/text/graph "Modes", but in UI
-// we call them "Styles".
-// We avoid UTF-8 arrows ← → here as they might display full-width on Chinese
-// terminals, breaking our aligning.
-// In <http://unicode.org/reports/tr11/>, arrows (U+2019..U+2199) are
-// considered "Ambiguous characters".
+void MetersPanel_cleanup(void);
 
 void MetersPanel_setMoving(MetersPanel* this, bool moving);
 
-extern PanelClass MetersPanel_class;
+extern const PanelClass MetersPanel_class;
 
 MetersPanel* MetersPanel_new(Settings* settings, const char* header, Vector* meters, ScreenManager* scr);
 

NEWS

@@ -2,4 +2,3 @@
 See the commit history for news of the past.
 See the bug tracker for news of the future.
 Run the program for news of the present.
-

NetworkIOMeter.c

@@ -0,0 +1,137 @@
+#include "NetworkIOMeter.h"
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.h"
+#include "Process.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+static const int NetworkIOMeter_attributes[] = {
+   METER_VALUE_IOREAD,
+   METER_VALUE_IOWRITE,
+};
+
+static bool hasData = false;
+
+static uint32_t cached_rxb_diff;
+static uint32_t cached_rxp_diff;
+static uint32_t cached_txb_diff;
+static uint32_t cached_txp_diff;
+
+static void NetworkIOMeter_updateValues(Meter* this) {
+   const ProcessList* pl = this->pl;
+   static uint64_t cached_last_update = 0;
+
+   uint64_t passedTimeInMs = pl->realtimeMs - cached_last_update;
+
+   /* update only every 500ms */
+   if (passedTimeInMs > 500) {
+      static uint64_t cached_rxb_total;
+      static uint64_t cached_rxp_total;
+      static uint64_t cached_txb_total;
+      static uint64_t cached_txp_total;
+      uint64_t diff;
+
+      cached_last_update = pl->realtimeMs;
+
+      NetworkIOData data;
+      hasData = Platform_getNetworkIO(&data);
+      if (!hasData) {
+         xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "no data");
+         return;
+      }
+
+      if (data.bytesReceived > cached_rxb_total) {
+         diff = data.bytesReceived - cached_rxb_total;
+         diff /= ONE_K; /* Meter_humanUnit() expects unit in kilo */
+         diff = (1000 * diff) / passedTimeInMs; /* convert to per second */
+         cached_rxb_diff = (uint32_t)diff;
+      } else {
+         cached_rxb_diff = 0;
+      }
+      cached_rxb_total = data.bytesReceived;
+
+      if (data.packetsReceived > cached_rxp_total) {
+         diff = data.packetsReceived - cached_rxp_total;
+         cached_rxp_diff = (uint32_t)diff;
+      } else {
+         cached_rxp_diff = 0;
+      }
+      cached_rxp_total = data.packetsReceived;
+
+      if (data.bytesTransmitted > cached_txb_total) {
+         diff = data.bytesTransmitted - cached_txb_total;
+         diff /= ONE_K; /* Meter_humanUnit() expects unit in kilo */
+         diff = (1000 * diff) / passedTimeInMs; /* convert to per second */
+         cached_txb_diff = (uint32_t)diff;
+      } else {
+         cached_txb_diff = 0;
+      }
+      cached_txb_total = data.bytesTransmitted;
+
+      if (data.packetsTransmitted > cached_txp_total) {
+         diff = data.packetsTransmitted - cached_txp_total;
+         cached_txp_diff = (uint32_t)diff;
+      } else {
+         cached_txp_diff = 0;
+      }
+      cached_txp_total = data.packetsTransmitted;
+   }
+
+   this->values[0] = cached_rxb_diff;
+   this->values[1] = cached_txb_diff;
+   if (cached_rxb_diff + cached_txb_diff > this->total) {
+      this->total = cached_rxb_diff + cached_txb_diff;
+   }
+
+   char bufferBytesReceived[12], bufferBytesTransmitted[12];
+   Meter_humanUnit(bufferBytesReceived, cached_rxb_diff, sizeof(bufferBytesReceived));
+   Meter_humanUnit(bufferBytesTransmitted, cached_txb_diff, sizeof(bufferBytesTransmitted));
+   xSnprintf(this->txtBuffer, sizeof(this->txtBuffer), "rx:%siB/s tx:%siB/s", bufferBytesReceived, bufferBytesTransmitted);
+}
+
+static void NetworkIOMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
+   if (!hasData) {
+      RichString_writeAscii(out, CRT_colors[METER_VALUE_ERROR], "no data");
+      return;
+   }
+
+   char buffer[64];
+   int len;
+
+   RichString_writeAscii(out, CRT_colors[METER_TEXT], "rx: ");
+   Meter_humanUnit(buffer, cached_rxb_diff, sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOREAD], buffer);
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOREAD], "iB/s");
+
+   RichString_appendAscii(out, CRT_colors[METER_TEXT], " tx: ");
+   Meter_humanUnit(buffer, cached_txb_diff, sizeof(buffer));
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOWRITE], buffer);
+   RichString_appendAscii(out, CRT_colors[METER_VALUE_IOWRITE], "iB/s");
+
+   len = xSnprintf(buffer, sizeof(buffer), " (%u/%u packets) ", cached_rxp_diff, cached_txp_diff);
+   RichString_appendnAscii(out, CRT_colors[METER_TEXT], buffer, len);
+}
+
+const MeterClass NetworkIOMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = NetworkIOMeter_display
+   },
+   .updateValues = NetworkIOMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 2,
+   .total = 100.0,
+   .attributes = NetworkIOMeter_attributes,
+   .name = "NetworkIO",
+   .uiName = "Network IO",
+   .caption = "Network: "
+};

NetworkIOMeter.h

@@ -0,0 +1,16 @@
+#ifndef HEADER_NetworkIOMeter
+#define HEADER_NetworkIOMeter
+
+#include "Meter.h"
+
+
+typedef struct NetworkIOData_ {
+   uint64_t bytesReceived;
+   uint64_t packetsReceived;
+   uint64_t bytesTransmitted;
+   uint64_t packetsTransmitted;
+} NetworkIOData;
+
+extern const MeterClass NetworkIOMeter_class;
+
+#endif /* HEADER_NetworkIOMeter */

Object.c

@@ -1,63 +1,29 @@
 /*
 htop - Object.c
 (C) 2004-2012 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Object.h"
 
-/*{
-#include "RichString.h"
-#include "XAlloc.h"
+#include <stddef.h>
 
-typedef struct Object_ Object;
 
-typedef void(*Object_Display)(Object*, RichString*);
-typedef long(*Object_Compare)(const void*, const void*);
-typedef void(*Object_Delete)(Object*);
-
-#define Object_getClass(obj_)         ((Object*)(obj_))->klass
-#define Object_setClass(obj_, class_) Object_getClass(obj_) = (ObjectClass*) class_
-
-#define Object_delete(obj_)           Object_getClass(obj_)->delete((Object*)(obj_))
-#define Object_displayFn(obj_)        Object_getClass(obj_)->display
-#define Object_display(obj_, str_)    Object_getClass(obj_)->display((Object*)(obj_), str_)
-#define Object_compare(obj_, other_)  Object_getClass(obj_)->compare((const void*)(obj_), other_)
-
-#define Class(class_)                 ((ObjectClass*)(&(class_ ## _class)))
-
-#define AllocThis(class_) (class_*) xMalloc(sizeof(class_)); Object_setClass(this, Class(class_));
- 
-typedef struct ObjectClass_ {
-   const void* extends;
-   const Object_Display display;
-   const Object_Delete delete;
-   const Object_Compare compare;
-} ObjectClass;
-
-struct Object_ {
-   ObjectClass* klass;
-};
-
-}*/
-
-ObjectClass Object_class = {
+const ObjectClass Object_class = {
    .extends = NULL
 };
 
-#ifdef DEBUG
-
-bool Object_isA(Object* o, const ObjectClass* klass) {
+bool Object_isA(const Object* o, const ObjectClass* klass) {
    if (!o)
       return false;
-   const ObjectClass* type = o->klass;
-   while (type) {
-      if (type == klass)
+
+   for (const ObjectClass* type = o->klass; type; type = type->extends) {
+      if (type == klass) {
          return true;
-      type = type->extends;
+      }
    }
+
    return false;
 }
-
-#endif

Object.h

@@ -1,53 +1,59 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Object
 #define HEADER_Object
 /*
 htop - Object.h
 (C) 2004-2012 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "RichString.h"
-#include "XAlloc.h"
+#include "config.h" // IWYU pragma: keep
 
+#include <assert.h>
+#include <stdbool.h>
+
+#include "RichString.h"
+#include "XUtils.h" // IWYU pragma: keep
+
+
+struct Object_;
 typedef struct Object_ Object;
 
-typedef void(*Object_Display)(Object*, RichString*);
-typedef long(*Object_Compare)(const void*, const void*);
+typedef void(*Object_Display)(const Object*, RichString*);
+typedef int(*Object_Compare)(const void*, const void*);
 typedef void(*Object_Delete)(Object*);
 
