Bump version number for 3.0.3 release

- compilation failures like `return &this->this;` -> `return &this->super;`
- iwyu update
- misc cleanup

.editorconfig

@@ -0,0 +1,17 @@
+# EditorConfig configuration for htop
+# http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file, utf-8 charset
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+
+# match C source and header files, set indent to three spaces
+[*.{c,h}]
+indent_style = space
+indent_size = 3
+trim_trailing_whitespace = true

.github/workflows/ci.yml

@@ -0,0 +1,110 @@
+name: CI
+
+on: [ push, pull_request ]
+
+jobs:
+  build-ubuntu-latest-minimal-gcc:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install libncursesw5-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-linux-affinity --disable-unicode --without-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-linux-affinity --disable-unicode --without-sensors"
+
+  build-ubuntu-latest-minimal-clang:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-11
+    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/bionic/ llvm-toolchain-bionic-11 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install clang-11 libncursesw5-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-linux-affinity --disable-unicode --without-sensors
+    - name: Build
+      run: make -k
+    - name: Distcheck
+      run: make distcheck DISTCHECK_CONFIGURE_FLAGS="--enable-werror --enable-linux-affinity --disable-unicode --without-sensors"
+
+  build-ubuntu-latest-full-featured-gcc:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install Dependencies
+      run: sudo apt-get install libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-setuid --enable-delayacct --with-sensors
+    - 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-setuid --enable-delayacct --with-sensors'
+
+  build-ubuntu-latest-full-featured-clang:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-11
+    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/bionic/ llvm-toolchain-bionic-11 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install clang-11 libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: ./configure --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-setuid --enable-delayacct --with-sensors
+    - 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-setuid --enable-delayacct --with-sensors'
+
+  build-ubuntu-latest-clang-analyzer:
+    runs-on: ubuntu-latest
+    env:
+      CC: clang-11
+    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/bionic/ llvm-toolchain-bionic-11 main' -y
+        sudo apt-get update -q
+    - name: Install Dependencies
+      run: sudo apt-get install clang-11 clang-tools-11 libncursesw5-dev libhwloc-dev libnl-3-dev libnl-genl-3-dev libsensors4-dev
+    - name: Bootstrap
+      run: ./autogen.sh
+    - name: Configure
+      run: scan-build-11 -analyze-headers --status-bugs ./configure --enable-debug --enable-werror --enable-openvz --enable-vserver --enable-ancient-vserver --enable-unicode --enable-hwloc --enable-setuid --enable-delayacct --with-sensors
+    - name: Build
+      run: scan-build-11 -analyze-headers --status-bugs make -j"$(nproc)"
+
+  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

@@ -0,0 +1,47 @@
+# the binary:
+htop
+
+# all object files
+*.o
+
+# skip all backups
+*.bak
+*~
+.*.sw?
+
+# skip coverage files
+*.gcda
+*/*.gcda
+*.gcno
+*/*.gcno
+*.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
+config.log
+config.status
+config.cache
+config.sub
+configure
+depcomp
+htop.1
+install-sh
+libtool
+ltmain.sh
+m4/
+missing
+stamp-h1
+
+# files related to valgrind/callgrind
+callgrind.out.*

.travis.yml

@@ -0,0 +1,26 @@
+language: c
+
+compiler:
+  - clang
+  - gcc
+
+os:
+  - freebsd
+  - linux
+  - osx
+
+arch:
+  - amd64
+  - s390x
+
+before_script:
+  if [[ ${TRAVIS_CPU_ARCH} == 's390x' ]]; then
+      sudo apt-get update && sudo apt-get install -y libncursesw5-dev ;
+  fi
+
+script:
+  - ./autogen.sh
+  # clang might warn about C11 generic selections in isnan()
+  - CFLAGS=-Wno-c11-extensions ./configure --enable-werror
+  - make -k
+  - CFLAGS=-Wno-c11-extensions make distcheck DISTCHECK_CONFIGURE_FLAGS=--enable-werror

AUTHORS

@@ -1 +1,11 @@
+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

@@ -0,0 +1,697 @@
+/*
+htop - Action.c
+(C) 2015 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "Action.h"
+
+#include <pwd.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "CategoriesPanel.h"
+#include "CommandScreen.h"
+#include "CRT.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 "TraceScreen.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_LINUX_AFFINITY))
+#include "Affinity.h"
+#include "AffinityPanel.h"
+#endif
+
+
+Object* Action_pickFromVector(State* st, Panel* list, int x, bool followProcess) {
+   Panel* panel = st->panel;
+   Header* header = st->header;
+   Settings* settings = st->settings;
+
+   int y = panel->y;
+   ScreenManager* scr = ScreenManager_new(header, settings, st, false);
+   scr->allowFocusChange = false;
+   ScreenManager_add(scr, list, x - 1);
+   ScreenManager_add(scr, panel, -1);
+   Panel* panelFocus;
+   int ch;
+   bool unfollow = false;
+   int pid = followProcess ? MainPanel_selectedPid((MainPanel*)panel) : -1;
+   if (followProcess && header->pl->following == -1) {
+      header->pl->following = pid;
+      unfollow = true;
+   }
+   ScreenManager_run(scr, &panelFocus, &ch);
+   if (unfollow) {
+      header->pl->following = -1;
+   }
+   ScreenManager_delete(scr);
+   Panel_move(panel, 0, y);
+   Panel_resize(panel, COLS, LINES - y - 1);
+   if (panelFocus == list && ch == 13) {
+      if (followProcess) {
+         Process* selected = (Process*)Panel_getSelected(panel);
+         if (selected && selected->pid == pid)
+            return Panel_getSelected(list);
+
+         beep();
+      } else {
+         return Panel_getSelected(list);
+      }
+   }
+
+   return NULL;
+}
+
+// ----------------------------------------
+
+static void Action_runSetup(State* st) {
+   ScreenManager* scr = ScreenManager_new(st->header, st->settings, st, true);
+   CategoriesPanel* panelCategories = CategoriesPanel_new(scr, st->settings, st->header, st->pl);
+   ScreenManager_add(scr, (Panel*) panelCategories, 16);
+   CategoriesPanel_makeMetersPage(panelCategories);
+   Panel* panelFocus;
+   int ch;
+   ScreenManager_run(scr, &panelFocus, &ch);
+   ScreenManager_delete(scr);
+   if (st->settings->changed) {
+      Header_writeBackToSettings(st->header);
+   }
+}
+
+static bool changePriority(MainPanel* panel, int delta) {
+   bool anyTagged;
+   bool ok = MainPanel_foreachProcess(panel, Process_changePriorityBy, (Arg) { .i = delta }, &anyTagged);
+   if (!ok)
+      beep();
+   return anyTagged;
+}
+
+static void addUserToVector(hkey_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) {
+   const struct passwd* user = getpwnam(userName);
+   if (user) {
+      *userId = user->pw_uid;
+      return true;
+   }
+   *userId = (uid_t)-1;
+   return false;
+}
+
+static void tagAllChildren(Panel* panel, Process* parent) {
+   parent->tag = true;
+   pid_t ppid = parent->pid;
+   for (int i = 0; i < Panel_size(panel); i++) {
+      Process* p = (Process*) Panel_get(panel, i);
+      if (!p->tag && Process_isChildOf(p, ppid)) {
+         tagAllChildren(panel, p);
+      }
+   }
+}
+
+static bool expandCollapse(Panel* panel) {
+   Process* p = (Process*) Panel_getSelected(panel);
+   if (!p)
+      return false;
+
+   p->showChildren = !p->showChildren;
+   return true;
+}
+
+static bool collapseIntoParent(Panel* panel) {
+   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;
+}
+
+Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
+   settings->sortKey = sortKey;
+   settings->direction = 1;
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
+}
+
+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, 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 actionResize(State* st) {
+   clear();
+   Panel_resize(st->panel, COLS, LINES - (st->panel->y) - 1);
+   return HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionSortByMemory(State* st) {
+   return Action_setSortKey(st->settings, PERCENT_MEM);
+}
+
+static Htop_Reaction actionSortByCPU(State* st) {
+   return Action_setSortKey(st->settings, PERCENT_CPU);
+}
+
+static Htop_Reaction actionSortByTime(State* st) {
+   return Action_setSortKey(st->settings, TIME);
+}
+
+static Htop_Reaction actionToggleKernelThreads(State* st) {
+   st->settings->hideKernelThreads = !st->settings->hideKernelThreads;
+   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
+}
+
+static Htop_Reaction actionToggleUserlandThreads(State* st) {
+   st->settings->hideUserlandThreads = !st->settings->hideUserlandThreads;
+   return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
+}
+
+static Htop_Reaction actionToggleProgramPath(State* st) {
+   st->settings->showProgramPath = !st->settings->showProgramPath;
+   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);
+   return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionIncFilter(State* st) {
+   IncSet* inc = ((MainPanel*)st->panel)->inc;
+   IncSet_activate(inc, INC_FILTER, st->panel);
+   st->pl->incFilter = IncSet_filter(inc);
+   return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionIncSearch(State* st) {
+   IncSet_reset(((MainPanel*)st->panel)->inc, INC_SEARCH);
+   IncSet_activate(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel);
+   return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionIncNext(State* st) {
+   IncSet_next(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel, (IncMode_GetPanelValue) MainPanel_getValue);
+   return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionIncPrev(State* st) {
+   IncSet_prev(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel, (IncMode_GetPanelValue) MainPanel_getValue);
+   return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionHigherPriority(State* st) {
+   bool changed = changePriority((MainPanel*)st->panel, -1);
+   return changed ? HTOP_REFRESH : HTOP_OK;
+}
+
+static Htop_Reaction actionLowerPriority(State* st) {
+   bool changed = changePriority((MainPanel*)st->panel, 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);
+}
+
+static Htop_Reaction actionExpandOrCollapse(State* st) {
+   bool changed = expandCollapse(st->panel);
+   return changed ? HTOP_RECALCULATE : HTOP_OK;
+}
+
+static Htop_Reaction actionCollapseIntoParent(State* st) {
+   if (!st->settings->treeView) {
+      return HTOP_OK;
+   }
+   bool changed = collapseIntoParent(st->panel);
+   return changed ? HTOP_RECALCULATE : HTOP_OK;
+}
+
+static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
+   return st->settings->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
+}
+
+static Htop_Reaction actionQuit(ATTR_UNUSED State* st) {
+   return HTOP_QUIT;
+}
+
+static Htop_Reaction actionSetAffinity(State* st) {
+   if (st->pl->cpuCount == 1)
+      return HTOP_OK;
+
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_LINUX_AFFINITY))
+   Panel* panel = st->panel;
+
+   Process* p = (Process*) Panel_getSelected(panel);
+   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);
+   width += 1; /* we add a gap between the panels */
+   Affinity_delete(affinity1);
+
+   void* set = Action_pickFromVector(st, affinityPanel, width, true);
+   if (set) {
+      Affinity* affinity2 = AffinityPanel_getAffinity(affinityPanel, st->pl);
+      bool ok = MainPanel_foreachProcess((MainPanel*)panel, Affinity_set, (Arg) { .v = affinity2 }, NULL);
+      if (!ok)
+         beep();
+      Affinity_delete(affinity2);
+   }
+   Object_delete(affinityPanel);
+#endif
+   return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionKill(State* st) {
+   Panel* signalsPanel = SignalsPanel_new();
+   ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 15, true);
+   if (sgn) {
+      if (sgn->key != 0) {
+         Panel_setHeader(st->panel, "Sending...");
+         Panel_draw(st->panel, true, true);
+         refresh();
+         MainPanel_foreachProcess((MainPanel*)st->panel, 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_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, false);
+   if (picked) {
+      if (picked == allUsers) {
+         st->pl->userId = (uid_t)-1;
+      } else {
+         Action_setUserOnly(ListItem_getRef(picked), &(st->pl->userId));
+      }
+   }
+   Panel_delete((Object*)usersPanel);
+   return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+Htop_Reaction Action_follow(State* st) {
+   st->pl->following = MainPanel_selectedPid((MainPanel*)st->panel);
+   Panel_setSelectionColor(st->panel, CRT_colors[PANEL_SELECTION_FOLLOW]);
+   return HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionSetup(State* st) {
+   Action_runSetup(st);
+   // 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;
+}
+
+static Htop_Reaction actionLsof(State* st) {
+   Process* p = (Process*) Panel_getSelected(st->panel);
+   if (!p)
+      return HTOP_OK;
+
+   OpenFilesScreen* ofs = OpenFilesScreen_new(p);
+   InfoScreen_run((InfoScreen*)ofs);
+   OpenFilesScreen_delete((Object*)ofs);
+   clear();
+   CRT_enableDelay();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionShowLocks(State* st) {
+   Process* p = (Process*) Panel_getSelected(st->panel);
+   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;
+
+   TraceScreen* ts = TraceScreen_new(p);
+   bool ok = TraceScreen_forkTracer(ts);
+   if (ok) {
+      InfoScreen_run((InfoScreen*)ts);
+   }
+   TraceScreen_delete((Object*)ts);
+   clear();
+   CRT_enableDelay();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionTag(State* st) {
+   Process* p = (Process*) Panel_getSelected(st->panel);
+   if (!p)
+      return HTOP_OK;
+
+   Process_toggleTag(p);
+   Panel_onKey(st->panel, KEY_DOWN);
+   return HTOP_OK;
+}
+
+static Htop_Reaction actionRedraw(ATTR_UNUSED State* st) {
+   clear();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionTogglePauseProcessUpdate(State* st) {
+   st->pauseProcessUpdate = !st->pauseProcessUpdate;
+   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 = "      m: ", .info = "toggle merged command" },
+   { .key = "      Z: ", .info = "pause/resume process updates" },
+   { .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" },
+   { .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 (defined(HAVE_LIBHWLOC) || defined(HAVE_LINUX_AFFINITY))
+   { .key = "      a: ", .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 = "      x: ", .info = "list file locks of process" },
+   { .key = "      s: ", .info = "trace syscalls with strace" },
+   { .key = "      w: ", .info = "wrap process command in multiple lines" },
+   { .key = " F2 C S: ", .info = "setup" },
+   { .key = "   F1 h: ", .info = "show this help screen" },
+   { .key = "  F10 q: ", .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++)
+      mvhline(i, 0, ' ', COLS);
+
+   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]);
+   line++;
+   mvaddstr(line++, 0, "CPU usage bar: ");
+
+   addattrstr(CRT_colors[BAR_BORDER], "[");
+   if (settings->detailedCPUTime) {
+      addattrstr(CRT_colors[CPU_NICE_TEXT], "low"); addstr("/");
+      addattrstr(CRT_colors[CPU_NORMAL], "normal"); 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("/");
+      addattrstr(CRT_colors[CPU_GUEST], "guest"); addstr("/");
+      addattrstr(CRT_colors[CPU_IOWAIT], "io-wait");
+      addattrstr(CRT_colors[BAR_SHADOW], " used%");
+   } else {
+      addattrstr(CRT_colors[CPU_NICE_TEXT], "low-priority"); addstr("/");
+      addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
+      addattrstr(CRT_colors[CPU_SYSTEM], "kernel"); addstr("/");
+      addattrstr(CRT_colors[CPU_GUEST], "virtualiz");
+      addattrstr(CRT_colors[BAR_SHADOW], "               used%");
+   }
+   addattrstr(CRT_colors[BAR_BORDER], "]");
+   attrset(CRT_colors[DEFAULT_COLOR]);
+   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_CACHE], "cache");
+   addattrstr(CRT_colors[BAR_SHADOW], "                            used/total");
+   addattrstr(CRT_colors[BAR_BORDER], "]");
+   attrset(CRT_colors[DEFAULT_COLOR]);
+   mvaddstr(line++, 0, "Swap bar:      ");
+   addattrstr(CRT_colors[BAR_BORDER], "[");
+   addattrstr(CRT_colors[SWAP], "used");
+   addattrstr(CRT_colors[BAR_SHADOW], "                                          used/total");
+   addattrstr(CRT_colors[BAR_BORDER], "]");
+   attrset(CRT_colors[DEFAULT_COLOR]);
+   mvaddstr(line++, 0, "Type and layout of header meters are configurable in the setup screen.");
+   if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
+      mvaddstr(line, 0, "In monochrome, meters display as different chars, in order: |#*@$%&.");
+   }
+   line++;
+
+   mvaddstr(line++, 0, "Process state: R: running; S: sleeping; T: traced/stopped; Z: zombie; D: disk sleep");
+
+   line++;
+
+   int item;
+   for (item = 0; helpLeft[item].key; item++) {
+      attrset(CRT_colors[DEFAULT_COLOR]);
+      mvaddstr(line + item, 9,  helpLeft[item].info);
+      attrset(CRT_colors[HELP_BOLD]);
+      mvaddstr(line + item, 0,  helpLeft[item].key);
+      if (String_eq(helpLeft[item].key, "      H: ")) {
+         attrset(CRT_colors[PROCESS_THREAD]);
+         mvaddstr(line + item, 32, "threads");
+      } else if (String_eq(helpLeft[item].key, "      K: ")) {
+         attrset(CRT_colors[PROCESS_THREAD]);
+         mvaddstr(line + item, 26, "threads");
+      }
+   }
+   int leftHelpItems = item;
+
+   for (item = 0; helpRight[item].key; item++) {
+      attrset(CRT_colors[HELP_BOLD]);
+      mvaddstr(line + item, 40, helpRight[item].key);
+      attrset(CRT_colors[DEFAULT_COLOR]);
+      mvaddstr(line + item, 49, helpRight[item].info);
+   }
+   line += MAXIMUM(leftHelpItems, item);
+   line++;
+
+   attrset(CRT_colors[HELP_BOLD]);
+   mvaddstr(line++, 0, "Press any key to return.");
+   attrset(CRT_colors[DEFAULT_COLOR]);
+   refresh();
+   CRT_readKey();
+   clear();
+
+   return HTOP_RECALCULATE | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionUntagAll(State* st) {
+   for (int i = 0; i < Panel_size(st->panel); i++) {
+      Process* p = (Process*) Panel_get(st->panel, 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);
+   return HTOP_OK;
+}
+
+static Htop_Reaction actionShowEnvScreen(State* st) {
+   Process* p = (Process*) Panel_getSelected(st->panel);
+   if (!p)
+      return HTOP_OK;
+
+   EnvScreen* es = EnvScreen_new(p);
+   InfoScreen_run((InfoScreen*)es);
+   EnvScreen_delete((Object*)es);
+   clear();
+   CRT_enableDelay();
+   return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionShowCommandScreen(State* st) {
+   Process* p = (Process*) Panel_getSelected(st->panel);
+   if (!p)
+      return HTOP_OK;
+
+   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[KEY_RESIZE] = actionResize;
+   keys['M'] = actionSortByMemory;
+   keys['T'] = actionSortByTime;
+   keys['P'] = actionSortByCPU;
+   keys['H'] = actionToggleUserlandThreads;
+   keys['K'] = actionToggleKernelThreads;
+   keys['p'] = actionToggleProgramPath;
+   keys['m'] = actionToggleMergedCommand;
+   keys['t'] = actionToggleTreeView;
+   keys[KEY_F(5)] = actionToggleTreeView;
+   keys[KEY_F(4)] = actionIncFilter;
+   keys['\\'] = actionIncFilter;
+   keys[KEY_F(3)] = actionIncSearch;
+   keys['/'] = actionIncSearch;
+   keys['n'] = actionIncNext;
+   keys['N'] = actionIncPrev;
+
+   keys[']'] = actionHigherPriority;
+   keys[KEY_F(7)] = actionHigherPriority;
+   keys['['] = actionLowerPriority;
+   keys[KEY_F(8)] = actionLowerPriority;
+   keys['I'] = actionInvertSortOrder;
+   keys[KEY_F(6)] = actionSetSortColumn;
+   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['\177'] = actionCollapseIntoParent;
+   keys['u'] = actionFilterByUser;
+   keys['F'] = Action_follow;
+   keys['S'] = actionSetup;
+   keys['C'] = actionSetup;
+   keys[KEY_F(2)] = actionSetup;
+   keys['x'] = actionShowLocks;
+   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;
+   keys['w'] = actionShowCommandScreen;
+   keys['Z'] = actionTogglePauseProcessUpdate;
+}