-#define Object_getClass(obj_)         ((Object*)(obj_))->klass
-#define Object_setClass(obj_, class_) Object_getClass(obj_) = (ObjectClass*) class_
+#define Object_getClass(obj_)         ((const Object*)(obj_))->klass
+#define Object_setClass(obj_, class_) (((Object*)(obj_))->klass = (const ObjectClass*) (class_))
 
-#define Object_delete(obj_)           Object_getClass(obj_)->delete((Object*)(obj_))
+#define Object_delete(obj_)           (assert(Object_getClass(obj_)->delete), Object_getClass(obj_)->delete((Object*)(obj_)))
 #define Object_displayFn(obj_)        Object_getClass(obj_)->display
-#define Object_display(obj_, str_)    Object_getClass(obj_)->display((Object*)(obj_), str_)
-#define Object_compare(obj_, other_)  Object_getClass(obj_)->compare((const void*)(obj_), other_)
+#define Object_display(obj_, str_)    (assert(Object_getClass(obj_)->display), Object_getClass(obj_)->display((const Object*)(obj_), str_))
+#define Object_compare(obj_, other_)  (assert(Object_getClass(obj_)->compare), Object_getClass(obj_)->compare((const void*)(obj_), other_))
 
-#define Class(class_)                 ((ObjectClass*)(&(class_ ## _class)))
+#define Class(class_)                 ((const ObjectClass*)(&(class_ ## _class)))
+
+#define AllocThis(class_) (class_*)   xMalloc(sizeof(class_)); Object_setClass(this, Class(class_))
 
-#define AllocThis(class_) (class_*) xMalloc(sizeof(class_)); Object_setClass(this, Class(class_));
- 
 typedef struct ObjectClass_ {
-   const void* extends;
+   const void* const extends;
    const Object_Display display;
    const Object_Delete delete;
    const Object_Compare compare;
 } ObjectClass;
 
 struct Object_ {
-   ObjectClass* klass;
+   const ObjectClass* klass;
 };
 
+typedef union {
+   int i;
+   void* v;
+} Arg;
 
-extern ObjectClass Object_class;
+extern const ObjectClass Object_class;
 
-#ifdef DEBUG
-
-bool Object_isA(Object* o, const ObjectClass* klass);
-
-#endif
+bool Object_isA(const Object* o, const ObjectClass* klass);
 
 #endif

OpenFilesScreen.c

@@ -1,33 +1,31 @@
 /*
 htop - OpenFilesScreen.c
 (C) 2005-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h" // IWYU pragma: keep
+
 #include "OpenFilesScreen.h"
 
-#include "CRT.h"
-#include "ProcessList.h"
-#include "IncSet.h"
-#include "StringUtils.h"
-#include "FunctionBar.h"
-
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdbool.h>
-#include <unistd.h>
-#include <stdlib.h>
 #include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 
-/*{
-#include "InfoScreen.h"
+#include "Macros.h"
+#include "Panel.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
+
 
 typedef struct OpenFiles_Data_ {
-   char* data[256];
+   char* data[7];
 } OpenFiles_Data;
 
 typedef struct OpenFiles_ProcessData_ {
@@ -41,49 +39,93 @@ typedef struct OpenFiles_FileData_ {
    struct OpenFiles_FileData_* next;
 } OpenFiles_FileData;
 
-typedef struct OpenFilesScreen_ {
-   InfoScreen super;
-   pid_t pid;
-} OpenFilesScreen;
+static size_t getIndexForType(char type) {
+   switch (type) {
+   case 'f':
+      return 0;
+   case 'a':
+      return 1;
+   case 'D':
+      return 2;
+   case 'i':
+      return 3;
+   case 'n':
+      return 4;
+   case 's':
+      return 5;
+   case 't':
+      return 6;
+   }
 
-}*/
+   /* should never reach here */
+   abort();
+}
 
-InfoScreenClass OpenFilesScreen_class = {
-   .super = {
-      .extends = Class(Object),
-      .delete = OpenFilesScreen_delete
-   },
-   .scan = OpenFilesScreen_scan,
-   .draw = OpenFilesScreen_draw
-};
+static const char* getDataForType(const OpenFiles_Data* data, char type) {
+   size_t index = getIndexForType(type);
+   return data->data[index] ? data->data[index] : "";
+}
 
-OpenFilesScreen* OpenFilesScreen_new(Process* process) {
+OpenFilesScreen* OpenFilesScreen_new(const Process* process) {
    OpenFilesScreen* this = xMalloc(sizeof(OpenFilesScreen));
    Object_setClass(this, Class(OpenFilesScreen));
-   if (Process_isThread(process))
+   if (Process_isThread(process)) {
       this->pid = process->tgid;
-   else
+   } else {
       this->pid = process->pid;
-   return (OpenFilesScreen*) InfoScreen_init(&this->super, process, NULL, LINES-3, "   FD TYPE     DEVICE       SIZE       NODE NAME");
+   }
+   return (OpenFilesScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 2, "   FD TYPE    MODE DEVICE           SIZE       NODE  NAME");
 }
 
 void OpenFilesScreen_delete(Object* this) {
    free(InfoScreen_done((InfoScreen*)this));
 }
 
-void OpenFilesScreen_draw(InfoScreen* this) {
-   InfoScreen_drawTitled(this, "Snapshot of files open in process %d - %s", ((OpenFilesScreen*)this)->pid, this->process->comm);
+static void OpenFilesScreen_draw(InfoScreen* this) {
+   InfoScreen_drawTitled(this, "Snapshot of files open in process %d - %s", ((OpenFilesScreen*)this)->pid, Process_getCommand(this->process));
 }
 
 static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
-   char command[1025];
-   xSnprintf(command, 1024, "lsof -P -p %d -F 2> /dev/null", pid);
-   FILE* fd = popen(command, "r");
    OpenFiles_ProcessData* pdata = xCalloc(1, sizeof(OpenFiles_ProcessData));
-   OpenFiles_FileData* fdata = NULL;
+
+   int fdpair[2] = {0, 0};
+   if (pipe(fdpair) == -1) {
+      pdata->error = 1;
+      return pdata;
+   }
+
+   pid_t child = fork();
+   if (child == -1) {
+      close(fdpair[1]);
+      close(fdpair[0]);
+      pdata->error = 1;
+      return pdata;
+   }
+
+   if (child == 0) {
+      close(fdpair[0]);
+      dup2(fdpair[1], STDOUT_FILENO);
+      close(fdpair[1]);
+      int fdnull = open("/dev/null", O_WRONLY);
+      if (fdnull < 0) {
+         exit(1);
+      }
+
+      dup2(fdnull, STDERR_FILENO);
+      close(fdnull);
+      char buffer[32] = {0};
+      xSnprintf(buffer, sizeof(buffer), "%d", pid);
+      execlp("lsof", "lsof", "-P", "-p", buffer, "-F", NULL);
+      exit(127);
+   }
+   close(fdpair[1]);
+
    OpenFiles_Data* item = &(pdata->data);
+   OpenFiles_FileData* fdata = NULL;
+
+   FILE* fd = fdopen(fdpair[0], "r");
    if (!fd) {
-      pdata->error = 127;
+      pdata->error = 1;
       return pdata;
    }
    for (;;) {
@@ -91,8 +133,11 @@ static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
       if (!line) {
          break;
       }
+
       unsigned char cmd = line[0];
-      if (cmd == 'f') {
+      switch (cmd) {
+      case 'f':  /* file descriptor */
+      {
          OpenFiles_FileData* nextFile = xCalloc(1, sizeof(OpenFiles_FileData));
          if (fdata == NULL) {
             pdata->files = nextFile;
@@ -101,21 +146,60 @@ static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
          }
          fdata = nextFile;
          item = &(fdata->data);
+      } /* FALLTHRU */
+      case 'a':  /* file access mode */
+      case 'D':  /* file's major/minor device number */
+      case 'i':  /* file's inode number */
+      case 'n':  /* file name, comment, Internet address */
+      case 's':  /* file's size */
+      case 't':  /* file's type */
+      {
+         size_t index = getIndexForType(cmd);
+         free(item->data[index]);
+         item->data[index] = xStrdup(line + 1);
+         break;
+      }
+      case 'c':  /* process command name  */
+      case 'd':  /* file's device character code */
+      case 'g':  /* process group ID */
+      case 'G':  /* file flags */
+      case 'k':  /* link count */
+      case 'l':  /* file's lock status */
+      case 'L':  /* process login name */
+      case 'o':  /* file's offset */
+      case 'p':  /* process ID */
+      case 'P':  /* protocol name */
+      case 'R':  /* parent process ID */
+      case 'T':  /* TCP/TPI information, identified by prefixes */
+      case 'u':  /* process user ID */
+         /* ignore */
+         break;
       }
-      item->data[cmd] = xStrdup(line + 1);
       free(line);
    }
-   pdata->error = pclose(fd);
+   fclose(fd);
+
+   int wstatus;
+   if (waitpid(child, &wstatus, 0) == -1) {
+      pdata->error = 1;
+      return pdata;
+   }
+
+   if (!WIFEXITED(wstatus)) {
+      pdata->error = 1;
+   } else {
+      pdata->error = WEXITSTATUS(wstatus);
+   }
+
    return pdata;
 }
 
-static inline void OpenFiles_Data_clear(OpenFiles_Data* data) {
-   for (int i = 0; i < 255; i++)
-      if (data->data[i])
-         free(data->data[i]);
+static void OpenFiles_Data_clear(OpenFiles_Data* data) {
+   for (size_t i = 0; i < ARRAYSIZE(data->data); i++)
+      free(data->data[i]);
 }
 
-void OpenFilesScreen_scan(InfoScreen* this) {
+static void OpenFilesScreen_scan(InfoScreen* this) {
    Panel* panel = this->display;
    int idx = Panel_getSelectedIndex(panel);
    Panel_prune(panel);
@@ -127,19 +211,20 @@ void OpenFilesScreen_scan(InfoScreen* this) {
    } else {
       OpenFiles_FileData* fdata = pdata->files;
       while (fdata) {
-         char** data = fdata->data.data;
-         int lenN = data['n'] ? strlen(data['n']) : 0;
-         int sizeEntry = 5 + 7 + 10 + 10 + 10 + lenN + 5 /*spaces*/ + 1 /*null*/;
-         char* entry = xMalloc(sizeEntry);
-         xSnprintf(entry, sizeEntry, "%5.5s %7.7s %10.10s %10.10s %10.10s %s",
-            data['f'] ? data['f'] : "",
-            data['t'] ? data['t'] : "",
-            data['D'] ? data['D'] : "",
-            data['s'] ? data['s'] : "",
-            data['i'] ? data['i'] : "",
-            data['n'] ? data['n'] : "");
+         OpenFiles_Data* data = &fdata->data;
+         size_t lenN = strlen(getDataForType(data, 'n'));
+         size_t sizeEntry = 5 + 7 + 4 + 10 + 10 + 10 + lenN + 7 /*spaces*/ + 1 /*null*/;
+         char entry[sizeEntry];
+         xSnprintf(entry, sizeof(entry), "%5.5s %-7.7s %-4.4s %-10.10s %10.10s %10.10s  %s",
+                   getDataForType(data, 'f'),
+                   getDataForType(data, 't'),
+                   getDataForType(data, 'a'),
+                   getDataForType(data, 'D'),
+                   getDataForType(data, 's'),
+                   getDataForType(data, 'i'),
+                   getDataForType(data, 'n'));
          InfoScreen_addLine(this, entry);
-         OpenFiles_Data_clear(&fdata->data);
+         OpenFiles_Data_clear(data);
          OpenFiles_FileData* old = fdata;
          fdata = fdata->next;
          free(old);
@@ -151,3 +236,12 @@ void OpenFilesScreen_scan(InfoScreen* this) {
    Vector_insertionSort(panel->items);
    Panel_setSelected(panel, idx);
 }
+
+const InfoScreenClass OpenFilesScreen_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = OpenFilesScreen_delete
+   },
+   .scan = OpenFilesScreen_scan,
+   .draw = OpenFilesScreen_draw
+};

OpenFilesScreen.h

@@ -1,45 +1,28 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_OpenFilesScreen
 #define HEADER_OpenFilesScreen
 /*
 htop - OpenFilesScreen.h
 (C) 2005-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <sys/types.h>
+
 #include "InfoScreen.h"
+#include "Object.h"
+#include "Process.h"
 
-typedef struct OpenFiles_Data_ {
-   char* data[256];
-} OpenFiles_Data;
-
-typedef struct OpenFiles_ProcessData_ {
-   OpenFiles_Data data;
-   int error;
-   struct OpenFiles_FileData_* files;
-} OpenFiles_ProcessData;
-
-typedef struct OpenFiles_FileData_ {
-   OpenFiles_Data data;
-   struct OpenFiles_FileData_* next;
-} OpenFiles_FileData;
 
 typedef struct OpenFilesScreen_ {
    InfoScreen super;
    pid_t pid;
 } OpenFilesScreen;
 
+extern const InfoScreenClass OpenFilesScreen_class;
 
-extern InfoScreenClass OpenFilesScreen_class;
-
-OpenFilesScreen* OpenFilesScreen_new(Process* process);
+OpenFilesScreen* OpenFilesScreen_new(const Process* process);
 
 void OpenFilesScreen_delete(Object* this);
 
-void OpenFilesScreen_draw(InfoScreen* this);
-
-void OpenFilesScreen_scan(InfoScreen* this);
-
 #endif

OptionItem.c

@@ -0,0 +1,191 @@
+/*
+htop - OptionItem.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "OptionItem.h"
+
+#include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+static void OptionItem_delete(Object* cast) {
+   OptionItem* this = (OptionItem*)cast;
+   assert (this != NULL);
+
+   free(this->text);
+   free(this);
+}
+
+static void CheckItem_display(const Object* cast, RichString* out) {
+   const CheckItem* this = (const CheckItem*)cast;
+   assert (this != NULL);
+
+   RichString_writeAscii(out, CRT_colors[CHECK_BOX], "[");
+   if (CheckItem_get(this)) {
+      RichString_appendAscii(out, CRT_colors[CHECK_MARK], "x");
+   } else {
+      RichString_appendAscii(out, CRT_colors[CHECK_MARK], " ");
+   }
+   RichString_appendAscii(out, CRT_colors[CHECK_BOX], "]    ");
+   RichString_appendWide(out, CRT_colors[CHECK_TEXT], this->super.text);
+}
+
+static void NumberItem_display(const Object* cast, RichString* out) {
+   const NumberItem* this = (const NumberItem*)cast;
+   assert (this != NULL);
+
+   char buffer[12];
+   RichString_writeAscii(out, CRT_colors[CHECK_BOX], "[");
+   int written;
+   if (this->scale < 0) {
+      written = xSnprintf(buffer, sizeof(buffer), "%.*f", -this->scale, pow(10, this->scale) * NumberItem_get(this));
+   } else if (this->scale > 0) {
+      written = xSnprintf(buffer, sizeof(buffer), "%d", (int) (pow(10, this->scale) * NumberItem_get(this)));
+   } else {
+      written = xSnprintf(buffer, sizeof(buffer), "%d", NumberItem_get(this));
+   }
+   RichString_appendnAscii(out, CRT_colors[CHECK_MARK], buffer, written);
+   RichString_appendAscii(out, CRT_colors[CHECK_BOX], "]");
+   for (int i = written; i < 5; i++) {
+      RichString_appendAscii(out, CRT_colors[CHECK_BOX], " ");
+   }
+   RichString_appendWide(out, CRT_colors[CHECK_TEXT], this->super.text);
+}
+
+const OptionItemClass OptionItem_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = OptionItem_delete
+   }
+};
+
+const OptionItemClass CheckItem_class = {
+   .super = {
+      .extends = Class(OptionItem),
+      .delete = OptionItem_delete,
+      .display = CheckItem_display
+   },
+   .kind = OPTION_ITEM_CHECK
+};
+
+const OptionItemClass NumberItem_class = {
+   .super = {
+      .extends = Class(OptionItem),
+      .delete = OptionItem_delete,
+      .display = NumberItem_display
+   },
+   .kind = OPTION_ITEM_NUMBER
+};
+
+CheckItem* CheckItem_newByRef(const char* text, bool* ref) {
+   CheckItem* this = AllocThis(CheckItem);
+   this->super.text = xStrdup(text);
+   this->value = false;
+   this->ref = ref;
+   return this;
+}
+
+CheckItem* CheckItem_newByVal(const char* text, bool value) {
+   CheckItem* this = AllocThis(CheckItem);
+   this->super.text = xStrdup(text);
+   this->value = value;
+   this->ref = NULL;
+   return this;
+}
+
+bool CheckItem_get(const CheckItem* this) {
+   if (this->ref) {
+      return *(this->ref);
+   } else {
+      return this->value;
+   }
+}
+
+void CheckItem_set(CheckItem* this, bool value) {
+   if (this->ref) {
+      *(this->ref) = value;
+   } else {
+      this->value = value;
+   }
+}
+
+void CheckItem_toggle(CheckItem* this) {
+   if (this->ref) {
+      *(this->ref) = !*(this->ref);
+   } else {
+      this->value = !this->value;
+   }
+}
+
+NumberItem* NumberItem_newByRef(const char* text, int* ref, int scale, int min, int max) {
+   assert(min <= max);
+
+   NumberItem* this = AllocThis(NumberItem);
+   this->super.text = xStrdup(text);
+   this->value = 0;
+   this->ref = ref;
+   this->scale = scale;
+   this->min = min;
+   this->max = max;
+   return this;
+}
+
+NumberItem* NumberItem_newByVal(const char* text, int value, int scale, int min, int max) {
+   assert(min <= max);
+
+   NumberItem* this = AllocThis(NumberItem);
+   this->super.text = xStrdup(text);
+   this->value = CLAMP(value, min, max);
+   this->ref = NULL;
+   this->scale = scale;
+   this->min = min;
+   this->max = max;
+   return this;
+}
+
+int NumberItem_get(const NumberItem* this) {
+   if (this->ref) {
+      return *(this->ref);
+   } else {
+      return this->value;
+   }
+}
+
+void NumberItem_decrease(NumberItem* this) {
+   if (this->ref) {
+      *(this->ref) = CLAMP(*(this->ref) - 1, this->min, this->max);
+   } else {
+      this->value = CLAMP(this->value - 1, this->min, this->max);
+   }
+}
+
+void NumberItem_increase(NumberItem* this) {
+   if (this->ref) {
+      *(this->ref) = CLAMP(*(this->ref) + 1, this->min, this->max);
+   } else {
+      this->value = CLAMP(this->value + 1, this->min, this->max);
+   }
+}
+
+void NumberItem_toggle(NumberItem* this) {
+   if (this->ref) {
+      if (*(this->ref) >= this->max)
+         *(this->ref) = this->min;
+      else
+         *(this->ref) += 1;
+   } else {
+      if (this->value >= this->max)
+         this->value = this->min;
+      else
+         this->value += 1;
+   }
+}