Action.h

@@ -0,0 +1,56 @@
+#ifndef HEADER_Action
+#define HEADER_Action
+/*
+htop - Action.h
+(C) 2015 Hisham H. Muhammad
+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 "Header.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_Reaction;
+
+typedef struct State_ {
+   Settings* settings;
+   UsersTable* ut;
+   ProcessList* pl;
+   Panel* panel;
+   Header* header;
+   bool pauseProcessUpdate;
+   bool hideProcessSelection;
+} State;
+
+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

@@ -0,0 +1,115 @@
+/*
+htop - Affinity.c
+(C) 2004-2011 Hisham H. Muhammad
+(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>
+
+#include "XUtils.h"
+
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
+#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 defined(HAVE_LINUX_AFFINITY)
+#include <sched.h>
+#endif
+
+
+Affinity* Affinity_new(ProcessList* pl) {
+   Affinity* this = xCalloc(1, sizeof(Affinity));
+   this->size = 8;
+   this->cpus = xCalloc(this->size, sizeof(int));
+   this->pl = pl;
+   return this;
+}
+
+void Affinity_delete(Affinity* this) {
+   free(this->cpus);
+   free(this);
+}
+
+void Affinity_add(Affinity* this, int id) {
+   if (this->used == this->size) {
+      this->size *= 2;
+      this->cpus = xRealloc(this->cpus, sizeof(int) * this->size);
+   }
+   this->cpus[this->used] = id;
+   this->used++;
+}
+
+
+#ifdef HAVE_LIBHWLOC
+
+Affinity* Affinity_get(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++) {
+            Affinity_add(affinity, i);
+         }
+      } else {
+         unsigned int id;
+         hwloc_bitmap_foreach_begin(id, cpuset);
+         Affinity_add(affinity, id);
+         hwloc_bitmap_foreach_end();
+      }
+   }
+   hwloc_bitmap_free(cpuset);
+   return affinity;
+}
+
+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++) {
+      hwloc_bitmap_set(cpuset, this->cpus[i]);
+   }
+   bool ok = (hwloc_set_proc_cpubind(this->pl->topology, proc->pid, cpuset, HTOP_HWLOC_CPUBIND_FLAG) == 0);
+   hwloc_bitmap_free(cpuset);
+   return ok;
+}
+
+#elif defined(HAVE_LINUX_AFFINITY)
+
+Affinity* Affinity_get(Process* proc, ProcessList* pl) {
+   cpu_set_t cpuset;
+   bool ok = (sched_getaffinity(proc->pid, sizeof(cpu_set_t), &cpuset) == 0);
+   if (!ok)
+      return NULL;
+
+   Affinity* affinity = Affinity_new(pl);
+   for (int i = 0; i < pl->cpuCount; i++) {
+      if (CPU_ISSET(i, &cpuset)) {
+         Affinity_add(affinity, i);
+      }
+   }
+   return affinity;
+}
+
+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++) {
+      CPU_SET(this->cpus[i], &cpuset);
+   }
+   bool ok = (sched_setaffinity(proc->pid, sizeof(unsigned long), &cpuset) == 0);
+   return ok;
+}
+
+#endif

Affinity.h

@@ -0,0 +1,49 @@
+#ifndef HEADER_Affinity
+#define HEADER_Affinity
+/*
+htop - Affinity.h
+(C) 2004-2011 Hisham H. Muhammad
+(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 "ProcessList.h"
+
+#if defined(HAVE_LIBHWLOC) || defined(HAVE_LINUX_AFFINITY)
+#include <stdbool.h>
+
+#include "Object.h"
+#include "Process.h"
+#endif
+
+
+#if defined(HAVE_LIBHWLOC) && defined(HAVE_LINUX_AFFINITY)
+#error hwloc and linux affinity are mutual exclusive.
+#endif
+
+
+typedef struct Affinity_ {
+   ProcessList* pl;
+   int size;
+   int used;
+   int* cpus;
+} Affinity;
+
+Affinity* Affinity_new(ProcessList* pl);
+
+void Affinity_delete(Affinity* this);
+
+void Affinity_add(Affinity* this, int id);
+
+#if defined(HAVE_LIBHWLOC) || defined(HAVE_LINUX_AFFINITY)
+
+Affinity* Affinity_get(Process* proc, ProcessList* pl);
+
+bool Affinity_set(Process* proc, Arg arg);
+
+#endif /* HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY */
+
+#endif

AffinityPanel.c

@@ -0,0 +1,440 @@
+/*
+htop - AffinityPanel.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 "config.h" // IWYU pragma: keep
+
+#include "AffinityPanel.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.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_append(out, CRT_colors[CHECK_BOX], "[");
+   if (this->value == 2) {
+      RichString_append(out, CRT_colors[CHECK_MARK], "x");
+   } else if (this->value == 1) {
+      RichString_append(out, CRT_colors[CHECK_MARK], "o");
+   } else {
+      RichString_append(out, CRT_colors[CHECK_MARK], " ");
+   }
+   RichString_append(out, CRT_colors[CHECK_BOX], "]");
+   RichString_append(out, CRT_colors[CHECK_TEXT], " ");
+   if (this->indent) {
+      RichString_append(out, CRT_colors[PROCESS_TREE], this->indent);
+      RichString_append(out, CRT_colors[PROCESS_TREE],
+                        this->sub_tree == 2
+                        ? CRT_treeStr[TREE_STR_OPEN]
+                        : CRT_treeStr[TREE_STR_SHUT]);
+      RichString_append(out, CRT_colors[CHECK_TEXT], " ");
+   }
+   RichString_append(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" : "");
+   FunctionBar_draw(super->currentBar);
+
+   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;
+
+   switch(ch) {
+   case KEY_MOUSE:
+   case KEY_RECLICK:
+   case ' ':
+      #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:
+      result = BREAK_LOOP;
+      break;
+   }
+
+   if (HANDLED == result)
+      AffinityPanel_update(this, keepSelected);
+
+   return result;
+}
+
+#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 = AffinityPanel_delete
+   },
+   .eventHandler = AffinityPanel_eventHandler
+};
+
+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* AffinityPanel_new(ProcessList* pl, 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:");
+
+   int curCpu = 0;
+   for (int i = 0; i < pl->cpuCount; i++) {
+      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;
+      }
+
+      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);
+   }
+
+   #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* super, ProcessList* pl) {
+   AffinityPanel* this = (AffinityPanel*) super;
+   Affinity* affinity = Affinity_new(pl);
+
+   #ifdef HAVE_LIBHWLOC
+   int i;
+   hwloc_bitmap_foreach_begin(i, this->workCpuset)
+   Affinity_add(affinity, i);
+   hwloc_bitmap_foreach_end();
+   #else
+   for (int i = 0; i < this->pl->cpuCount; i++) {
+      MaskItem* item = (MaskItem*)Vector_get(this->cpuids, i);
+      if (item->value) {
+         Affinity_add(affinity, item->cpu);
+      }
+   }
+   #endif
+
+   return affinity;
+}

AffinityPanel.h

@@ -0,0 +1,20 @@
+#ifndef HEADER_AffinityPanel
+#define HEADER_AffinityPanel
+/*
+htop - AffinityPanel.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 "Panel.h"
+#include "Affinity.h"
+#include "ProcessList.h"
+
+extern const PanelClass AffinityPanel_class;
+
+Panel* AffinityPanel_new(ProcessList* pl, Affinity* affinity, int* width);
+
+Affinity* AffinityPanel_getAffinity(Panel* super, ProcessList* pl);
+
+#endif

AvailableColumnsPanel.c

@@ -1,57 +1,37 @@
+/*
+htop - AvailableColumnsPanel.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 "AvailableColumnsPanel.h"
-#include "Settings.h"
-#include "Header.h"
-#include "ScreenManager.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
 #include "ColumnsPanel.h"
+#include "FunctionBar.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "Platform.h"
+#include "Process.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-#include "Panel.h"
 
-#include "debug.h"
-#include <assert.h>
+static const char* const AvailableColumnsFunctions[] = {"      ", "      ", "      ", "      ", "Add   ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
-/*{
-
-typedef struct AvailableColumnsPanel_ {
-   Panel super;
-   Panel* columns;
-
-   Settings* settings;
-   ScreenManager* scr;
-} AvailableColumnsPanel;
-
-}*/
-
-AvailableColumnsPanel* AvailableColumnsPanel_new(Settings* settings, Panel* columns, ScreenManager* scr) {
-   AvailableColumnsPanel* this = (AvailableColumnsPanel*) malloc(sizeof(AvailableColumnsPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, LISTITEM_CLASS, true);
-   ((Object*)this)->delete = AvailableColumnsPanel_delete;
-   
-   this->settings = settings;
-   this->scr = scr;
-   super->eventHandler = AvailableColumnsPanel_eventHandler;
-
-   Panel_setHeader(super, "Available Columns");
-
-   for (int i = 1; i < LAST_PROCESSFIELD; i++) {
-      if (i != COMM)
-         Panel_add(super, (Object*) ListItem_new(Process_fieldNames[i], 0));
-   }
-   this->columns = columns;
-   return this;
-}
-
-void AvailableColumnsPanel_delete(Object* object) {
+static void AvailableColumnsPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    AvailableColumnsPanel* this = (AvailableColumnsPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
+static HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
    AvailableColumnsPanel* this = (AvailableColumnsPanel*) super;
-   char* text = ((ListItem*) Panel_getSelected(super))->value;
    HandlerResult result = IGNORED;
 
    switch(ch) {
@@ -59,14 +39,51 @@ HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch) {
       case KEY_ENTER:
       case KEY_F(5):
       {
-         int at = Panel_getSelectedIndex(this->columns) + 1;
-         if (at == Panel_getSize(this->columns))
-            at--;
-         Panel_insert(this->columns, at, (Object*) ListItem_new(text, 0));
+         const ListItem* selected = (ListItem*) Panel_getSelected(super);
+         if (!selected)
+            break;
+
+         int key = selected->key;
+         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);
          ColumnsPanel_update(this->columns);
          result = HANDLED;
          break;
       }
+      default:
+      {
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
+            result = Panel_selectByTyping(super, ch);
+         break;
+      }
    }
    return result;
 }
+
+const PanelClass AvailableColumnsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = AvailableColumnsPanel_delete
+   },
+   .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);
+
+   Panel_setHeader(super, "Available Columns");
+
+   for (int i = 1; i < Platform_numberOfFields; 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));
+      }
+   }
+   this->columns = columns;
+   return this;
+}

AvailableColumnsPanel.h

@@ -1,32 +1,21 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_AvailableColumnsPanel
 #define HEADER_AvailableColumnsPanel
-
-#include "Settings.h"
-#include "Header.h"
-#include "ScreenManager.h"
-#include "ColumnsPanel.h"
+/*
+htop - AvailableColumnsPanel.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 "Panel.h"
 
-#include "debug.h"
-#include <assert.h>
-
-
 typedef struct AvailableColumnsPanel_ {
    Panel super;
    Panel* columns;
-
-   Settings* settings;
-   ScreenManager* scr;
 } AvailableColumnsPanel;
 
+extern const PanelClass AvailableColumnsPanel_class;
 
-AvailableColumnsPanel* AvailableColumnsPanel_new(Settings* settings, Panel* columns, ScreenManager* scr);
-
-void AvailableColumnsPanel_delete(Object* object);
-
-HandlerResult AvailableColumnsPanel_eventHandler(Panel* super, int ch);
+AvailableColumnsPanel* AvailableColumnsPanel_new(Panel* columns);
 
 #endif

AvailableMetersPanel.c

@@ -1,102 +1,80 @@
+/*
+htop - AvailableMetersPanel.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 "AvailableMetersPanel.h"
-#include "Settings.h"
-#include "Header.h"
-#include "ScreenManager.h"
-#include "CPUMeter.h"
 
-#include "Panel.h"
-
-#include "debug.h"
 #include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
 
-/*{
+#include "CPUMeter.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "ListItem.h"
+#include "Meter.h"
+#include "MetersPanel.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct AvailableMetersPanel_ {
-   Panel super;
 