OptionItem.h

@@ -0,0 +1,70 @@
+#ifndef HEADER_OptionItem
+#define HEADER_OptionItem
+/*
+htop - OptionItem.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <stdbool.h>
+
+#include "Object.h"
+
+
+enum OptionItemType {
+   OPTION_ITEM_CHECK,
+   OPTION_ITEM_NUMBER,
+};
+
+typedef struct OptionItemClass_ {
+   const ObjectClass super;
+
+   enum OptionItemType kind;
+} OptionItemClass;
+
+#define As_OptionItem(this_)                ((const OptionItemClass*)((this_)->super.klass))
+#define OptionItem_kind(this_)              As_OptionItem(this_)->kind
+
+typedef struct OptionItem_ {
+   Object super;
+
+   char* text;
+} OptionItem;
+
+typedef struct CheckItem_ {
+   OptionItem super;
+
+   bool* ref;
+   bool value;
+} CheckItem;
+
+typedef struct NumberItem_ {
+   OptionItem super;
+
+   char* text;
+   int* ref;
+   int value;
+   int scale;
+   int min;
+   int max;
+} NumberItem;
+
+extern const OptionItemClass OptionItem_class;
+extern const OptionItemClass CheckItem_class;
+extern const OptionItemClass NumberItem_class;
+
+CheckItem* CheckItem_newByRef(const char* text, bool* ref);
+CheckItem* CheckItem_newByVal(const char* text, bool value);
+bool CheckItem_get(const CheckItem* this);
+void CheckItem_set(CheckItem* this, bool value);
+void CheckItem_toggle(CheckItem* this);
+
+NumberItem* NumberItem_newByRef(const char* text, int* ref, int scale, int min, int max);
+NumberItem* NumberItem_newByVal(const char* text, int value, int scale, int min, int max);
+int NumberItem_get(const NumberItem* this);
+void NumberItem_decrease(NumberItem* this);
+void NumberItem_increase(NumberItem* this);
+void NumberItem_toggle(NumberItem* this);
+
+#endif

Panel.c

@@ -1,91 +1,28 @@
 /*
 htop - Panel.c
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Panel.h"
 
-#include "CRT.h"
-#include "RichString.h"
-#include "ListItem.h"
-#include "StringUtils.h"
-
-#include <math.h>
+#include <assert.h>
+#include <ctype.h>
 #include <stdbool.h>
 #include <stdlib.h>
-#include <ctype.h>
 #include <string.h>
-#include <assert.h>
+#include <strings.h>
 
-//#link curses
+#include "CRT.h"
+#include "ListItem.h"
+#include "Macros.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-/*{
-#include "Object.h"
-#include "Vector.h"
-#include "FunctionBar.h"
 
-typedef struct Panel_ Panel;
-
-typedef enum HandlerResult_ {
-   HANDLED     = 0x01,
-   IGNORED     = 0x02,
-   BREAK_LOOP  = 0x04,
-   REDRAW      = 0x08,
-   RESCAN      = 0x10,
-   SYNTH_KEY   = 0x20,
-} HandlerResult;
-
-#define EVENT_SET_SELECTED -1
-
-#define EVENT_HEADER_CLICK(x_) (-10000 + x_)
-#define EVENT_IS_HEADER_CLICK(ev_) (ev_ >= -10000 && ev_ <= -9000)
-#define EVENT_HEADER_CLICK_GET_X(ev_) (ev_ + 10000)
-
-typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
-
-typedef struct PanelClass_ {
-   const ObjectClass super;
-   const Panel_EventHandler eventHandler;
-} PanelClass;
-
-#define As_Panel(this_)                ((PanelClass*)((this_)->super.klass))
-#define Panel_eventHandlerFn(this_)    As_Panel(this_)->eventHandler
-#define Panel_eventHandler(this_, ev_) As_Panel(this_)->eventHandler((Panel*)(this_), ev_)
-
-struct Panel_ {
-   Object super;
-   int x, y, w, h;
-   WINDOW* window;
-   Vector* items;
-   int selected;
-   int oldSelected;
-   int selectedLen;
-   void* eventHandlerState;
-   int scrollV;
-   short scrollH;
-   bool needsRedraw;
-   FunctionBar* currentBar;
-   FunctionBar* defaultBar;
-   RichString header;
-   int selectionColor;
-};
-
-#define Panel_setDefaultBar(this_) do{ (this_)->currentBar = (this_)->defaultBar; }while(0)
-
-}*/
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-#define KEY_CTRL(l) ((l)-'A'+1)
-
-PanelClass Panel_class = {
+const PanelClass Panel_class = {
    .super = {
       .extends = Class(Object),
       .delete = Panel_delete
@@ -93,7 +30,7 @@ PanelClass Panel_class = {
    .eventHandler = Panel_selectByTyping,
 };
 
-Panel* Panel_new(int x, int y, int w, int h, bool owner, ObjectClass* type, FunctionBar* fuBar) {
+Panel* Panel_new(int x, int y, int w, int h, const ObjectClass* type, bool owner, FunctionBar* fuBar) {
    Panel* this;
    this = xMalloc(sizeof(Panel));
    Object_setClass(this, Class(Panel));
@@ -107,7 +44,7 @@ void Panel_delete(Object* cast) {
    free(this);
 }
 
-void Panel_init(Panel* this, int x, int y, int w, int h, ObjectClass* type, bool owner, FunctionBar* fuBar) {
+void Panel_init(Panel* this, int x, int y, int w, int h, const ObjectClass* type, bool owner, FunctionBar* fuBar) {
    this->x = x;
    this->y = y;
    this->w = w;
@@ -118,11 +55,13 @@ void Panel_init(Panel* this, int x, int y, int w, int h, ObjectClass* type, bool
    this->scrollH = 0;
    this->selected = 0;
    this->oldSelected = 0;
+   this->selectedLen = 0;
    this->needsRedraw = true;
+   this->wasFocus = false;
    RichString_beginAllocated(this->header);
    this->defaultBar = fuBar;
    this->currentBar = fuBar;
-   this->selectionColor = CRT_colors[PANEL_SELECTION_FOCUS];
+   this->selectionColorId = PANEL_SELECTION_FOCUS;
 }
 
 void Panel_done(Panel* this) {
@@ -130,22 +69,15 @@ void Panel_done(Panel* this) {
    free(this->eventHandlerState);
    Vector_delete(this->items);
    FunctionBar_delete(this->defaultBar);
-   RichString_end(this->header);
+   RichString_delete(&this->header);
 }
 
-void Panel_setSelectionColor(Panel* this, int color) {
-   this->selectionColor = color;
-}
-
-RichString* Panel_getHeader(Panel* this) {
-   assert (this != NULL);
-
-   this->needsRedraw = true;
-   return &(this->header);
+void Panel_setSelectionColor(Panel* this, ColorElements colorId) {
+   this->selectionColorId = colorId;
 }
 
 inline void Panel_setHeader(Panel* this, const char* header) {
-   RichString_write(&(this->header), CRT_colors[PANEL_HEADER_FOCUS], header);
+   RichString_writeWide(&(this->header), CRT_colors[PANEL_HEADER_FOCUS], header);
    this->needsRedraw = true;
 }
 
@@ -160,8 +92,6 @@ void Panel_move(Panel* this, int x, int y) {
 void Panel_resize(Panel* this, int w, int h) {
    assert (this != NULL);
 
-   if (RichString_sizeVal(this->header) > 0)
-      h--;
    this->w = w;
    this->h = h;
    this->needsRedraw = true;
@@ -208,42 +138,47 @@ Object* Panel_remove(Panel* this, int i) {
 
    this->needsRedraw = true;
    Object* removed = Vector_remove(this->items, i);
-   if (this->selected > 0 && this->selected >= Vector_size(this->items))
+   if (this->selected > 0 && this->selected >= Vector_size(this->items)) {
       this->selected--;
+   }
+
    return removed;
 }
 
 Object* Panel_getSelected(Panel* this) {
    assert (this != NULL);
-   if (Vector_size(this->items) > 0)
+   if (Vector_size(this->items) > 0) {
       return Vector_get(this->items, this->selected);
-   else
+   } else {
       return NULL;
+   }
 }
 
 void Panel_moveSelectedUp(Panel* this) {
    assert (this != NULL);
 
    Vector_moveUp(this->items, this->selected);
-   if (this->selected > 0)
+   if (this->selected > 0) {
       this->selected--;
+   }
 }
 
 void Panel_moveSelectedDown(Panel* this) {
    assert (this != NULL);
 
    Vector_moveDown(this->items, this->selected);
-   if (this->selected + 1 < Vector_size(this->items))
+   if (this->selected + 1 < Vector_size(this->items)) {
       this->selected++;
+   }
 }
 
-int Panel_getSelectedIndex(Panel* this) {
+int Panel_getSelectedIndex(const Panel* this) {
    assert (this != NULL);
 
    return this->selected;
 }
 
-int Panel_size(Panel* this) {
+int Panel_size(const Panel* this) {
    assert (this != NULL);
 
    return Vector_size(this->items);
@@ -256,15 +191,24 @@ void Panel_setSelected(Panel* this, int selected) {
    if (selected >= size) {
       selected = size - 1;
    }
-   if (selected < 0)
+   if (selected < 0) {
       selected = 0;
+   }
    this->selected = selected;
    if (Panel_eventHandlerFn(this)) {
       Panel_eventHandler(this, EVENT_SET_SELECTED);
    }
 }
 
-void Panel_draw(Panel* this, bool focus) {
+void Panel_splice(Panel* this, Vector* from) {
+   assert (this != NULL);
+   assert (from != NULL);
+
+   Vector_splice(this->items, from);
+   this->needsRedraw = true;
+}
+
+void Panel_draw(Panel* this, bool force_redraw, bool focus, bool highlightSelected, bool hideFunctionBar) {
    assert (this != NULL);
 
    int size = Vector_size(this->items);
@@ -273,27 +217,37 @@ void Panel_draw(Panel* this, bool focus) {
    int x = this->x;
    int h = this->h;
 
+   if (hideFunctionBar)
+      h++;
+
+   const int header_attr = focus
+                         ? CRT_colors[PANEL_HEADER_FOCUS]
+                         : CRT_colors[PANEL_HEADER_UNFOCUS];
+   if (force_redraw) {
+      if (Panel_printHeaderFn(this))
+         Panel_printHeader(this);
+      else
+         RichString_setAttr(&this->header, header_attr);
+   }
    int headerLen = RichString_sizeVal(this->header);
    if (headerLen > 0) {
-      int attr = focus
-               ? CRT_colors[PANEL_HEADER_FOCUS]
-               : CRT_colors[PANEL_HEADER_UNFOCUS];
-      attrset(attr);
+      attrset(header_attr);
       mvhline(y, x, ' ', this->w);
       if (scrollH < headerLen) {
          RichString_printoffnVal(this->header, y, x, scrollH,
-            MIN(headerLen - scrollH, this->w));
+            MINIMUM(headerLen - scrollH, this->w));
       }
       attrset(CRT_colors[RESET_COLOR]);
       y++;
+      h--;
    }
 
    // ensure scroll area is on screen
    if (this->scrollV < 0) {
       this->scrollV = 0;
       this->needsRedraw = true;
-   } else if (this->scrollV >= size) {
-      this->scrollV = MAX(size - 1, 0);
+   } else if (this->scrollV > size - h) {
+      this->scrollV = MAXIMUM(size - h, 0);
       this->needsRedraw = true;
    }
    // ensure selection is on screen
@@ -306,137 +260,150 @@ void Panel_draw(Panel* this, bool focus) {
    }
 
    int first = this->scrollV;
-   int upTo = MIN(first + h, size);
+   int upTo = MINIMUM(first + h, size);
 
    int selectionColor = focus
-                 ? this->selectionColor
-                 : CRT_colors[PANEL_SELECTION_UNFOCUS];
+                      ? CRT_colors[this->selectionColorId]
+                      : CRT_colors[PANEL_SELECTION_UNFOCUS];
 
-   if (this->needsRedraw) {
+   if (this->needsRedraw || force_redraw) {
       int line = 0;
-      for(int i = first; line < h && i < upTo; i++) {
-         Object* itemObj = Vector_get(this->items, i);
-         assert(itemObj); if(!itemObj) continue;
+      for (int i = first; line < h && i < upTo; i++) {
+         const Object* itemObj = Vector_get(this->items, i);
          RichString_begin(item);
          Object_display(itemObj, &item);
          int itemLen = RichString_sizeVal(item);
-         int amt = MIN(itemLen - scrollH, this->w);
-         bool selected = (i == this->selected);
-         if (selected) {
-            attrset(selectionColor);
-            RichString_setAttr(&item, selectionColor);
+         int amt = MINIMUM(itemLen - scrollH, this->w);
+         if (highlightSelected && i == this->selected) {
+            item.highlightAttr = selectionColor;
+         }
+         if (item.highlightAttr) {
+            attrset(item.highlightAttr);
+            RichString_setAttr(&item, item.highlightAttr);
             this->selectedLen = itemLen;
          }
          mvhline(y + line, x, ' ', this->w);
          if (amt > 0)
             RichString_printoffnVal(item, y + line, x, scrollH, amt);
-         if (selected)
+         if (item.highlightAttr)
             attrset(CRT_colors[RESET_COLOR]);
-         RichString_end(item);
+         RichString_delete(&item);
          line++;
       }
       while (line < h) {
          mvhline(y + line, x, ' ', this->w);
          line++;
       }
-      this->needsRedraw = false;
 
    } else {
-      Object* oldObj = Vector_get(this->items, this->oldSelected);
-      assert(oldObj);
+      const Object* oldObj = Vector_get(this->items, this->oldSelected);
       RichString_begin(old);
       Object_display(oldObj, &old);
       int oldLen = RichString_sizeVal(old);
-      Object* newObj = Vector_get(this->items, this->selected);
+      const Object* newObj = Vector_get(this->items, this->selected);
       RichString_begin(new);
       Object_display(newObj, &new);
       int newLen = RichString_sizeVal(new);
       this->selectedLen = newLen;
-      mvhline(y+ this->oldSelected - first, x+0, ' ', this->w);
+      mvhline(y + this->oldSelected - first, x + 0, ' ', this->w);
       if (scrollH < oldLen)
-         RichString_printoffnVal(old, y+this->oldSelected - first, x,
-            scrollH, MIN(oldLen - scrollH, this->w));
+         RichString_printoffnVal(old, y + this->oldSelected - first, x,
+            scrollH, MINIMUM(oldLen - scrollH, this->w));
       attrset(selectionColor);
-      mvhline(y+this->selected - first, x+0, ' ', this->w);
+      mvhline(y + this->selected - first, x + 0, ' ', this->w);
       RichString_setAttr(&new, selectionColor);
       if (scrollH < newLen)
-         RichString_printoffnVal(new, y+this->selected - first, x,
-            scrollH, MIN(newLen - scrollH, this->w));
+         RichString_printoffnVal(new, y + this->selected - first, x,
+            scrollH, MINIMUM(newLen - scrollH, this->w));
       attrset(CRT_colors[RESET_COLOR]);
-      RichString_end(new);
-      RichString_end(old);
+      RichString_delete(&new);
+      RichString_delete(&old);
    }
+
+   if (focus && (this->needsRedraw || force_redraw || !this->wasFocus)) {
+      if (Panel_drawFunctionBarFn(this))
+         Panel_drawFunctionBar(this, hideFunctionBar);
+      else if (!hideFunctionBar)
+         FunctionBar_draw(this->currentBar);
+   }
+
    this->oldSelected = this->selected;
+   this->wasFocus = focus;
+   this->needsRedraw = false;
    move(0, 0);
 }
 