-   Settings* settings;
-   Panel* leftPanel;
-   Panel* rightPanel;
-   ScreenManager* scr;
-} AvailableMetersPanel;
-
-}*/
-
-AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr) {
-   AvailableMetersPanel* this = (AvailableMetersPanel*) malloc(sizeof(AvailableMetersPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, LISTITEM_CLASS, true);
-   ((Object*)this)->delete = AvailableMetersPanel_delete;
-   
-   this->settings = settings;
-   this->leftPanel = leftMeters;
-   this->rightPanel = rightMeters;
-   this->scr = scr;
-   super->eventHandler = AvailableMetersPanel_EventHandler;
-
-   Panel_setHeader(super, "Available meters");
-   for (int i = 1; Meter_types[i]; i++) {
-      MeterType* type = Meter_types[i];
-      if (type != &CPUMeter) {
-         Panel_add(super, (Object*) ListItem_new(type->uiName, i << 16));
-      }
-   }
-   MeterType* type = &CPUMeter;
-   int processors = settings->pl->processorCount;
-   if (processors > 1) {
-      Panel_add(super, (Object*) ListItem_new("CPU average", 0));
-      for (int i = 1; i <= processors; i++) {
-         char buffer[50];
-         sprintf(buffer, "%s %d", type->uiName, i);
-         Panel_add(super, (Object*) ListItem_new(buffer, i));
-      }
-   } else {
-      Panel_add(super, (Object*) ListItem_new("CPU", 1));
-   }
-   return this;
-}
-
-void AvailableMetersPanel_delete(Object* object) {
+static void AvailableMetersPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    AvailableMetersPanel* this = (AvailableMetersPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-static inline void AvailableMetersPanel_addHeader(Header* header, Panel* panel, MeterType* type, int param, HeaderSide side) {
-   Meter* meter = (Meter*) Header_addMeter(header, type, param, side);
-   Panel_add(panel, (Object*) Meter_toListItem(meter));
+static inline void AvailableMetersPanel_addMeter(Header* header, Panel* panel, const MeterClass* type, int param, int column) {
+   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);
 }
 
-HandlerResult AvailableMetersPanel_EventHandler(Panel* super, int ch) {
+static HandlerResult AvailableMetersPanel_eventHandler(Panel* super, int ch) {
    AvailableMetersPanel* this = (AvailableMetersPanel*) super;
-   Header* header = this->settings->header;
+   Header* header = this->header;
+
+   const ListItem* selected = (ListItem*) Panel_getSelected(super);
+   if (!selected)
+      return IGNORED;
 
-   ListItem* selected = (ListItem*) Panel_getSelected(super);
    int param = selected->key & 0xff;
    int type = selected->key >> 16;
    HandlerResult result = IGNORED;
+   bool update = false;
 
    switch(ch) {
       case KEY_F(5):
       case 'l':
       case 'L':
       {
-         AvailableMetersPanel_addHeader(header, this->leftPanel, Meter_types[type], param, LEFT_HEADER);
+         AvailableMetersPanel_addMeter(header, this->leftPanel, Platform_meterTypes[type], param, 0);
          result = HANDLED;
+         update = true;
          break;
       }
+      case 0x0a:
+      case 0x0d:
+      case KEY_ENTER:
       case KEY_F(6):
       case 'r':
       case 'R':
       {
-         AvailableMetersPanel_addHeader(header, this->rightPanel, Meter_types[type], param, RIGHT_HEADER);
-         result = HANDLED;
+         AvailableMetersPanel_addMeter(header, this->rightPanel, Platform_meterTypes[type], param, 1);
+         result = (KEY_LEFT << 16) | SYNTH_KEY;
+         update = true;
          break;
       }
    }
-   if (result == HANDLED) {
+   if (update) {
       this->settings->changed = true;
       Header_calculateHeight(header);
       Header_draw(header);
@@ -104,3 +82,48 @@ HandlerResult AvailableMetersPanel_EventHandler(Panel* super, int ch) {
    }
    return result;
 }
+
+const PanelClass AvailableMetersPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = AvailableMetersPanel_delete
+   },
+   .eventHandler = AvailableMetersPanel_eventHandler
+};
+
+AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr, 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->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++) {
+      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)
+   const 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, sizeof(buffer), "%s %d", type->uiName, Settings_cpuId(this->settings, i - 1));
+         Panel_add(super, (Object*) ListItem_new(buffer, i));
+      }
+   } else {
+      Panel_add(super, (Object*) ListItem_new("CPU", 1));
+   }
+   return this;
+}

AvailableMetersPanel.h

@@ -1,33 +1,30 @@
-/* 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 GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
 
-#include "Settings.h"
 #include "Header.h"
-#include "ScreenManager.h"
-#include "CPUMeter.h"
-
 #include "Panel.h"
-
-#include "debug.h"
-#include <assert.h>
-
+#include "ProcessList.h"
+#include "ScreenManager.h"
+#include "Settings.h"
 
 typedef struct AvailableMetersPanel_ {
    Panel super;
+   ScreenManager* scr;
 
    Settings* settings;
+   Header* header;
    Panel* leftPanel;
    Panel* rightPanel;
-   ScreenManager* scr;
 } AvailableMetersPanel;
 
+extern const PanelClass AvailableMetersPanel_class;
 
-AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr);
-
-void AvailableMetersPanel_delete(Object* object);
-
-HandlerResult AvailableMetersPanel_EventHandler(Panel* super, int ch);
+AvailableMetersPanel* AvailableMetersPanel_new(Settings* settings, Header* header, Panel* leftMeters, Panel* rightMeters, ScreenManager* scr, ProcessList* pl);
 
 #endif

BatteryMeter.c

@@ -0,0 +1,71 @@
+/*
+htop - BatteryMeter.c
+(C) 2004-2011 Hisham H. Muhammad
+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).
+*/
+
+#include "BatteryMeter.h"
+
+#include <math.h>
+
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "XUtils.h"
+
+
+static const int BatteryMeter_attributes[] = {
+   BATTERY
+};
+
+static void BatteryMeter_updateValues(Meter* this, char* buffer, size_t len) {
+   ACPresence isOnAC;
+   double percent;
+
+   Platform_getBattery(&percent, &isOnAC);
+
+   if (isnan(percent)) {
+      this->values[0] = NAN;
+      xSnprintf(buffer, len, "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)";
+   }
+
+   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);
+   }
+}
+
+const MeterClass BatteryMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete
+   },
+   .updateValues = BatteryMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 100.0,
+   .attributes = BatteryMeter_attributes,
+   .name = "Battery",
+   .uiName = "Battery",
+   .caption = "Battery: "
+};

BatteryMeter.h

@@ -0,0 +1,22 @@
+#ifndef HEADER_BatteryMeter
+#define HEADER_BatteryMeter
+/*
+htop - BatteryMeter.h
+(C) 2004-2011 Hisham H. Muhammad
+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).
+*/
+
+#include "Meter.h"
+
+typedef enum ACPresence_ {
+   AC_ABSENT,
+   AC_PRESENT,
+   AC_ERROR
+} ACPresence;
+
+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 the [`feature
+request`](https://github.com/htop-dev/htop/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3A%22feature+request%22+)
+label.
+
+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

@@ -337,3 +337,19 @@ 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
 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

@@ -1,32 +1,323 @@
 /*
 htop - CPUMeter.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+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 "Meter.h"
 
-#include "ProcessList.h"
-
-#include <stdlib.h>
-#include <curses.h>
-#include <string.h>
 #include <math.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
 
-#include "debug.h"
-#include <assert.h>
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "XUtils.h"
 
-int CPUMeter_attributes[] = {
-   CPU_NICE, CPU_NORMAL, CPU_KERNEL, CPU_IOWAIT, CPU_IRQ, CPU_SOFTIRQ
+
+static const int CPUMeter_attributes[] = {
+   CPU_NICE,
+   CPU_NORMAL,
+   CPU_SYSTEM,
+   CPU_IRQ,
+   CPU_SOFTIRQ,
+   CPU_STEAL,
+   CPU_GUEST,
+   CPU_IOWAIT
 };
 
-MeterType CPUMeter = {
-   .setValues = CPUMeter_setValues, 
-   .display = CPUMeter_display,
-   .mode = BAR_METERMODE,
-   .items = 6,
+typedef struct CPUMeterData_ {
+   int cpus;
+   Meter** meters;
+} CPUMeterData;
+
+static void CPUMeter_init(Meter* this) {
+   int cpu = this->param;
+   if (this->pl->cpuCount > 1) {
+      char caption[10];
+      xSnprintf(caption, sizeof(caption), "%3d", 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, size_t size) {
+   int cpu = this->param;
+   if (cpu > this->pl->cpuCount) {
+      xSnprintf(buffer, size, "absent");
+      for (uint8_t i = 0; i < this->curItems; i++)
+         this->values[i] = 0;
+      return;
+   }
+   memset(this->values, 0, sizeof(double) * CPU_METER_ITEMCOUNT);
+
+   char cpuUsageBuffer[8] = { 0 };
+   char cpuFrequencyBuffer[16] = { 0 };
+   char cpuTemperatureBuffer[16] = { 0 };
+
+   double percent = Platform_setCPUValues(this, cpu);
+
+   if (this->pl->settings->showCPUUsage) {
+      xSnprintf(cpuUsageBuffer, sizeof(cpuUsageBuffer), "%5.1f%%", 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 HAVE_SENSORS_SENSORS_H
+   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(buffer, size, "%s%s%s%s%s",
+             cpuUsageBuffer,
+             (cpuUsageBuffer[0] && (cpuFrequencyBuffer[0] || cpuTemperatureBuffer[0])) ? " " : "",
+             cpuFrequencyBuffer,
+             (cpuFrequencyBuffer[0] && cpuTemperatureBuffer[0]) ? " " : "",
+             cpuTemperatureBuffer);
+}
+
+static void CPUMeter_display(const Object* cast, RichString* out) {
+   char buffer[50];
+   const Meter* this = (const Meter*)cast;
+   RichString_prune(out);
+   if (this->param > this->pl->cpuCount) {
+      RichString_append(out, CRT_colors[METER_TEXT], "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_SYSTEM], 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 (!isnan(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 (!isnan(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_SYSTEM], 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 (!isnan(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);
+      }
+   }
+
+   #ifdef HAVE_SENSORS_SENSORS_H
+   if (this->pl->settings->showCPUTemperature) {
+      char cpuTemperatureBuffer[10];
+      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), "%5.1f%sF", cpuTemperature * 9 / 5 + 32, CRT_degreeSign);
+      } else {
+         xSnprintf(cpuTemperatureBuffer, sizeof(cpuTemperatureBuffer), "%5.1f%sC", cpuTemperature, CRT_degreeSign);
+      }
+      RichString_append(out, CRT_colors[METER_TEXT], "temp:");
+      RichString_append(out, CRT_colors[METER_VALUE], cpuTemperatureBuffer);
+   }
+   #endif
+}
+
+static void AllCPUsMeter_getRange(Meter* this, int* start, int* count) {
+   CPUMeterData* data = this->meterData;
+   int cpus = data->cpus;
+   switch(Meter_name(this)[0]) {
+      default:
+      case 'A': // All
+         *start = 0;
+         *count = cpus;
+         break;
+      case 'L': // First Half
+         *start = 0;
+         *count = (cpus+1) / 2;
+         break;
+      case 'R': // Second Half
+         *start = (cpus+1) / 2;
+         *count = cpus / 2;
+         break;
+   }
+}
+
+static void CPUMeterCommonInit(Meter* this, int ncol) {
+   int cpus = this->pl->cpuCount;
+   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, (const MeterClass*) Class(CPUMeter));
+
+      Meter_init(meters[i]);
+   }
+
+   if (this->mode == 0)
+      this->mode = BAR_METERMODE;
+
+   int h = Meter_modes[this->mode]->h;
+   this->h = h * ((count + ncol - 1) / ncol);
+}
+
+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;
+   AllCPUsMeter_getRange(this, &start, &count);
+   for (int i = 0; i < count; i++) {
+      Meter_setMode(meters[i], mode);
+   }
+   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) {
+   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) {
+   CPUMeterData* data = this->meterData;
+   Meter** meters = data->meters;
+   int start, count;
+   AllCPUsMeter_getRange(this, &start, &count);
+   for (int i = 0; i < count; i++) {
+      meters[i]->draw(meters[i], x, y, w);
+      y += meters[i]->h;
+   }
+}
+
+
+const MeterClass CPUMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .updateValues = CPUMeter_updateValues,
+   .defaultMode = BAR_METERMODE,
+   .maxItems = CPU_METER_ITEMCOUNT,
    .total = 100.0,
    .attributes = CPUMeter_attributes,
    .name = "CPU",
@@ -35,124 +326,230 @@ MeterType CPUMeter = {
    .init = CPUMeter_init
 };
 
-MeterType AllCPUsMeter = {
-   .mode = 0,
-   .items = 1,
+const MeterClass AllCPUsMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
    .total = 100.0,
    .attributes = CPUMeter_attributes,
    .name = "AllCPUs",
-   .uiName = "All CPUs",
+   .uiName = "CPUs (1/1)",
+   .description = "CPUs (1/1): all CPUs",
    .caption = "CPU",
-   .draw = AllCPUsMeter_draw,
-   .init = AllCPUsMeter_init,
-   .setMode = AllCPUsMeter_setMode,
+   .draw = SingleColCPUsMeter_draw,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
    .done = AllCPUsMeter_done
 };
 
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
+const MeterClass AllCPUs2Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .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 = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
 
-void CPUMeter_init(Meter* this) {
-   int processor = this->param;
-   if (this->pl->processorCount > 1) {
-      char caption[10];
-      sprintf(caption, "%-3d", processor);
-      Meter_setCaption(this, caption);
-   }
-   if (this->param == 0)
-      Meter_setCaption(this, "Avg");
-}
+const MeterClass LeftCPUsMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "LeftCPUs",
+   .uiName = "CPUs (1/2)",
+   .description = "CPUs (1/2): first half of list",
+   .caption = "CPU",
+   .draw = SingleColCPUsMeter_draw,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
 
-void CPUMeter_setValues(Meter* this, char* buffer, int size) {
-   ProcessList* pl = this->pl;
-   int processor = this->param;
-   double total = (double) pl->totalPeriod[processor];
-   double cpu;
-   this->values[0] = pl->nicePeriod[processor] / total * 100.0;
-   this->values[1] = pl->userPeriod[processor] / total * 100.0;
-   if (pl->expandSystemTime) {
-      this->values[2] = pl->systemPeriod[processor] / total * 100.0;
-      this->values[3] = pl->ioWaitPeriod[processor] / total * 100.0;
-      this->values[4] = pl->irqPeriod[processor] / total * 100.0;
-      this->values[5] = pl->softIrqPeriod[processor] / total * 100.0;
-      this->type->items = 6;
-      cpu = MIN(100.0, MAX(0.0, (this->values[0]+this->values[1]+this->values[2]+
-                       this->values[3]+this->values[4]+this->values[5])));
-   } else {
-      this->values[2] = pl->systemAllPeriod[processor] / total * 100.0;
-      this->type->items = 3;
-      cpu = MIN(100.0, MAX(0.0, (this->values[0]+this->values[1]+this->values[2])));
-   }
-   snprintf(buffer, size, "%5.1f%%", cpu );
-}
+const MeterClass RightCPUsMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .attributes = CPUMeter_attributes,
+   .name = "RightCPUs",
+   .uiName = "CPUs (2/2)",
+   .description = "CPUs (2/2): second half of list",
+   .caption = "CPU",
+   .draw = SingleColCPUsMeter_draw,
+   .init = SingleColCPUsMeter_init,
+   .updateMode = SingleColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
 
-void CPUMeter_display(Object* cast, RichString* out) {
-   char buffer[50];
-   Meter* this = (Meter*)cast;
-   RichString_init(out);
-   sprintf(buffer, "%5.1f%% ", this->values[1]);
-   RichString_append(out, CRT_colors[METER_TEXT], ":");
-   RichString_append(out, CRT_colors[CPU_NORMAL], buffer);
-   if (this->pl->expandSystemTime) {
-      sprintf(buffer, "%5.1f%% ", this->values[2]);
-      RichString_append(out, CRT_colors[METER_TEXT], "sy:");
-      RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[0]);
-      RichString_append(out, CRT_colors[METER_TEXT], "ni:");
-      RichString_append(out, CRT_colors[CPU_NICE], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[3]);
-      RichString_append(out, CRT_colors[METER_TEXT], "wa:");
-      RichString_append(out, CRT_colors[CPU_IOWAIT], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[4]);
-      RichString_append(out, CRT_colors[METER_TEXT], "hi:");
-      RichString_append(out, CRT_colors[CPU_IRQ], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[4]);
-      RichString_append(out, CRT_colors[METER_TEXT], "si:");
-      RichString_append(out, CRT_colors[CPU_SOFTIRQ], buffer);
-   } else {
-      sprintf(buffer, "%5.1f%% ", this->values[2]);
-      RichString_append(out, CRT_colors[METER_TEXT], "sys:");
-      RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[0]);
-      RichString_append(out, CRT_colors[METER_TEXT], "low:");
-      RichString_append(out, CRT_colors[CPU_NICE], buffer);
-   }
-}
+const MeterClass LeftCPUs2Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .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 = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
 
-void AllCPUsMeter_init(Meter* this) {
-   int processors = this->pl->processorCount;
-   this->drawBuffer = malloc(sizeof(Meter*) * processors);
-   Meter** meters = (Meter**) this->drawBuffer;
-   for (int i = 0; i < processors; i++)
-      meters[i] = Meter_new(this->pl, i+1, &CPUMeter);
-   this->h = processors;
-   this->mode = BAR_METERMODE;
-}
+const MeterClass RightCPUs2Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .defaultMode = CUSTOM_METERMODE,
+   .total = 100.0,
+   .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 = DualColCPUsMeter_init,
+   .updateMode = DualColCPUsMeter_updateMode,
+   .done = AllCPUsMeter_done
+};
 
-void AllCPUsMeter_done(Meter* this) {
-   int processors = this->pl->processorCount;
-   Meter** meters = (Meter**) this->drawBuffer;
-   for (int i = 0; i < processors; i++)
-      Meter_delete((Object*)meters[i]);
-}
+const MeterClass AllCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .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
+};
 
-void AllCPUsMeter_setMode(Meter* this, int mode) {
-   this->mode = mode;
-   int processors = this->pl->processorCount;
-   int h = Meter_modes[this->mode]->h;
-   this->h = h * processors;
-}
+const MeterClass LeftCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .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
+};
 
-void AllCPUsMeter_draw(Meter* this, int x, int y, int w) {
-   int processors = this->pl->processorCount;
-   Meter** meters = (Meter**) this->drawBuffer;
-   for (int i = 0; i < processors; i++) {
-      Meter_setMode(meters[i], this->mode);
-      meters[i]->draw(meters[i], x, y, w);
-      y += meters[i]->h;
-   }
-}
+const MeterClass RightCPUs4Meter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = CPUMeter_display
+   },
+   .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
+   },
+   .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
+   },
+   .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
+   },
+   .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

@@ -1,51 +1,52 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_CPUMeter
 #define HEADER_CPUMeter
 /*
 htop - CPUMeter.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
 
-#include "ProcessList.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_FREQUENCY = 8,
+   CPU_METER_TEMPERATURE = 9,
+   CPU_METER_ITEMCOUNT = 10, // number of entries in this enum
+} CPUMeterValues;
 
-#include <stdlib.h>
-#include <curses.h>
-#include <string.h>
-#include <math.h>
+extern const MeterClass CPUMeter_class;
 
-#include "debug.h"
-#include <assert.h>
+extern const MeterClass AllCPUsMeter_class;
 
-extern int CPUMeter_attributes[];
+extern const MeterClass AllCPUs2Meter_class;
 
-extern MeterType CPUMeter;
+extern const MeterClass LeftCPUsMeter_class;
 
-extern MeterType AllCPUsMeter;
+extern const MeterClass RightCPUsMeter_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 LeftCPUs2Meter_class;
 
-void CPUMeter_init(Meter* this);
+extern const MeterClass RightCPUs2Meter_class;
 
-void CPUMeter_setValues(Meter* this, char* buffer, int size);
+extern const MeterClass AllCPUs4Meter_class;
 
-void CPUMeter_display(Object* cast, RichString* out);
+extern const MeterClass LeftCPUs4Meter_class;
 
-void AllCPUsMeter_init(Meter* this);
+extern const MeterClass RightCPUs4Meter_class;
 
-void AllCPUsMeter_done(Meter* this);
+extern const MeterClass AllCPUs8Meter_class;
 
-void AllCPUsMeter_setMode(Meter* this, int mode);
+extern const MeterClass LeftCPUs8Meter_class;
 
-void AllCPUsMeter_draw(Meter* this, int x, int y, int w);
+extern const MeterClass RightCPUs8Meter_class;
 
 #endif

CRT.h

@@ -1,46 +1,41 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_CRT
 #define HEADER_CRT
 /*
 htop - CRT.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include "config.h"
 
-#include <curses.h>
-#include <signal.h>
-#include <stdlib.h>
 #include <stdbool.h>
 
-#include "String.h"
+#include "Macros.h"
+#include "ProvideCurses.h"
 
-#include "debug.h"
 
-#define ColorPair(i,j) COLOR_PAIR((7-i)*8+j)
-
-#define COLORSCHEME_DEFAULT 0
-#define COLORSCHEME_MONOCHROME 1
-#define COLORSCHEME_BLACKONWHITE 2
-#define COLORSCHEME_BLACKONWHITE2 3
-#define COLORSCHEME_MIDNIGHT 4
-#define COLORSCHEME_BLACKNIGHT 5
-
-#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
-
-//#link curses
-
-bool CRT_hasColors;
+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
+} TreeStr;
 
+typedef enum ColorSchemes_ {
+   COLORSCHEME_DEFAULT = 0,
+   COLORSCHEME_MONOCHROME,
+   COLORSCHEME_BLACKONWHITE,
+   COLORSCHEME_LIGHTTERMINAL,
+   COLORSCHEME_MIDNIGHT,
+   COLORSCHEME_BLACKNIGHT,
+   COLORSCHEME_BROKENGRAY,
+   LAST_COLORSCHEME,
+} ColorSchemes;
 
 typedef enum ColorElements_ {
    RESET_COLOR,
@@ -48,40 +43,50 @@ typedef enum ColorElements_ {
    FUNCTION_BAR,
    FUNCTION_KEY,
    FAILED_SEARCH,
+   FAILED_READ,
+   PAUSED,
    PANEL_HEADER_FOCUS,
    PANEL_HEADER_UNFOCUS,
-   PANEL_HIGHLIGHT_FOCUS,
-   PANEL_HIGHLIGHT_UNFOCUS,
+   PANEL_SELECTION_FOCUS,
+   PANEL_SELECTION_FOLLOW,
+   PANEL_SELECTION_UNFOCUS,
    LARGE_NUMBER,
    METER_TEXT,
    METER_VALUE,
+   METER_VALUE_ERROR,
+   METER_VALUE_IOREAD,
+   METER_VALUE_IOWRITE,
+   METER_VALUE_NOTICE,
+   METER_VALUE_OK,
    LED_COLOR,
    UPTIME,
-   TASKS_TOTAL,
+   BATTERY,
    TASKS_RUNNING,
    SWAP,
    PROCESS,
    PROCESS_SHADOW,
    PROCESS_TAG,
    PROCESS_MEGABYTES,
+   PROCESS_GIGABYTES,
    PROCESS_TREE,
    PROCESS_R_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,
    GRAPH_2,
-   GRAPH_3,
-   GRAPH_4,
-   GRAPH_5,
-   GRAPH_6,
-   GRAPH_7,
-   GRAPH_8,
-   GRAPH_9,
    MEMORY_USED,
    MEMORY_BUFFERS,
+   MEMORY_BUFFERS_TEXT,
    MEMORY_CACHE,
    LOAD,
    LOAD_AVERAGE_FIFTEEN,
@@ -91,42 +96,92 @@ typedef enum ColorElements_ {
    CHECK_MARK,
    CHECK_TEXT,
    CLOCK,
-   CPU_NICE,
-   CPU_NORMAL,
-   CPU_KERNEL,
+   DATE,
+   DATETIME,
    HELP_BOLD,
+   HOSTNAME,
+   CPU_NICE,
+   CPU_NICE_TEXT,
+   CPU_NORMAL,
+   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,
    LAST_COLORELEMENT
 } ColorElements;
 
+void CRT_fatalError(const char* note) ATTR_NORETURN;
 
-// TODO: centralize these in Settings.
+void CRT_handleSIGSEGV(int signal) ATTR_NORETURN;
 
-extern int CRT_delay;
+#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_degreeSign;
+
+#ifdef HAVE_LIBNCURSESW
+
+extern bool CRT_utf8;
+
+#endif
+
+extern const char* const* CRT_treeStr;
+
+extern const int* CRT_colors;
+
+extern int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT];
+
+extern int CRT_cursorX;
+
+extern int CRT_scrollHAmount;
+
+extern int CRT_scrollWheelVAmount;
+
+extern const char* CRT_termType;
 
 extern int CRT_colorScheme;
 
-extern int CRT_colors[LAST_COLORELEMENT];
+extern long CRT_pageSize;
+extern long CRT_pageSizeKB;
 
-char* CRT_termType;
+#ifdef HAVE_SETUID_ENABLED
 
-// TODO: pass an instance of Settings instead.
+void CRT_dropPrivileges(void);
 
-void CRT_init(int delay, int colorScheme);
+void CRT_restorePrivileges(void);
 
-void CRT_done();
+#else /* HAVE_SETUID_ENABLED */
 
-int CRT_readKey();
+/* Turn setuid operations into NOPs */
+static inline void CRT_dropPrivileges(void) { }
+static inline void CRT_restorePrivileges(void) { }
 
-void CRT_disableDelay();
+#endif /* HAVE_SETUID_ENABLED */
 
-void CRT_enableDelay();
+void CRT_init(const int* delay, int colorScheme, bool allowUnicode);
 
-void CRT_handleSIGSEGV(int signal);
+void CRT_done(void);
 
-void CRT_handleSIGTERM(int signal);
+int CRT_readKey(void);
+
+void CRT_disableDelay(void);
+
+void CRT_enableDelay(void);
 
 void CRT_setColors(int colorScheme);
 

CategoriesPanel.c

@@ -1,84 +1,103 @@
+/*
+htop - CategoriesPanel.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 "CategoriesPanel.h"
-#include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
-#include "DisplayOptionsPanel.h"
-#include "ColumnsPanel.h"
-#include "ColorsPanel.h"
+
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
 #include "AvailableColumnsPanel.h"
+#include "AvailableMetersPanel.h"
+#include "ColorsPanel.h"
+#include "ColumnsPanel.h"
+#include "DisplayOptionsPanel.h"
+#include "FunctionBar.h"
+#include "ListItem.h"
+#include "MetersPanel.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
 
-#include "Panel.h"
 
-#include "debug.h"
-#include <assert.h>
+static const char* const CategoriesFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
-/*{
-
-typedef struct CategoriesPanel_ {
-   Panel super;
-
-   Settings* settings;
-   ScreenManager* scr;
-} CategoriesPanel;
-
-}*/
-
-static char* MetersFunctions[10] = {"      ", "      ", "      ", "Type  ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  "};
-
-static char* AvailableMetersFunctions[10] = {"      ", "      ", "      ", "      ", "Add L ", "Add R ", "      ", "      ", "      ", "Done  "};
-
-static char* DisplayOptionsFunctions[10] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  "};
-
-static char* ColumnsFunctions[10] = {"      ", "      ", "      ", "      ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  "};
-
-static char* ColorsFunctions[10] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  "};
-
-static char* AvailableColumnsFunctions[10] = {"      ", "      ", "      ", "      ", "Add   ", "      ", "      ", "      ", "      ", "Done  "};
-
-CategoriesPanel* CategoriesPanel_new(Settings* settings, ScreenManager* scr) {
-   CategoriesPanel* this = (CategoriesPanel*) malloc(sizeof(CategoriesPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, LISTITEM_CLASS, true);
-   ((Object*)this)->delete = CategoriesPanel_delete;
-
-   this->settings = settings;
-   this->scr = scr;
-   super->eventHandler = CategoriesPanel_eventHandler;
-   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));
-   return this;
-}
-
-void CategoriesPanel_delete(Object* object) {
+static void CategoriesPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    CategoriesPanel* this = (CategoriesPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
+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);
+   ScreenManager_add(this->scr, availableMeters, -1);
+}
+
+static void CategoriesPanel_makeDisplayOptionsPage(CategoriesPanel* this) {
+   Panel* displayOptions = (Panel*) DisplayOptionsPanel_new(this->settings, this->scr);
+   ScreenManager_add(this->scr, displayOptions, -1);
+}
+
+static void CategoriesPanel_makeColorsPage(CategoriesPanel* this) {
+   Panel* colors = (Panel*) ColorsPanel_new(this->settings, this->scr);
+   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);
+   ScreenManager_add(this->scr, columns, 20);
+   ScreenManager_add(this->scr, availableColumns, -1);
+}
+
+static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
    CategoriesPanel* this = (CategoriesPanel*) super;
 
    HandlerResult result = IGNORED;
 
-   int previous = Panel_getSelectedIndex(super);
-
+   int selected = Panel_getSelectedIndex(super);
    switch (ch) {
+      case EVENT_SET_SELECTED:
+         result = HANDLED;
+         break;
       case KEY_UP:
+      case KEY_CTRL('P'):
       case KEY_DOWN:
+      case KEY_CTRL('N'):
       case KEY_NPAGE:
       case KEY_PPAGE:
       case KEY_HOME:
       case KEY_END: {
+         int previous = selected;
          Panel_onKey(super, ch);
-         int selected = Panel_getSelectedIndex(super);
-         if (previous != selected) {
+         selected = Panel_getSelectedIndex(super);
+         if (previous != selected)
+            result = HANDLED;
+         break;
+      }
+      default:
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
+            result = Panel_selectByTyping(super, ch);
+         if (result == BREAK_LOOP)
+            result = IGNORED;
+         break;
+   }
+   if (result == HANDLED) {
       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);
@@ -94,35 +113,31 @@ HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
             break;
       }
    }
-         result = HANDLED;
-      }
-   }
-
    return result;
 }
 
-void CategoriesPanel_makeMetersPage(CategoriesPanel* this) {
-   Panel* leftMeters = (Panel*) MetersPanel_new(this->settings, "Left column", this->settings->header->leftMeters, this->scr);
-   Panel* rightMeters = (Panel*) MetersPanel_new(this->settings, "Right column", this->settings->header->rightMeters, this->scr);
-   Panel* availableMeters = (Panel*) AvailableMetersPanel_new(this->settings, leftMeters, rightMeters, this->scr);
-   ScreenManager_add(this->scr, leftMeters, FunctionBar_new(10, MetersFunctions, NULL, NULL), 20);
-   ScreenManager_add(this->scr, rightMeters, FunctionBar_new(10, MetersFunctions, NULL, NULL), 20);
-   ScreenManager_add(this->scr, availableMeters, FunctionBar_new(10, AvailableMetersFunctions, NULL, NULL), -1);
-}
+const PanelClass CategoriesPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = CategoriesPanel_delete
+   },
+   .eventHandler = CategoriesPanel_eventHandler
+};
 
-void CategoriesPanel_makeDisplayOptionsPage(CategoriesPanel* this) {
-   Panel* displayOptions = (Panel*) DisplayOptionsPanel_new(this->settings, this->scr);
-   ScreenManager_add(this->scr, displayOptions, FunctionBar_new(10, DisplayOptionsFunctions, NULL, NULL), -1);
-}
+CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Header* header, ProcessList* pl) {
+   CategoriesPanel* this = AllocThis(CategoriesPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(CategoriesFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
 