+static int Panel_headerHeight(const Panel* this) {
+   return RichString_sizeVal(this->header) > 0 ? 1 : 0;
+}
+
 bool Panel_onKey(Panel* this, int key) {
    assert (this != NULL);
-   
-   int size = Vector_size(this->items);
+
+   const int size = Vector_size(this->items);
+
+   #define PANEL_SCROLL(amount)                                                                                     \
+   do {                                                                                                             \
+      this->selected += (amount);                                                                                   \
+      this->scrollV = CLAMP(this->scrollV + (amount), 0, MAXIMUM(0, (size - this->h - Panel_headerHeight(this))));  \
+      this->needsRedraw = true;                                                                                     \
+   } while (0)
+
    switch (key) {
    case KEY_DOWN:
    case KEY_CTRL('N'):
-      this->selected++;
-      break;
-   case KEY_UP:
-   case KEY_CTRL('P'):
-      this->selected--;
-      break;
    #ifdef KEY_C_DOWN
    case KEY_C_DOWN:
+   #endif
       this->selected++;
       break;
-   #endif
+
+   case KEY_UP:
+   case KEY_CTRL('P'):
    #ifdef KEY_C_UP
    case KEY_C_UP:
+   #endif
       this->selected--;
       break;
-   #endif
+
    case KEY_LEFT:
    case KEY_CTRL('B'):
       if (this->scrollH > 0) {
-         this->scrollH -= MAX(CRT_scrollHAmount, 0);
+         this->scrollH -= MAXIMUM(CRT_scrollHAmount, 0);
          this->needsRedraw = true;
       }
       break;
+
    case KEY_RIGHT:
    case KEY_CTRL('F'):
       this->scrollH += CRT_scrollHAmount;
       this->needsRedraw = true;
       break;
+
    case KEY_PPAGE:
-      this->selected -= (this->h - 1);
-      this->scrollV = MAX(0, this->scrollV - this->h + 1);
-      this->needsRedraw = true;
+      PANEL_SCROLL(-(this->h - Panel_headerHeight(this)));
       break;
+
    case KEY_NPAGE:
-      this->selected += (this->h - 1);
-      this->scrollV = MAX(0, MIN(Vector_size(this->items) - this->h,
-                                 this->scrollV + this->h - 1));
-      this->needsRedraw = true;
+      PANEL_SCROLL(+(this->h - Panel_headerHeight(this)));
       break;
+
    case KEY_WHEELUP:
-      this->selected -= CRT_scrollWheelVAmount;
-      this->scrollV -= CRT_scrollWheelVAmount;
-      this->needsRedraw = true;
+      PANEL_SCROLL(-CRT_scrollWheelVAmount);
       break;
+
    case KEY_WHEELDOWN:
-   {
-      this->selected += CRT_scrollWheelVAmount;
-      this->scrollV += CRT_scrollWheelVAmount;
-      if (this->scrollV > Vector_size(this->items) - this->h) {
-         this->scrollV = Vector_size(this->items) - this->h;
-      }
-      this->needsRedraw = true;
+      PANEL_SCROLL(+CRT_scrollWheelVAmount);
       break;
-   }
+
    case KEY_HOME:
       this->selected = 0;
       break;
+
    case KEY_END:
       this->selected = size - 1;
       break;
+
    case KEY_CTRL('A'):
    case '^':
       this->scrollH = 0;
@@ -444,58 +411,77 @@ bool Panel_onKey(Panel* this, int key) {
       break;
    case KEY_CTRL('E'):
    case '$':
-      this->scrollH = MAX(this->selectedLen - this->w, 0);
+      this->scrollH = MAXIMUM(this->selectedLen - this->w, 0);
       this->needsRedraw = true;
       break;
    default:
       return false;
    }
 
+   #undef PANEL_SCROLL
+
    // ensure selection within bounds
    if (this->selected < 0 || size == 0) {
       this->selected = 0;
       this->needsRedraw = true;
-   } else if (this->selected >= size) {   
+   } else if (this->selected >= size) {
       this->selected = size - 1;
       this->needsRedraw = true;
    }
+
    return true;
 }
 
 
 HandlerResult Panel_selectByTyping(Panel* this, int ch) {
    int size = Panel_size(this);
+
    if (!this->eventHandlerState)
       this->eventHandlerState = xCalloc(100, sizeof(char));
    char* buffer = this->eventHandlerState;
 
-   if (ch < 255 && isalnum(ch)) {
+   if (0 < ch && ch < 255 && isgraph((unsigned char)ch)) {
       int len = strlen(buffer);
+      if (!len) {
+         if ('/' == ch) {
+            ch = '\001';
+         } else if ('q' == ch) {
+            return BREAK_LOOP;
+         }
+      } else if (1 == len && '\001' == buffer[0]) {
+         len--;
+      }
+
       if (len < 99) {
          buffer[len] = ch;
-         buffer[len+1] = '\0';
+         buffer[len + 1] = '\0';
       }
+
       for (int try = 0; try < 2; try++) {
          len = strlen(buffer);
          for (int i = 0; i < size; i++) {
-            char* cur = ((ListItem*) Panel_get(this, i))->value;
+            const char* cur = ((ListItem*) Panel_get(this, i))->value;
             while (*cur == ' ') cur++;
             if (strncasecmp(cur, buffer, len) == 0) {
                Panel_setSelected(this, i);
                return HANDLED;
             }
          }
+
          // if current word did not match,
          // retry considering the character the start of a new word.
          buffer[0] = ch;
          buffer[1] = '\0';
       }
+
       return HANDLED;
    } else if (ch != ERR) {
       buffer[0] = '\0';
    }
+
    if (ch == 13) {
       return BREAK_LOOP;
    }
+
    return IGNORED;
 }

Panel.h

@@ -1,52 +1,66 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Panel
 #define HEADER_Panel
 /*
 htop - Panel.h
 (C) 2004-2011 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-//#link curses
+#include "config.h" // IWYU pragma: keep
 
-#include "Object.h"
-#include "Vector.h"
+#include <assert.h>
+#include <stdbool.h>
+
+#include "CRT.h"
 #include "FunctionBar.h"
+#include "Object.h"
+#include "RichString.h"
+#include "Vector.h"
 
+
+struct Panel_;
 typedef struct Panel_ Panel;
 
 typedef enum HandlerResult_ {
    HANDLED     = 0x01,
    IGNORED     = 0x02,
    BREAK_LOOP  = 0x04,
-   REDRAW      = 0x08,
-   RESCAN      = 0x10,
-   SYNTH_KEY   = 0x20,
+   REFRESH     = 0x08,
+   REDRAW      = 0x10,
+   RESCAN      = 0x20,
+   RESIZE      = 0x40,
+   SYNTH_KEY   = 0x80,
 } HandlerResult;
 
-#define EVENT_SET_SELECTED -1
+#define EVENT_SET_SELECTED (-1)
 
-#define EVENT_HEADER_CLICK(x_) (-10000 + x_)
-#define EVENT_IS_HEADER_CLICK(ev_) (ev_ >= -10000 && ev_ <= -9000)
-#define EVENT_HEADER_CLICK_GET_X(ev_) (ev_ + 10000)
+#define EVENT_HEADER_CLICK(x_) (-10000 + (x_))
+#define EVENT_IS_HEADER_CLICK(ev_) ((ev_) >= -10000 && (ev_) <= -9000)
+#define EVENT_HEADER_CLICK_GET_X(ev_) ((ev_) + 10000)
 
-typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
+typedef HandlerResult (*Panel_EventHandler)(Panel*, int);
+typedef void (*Panel_DrawFunctionBar)(Panel*, bool);
+typedef void (*Panel_PrintHeader)(Panel*);
 
 typedef struct PanelClass_ {
    const ObjectClass super;
    const Panel_EventHandler eventHandler;
+   const Panel_DrawFunctionBar drawFunctionBar;
+   const Panel_PrintHeader printHeader;
 } PanelClass;
 
-#define As_Panel(this_)                ((PanelClass*)((this_)->super.klass))
-#define Panel_eventHandlerFn(this_)    As_Panel(this_)->eventHandler
-#define Panel_eventHandler(this_, ev_) As_Panel(this_)->eventHandler((Panel*)(this_), ev_)
+#define As_Panel(this_)                        ((const PanelClass*)((this_)->super.klass))
+#define Panel_eventHandlerFn(this_)            As_Panel(this_)->eventHandler
+#define Panel_eventHandler(this_, ev_)         (assert(As_Panel(this_)->eventHandler), As_Panel(this_)->eventHandler((Panel*)(this_), ev_))
+#define Panel_drawFunctionBarFn(this_)         As_Panel(this_)->drawFunctionBar
+#define Panel_drawFunctionBar(this_, hideFB_)  (assert(As_Panel(this_)->drawFunctionBar), As_Panel(this_)->drawFunctionBar((Panel*)(this_), hideFB_))
+#define Panel_printHeaderFn(this_)             As_Panel(this_)->printHeader
+#define Panel_printHeader(this_)               (assert(As_Panel(this_)->printHeader), As_Panel(this_)->printHeader((Panel*)(this_)))
 
 struct Panel_ {
    Object super;
    int x, y, w, h;
-   WINDOW* window;
    Vector* items;
    int selected;
    int oldSelected;
@@ -55,39 +69,30 @@ struct Panel_ {
    int scrollV;
    short scrollH;
    bool needsRedraw;
+   bool wasFocus;
    FunctionBar* currentBar;
    FunctionBar* defaultBar;
    RichString header;
-   int selectionColor;
+   ColorElements selectionColorId;
 };
 
-#define Panel_setDefaultBar(this_) do{ (this_)->currentBar = (this_)->defaultBar; }while(0)
-
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
+#define Panel_setDefaultBar(this_) do { (this_)->currentBar = (this_)->defaultBar; } while (0)
 
 #define KEY_CTRL(l) ((l)-'A'+1)
 
-extern PanelClass Panel_class;
+extern const PanelClass Panel_class;
 
-Panel* Panel_new(int x, int y, int w, int h, bool owner, ObjectClass* type, FunctionBar* fuBar);
+Panel* Panel_new(int x, int y, int w, int h, const ObjectClass* type, bool owner, FunctionBar* fuBar);
 
 void Panel_delete(Object* cast);
 
-void Panel_init(Panel* this, int x, int y, int w, int h, ObjectClass* type, bool owner, FunctionBar* fuBar);
+void Panel_init(Panel* this, int x, int y, int w, int h, const ObjectClass* type, bool owner, FunctionBar* fuBar);
 
 void Panel_done(Panel* this);
 