-void CategoriesPanel_makeColorsPage(CategoriesPanel* this) {
-   Panel* colors = (Panel*) ColorsPanel_new(this->settings, this->scr);
-   ScreenManager_add(this->scr, colors, FunctionBar_new(10, ColorsFunctions, NULL, NULL), -1);
-}
-
-void CategoriesPanel_makeColumnsPage(CategoriesPanel* this) {
-   Panel* columns = (Panel*) ColumnsPanel_new(this->settings, this->scr);
-   Panel* availableColumns = (Panel*) AvailableColumnsPanel_new(this->settings, columns, this->scr);
-   ScreenManager_add(this->scr, columns, FunctionBar_new(10, ColumnsFunctions, NULL, NULL), 20);
-   ScreenManager_add(this->scr, availableColumns, FunctionBar_new(10, AvailableColumnsFunctions, NULL, NULL), -1);
+   this->scr = scr;
+   this->settings = settings;
+   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));
+   return this;
 }

CategoriesPanel.h

@@ -1,41 +1,31 @@
-/* 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 GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
 
-#include "AvailableMetersPanel.h"
-#include "MetersPanel.h"
-#include "DisplayOptionsPanel.h"
-#include "ColumnsPanel.h"
-#include "ColorsPanel.h"
-#include "AvailableColumnsPanel.h"
-
+#include "Header.h"
 #include "Panel.h"
-
-#include "debug.h"
-#include <assert.h>
-
+#include "ProcessList.h"
+#include "ScreenManager.h"
+#include "Settings.h"
 
 typedef struct CategoriesPanel_ {
    Panel super;
+   ScreenManager* scr;
 
    Settings* settings;
-   ScreenManager* scr;
+   Header* header;
+   ProcessList* pl;
 } CategoriesPanel;
 
-
-CategoriesPanel* CategoriesPanel_new(Settings* settings, ScreenManager* scr);
-
-void CategoriesPanel_delete(Object* object);
-
-HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch);
-
 void CategoriesPanel_makeMetersPage(CategoriesPanel* this);
 
-void CategoriesPanel_makeDisplayOptionsPage(CategoriesPanel* this);
+extern const PanelClass CategoriesPanel_class;
 
-void CategoriesPanel_makeColorsPage(CategoriesPanel* this);
-
-void CategoriesPanel_makeColumnsPage(CategoriesPanel* this);
+CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Header* header, ProcessList* pl);
 
 #endif

ChangeLog

@@ -1,3 +1,497 @@
+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
+
+* Linux: Delay accounting metrics
+  (thanks to André Carvalho)
+* DragonFlyBSD support
+  (thanks to Diederik de Groot)
+* Support for real-time signals
+  (thanks to Kang-Che Sung)
+* 'c' key now works with threads as well
+* Session column renamed from SESN to SID
+  (thanks to Kamyar Rasta)
+* Improved UI for meter style selection
+  (thanks to Kang-Che Sung)
+* Improved code for constructing process tree
+  (thanks to wangqr)
+* Compile-time option to disable setuid
+* Error checking of various standard library operations
+* Replacement of sprintf with snprintf
+  (thanks to Tomasz Kramkowski)
+* Linux: performance improvements in battery meter
+* Linux: update process TTY device
+* Linux: add support for sorting TASK_IDLE
+  (thanks to Vladimir Panteleev)
+* Linux: add upper-bound to running process counter
+  (thanks to Lucas Correia Villa Real)
+* BUGFIX: avoid crash when battery is removed
+  (thanks to Jan Chren)
+* BUGFIX: macOS: fix infinite loop in tree view
+  (thanks to Wataru Ashihara)
+
+What's new in version 2.0.2
+
+* Mac OS X: stop trying when task_for_pid fails for a process,
+  stops spamming logs with errors.
+* Add Ctrl+A and Ctrl+E to go to beginning and end of line
+* FreeBSD: fixes for CPU calculation
+  (thanks to Tim Creech, Andy Pilate)
+* Usability: auto-follow process after a search.
+* Use Linux backend on GNU Hurd
+* Improvement for reproducible builds.
+* BUGFIX: Fix behavior of Alt-key combinations
+  (thanks to Kang-Che Sung)
+* Various code tweaks and cleanups
+  (thanks to Kang-Che Sung)
+
+What's new in version 2.0.1
+
+* OpenBSD: Various fixes and improvements
+  (thanks to Michael McConville and Juan Francisco Cantero Hurtado)
+* FreeBSD: fix CPU and memory readings
+  (thanks to Tim Creech, Hung-Yi Chen, Bernard Spil, Greg V)
+* FreeBSD: add battery support
+  (thanks to Greg V)
+* Linux: Retain last-obtained name of a zombie process
+* Mac OS X: Improve portability for OS X versions
+  (thanks to Michael Klein)
+* Mac OS X: Fix reading command-line arguments and basename
+* Mac OS X: Fix process state information
+* Mac OS X: Fix tree view collapsing/expanding
+* Mac OS X: Fix tree organization
+* Mac OS X: Fix memory accounting
+* Fix crash when emptying a column of meters
+* Make Esc key more responsive
+
+What's new in version 2.0.0
+
+* Platform abstraction layer
+* Initial FreeBSD support
+* Initial Mac OS X support
+  (thanks to David Hunt)
+* Swap meter for Mac OSX
+  (thanks to Ștefan Rusu)
+* OpenBSD port
+  (thanks to Michael McConville)
+* FreeBSD support improvements
+  (thanks to Martin Misuth)
+* Support for NCurses 6 ABI, including mouse wheel support
+* Much improved mouse responsiveness
+* Process environment variables screen
+  (thanks to Michael Klein)
+* Higher-resolution UTF-8 based Graph mode
+  (Thanks to James Hall from vtop for the idea!)
+* Show program path settings
+  (thanks to Tobias Geerinckx-Rice)
+* BUGFIX: Fix crash when scrolling an empty filtered list.
+* Use dynamic units for text display, and several fixes
+  (thanks to Christian Hesse)
+* BUGFIX: fix error caused by overflow in usertime calculation.
+  (thanks to Patrick Marlier)
+* Catch all memory allocation errors
+  (thanks to Michael McConville for the push)
+* Several tweaks and bugfixes
+  (See the Git log for details and contributors!)
+
+What's new in version 1.0.3
+
+* Tag all children ('c' key)
+* Fixes in accounting of guest time when using virtualization
+  (thanks to Patrick Marlier)
+* Performance improvements
+  (thanks to Jann Horn)
+* Further performance improvements due to conditional parsing
+  of IO data depending on selected fields.
+* Better consistency in coloring.
+* Increase limit of buffer when tracing a deep nested process tree.
+* Display pagefault stats.
+* BUGFIX: Fix crash when adding meters and toggling detailed CPU time.
+  (thanks to Dawid Gajownik)
+* Add column to track the OOM-killer score of processes
+  (thanks to Leigh Simpson)
+
+What's new in version 1.0.2
+
+* Add IO priority support ('i' key)
+* Avoid deleting .htoprc if it is a symlink
+* Fail gracefully when /proc is not mounted
+  (thanks to Philipp Hagemeister)
+* Option to update process names on every refresh
+  (thanks to Rob Hoelz)
+* BUGFIX: Fix crashes when process list is empty
+
+What's new in version 1.0.1
+
+* Move .htoprc to XDG-compliant path ~/.config/htop/htoprc,
+  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
+  (thanks to Trond Endrestol)
+* BUGFIX: behavior of 'F' (follow) key was broken, also affecting the
+  persistence of mouse selections.
+* BUGFIX: keep main panel up-to-date when running the screen manager,
+  to fix crash when processes die while on the F9/Kill screen.
+
+What's new in version 1.0
+
+* Performance improvements
+* Support for splitting CPU meters into two or four columns
+  (thanks to Wim Heirman)
+* Switch from PLPA, which is now deprecated, to HWLOC.
+* Bring back support for native Linux sched_setaffinity,
+  so we don't have to use HWLOC where we don't need to.
+* Support for typing in user names and column fields in selection panels.
+* Support for UTF-8 tree drawing
+  (thanks to Bin Guo)
+* Option for counting CPUs from zero
+  (thanks to Sean Noonan)
+* Meters update in every screen (no longer halting while on Setup, etc.)
+* Stricter checks for command-line options
+  (thanks to Sebastian Pipping)
+* Incremental filtering
+  (thanks to Seth Heeren for the idea and initial implementation)
+* Try harder to find the ncurses header
+  (thanks to Moritz Barsnick)
+* Man page updates
+  (thanks to Vincent Launchbury)
+* BUGFIX: Support larger numbers for process times.
+  (thanks to Tristan Nakagawa for the report.)
+* BUGFIX: Segfault in BarMeterMode_draw() for small terminal widths
+  (patch by Sebastian Pipping)
+
+What's new in version 0.9
+
+* Add support for "steal"/guest CPU time measurement
+  in virtualization environments
+* Expand and collapse subtrees using '+' and '-' when in tree-view
+* Support for cgroups
+  (thanks to Guillaume Zitta and Daniel Lezcano)
+* Show custom thread names
+  (thanks to Anders Torger)
+* Add support for STARTTIME field
+* Upgrade PLPA to version 1.3.2
+* Fix license terms with regard to PLPA
+  (thanks to Tom Callaway)
+* getopt-based long options and --no-color
+  (thanks to Vincent Launchbury)
+* BUGFIX: Fix display of nan% in CPU meters
+  (thanks to Steven Hampson)
+* BUGFIX: Fix memory leak
+  (thanks to Pavol Rusnak)
+* Add Bash/emacs style navigation keys
+  (thanks to Daniel Schuler)
+* Improve battery meter support
+  (thanks to Richard W.)
+* BUGFIX: Fix IO-wait color in "Black on White" scheme
+* BUGFIX: Fix search by process name when list is filtered by user.
+  (thanks to Sergej Pupykin for the report.)
+* BUGFIX: Fix alignment for display of memory values above 100G (sign of the times!)
+  (thanks to Jan van Haarst for the report.)
+
+What's new in version 0.8.3
+
+* BUGFIX: Fix crash on F6 key
+  (thanks to Rainer Suhm)
+* BUGFIX: Fix a minor bug which affected the build process.
+
+What's new in version 0.8.2
+
+* Integrated lsof (press 'l')
+* Fix display of gigabyte-sized values
+  (thanks to Andika Triwidada)
+* Option to display hostname in the meters area
+* Rename VEID to CTID in OpenVZ systems
+  (thanks to Thorsten Schifferdecker)
+* Corrections to the desktop entry file
+  (thanks by Samuli Suominen)
+* BUGFIX: Correct page size calculation for FreeBSD systems
+  (thanks to Andrew Paulsen)
+* Allow compilation without PLPA on systems that don't support it
+  (thanks to Timothy Redaelli)
+* BUGFIX: Fix missing tree view when userland threads are hidden
+  (thanks to Josh Stone)
+* BUGFIX: Fix for VPID on OpenVZ systems
+  (thanks to Wolfgang Frisch)
+
+What's new in version 0.8.1
+
+* Linux-VServer support
+  (thanks to Jonathan Sambrook and Benedikt Bohm)
+* Battery meter
+  (thanks to Ian Page Hands)
+* BUGFIX: Fix collection of IO stats in multithreaded processes
+  (thanks to Gerhard Heift)
+* Remove assertion that fails on hardened kernels
+  (thanks to Wolfram Schlich for the report)
+
+What's new in version 0.8
+
+* Ability to change sort column with the mouse by
+  clicking column titles (click again to invert order)
+* Add support for Linux per-process IO statistics,
+  enabled with the --enable-taskstats flag, which
+  requires a kernel compiled with taskstats support.
+  (thanks to Tobias Oetiker)
+* Add Unicode support, enabled with the --enable-unicode
+  flag, which requires libncursesw.
+  (thanks to Sergej Pupykin)
+* BUGFIX: Fix display of CPU count for threaded processes.
+  When user threads are hidden, process now shows the
+  sum of processor usage for all processors. When user
+  threads are displayed, each thread shows its own
+  processor usage, including the root thread.
+  (thanks to Bert Wesarg for the report)
+* BUGFIX: avoid crashing when using many meters
+  (thanks to David Cho for the report)
+
+What's new in version 0.7
+
+* CPU affinity configuration ('a' key)
+* Improve display of tree view, properly nesting
+  threads of the same app based on TGID.
+* IO-wait time now counts as idle time, which is a more
+  accurate description. It is still available in
+  split time, now called detailed CPU time.
+  (thanks to Samuel Thibault for the report)
+* BUGFIX: Correct display of TPGID field
+* Add TGID field
+* BUGFIX: Don't crash with invalid command-line flags
+  (thanks to Nico Golde for the report)
+* Fix GCC 4.3 compilation issues
+  (thanks to Martin Michlmayr for the report)
+* OpenVZ support, enabled at compile-time with
+  the --enable-openvz flag.
+  (thanks to Sergey Lychko)
+
+What's new in version 0.6.6
+
+* Add support of NLWP field
+  (thanks to Bert Wesarg)
+* BUGFIX: Fix use of configurable /proc location
+  (thanks to Florent Thoumie)
+* Fix memory percentage calculation and make it saner
+  (thanks to Olev Kartau for the report)
+* Added display of DRS, DT, LRS and TRS
+  (thanks to Matthias Lederhofer)
+* BUGFIX: LRS and DRS memory values were flipped
+  (thanks to Matthias Lederhofer)
+* BUGFIX: Don't crash on very high UIDs
+  (thanks to Egmont Koblinger)
+
+What's new in version 0.6.5
+
+* Add hardened-debug flags for debugging with Hardened GCC
+* BUGFIX: Handle error condition when a directory vanishes
+  from /proc
+* BUGFIX: Fix leak of process command line
+* BUGFIX: Collect orphaned items when arranging the tree view.
+  (thanks to Wolfram Schlich for assistance with debugging)
+* Separate proc and memory debugging into separate #defines.
+* BUGFIX: Fix message when configure fails due to
+  missing libraries
+  (thanks to Jon)
+* BUGFIX: Don't truncate value when displaying a very large
+  process
+  (thanks to Bo Liu)
 
 What's new in version 0.6.4
 

CheckItem.c

@@ -1,58 +0,0 @@
-/*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
-in the source distribution for its full text.
-*/
-
-#include "CheckItem.h"
-#include "Object.h"
-#include "CRT.h"
-
-#include "debug.h"
-
-/*{
-
-typedef struct CheckItem_ {
-   Object super;
-   char* text;
-   bool* value;
-} CheckItem;
-
-}*/
-
-#ifdef DEBUG
-char* CHECKITEM_CLASS = "CheckItem";
-#else
-#define CHECKITEM_CLASS NULL
-#endif
-
-CheckItem* CheckItem_new(char* text, bool* value) {
-   CheckItem* this = malloc(sizeof(CheckItem));
-   Object_setClass(this, CHECKITEM_CLASS);
-   ((Object*)this)->display = CheckItem_display;
-   ((Object*)this)->delete = CheckItem_delete;
-   this->text = text;
-   this->value = value;
-   return this;
-}
-
-void CheckItem_delete(Object* cast) {
-   CheckItem* this = (CheckItem*)cast;
-   assert (this != NULL);
-
-   free(this->text);
-   free(this);
-}
-
-void CheckItem_display(Object* cast, RichString* out) {
-   CheckItem* this = (CheckItem*)cast;
-   assert (this != NULL);
-   RichString_write(out, CRT_colors[CHECK_BOX], "[");
-   if (*(this->value))
-      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);
-}

CheckItem.h

@@ -1,37 +0,0 @@
-/* Do not edit this file. It was automatically generated. */
-
-#ifndef HEADER_CheckItem
-#define HEADER_CheckItem
-/*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
-in the source distribution for its full text.
-*/
-
-#include "Object.h"
-#include "CRT.h"
-
-#include "debug.h"
-
-
-typedef struct CheckItem_ {
-   Object super;
-   char* text;
-   bool* value;
-} CheckItem;
-
-
-#ifdef DEBUG
-extern char* CHECKITEM_CLASS;
-#else
-#define CHECKITEM_CLASS NULL
-#endif
-
-CheckItem* CheckItem_new(char* text, bool* value);
-
-void CheckItem_delete(Object* cast);
-
-void CheckItem_display(Object* cast, RichString* out);
-
-#endif

ClockMeter.c

@@ -1,36 +1,43 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - ClockMeter.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 "config.h" // IWYU pragma: keep
+
 #include "ClockMeter.h"
-#include "Meter.h"
 
 #include <time.h>
 
-#include "debug.h"
+#include "CRT.h"
+#include "Object.h"
 
-int ClockMeter_attributes[] = {
+
+static const int ClockMeter_attributes[] = {
    CLOCK
 };
 
-MeterType ClockMeter = {
-   .setValues = ClockMeter_setValues, 
-   .display = NULL,
-   .mode = TEXT_METERMODE,
-   .total = 100.0,
-   .items = 1,
+static void ClockMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   time_t t = time(NULL);
+   struct tm result;
+   struct tm* lt = localtime_r(&t, &result);
+   this->values[0] = lt->tm_hour * 60 + lt->tm_min;
+   strftime(buffer, size, "%H:%M:%S", lt);
+}
+
+const MeterClass ClockMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete
+   },
+   .updateValues = ClockMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 1440, /* 24*60 */
    .attributes = ClockMeter_attributes,
    .name = "Clock",
    .uiName = "Clock",
    .caption = "Time: ",
 };
-
-void ClockMeter_setValues(Meter* this, char* buffer, int size) {
-   time_t t = time(NULL);
-   struct tm *lt = localtime(&t);
-   this->values[0] = lt->tm_hour * 60 + lt->tm_min;
-   strftime(buffer, size, "%H:%M:%S", lt);
-}

ClockMeter.h

@@ -1,24 +1,14 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ClockMeter
 #define HEADER_ClockMeter
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - ClockMeter.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 "Meter.h"
 
-#include <time.h>
-
-#include "debug.h"
-
-extern int ClockMeter_attributes[];
-
-extern MeterType ClockMeter;
-
-void ClockMeter_setValues(Meter* this, char* buffer, int size);
+extern const MeterClass ClockMeter_class;
 
 #endif

ColorsPanel.c

@@ -1,70 +1,53 @@
+/*
+htop - ColorsPanel.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 "CRT.h"
 #include "ColorsPanel.h"
 
-#include "Panel.h"
-#include "CheckItem.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "Object.h"
+#include "OptionItem.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "Vector.h"
 
-#include "debug.h"
-#include <assert.h>
 
 // TO ADD A NEW SCHEME:
 // * Increment the size of bool check in ColorsPanel.h
-// * Add the entry in the ColorSchemes array below in the file
+// * 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
 
-/*{
 
-typedef struct ColorsPanel_ {
-   Panel super;
+static const char* const ColorsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
-   Settings* settings;
-   ScreenManager* scr;
-   bool check[5];
-} ColorsPanel;
-
-}*/
-
-static char* ColorSchemes[] = {
+static const char* const ColorSchemeNames[] = {
    "Default",
    "Monochromatic",
    "Black on White",
    "Light Terminal",
    "MC",
    "Black Night",
+   "Broken Gray",
    NULL
 };
 
-ColorsPanel* ColorsPanel_new(Settings* settings, ScreenManager* scr) {
-   ColorsPanel* this = (ColorsPanel*) malloc(sizeof(ColorsPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, CHECKITEM_CLASS, true);
-   ((Object*)this)->delete = ColorsPanel_delete;
-
-   this->settings = settings;
-   this->scr = scr;
-   super->eventHandler = ColorsPanel_EventHandler;
-
-   Panel_setHeader(super, "Colors");
-   for (int i = 0; ColorSchemes[i] != NULL; i++) {
-      Panel_add(super, (Object*) CheckItem_new(String_copy(ColorSchemes[i]), &(this->check[i])));
-      this->check[i] = false;
-   }
-   this->check[settings->colorScheme] = true;
-   return this;
-}
-
-void ColorsPanel_delete(Object* object) {
+static void ColorsPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    ColorsPanel* this = (ColorsPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-HandlerResult ColorsPanel_EventHandler(Panel* super, int ch) {
+static HandlerResult ColorsPanel_eventHandler(Panel* super, int ch) {
    ColorsPanel* this = (ColorsPanel*) super;
 
    HandlerResult result = IGNORED;
@@ -74,21 +57,25 @@ HandlerResult ColorsPanel_EventHandler(Panel* super, int ch) {
    case 0x0a:
    case 0x0d:
    case KEY_ENTER:
+   case KEY_MOUSE:
+   case KEY_RECLICK:
    case ' ':
-      for (int i = 0; ColorSchemes[i] != NULL; i++) {
-         this->check[i] = false;
-      }
-      this->check[mark] = true;
+      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;
    }
 
    if (result == HANDLED) {
       this->settings->changed = true;
-      Header* header = this->settings->header;
+      const Header* header = this->scr->header;
       CRT_setColors(mark);
-      Panel* menu = (Panel*) Vector_get(this->scr->items, 0);
+      clear();
+      Panel* menu = (Panel*) Vector_get(this->scr->panels, 0);
       Header_draw(header);
+      FunctionBar_draw(super->currentBar);
       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);
@@ -96,3 +83,27 @@ HandlerResult ColorsPanel_EventHandler(Panel* super, int ch) {
    return result;
 }
 
+const PanelClass ColorsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = ColorsPanel_delete
+   },
+   .eventHandler = ColorsPanel_eventHandler
+};
+
+ColorsPanel* ColorsPanel_new(Settings* settings, ScreenManager* scr) {
+   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;
+
+   Panel_setHeader(super, "Colors");
+   for (int i = 0; ColorSchemeNames[i] != NULL; i++) {
+      Panel_add(super, (Object*) CheckItem_newByVal(ColorSchemeNames[i], false));
+   }
+   CheckItem_set((CheckItem*)Panel_get(super, settings->colorScheme), true);
+   return this;
+}

ColorsPanel.h

@@ -1,39 +1,25 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ColorsPanel
 #define HEADER_ColorsPanel
-
-#include "CRT.h"
+/*
+htop - ColorsPanel.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 "Panel.h"
-#include "CheckItem.h"
-#include "Settings.h"
 #include "ScreenManager.h"
-
-#include "debug.h"
-#include <assert.h>
-
-// TO ADD A NEW SCHEME:
-// * Increment the size of bool check in ColorsPanel.h
-// * Add the entry in the ColorSchemes 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 "Settings.h"
 
 typedef struct ColorsPanel_ {
    Panel super;
 
    Settings* settings;
    ScreenManager* scr;
-   bool check[5];
 } ColorsPanel;
 
+extern const PanelClass ColorsPanel_class;
 
 ColorsPanel* ColorsPanel_new(Settings* settings, ScreenManager* scr);
 
-void ColorsPanel_delete(Object* object);
-
-HandlerResult ColorsPanel_EventHandler(Panel* super, int ch);
-
-
 #endif

ColumnsPanel.c

@@ -1,81 +1,64 @@
+/*
+htop - ColumnsPanel.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 "ColumnsPanel.h"
 
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include <ctype.h>
+#include <stdlib.h>
 
-#include "debug.h"
-#include <assert.h>
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "Process.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-/*{
 
-typedef struct ColumnsPanel_ {
-   Panel super;
+static const char* const ColumnsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "MoveUp", "MoveDn", "Remove", "Done  ", NULL};
 
-   Settings* settings;
-   ScreenManager* scr;
-} ColumnsPanel;
-
-}*/
-
-ColumnsPanel* ColumnsPanel_new(Settings* settings, ScreenManager* scr) {
-   ColumnsPanel* this = (ColumnsPanel*) malloc(sizeof(ColumnsPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, LISTITEM_CLASS, true);
-   ((Object*)this)->delete = ColumnsPanel_delete;
-
-   this->settings = settings;
-   this->scr = scr;
-   super->eventHandler = ColumnsPanel_eventHandler;
-   Panel_setHeader(super, "Active Columns");
-
-   ProcessField* fields = this->settings->pl->fields;
-   for (; *fields; fields++) {
-      Panel_add(super, (Object*) ListItem_new(Process_fieldNames[*fields], 0));
-   }
-   return this;
-}
-
-void ColumnsPanel_delete(Object* object) {
+static void ColumnsPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    ColumnsPanel* this = (ColumnsPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-int ColumnsPanel_fieldNameToIndex(const char* name) {
-   for (int j = 1; j <= LAST_PROCESSFIELD; j++) {
-      if (String_eq(name, Process_fieldNames[j])) {
-         return j;
-      }
-   }
-   return 0;
-}
-
-void ColumnsPanel_update(Panel* super) {
-   ColumnsPanel* this = (ColumnsPanel*) super;
-   int size = Panel_getSize(super);
-   this->settings->changed = true;
-   // FIXME: this is crappily inefficient
-   free(this->settings->pl->fields);
-   this->settings->pl->fields = (ProcessField*) malloc(sizeof(ProcessField) * (size+1));
-   for (int i = 0; i < size; i++) {
-      char* text = ((ListItem*) Panel_get(super, i))->value;
-          int j = ColumnsPanel_fieldNameToIndex(text);
-          if (j > 0)
-             this->settings->pl->fields[i] = j;
-   }
-   this->settings->pl->fields[size] = 0;
-}
-
-HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
+static HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
+   ColumnsPanel* const this = (ColumnsPanel*) super;
 
    int selected = Panel_getSelectedIndex(super);
    HandlerResult result = IGNORED;
-   int size = Panel_getSize(super);
+   int size = Panel_size(super);
 
    switch(ch) {
+      case 0x0a:
+      case 0x0d:
+      case KEY_ENTER:
+      case KEY_MOUSE:
+      case KEY_RECLICK:
+      {
+         if (selected < size - 1) {
+            this->moving = !(this->moving);
+            Panel_setSelectionColor(super, this->moving ? CRT_colors[PANEL_SELECTION_FOLLOW] : CRT_colors[PANEL_SELECTION_FOCUS]);
+            ListItem* selectedItem = (ListItem*) Panel_getSelected(super);
+            if (selectedItem)
+               selectedItem->moving = this->moving;
+            result = HANDLED;
+         }
+         break;
+      }
+      case KEY_UP:
+      {
+         if (!this->moving) {
+            break;
+         }
+      }
+         /* else fallthrough */
       case KEY_F(7):
       case '[':
       case '-':
@@ -85,6 +68,13 @@ HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
          result = HANDLED;
          break;
       }
+      case KEY_DOWN:
+      {
+         if (!this->moving) {
+            break;
+         }
+      }
+         /* else fallthrough */
       case KEY_F(8):
       case ']':
       case '+':
@@ -103,8 +93,57 @@ HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch) {
          result = HANDLED;
          break;
       }
+      default:
+      {
+         if (0 < ch && ch < 255 && isgraph((unsigned char)ch))
+            result = Panel_selectByTyping(super, ch);
+         if (result == BREAK_LOOP)
+            result = IGNORED;
+         break;
+      }
    }
    if (result == HANDLED)
       ColumnsPanel_update(super);
    return result;
 }
+
+const PanelClass ColumnsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = ColumnsPanel_delete
+   },
+   .eventHandler = ColumnsPanel_eventHandler
+};
+
+ColumnsPanel* ColumnsPanel_new(Settings* settings) {
+   ColumnsPanel* this = AllocThis(ColumnsPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(ColumnsFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+
+   this->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;
+}
+
+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->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;
+   }
+   this->settings->fields[size] = 0;
+}

ColumnsPanel.h

@@ -1,33 +1,28 @@
-/* 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 GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
 
+#include <stdbool.h>
 
 #include "Panel.h"
 #include "Settings.h"
-#include "ScreenManager.h"
-
-#include "debug.h"
-#include <assert.h>
-
 
 typedef struct ColumnsPanel_ {
    Panel super;
 
    Settings* settings;
-   ScreenManager* scr;
+   bool moving;
 } ColumnsPanel;
 
+extern const PanelClass ColumnsPanel_class;
 
-ColumnsPanel* ColumnsPanel_new(Settings* settings, ScreenManager* scr);
-
-void ColumnsPanel_delete(Object* object);
-
-int ColumnsPanel_fieldNameToIndex(const char* name);
+ColumnsPanel* ColumnsPanel_new(Settings* settings);
 
 void ColumnsPanel_update(Panel* super);
 
-HandlerResult ColumnsPanel_eventHandler(Panel* super, int ch);
-
 #endif

CommandScreen.c

@@ -0,0 +1,68 @@
+#include "config.h" // IWYU pragma: keep
+
+#include "CommandScreen.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "Macros.h"
+#include "Panel.h"
+#include "ProvideCurses.h"
+#include "XUtils.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 = xMalloc(COLS + 1);
+   int line_offset = 0, last_spc = -1, len;
+   for (; *p != '\0'; p++, line_offset++) {
+      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);
+   }
+
+   free(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 - 3, " ");
+}
+
+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 != 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 +1,50 @@
+/*
+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 "CRT.h"
+#include "Object.h"
+
+
+static const int DateMeter_attributes[] = {
+   DATE
+};
+
+static void DateMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   time_t t = time(NULL);
+   struct tm result;
+   struct tm* lt = localtime_r(&t, &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(buffer, size, "%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 +1,14 @@
+#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 +1,50 @@
+/*
+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 "CRT.h"
+#include "Object.h"
+
+
+static const int DateTimeMeter_attributes[] = {
+   DATETIME
+};
+
+static void DateTimeMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   time_t t = time(NULL);
+   struct tm result;
+   struct tm* lt = localtime_r(&t, &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(buffer, size, "%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 +1,14 @@
+#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