-void Panel_setSelectionColor(Panel* this, int color);
+void Panel_setSelectionColor(Panel* this, ColorElements colorId);
 
-RichString* Panel_getHeader(Panel* this);
-
-extern void Panel_setHeader(Panel* this, const char* header);
+void Panel_setHeader(Panel* this, const char* header);
 
 void Panel_move(Panel* this, int x, int y);
 
@@ -111,13 +116,15 @@ void Panel_moveSelectedUp(Panel* this);
 
 void Panel_moveSelectedDown(Panel* this);
 
-int Panel_getSelectedIndex(Panel* this);
+int Panel_getSelectedIndex(const Panel* this);
 
-int Panel_size(Panel* this);
+int Panel_size(const Panel* this);
 
 void Panel_setSelected(Panel* this, int selected);
 
-void Panel_draw(Panel* this, bool focus);
+void Panel_draw(Panel* this, bool force_redraw, bool focus, bool highlightSelected, bool hideFunctionBar);
+
+void Panel_splice(Panel* this, Vector* from);
 
 bool Panel_onKey(Panel* this, int key);
 

Process.h

@@ -1,33 +1,28 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Process
 #define HEADER_Process
 /*
 htop - Process.h
 (C) 2004-2015 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2020 Red Hat, Inc.  All Rights Reserved.
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#ifdef __ANDROID__
-#define SYS_ioprio_get __NR_ioprio_get
-#define SYS_ioprio_set __NR_ioprio_set
-#endif
-
-// On Linux, this works only with glibc 2.1+. On earlier versions
-// the behavior is similar to have a hardcoded page size.
-#ifndef PAGE_SIZE
-#define PAGE_SIZE ( sysconf(_SC_PAGESIZE) )
-#endif
-#define PAGE_SIZE_KB ( PAGE_SIZE / ONE_K )
-
-#include "Object.h"
-
+#include <stdbool.h>
+#include <stdint.h>
 #include <sys/types.h>
 
-#define PROCESS_FLAG_IO 0x0001
+#include "Object.h"
+#include "ProcessField.h"
+#include "RichString.h"
 
-typedef enum ProcessFields {
+
+#define PROCESS_FLAG_IO              0x00000001
+#define PROCESS_FLAG_CWD             0x00000002
+
+#define DEFAULT_HIGHLIGHT_SECS 5
+
+typedef enum ProcessField_ {
    NULL_PROCESSFIELD = 0,
    PID = 1,
    COMM = 2,
@@ -35,7 +30,7 @@ typedef enum ProcessFields {
    PPID = 4,
    PGRP = 5,
    SESSION = 6,
-   TTY_NR = 7,
+   TTY = 7,
    TPGID = 8,
    MINFLT = 10,
    MAJFLT = 12,
@@ -43,7 +38,7 @@ typedef enum ProcessFields {
    NICE = 19,
    STARTTIME = 21,
    PROCESSOR = 38,
-   M_SIZE = 39,
+   M_VIRT = 39,
    M_RESIDENT = 40,
    ST_UID = 46,
    PERCENT_CPU = 47,
@@ -52,150 +47,352 @@ typedef enum ProcessFields {
    TIME = 50,
    NLWP = 51,
    TGID = 52,
+   PERCENT_NORM_CPU = 53,
+   ELAPSED = 54,
+   PROC_COMM = 124,
+   PROC_EXE = 125,
+   CWD = 126,
+
+   /* Platform specific fields, defined in ${platform}/ProcessField.h */
+   PLATFORM_PROCESS_FIELDS
+
+   /* Do not add new fields after this entry (dynamic entries follow) */
+   LAST_PROCESSFIELD
 } ProcessField;
 
-typedef struct ProcessPidColumn_ {
-   int id;
-   char* label;
-} ProcessPidColumn;
+struct Settings_;
+
+/* Holds information about regions of the cmdline that should be
+ * highlighted (e.g. program basename, delimiter, comm). */
+typedef struct ProcessCmdlineHighlight_ {
+   size_t offset; /* first character to highlight */
+   size_t length; /* How many characters to highlight, zero if unused */
+   int attr;      /* The attributes used to highlight */
+   int flags;     /* Special flags used for selective highlighting, zero for always */
+} ProcessCmdlineHighlight;
+
+/* ProcessMergedCommand is populated by Process_makeCommandStr: It
+ * contains the merged Command string, and the information needed by
+ * Process_writeCommand to color the string. str will be NULL for kernel
+ * threads and zombies */
+typedef struct ProcessMergedCommand_ {
+   char* str;                                  /* merged Command string */
+   size_t highlightCount;                      /* how many portions of cmdline to highlight */
+   ProcessCmdlineHighlight highlights[8];      /* which portions of cmdline to highlight */
+   bool cmdlineChanged : 1;                    /* whether cmdline changed */
+   bool exeChanged : 1;                        /* whether exe changed */
+   bool commChanged : 1;                       /* whether comm changed */
+   bool prevMergeSet : 1;                      /* whether showMergedCommand was set */
+   bool prevPathSet : 1;                       /* whether showProgramPath was set */
+   bool prevCommSet : 1;                       /* whether findCommInCmdline was set */
+   bool prevCmdlineSet : 1;                    /* whether stripExeFromCmdline was set */
+   bool prevShowThreadNames : 1;               /* whether showThreadNames was set */
+} ProcessMergedCommand;
 
 typedef struct Process_ {
+   /* Super object for emulated OOP */
    Object super;
 
-   struct Settings_* settings;
+   /* Pointer to quasi-global data structures */
+   const struct ProcessList_* processList;
+   const struct Settings_* settings;
 
-   unsigned long long int time;
+   /* Process identifier */
    pid_t pid;
+
+   /* Parent process identifier */
    pid_t ppid;
+
+   /* Thread group identifier */
    pid_t tgid;
-   char* comm;
-   int commLen;
-   int indent;
 
-   int basenameOffset;
-   bool updated;
+   /* Process group identifier */
+   int pgrp;
 
-   char state;
-   bool tag;
-   bool showChildren;
-   bool show;
-   unsigned int pgrp;
-   unsigned int session;
-   unsigned int tty_nr;
+   /* Session identifier */
+   int session;
+
+   /* Foreground group identifier of the controlling terminal */
    int tpgid;
+
+   /* This is a kernel (helper) task */
+   bool isKernelThread;
+
+   /* This is a userland thread / LWP */
+   bool isUserlandThread;
+
+   /* Controlling terminal identifier of the process */
+   unsigned long int tty_nr;
+
+   /* Controlling terminal name of the process */
+   char* tty_name;
+
+   /* User identifier */
    uid_t st_uid;
-   unsigned long int flags;
+
+   /* User name */
+   const char* user;
+
+   /* Process runtime (in hundredth of a second) */
+   unsigned long long int time;
+
+   /*
+    * Process name including arguments.
+    * Use Process_getCommand() for Command actually displayed.
+    */
+   char* cmdline;
+
+   /* End Offset in cmdline of the process basename */
+   int cmdlineBasenameEnd;
+
+   /* Start Offset in cmdline of the process basename */
+   int cmdlineBasenameStart;
+
+   /* The process' "command" name */
+   char* procComm;
+
+   /* The main process executable */
+   char* procExe;
+
+   /* The process/thread working directory */
+   char* procCwd;
+
+   /* Offset in procExe of the process basename */
+   int procExeBasenameOffset;
+
+   /* Tells if the executable has been replaced in the filesystem since start */
+   bool procExeDeleted;
+
+   /* Tells if the process uses replaced shared libraries since start */
+   bool usesDeletedLib;
+
+   /* CPU number last executed on */
    int processor;
 
+   /* CPU usage during last cycle (in percent) */
    float percent_cpu;
-   float percent_mem;
-   char* user;
 
+   /* Memory usage during last cycle (in percent) */
+   float percent_mem;
+
+   /* Scheduling priority */
    long int priority;
+
+   /* Nice value */
    long int nice;
+
+   /* Number of threads in this process */
    long int nlwp;
-   char starttime_show[8];
+
+   /* Process start time (in seconds elapsed since the Epoch) */
    time_t starttime_ctime;
 
-   long m_size;
+   /* Process start time (cached formatted string) */
+   char starttime_show[8];
+
+   /* Total program size (in kilobytes) */
+   long m_virt;
+
+   /* Resident set size (in kilobytes) */
    long m_resident;
 
-   int exit_signal;
-
+   /* Number of minor faults the process has made which have not required loading a memory page from disk */
    unsigned long int minflt;
-   unsigned long int majflt;
-   #ifdef DEBUG
-   long int itrealvalue;
-   unsigned long int vsize;
-   long int rss;
-   unsigned long int rlim;
-   unsigned long int startcode;
-   unsigned long int endcode;
-   unsigned long int startstack;
-   unsigned long int kstkesp;
-   unsigned long int kstkeip;
-   unsigned long int signal;
-   unsigned long int blocked;
-   unsigned long int sigignore;
-   unsigned long int sigcatch;
-   unsigned long int wchan;
-   unsigned long int nswap;
-   unsigned long int cnswap;
-   #endif
 