DebugMemory.c

@@ -1,223 +0,0 @@
-
-#define _GNU_SOURCE
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
-#include <assert.h>
-
-#undef strdup
-#undef malloc
-#undef realloc
-#undef calloc
-#undef free
-
-#include "DebugMemory.h"
-
-/*{
-
-typedef struct DebugMemoryItem_ DebugMemoryItem;
-
-struct DebugMemoryItem_ {
-   int magic;
-   void* data;
-   char* file;
-   int line;
-   DebugMemoryItem* next;
-};
-
-typedef struct DebugMemory_ {
-   DebugMemoryItem* first;
-   int allocations;
-   int deallocations;
-   int size;
-   bool totals;
-   FILE* file;
-} DebugMemory;
-
-}*/
-
-#if defined(DEBUG)
-
-static DebugMemory* singleton = NULL;
-
-void DebugMemory_new() {
-   if (singleton)
-      return;
-   singleton = malloc(sizeof(DebugMemory));
-   singleton->first = NULL;
-   singleton->allocations = 0;
-   singleton->deallocations = 0;
-   singleton->size = 0;
-   singleton->file = fopen("/tmp/htop-debug-alloc.txt", "w");
-   singleton->totals = true;
-   //singleton->file = NULL;
-}
-
-void* DebugMemory_malloc(int size, char* file, int line, char* str) {
-   void* data = malloc(size);
-   DebugMemory_registerAllocation(data, file, line);
-   if (singleton->file) {
-      if (singleton->totals) fprintf(singleton->file, "%d\t", singleton->size);
-      fprintf(singleton->file, "%d\t%s:%d (%s)\n", size, file, line, str);
-   }
-   return data;
-}
-
-void* DebugMemory_calloc(int a, int b, char* file, int line) {
-   void* data = calloc(a, b);
-   DebugMemory_registerAllocation(data, file, line);
-   if (singleton->file) {
-      if (singleton->totals) fprintf(singleton->file, "%d\t", singleton->size);
-      fprintf(singleton->file, "%d\t%s:%d\n", a*b, file, line);
-   }
-   return data;
-}
-
-void* DebugMemory_realloc(void* ptr, int size, char* file, int line, char* str) {
-   if (ptr != NULL)
-      DebugMemory_registerDeallocation(ptr, file, line);
-   void* data = realloc(ptr, size);
-   DebugMemory_registerAllocation(data, file, line);
-   if (singleton->file) {
-      if (singleton->totals) fprintf(singleton->file, "%d\t", singleton->size);
-      fprintf(singleton->file, "%d\t%s:%d (%s)\n", size, file, line, str);
-   }
-   return data;
-}
-
-void* DebugMemory_strdup(char* str, char* file, int line) {
-   assert(str);
-   char* data = strdup(str);
-   DebugMemory_registerAllocation(data, file, line);
-   if (singleton->file) {
-      if (singleton->totals) fprintf(singleton->file, "%d\t", singleton->size);
-      fprintf(singleton->file, "%d\t%s:%d\n", (int) strlen(str), file, line);
-   }
-   return data;
-}
-
-void DebugMemory_free(void* data, char* file, int line) {
-   assert(data);
-   DebugMemory_registerDeallocation(data, file, line);
-   if (singleton->file) {
-      if (singleton->totals) fprintf(singleton->file, "%d\t", singleton->size);
-      fprintf(singleton->file, "free\t%s:%d\n", file, line);
-   }
-   free(data);
-}
-
-void DebugMemory_assertSize() {
-   if (!singleton->first) {
-      assert (singleton->size == 0);
-   }
-   DebugMemoryItem* walk = singleton->first;
-   int i = 0;
-   while (walk != NULL) {
-      assert(walk->magic == 11061980);
-      i++;
-      walk = walk->next;
-   }
-   assert (i == singleton->size);
-}
-
-int DebugMemory_getBlockCount() {
-   if (!singleton->first) {
-      return 0;
-   }
-   DebugMemoryItem* walk = singleton->first;
-   int i = 0;
-   while (walk != NULL) {
-      assert(walk->magic == 11061980);
-      i++;
-      walk = walk->next;
-   }
-   return i;
-}
-
-void DebugMemory_registerAllocation(void* data, char* file, int line) {
-   if (!singleton)
-      DebugMemory_new();
-   DebugMemory_assertSize();
-   DebugMemoryItem* item = (DebugMemoryItem*) malloc(sizeof(DebugMemoryItem));
-   item->magic = 11061980;
-   item->data = data;
-   item->file = file;
-   item->line = line;
-   item->next = NULL;
-   int val = DebugMemory_getBlockCount();
-   if (singleton->first == NULL) {
-      assert (val == 0);
-      singleton->first = item;
-   } else {
-      DebugMemoryItem* walk = singleton->first;
-      while (true) {
-         if (walk->next == NULL) {
-            walk->next = item;
-            break;
-         }
-         assert(walk->magic == 11061980);
-         walk = walk->next;
-      }
-   }
-   int nval = DebugMemory_getBlockCount();
-   assert(nval == val + 1);
-   singleton->allocations++;
-   singleton->size++;
-   DebugMemory_assertSize();
-}
-
-void DebugMemory_registerDeallocation(void* data, char* file, int line) {
-   assert(singleton);
-   assert(singleton->first);
-   DebugMemoryItem* walk = singleton->first;
-   DebugMemoryItem* prev = NULL;
-   int val = DebugMemory_getBlockCount();
-   while (walk != NULL) {
-      assert(walk->magic == 11061980);
-      if (walk->data == data) {
-         if (prev == NULL) {
-            singleton->first = walk->next;
-         } else {
-            prev->next = walk->next;
-         }
-         free(walk);
-         assert(DebugMemory_getBlockCount() == val - 1);
-         singleton->deallocations++;
-         singleton->size--;
-         DebugMemory_assertSize();
-         return;
-      }
-      DebugMemoryItem* tmp = walk;
-      walk = walk->next;
-      prev = tmp;
-   }
-   DebugMemory_report();
-   fprintf(stderr, "Couldn't find allocation for memory freed at %s:%d\n", file, line);
-   assert(false);
-}
-
-void DebugMemory_report() {
-   assert(singleton);
-   DebugMemoryItem* walk = singleton->first;
-   int i = 0;
-   while (walk != NULL) {
-      assert(walk->magic == 11061980);
-      i++;
-      fprintf(stderr, "%p %s:%d\n", walk->data, walk->file, walk->line);
-      walk = walk->next;
-   }
-   fprintf(stderr, "Total:\n");
-   fprintf(stderr, "%d allocations\n", singleton->allocations);
-   fprintf(stderr, "%d deallocations\n", singleton->deallocations);
-   fprintf(stderr, "%d size\n", singleton->size);
-   fprintf(stderr, "%d non-freed blocks\n", i);
-   if (singleton->file)
-      fclose(singleton->file);
-}
-
-#elif defined(DEBUGLITE)
-
-//#include "efence.h"
-
-#endif

DebugMemory.h

@@ -1,71 +0,0 @@
-/* Do not edit this file. It was automatically generated. */
-
-#ifndef HEADER_DebugMemory
-#define HEADER_DebugMemory
-
-#define _GNU_SOURCE
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
-#include <assert.h>
-
-#undef strdup
-#undef malloc
-#undef realloc
-#undef calloc
-#undef free
-
-
-
-typedef struct DebugMemoryItem_ DebugMemoryItem;
-
-struct DebugMemoryItem_ {
-   int magic;
-   void* data;
-   char* file;
-   int line;
-   DebugMemoryItem* next;
-};
-
-typedef struct DebugMemory_ {
-   DebugMemoryItem* first;
-   int allocations;
-   int deallocations;
-   int size;
-   bool totals;
-   FILE* file;
-} DebugMemory;
-
-
-#if defined(DEBUG)
-
-void DebugMemory_new();
-
-void* DebugMemory_malloc(int size, char* file, int line, char* str);
-
-void* DebugMemory_calloc(int a, int b, char* file, int line);
-
-void* DebugMemory_realloc(void* ptr, int size, char* file, int line, char* str);
-
-void* DebugMemory_strdup(char* str, char* file, int line);
-
-void DebugMemory_free(void* data, char* file, int line);
-
-void DebugMemory_assertSize();
-
-int DebugMemory_getBlockCount();
-
-void DebugMemory_registerAllocation(void* data, char* file, int line);
-
-void DebugMemory_registerDeallocation(void* data, char* file, int line);
-
-void DebugMemory_report();
-
-#elif defined(DEBUGLITE)
-
-//#include "efence.h"
-
-#endif
-
-#endif

DiskIOMeter.c

@@ -0,0 +1,124 @@
+/*
+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 <sys/time.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.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 unsigned long int cached_read_diff = 0;
+static unsigned long int cached_write_diff = 0;
+static double cached_utilisation_diff = 0.0;
+
+static void DiskIOMeter_updateValues(Meter* this, char* buffer, size_t len) {
+   static unsigned long long int cached_last_update = 0;
+
+   struct timeval tv;
+   gettimeofday(&tv, NULL);
+   unsigned long long int timeInMilliSeconds = (unsigned long long int)tv.tv_sec * 1000 + (unsigned long long int)tv.tv_usec / 1000;
+   unsigned long long int passedTimeInMs = timeInMilliSeconds - cached_last_update;
+
+   /* update only every 500ms */
+   if (passedTimeInMs > 500) {
+      static unsigned long int cached_read_total = 0;
+      static unsigned long int cached_write_total = 0;
+      static unsigned long int cached_msTimeSpend_total = 0;
+
+      cached_last_update = timeInMilliSeconds;
+
+      DiskIOData data;
+
+      hasData = Platform_getDiskIO(&data);
+      if (!hasData) {
+         this->values[0] = 0;
+         xSnprintf(buffer, len, "no data");
+         return;
+      }
+
+      if (data.totalBytesRead > cached_read_total) {
+         cached_read_diff = (data.totalBytesRead - cached_read_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
+      } else {
+         cached_read_diff = 0;
+      }
+      cached_read_total = data.totalBytesRead;
+
+      if (data.totalBytesWritten > cached_write_total) {
+         cached_write_diff = (data.totalBytesWritten - cached_write_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
+      } else {
+         cached_write_diff = 0;
+      }
+      cached_write_total = data.totalBytesWritten;
+
+      if (data.totalMsTimeSpend > cached_msTimeSpend_total) {
+         cached_utilisation_diff = 100 * (double)(data.totalMsTimeSpend - cached_msTimeSpend_total) / 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(buffer, len, "%sB %sB %.1f%%", bufferRead, bufferWrite, cached_utilisation_diff);
+}
+
+static void DIskIOMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
+   if (!hasData) {
+      RichString_write(out, CRT_colors[METER_VALUE_ERROR], "no data");
+      return;
+   }
+
+   char buffer[16];
+
+   int color = cached_utilisation_diff > 40.0 ? METER_VALUE_NOTICE : METER_VALUE;
+   xSnprintf(buffer, sizeof(buffer), "%.1f%%", cached_utilisation_diff);
+   RichString_write(out, CRT_colors[color], buffer);
+
+   RichString_append(out, CRT_colors[METER_TEXT], " read: ");
+   Meter_humanUnit(buffer, cached_read_diff, sizeof(buffer));
+   RichString_append(out, CRT_colors[METER_VALUE_IOREAD], buffer);
+
+   RichString_append(out, CRT_colors[METER_TEXT], " write: ");
+   Meter_humanUnit(buffer, cached_write_diff, sizeof(buffer));
+   RichString_append(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 +1,20 @@
+#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_ {
+   unsigned long int totalBytesRead;
+   unsigned long int totalBytesWritten;
+   unsigned long int totalMsTimeSpend;
+} DiskIOData;
+
+extern const MeterClass DiskIOMeter_class;
+
+#endif /* HEADER_DiskIOMeter */

DisplayOptionsPanel.c

@@ -1,76 +1,130 @@
+/*
+htop - DisplayOptionsPanel.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 "config.h" // IWYU pragma: keep
 
 #include "DisplayOptionsPanel.h"
 
-#include "Panel.h"
-#include "CheckItem.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include <stdbool.h>
+#include <stdlib.h>
 
-#include "debug.h"
-#include <assert.h>
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Header.h"
+#include "Object.h"
+#include "OptionItem.h"
+#include "ProvideCurses.h"
 
-/*{
 
-typedef struct DisplayOptionsPanel_ {
-   Panel super;
+static const char* const DisplayOptionsFunctions[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "Done  ", NULL};
 
-   Settings* settings;
-   ScreenManager* scr;
-} DisplayOptionsPanel;
-
-}*/
-
-DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager* scr) {
-   DisplayOptionsPanel* this = (DisplayOptionsPanel*) malloc(sizeof(DisplayOptionsPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, CHECKITEM_CLASS, true);
-   ((Object*)this)->delete = DisplayOptionsPanel_delete;
-
-   this->settings = settings;
-   this->scr = scr;
-   super->eventHandler = DisplayOptionsPanel_EventHandler;
-
-   Panel_setHeader(super, "Display options");
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Tree view"), &(settings->pl->treeView)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Shadow other users' processes"), &(settings->pl->shadowOtherUsers)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Hide kernel threads"), &(settings->pl->hideKernelThreads)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Hide userland threads"), &(settings->pl->hideUserlandThreads)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Highlight program \"basename\""), &(settings->pl->highlightBaseName)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Highlight megabytes in memory counters"), &(settings->pl->highlightMegabytes)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Leave a margin around header"), &(settings->header->margin)));
-   Panel_add(super, (Object*) CheckItem_new(String_copy("Split System Time into System/IO-Wait/Hard-IRQ/Soft-IRQ"), &(settings->pl->expandSystemTime)));
-   return this;
-}
-
-void DisplayOptionsPanel_delete(Object* object) {
+static void DisplayOptionsPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    DisplayOptionsPanel* this = (DisplayOptionsPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-HandlerResult DisplayOptionsPanel_EventHandler(Panel* super, int ch) {
+static HandlerResult DisplayOptionsPanel_eventHandler(Panel* super, int ch) {
    DisplayOptionsPanel* this = (DisplayOptionsPanel*) super;
 
    HandlerResult result = IGNORED;
-   CheckItem* selected = (CheckItem*) Panel_getSelected(super);
+   OptionItem* selected = (OptionItem*) Panel_getSelected(super);
 
    switch (ch) {
-   case 0x0a:
-   case 0x0d:
+   case '\n':
+   case '\r':
    case KEY_ENTER:
+   case KEY_MOUSE:
+   case KEY_RECLICK:
    case ' ':
-      *(selected->value) = ! *(selected->value);
+      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;
-      Header* header = this->settings->header;
+      Header* header = this->scr->header;
       Header_calculateHeight(header);
+      Header_reinit(header);
       Header_draw(header);
       ScreenManager_resize(this->scr, this->scr->x1, header->height, this->scr->x2, this->scr->y2);
    }
    return result;
 }
 
+const PanelClass DisplayOptionsPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = DisplayOptionsPanel_delete
+   },
+   .eventHandler = DisplayOptionsPanel_eventHandler
+};
+
+DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager* scr) {
+   DisplayOptionsPanel* this = AllocThis(DisplayOptionsPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(DisplayOptionsFunctions, NULL, NULL);
+   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("Tree view", &(settings->treeView)));
+   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("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 HAVE_SENSORS_SENSORS_H
+   Panel_add(super, (Object*) CheckItem_newByRef("Also show CPU temperature (requires libsensors)", &(settings->showCPUTemperature)));
+   Panel_add(super, (Object*) CheckItem_newByRef("- Show temperature in degree Fahrenheit instead of Celsius", &(settings->degreeFahrenheit)));
+   #endif
+   Panel_add(super, (Object*) CheckItem_newByRef("Enable the mouse", &(settings->enableMouse)));
+   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));
+   #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 +1,15 @@
-/* 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 GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
 
 #include "Panel.h"
-#include "CheckItem.h"
-#include "Settings.h"
 #include "ScreenManager.h"
-
-#include "debug.h"
-#include <assert.h>
-
+#include "Settings.h"
 
 typedef struct DisplayOptionsPanel_ {
    Panel super;
@@ -20,12 +18,8 @@ typedef struct DisplayOptionsPanel_ {
    ScreenManager* scr;
 } DisplayOptionsPanel;
 
+extern const PanelClass DisplayOptionsPanel_class;
 
 DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager* scr);
 
-void DisplayOptionsPanel_delete(Object* object);
-
-HandlerResult DisplayOptionsPanel_EventHandler(Panel* super, int ch);
-
-
 #endif

EnvScreen.c

@@ -0,0 +1,61 @@
+#include "config.h" // IWYU pragma: keep
+
+#include "EnvScreen.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Panel.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+
+const 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, " ");
+}
+
+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, Process_getCommand(this->process));
+}
+
+void EnvScreen_scan(InfoScreen* this) {
+   Panel* panel = this->display;
+   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)
+         InfoScreen_addLine(this, p);
+      free(env);
+   }
+   else {
+      InfoScreen_addLine(this, "Could not read process environment.");
+   }
+
+   Vector_insertionSort(this->lines);
+   Vector_insertionSort(panel->items);
+   Panel_setSelected(panel, idx);
+}

EnvScreen.h

@@ -0,0 +1,22 @@
+#ifndef HEADER_EnvScreen
+#define HEADER_EnvScreen
+
+#include "InfoScreen.h"
+#include "Object.h"
+#include "Process.h"
+
+typedef struct EnvScreen_ {
+   InfoScreen super;
+} EnvScreen;
+
+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

@@ -1,125 +1,147 @@
 /*
 htop - FunctionBar.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Object.h"
+#include "config.h" // IWYU pragma: keep
+
 #include "FunctionBar.h"
-#include "CRT.h"
 
-#include "debug.h"
-#include <assert.h>
-
-#include <string.h>
 #include <stdlib.h>
-#include <stdbool.h>
-#include <curses.h>
+#include <string.h>
 
-/*{
+#include "CRT.h"
+#include "Macros.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef struct FunctionBar_ {
-   Object super;
-   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};
 
-#ifdef DEBUG
-char* FUNCTIONBAR_CLASS = "FunctionBar";
-#else
-#define FUNCTIONBAR_CLASS NULL
-#endif
+static const char* const FunctionBar_FLabels[] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", NULL};
 
-static char* FunctionBar_FKeys[10] = {"F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10"};
+static int FunctionBar_FEvents[] = {KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10)};
 
-static char* FunctionBar_FLabels[10] = {"      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      ", "      "};
+static const char* const FunctionBar_EnterEscKeys[] = {"Enter", "Esc", NULL};
+static const int FunctionBar_EnterEscEvents[] = {13, 27};
 
-static int FunctionBar_FEvents[10] = {KEY_F(1), KEY_F(2), KEY_F(3), KEY_F(4), KEY_F(5), KEY_F(6), KEY_F(7), KEY_F(8), KEY_F(9), KEY_F(10)};
+static int currentLen = 0;
 