+   /* Number of major faults the process has made which have required loading a memory page from disk */
+   unsigned long int majflt;
+
+   /*
+    * Process state (platform dependent):
+    *   D  -  Waiting
+    *   I  -  Idle
+    *   L  -  Acquiring lock
+    *   R  -  Running
+    *   S  -  Sleeping
+    *   T  -  Stopped (on a signal)
+    *   X  -  Dead
+    *   Z  -  Zombie
+    *   t  -  Tracing stop
+    *   ?  -  Unknown
+    */
+   char state;
+
+   /* Whether the process was updated during the current scan */
+   bool updated;
+
+   /* Whether the process was tagged by the user */
+   bool tag;
+
+   /* Whether to display this process */
+   bool show;
+
+   /* Whether this process was shown last cycle */
+   bool wasShown;
+
+   /* Whether to show children of this process in tree-mode */
+   bool showChildren;
+
+   /*
+    * Internal time counts for showing new and exited processes.
+    */
+   uint64_t seenStampMs;
+   uint64_t tombStampMs;
+
+   /*
+    * Internal state for tree-mode.
+    */
+   int indent;
+   unsigned int tree_left;
+   unsigned int tree_right;
+   unsigned int tree_depth;
+   unsigned int tree_index;
+
+   /*
+    * Internal state for merged Command display
+    */
+   ProcessMergedCommand mergedCommand;
 } Process;
 
 typedef struct ProcessFieldData_ {
+   /* Name (displayed in setup menu) */
    const char* name;
+
+   /* Title (display in main screen); must have same width as the printed values */
    const char* title;
+
+   /* Description (displayed in setup menu) */
    const char* description;
-   int flags;
+
+   /* Scan flag to enable scan-method otherwise not run */
+   uint32_t flags;
+
+   /* Whether the values are process identifiers; adjusts the width of title and values if true */
+   bool pidColumn;
+
+   /* Whether the column should be sorted in descending order by default */
+   bool defaultSortDesc;
 } ProcessFieldData;
 
 // Implemented in platform-specific code:
-void Process_writeField(Process* this, RichString* str, ProcessField field);
-long Process_compare(const void* v1, const void* v2);
+void Process_writeField(const Process* this, RichString* str, ProcessField field);
+int Process_compare(const void* v1, const void* v2);
 void Process_delete(Object* cast);
-bool Process_isThread(Process* this);
-extern ProcessFieldData Process_fields[];
-extern ProcessPidColumn Process_pidColumns[];
-extern char Process_pidFormat[20];
+extern const ProcessFieldData Process_fields[LAST_PROCESSFIELD];
+#define PROCESS_MAX_PID_DIGITS 19
+extern int Process_pidDigits;
 
-typedef Process*(*Process_New)(struct Settings_*);
-typedef void (*Process_WriteField)(Process*, RichString*, ProcessField);
+typedef Process* (*Process_New)(const struct Settings_*);
+typedef void (*Process_WriteField)(const Process*, RichString*, ProcessField);
+typedef int (*Process_CompareByKey)(const Process*, const Process*, ProcessField);
+typedef const char* (*Process_GetCommandStr)(const Process*);
 
 typedef struct ProcessClass_ {
    const ObjectClass super;
    const Process_WriteField writeField;
+   const Process_CompareByKey compareByKey;
+   const Process_GetCommandStr getCommandStr;
 } ProcessClass;
 
-#define As_Process(this_)              ((ProcessClass*)((this_)->super.klass))
+#define As_Process(this_)                              ((const ProcessClass*)((this_)->super.klass))
 
-#define Process_isChildOf(process_, pid_) (process_->tgid == pid_ || (process_->tgid == process_->pid && process_->ppid == pid_))
+#define Process_getCommand(this_)                      (As_Process(this_)->getCommandStr ? As_Process(this_)->getCommandStr((const Process*)(this_)) : Process_getCommandStr((const Process*)(this_)))
+#define Process_compareByKey(p1_, p2_, key_)           (As_Process(p1_)->compareByKey ? (As_Process(p1_)->compareByKey(p1_, p2_, key_)) : Process_compareByKey_Base(p1_, p2_, key_))
 
-#define Process_sortState(state) ((state) == 'I' ? 0x100 : (state))
+static inline pid_t Process_getParentPid(const Process* this) {
+   return this->tgid == this->pid ? this->ppid : this->tgid;
+}
 
+static inline bool Process_isChildOf(const Process* this, pid_t pid) {
+   return pid == Process_getParentPid(this);
+}
 
-#define ONE_K 1024L
+static inline bool Process_isKernelThread(const Process* this) {
+   return this->isKernelThread;
+}
+
+static inline bool Process_isUserlandThread(const Process* this) {
+   return this->isUserlandThread;
+}
+
+static inline bool Process_isThread(const Process* this) {
+   return Process_isUserlandThread(this) || Process_isKernelThread(this);
+}
+
+#define CMDLINE_HIGHLIGHT_FLAG_SEPARATOR  0x00000001
+#define CMDLINE_HIGHLIGHT_FLAG_BASENAME   0x00000002
+#define CMDLINE_HIGHLIGHT_FLAG_COMM       0x00000004
+#define CMDLINE_HIGHLIGHT_FLAG_DELETED    0x00000008
+
+#define ONE_K 1024UL
 #define ONE_M (ONE_K * ONE_K)
 #define ONE_G (ONE_M * ONE_K)
+#define ONE_T (1ULL * ONE_G * ONE_K)
+#define ONE_P (1ULL * ONE_T * ONE_K)
 
-#define ONE_DECIMAL_K 1000L
+#define ONE_DECIMAL_K 1000UL
 #define ONE_DECIMAL_M (ONE_DECIMAL_K * ONE_DECIMAL_K)
 #define ONE_DECIMAL_G (ONE_DECIMAL_M * ONE_DECIMAL_K)
+#define ONE_DECIMAL_T (1ULL * ONE_DECIMAL_G * ONE_DECIMAL_K)
+#define ONE_DECIMAL_P (1ULL * ONE_DECIMAL_T * ONE_DECIMAL_K)
 
-extern char Process_pidFormat[20];
+void Process_setupColumnWidths(void);
 
-void Process_setupColumnWidths();
+/* Takes number in bytes (base 1024). Prints 6 columns. */
+void Process_printBytes(RichString* str, unsigned long long number, bool coloring);
 
-void Process_humanNumber(RichString* str, unsigned long number, bool coloring);
+/* Takes number in kilo bytes (base 1024). Prints 6 columns. */
+void Process_printKBytes(RichString* str, unsigned long long number, bool coloring);
 
-void Process_colorNumber(RichString* str, unsigned long long number, bool coloring);
+/* Takes number as count (base 1000). Prints 12 columns. */
+void Process_printCount(RichString* str, unsigned long long number, bool coloring);
 
-void Process_printTime(RichString* str, unsigned long long totalHundredths);
+/* Takes time in hundredths of a seconds. Prints 9 columns. */
+void Process_printTime(RichString* str, unsigned long long totalHundredths, bool coloring);
 
-void Process_outputRate(RichString* str, char* buffer, int n, double rate, int coloring);
+/* Takes rate in bare unit (base 1024) per second. Prints 12 columns. */
+void Process_printRate(RichString* str, double rate, bool coloring);
 
-void Process_writeField(Process* this, RichString* str, ProcessField field);
+void Process_fillStarttimeBuffer(Process* this);
 
-void Process_display(Object* cast, RichString* out);
+void Process_printLeftAlignedField(RichString* str, int attr, const char* content, unsigned int width);
+
+void Process_printPercentage(float val, char* buffer, int n, int* attr);
+
+void Process_display(const Object* cast, RichString* out);
 
 void Process_done(Process* this);
 
-extern ProcessClass Process_class;
+extern const ProcessClass Process_class;
 
-void Process_init(Process* this, struct Settings_* settings);
+void Process_init(Process* this, const struct Settings_* settings);
 
 void Process_toggleTag(Process* this);
 
+bool Process_isNew(const Process* this);
+
+bool Process_isTomb(const Process* this);
+
 bool Process_setPriority(Process* this, int priority);
 
-bool Process_changePriorityBy(Process* this, size_t delta);
+bool Process_changePriorityBy(Process* this, Arg delta);
 
-void Process_sendSignal(Process* this, size_t sgn);
+bool Process_sendSignal(Process* this, Arg sgn);
 
-long Process_pidCompare(const void* v1, const void* v2);
+int Process_pidCompare(const void* v1, const void* v2);
 
-long Process_compare(const void* v1, const void* v2);
+int Process_compareByKey_Base(const Process* p1, const Process* p2, ProcessField key);
+
+// Avoid direct calls, use Process_getCommand instead
+const char* Process_getCommandStr(const Process* this);
+
+void Process_updateComm(Process* this, const char* comm);
+void Process_updateCmdline(Process* this, const char* cmdline, int basenameStart, int basenameEnd);
+void Process_updateExe(Process* this, const char* exe);
+
+/* This function constructs the string that is displayed by
+ * Process_writeCommand and also returned by Process_getCommandStr */
+void Process_makeCommandStr(Process* this);
+
+void Process_writeCommand(const Process* this, int attr, int baseAttr, RichString* str);
 
 #endif