-FunctionBar* FunctionBar_new(int size, char** functions, char** keys, int* events) {
-   FunctionBar* this = malloc(sizeof(FunctionBar));
-   Object_setClass(this, FUNCTIONBAR_CLASS);
-   ((Object*) this)->delete = FunctionBar_delete;
-   this->functions = functions;
-   this->size = size;
+FunctionBar* FunctionBar_newEnterEsc(const char* enter, const char* esc) {
+   const char* functions[] = {enter, esc, NULL};
+   return FunctionBar_new(functions, FunctionBar_EnterEscKeys, FunctionBar_EnterEscEvents);
+}
+
+FunctionBar* FunctionBar_new(const char* const* functions, const char* const* keys, const int* events) {
+   FunctionBar* this = xCalloc(1, sizeof(FunctionBar));
+   this->functions = xCalloc(16, sizeof(char*));
+   if (!functions) {
+      functions = FunctionBar_FLabels;
+   }
+   for (int i = 0; i < 15 && functions[i]; i++) {
+      this->functions[i] = xStrdup(functions[i]);
+   }
    if (keys && events) {
       this->staticData = false;
-      this->functions = malloc(sizeof(char*) * size);
-      this->keys = malloc(sizeof(char*) * size);
-      this->events = malloc(sizeof(int) * size);
-      for (int i = 0; i < size; i++) {
-         this->functions[i] = String_copy(functions[i]);
-         this->keys[i] = String_copy(keys[i]);
+      this->keys.keys = xCalloc(15, sizeof(char*));
+      this->events = xCalloc(15, sizeof(int));
+      int i = 0;
+      while (i < 15 && functions[i]) {
+         this->keys.keys[i] = xStrdup(keys[i]);
          this->events[i] = events[i];
+         i++;
       }
+      this->size = i;
    } else {
       this->staticData = true;
-      this->functions = functions ? functions : FunctionBar_FLabels;
-      this->keys = FunctionBar_FKeys;
+      this->keys.constKeys = FunctionBar_FKeys;
       this->events = FunctionBar_FEvents;
-      assert((!functions) || this->size == 10);
+      this->size = ARRAYSIZE(FunctionBar_FEvents);
    }
    return this;
 }
 
-void FunctionBar_delete(Object* cast) {
-   FunctionBar* this = (FunctionBar*) cast;
-   if (!this->staticData) {
-      for (int i = 0; i < this->size; i++) {
+void FunctionBar_delete(FunctionBar* this) {
+   for (int i = 0; i < 15 && this->functions[i]; i++) {
       free(this->functions[i]);
-         free(this->keys[i]);
    }
    free(this->functions);
-      free(this->keys);
+   if (!this->staticData) {
+      for (int i = 0; i < this->size; i++) {
+         free(this->keys.keys[i]);
+      }
+      free(this->keys.keys);
       free(this->events);
    }
    free(this);
 }
 
-void FunctionBar_setLabel(FunctionBar* this, int event, char* text) {
-   assert(!this->staticData);
+void FunctionBar_setLabel(FunctionBar* this, int event, const char* text) {
    for (int i = 0; i < this->size; i++) {
       if (this->events[i] == event) {
          free(this->functions[i]);
-         this->functions[i] = String_copy(text);
+         this->functions[i] = xStrdup(text);
          break;
       }
    }
 }
 
-void FunctionBar_draw(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(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);
    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]);
       x += strlen(this->functions[i]);
    }
-   if (buffer != NULL) {
+
+   if (buffer) {
+      if (attr == -1) {
+         attrset(CRT_colors[FUNCTION_BAR]);
+      } else {
          attrset(attr);
-      mvaddstr(LINES-1, x, buffer);
       }
+      mvaddstr(LINES - 1, x, buffer);
       attrset(CRT_colors[RESET_COLOR]);
+      x += strlen(buffer);
    }
 
-int FunctionBar_synthesizeEvent(FunctionBar* this, int pos) {
+   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, buffer);
+   attrset(CRT_colors[RESET_COLOR]);
+
+   currentLen += strlen(buffer);
+}
+
+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

@@ -1,52 +1,39 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_FunctionBar
 #define HEADER_FunctionBar
 /*
 htop - FunctionBar.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Object.h"
-#include "CRT.h"
-
-#include "debug.h"
-#include <assert.h>
-
-#include <string.h>
-#include <stdlib.h>
 #include <stdbool.h>
-#include <curses.h>
-
 
 typedef struct FunctionBar_ {
-   Object super;
    int size;
    char** functions;
+   union {
       char** keys;
+      const char* const* constKeys;
+   } keys;
    int* events;
    bool staticData;
 } FunctionBar;
 
+FunctionBar* FunctionBar_newEnterEsc(const char* enter, const char* esc);
 
-#ifdef DEBUG
-extern char* FUNCTIONBAR_CLASS;
-#else
-#define FUNCTIONBAR_CLASS NULL
-#endif
+FunctionBar* FunctionBar_new(const char* const* functions, const char* const* keys, const int* events);
 
-FunctionBar* FunctionBar_new(int size, char** functions, char** keys, int* events);
+void FunctionBar_delete(FunctionBar* this);
 
-void FunctionBar_delete(Object* cast);
+void FunctionBar_setLabel(FunctionBar* this, int event, const char* text);
 
-void FunctionBar_setLabel(FunctionBar* this, int event, char* text);
+void FunctionBar_draw(const FunctionBar* this);
 
-void FunctionBar_draw(FunctionBar* this, char* buffer);
+void FunctionBar_drawExtra(const FunctionBar* this, const char* buffer, int attr, bool setCursor);
 
-void FunctionBar_drawAttr(FunctionBar* this, char* buffer, int attr);
+void FunctionBar_append(const char* buffer, int attr);
 
-int FunctionBar_synthesizeEvent(FunctionBar* this, int pos);
+int FunctionBar_synthesizeEvent(const FunctionBar* this, int pos);
 
 #endif

Hashtable.c

@@ -1,136 +1,305 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - Hashtable.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 "config.h" // IWYU pragma: keep
+
 #include "Hashtable.h"
 
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
-#include <stdbool.h>
+#include <string.h>
 
-#include "debug.h"
+#include "Macros.h"
+#include "XUtils.h"
 
-/*{
-typedef struct Hashtable_ Hashtable;
 
-typedef void(*Hashtable_PairFunction)(int, void*, void*);
+#ifndef NDEBUG
 
-typedef struct HashtableItem {
-   int key;
-   void* value;
-   struct HashtableItem* next;
-} HashtableItem;
+static void Hashtable_dump(const Hashtable* this) {
+   fprintf(stderr, "Hashtable %p: size=%u items=%u owner=%s\n",
+           (const void*)this,
+           this->size,
+           this->items,
+           this->owner ? "yes" : "no");
 
-struct Hashtable_ {
-   int size;
-   HashtableItem** buckets;
-   int items;
-   bool owner;
-};
-}*/
+   unsigned int items = 0;
+   for (unsigned int i = 0; i < this->size; i++) {
+      fprintf(stderr, "  item %5u: key = %5u probe = %2u value = %p\n",
+              i,
+              this->buckets[i].key,
+              this->buckets[i].probe,
+              this->buckets[i].value ? (const void*)this->buckets[i].value : "(nil)");
 
-HashtableItem* HashtableItem_new(int key, void* value) {
-   HashtableItem* this;
-   
-   this = (HashtableItem*) malloc(sizeof(HashtableItem));
-   this->key = key;
-   this->value = value;
-   this->next = NULL;
-   return this;
+      if (this->buckets[i].value)
+         items++;
    }
 
-Hashtable* Hashtable_new(int size, bool owner) {
+   fprintf(stderr, "Hashtable %p: items=%u counted=%u\n",
+           (const void*)this,
+           this->items,
+           items);
+}
+
+static bool Hashtable_isConsistent(const Hashtable* this) {
+   unsigned int items = 0;
+   for (unsigned int i = 0; i < this->size; i++) {
+      if (this->buckets[i].value)
+         items++;
+   }
+   bool res = items == this->items;
+   if (!res)
+      Hashtable_dump(this);
+   return res;
+}
+
+unsigned int Hashtable_count(const Hashtable* this) {
+   unsigned int items = 0;
+   for (unsigned int i = 0; i < this->size; i++) {
+      if (this->buckets[i].value)
+         items++;
+   }
+   assert(items == this->items);
+   return items;
+}
+
+#endif /* NDEBUG */
+
+/* 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 uint64_t nextPrime(unsigned int n) {
+   assert(n <= OEISprimes[ARRAYSIZE(OEISprimes) - 1]);
+
+   for (unsigned int i = 0; i < ARRAYSIZE(OEISprimes); i++) {
+      if (n <= OEISprimes[i])
+         return OEISprimes[i];
+   }
+
+   return OEISprimes[ARRAYSIZE(OEISprimes) - 1];
+}
+
+Hashtable* Hashtable_new(unsigned int size, bool owner) {
    Hashtable* this;
 
-   this = (Hashtable*) malloc(sizeof(Hashtable));
-   this->size = size;
-   this->buckets = (HashtableItem**) calloc(sizeof(HashtableItem*), size);
+   this = xMalloc(sizeof(Hashtable));
+   this->items = 0;
+   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) {
-   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);
 }
 
-inline int Hashtable_size(Hashtable* this) {
-   return this->items;
-}
+void Hashtable_clear(Hashtable* this) {
+   assert(Hashtable_isConsistent(this));
 
-void Hashtable_put(Hashtable* this, int key, void* value) {
-   int index = key % this->size;
-   HashtableItem** bucketPtr = &(this->buckets[index]);
-   while (true)
-      if (*bucketPtr == NULL) {
-         *bucketPtr = HashtableItem_new(key, value);
-         this->items++;
-         break;
-      } else if ((*bucketPtr)->key == key) {
    if (this->owner)
-            free((*bucketPtr)->value);
-         (*bucketPtr)->value = value;
-         break;
-      } else
-         bucketPtr = &((*bucketPtr)->next);
+      for (unsigned int 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));
 }
 
-void* Hashtable_remove(Hashtable* this, int key) {
-   int index = key % this->size;
-   HashtableItem** bucketPtr = &(this->buckets[index]);
-   while (true)
-      if (*bucketPtr == NULL) {
-         return NULL;
-         break;
-      } else if ((*bucketPtr)->key == key) {
-         void* savedValue = (*bucketPtr)->value;
-         HashtableItem* savedNext = (*bucketPtr)->next;
-         free(*bucketPtr);
-         (*bucketPtr) = savedNext;
-         this->items--;
+static void insert(Hashtable* this, hkey_t key, void* value) {
+   unsigned int index = key % this->size;
+   unsigned int probe = 0;
+#ifndef NDEBUG
+   unsigned int origIndex = index;
+#endif
+
+   for (;;) {
+      if (!this->buckets[index].value) {
+         this->items++;
+         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);
+   }
+}
+
+void Hashtable_setSize(Hashtable* this, unsigned int size) {
+
+   assert(Hashtable_isConsistent(this));
+
+   if (size <= this->items)
+      return;
+
+   HashtableItem* oldBuckets = this->buckets;
+   unsigned int oldSize = this->size;
+
+   this->size = nextPrime(size);
+   this->buckets = (HashtableItem*) xCalloc(this->size, sizeof(HashtableItem));
+   this->items = 0;
+
+   /* rehash */
+   for (unsigned int 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, hkey_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)
+      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, hkey_t key) {
+   unsigned int index = key % this->size;
+   unsigned int probe = 0;
+#ifndef NDEBUG
+   unsigned int 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(savedValue);
-            return NULL;
+            free(this->buckets[index].value);
          } else {
-            return savedValue;
+            res = this->buckets[index].value;
          }
-      } else
-         bucketPtr = &((*bucketPtr)->next);
+
+         unsigned int 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;
          }
-//#include <stdio.h>
-inline void* Hashtable_get(Hashtable* this, int key) {
-   int index = key % this->size;
-   HashtableItem* bucketPtr = this->buckets[index];
-   // fprintf(stderr, "%d -> %d\n", key, index);
-   while (true) {
-      if (bucketPtr == NULL) {
-         return NULL;
-      } else if (bucketPtr->key == key) {
-         return bucketPtr->value;
-      } else
-         bucketPtr = bucketPtr->next;
-      // fprintf(stderr, "*\n");
+
+         /* 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, hkey_t key) {
+   unsigned int index = key % this->size;
+   unsigned int probe = 0;
+   void* res = NULL;
+#ifndef NDEBUG
+   unsigned int 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) {
-   for (int i = 0; i < this->size; i++) {
-      HashtableItem* walk = this->buckets[i];
-      while (walk != NULL) {
+   assert(Hashtable_isConsistent(this));
+   for (unsigned int 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

@@ -1,50 +1,51 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Hashtable
 #define HEADER_Hashtable
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - Hashtable.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 <stdlib.h>
 #include <stdbool.h>
 
-#include "debug.h"
 
-typedef struct Hashtable_ Hashtable;
+typedef unsigned int hkey_t;
 
-typedef void(*Hashtable_PairFunction)(int, void*, void*);
+typedef void(*Hashtable_PairFunction)(hkey_t key, void* value, void* userdata);
 
-typedef struct HashtableItem {
-   int key;
+typedef struct HashtableItem_ {
+   hkey_t key;
+   unsigned int probe;
    void* value;
-   struct HashtableItem* next;
 } HashtableItem;
 
-struct Hashtable_ {
-   int size;
-   HashtableItem** buckets;
-   int items;
+typedef struct Hashtable_ {
+   unsigned int size;
+   HashtableItem* buckets;
+   unsigned int items;
    bool owner;
-};
+} Hashtable;
 
-HashtableItem* HashtableItem_new(int key, void* value);
+#ifndef NDEBUG
 
-Hashtable* Hashtable_new(int size, bool owner);
+unsigned int Hashtable_count(const Hashtable* this);
+
+#endif /* NDEBUG */
+
+Hashtable* Hashtable_new(unsigned int size, bool owner);
 
 void Hashtable_delete(Hashtable* this);
 
-inline int Hashtable_size(Hashtable* this);
+void Hashtable_clear(Hashtable* this);
 
-void Hashtable_put(Hashtable* this, int key, void* value);
+void Hashtable_setSize(Hashtable* this, unsigned int size);
 
-void* Hashtable_remove(Hashtable* this, int key);
-//#include <stdio.h>
-inline void* Hashtable_get(Hashtable* this, int key);
+void Hashtable_put(Hashtable* this, hkey_t key, void* value);
+
+void* Hashtable_remove(Hashtable* this, hkey_t key);
+
+void* Hashtable_get(Hashtable* this, hkey_t key);
 
 void Hashtable_foreach(Hashtable* this, Hashtable_PairFunction f, void* userData);
 

Header.c

@@ -1,169 +1,189 @@
 /*
 htop - Header.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Header.h"
-#include "Meter.h"
 
-#include "debug.h"
-#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
-/*{
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef enum HeaderSide_ {
-   LEFT_HEADER,
-   RIGHT_HEADER
-} HeaderSide;
 
-typedef struct Header_ {
-   Vector* leftMeters;
-   Vector* rightMeters;
-   ProcessList* pl;
-   bool margin;
-   int height;
-   int pad;
-} Header;
-
-}*/
-
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-Header* Header_new(ProcessList* pl) {
-   Header* this = malloc(sizeof(Header));
-   this->leftMeters = Vector_new(METER_CLASS, true, DEFAULT_SIZE, NULL);
-   this->rightMeters = Vector_new(METER_CLASS, true, DEFAULT_SIZE, NULL);
-   this->margin = true;
+Header* Header_new(struct ProcessList_* pl, Settings* settings, int nrColumns) {
+   Header* this = xCalloc(1, sizeof(Header));
+   this->columns = xCalloc(nrColumns, sizeof(Vector*));
+   this->settings = settings;
    this->pl = pl;
+   this->nrColumns = nrColumns;
+   Header_forEachColumn(this, i) {
+      this->columns[i] = Vector_new(Class(Meter), true, DEFAULT_SIZE);
+   }
    return this;
 }
 
 void Header_delete(Header* this) {
-   Vector_delete(this->leftMeters);
-   Vector_delete(this->rightMeters);
+   Header_forEachColumn(this, i) {
+      Vector_delete(this->columns[i]);
+   }
+   free(this->columns);
    free(this);
 }
 
-void Header_createMeter(Header* this, char* name, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
+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);
+         }
+      }
+   }
+   Header_calculateHeight(this);
+}
+
+void Header_writeBackToSettings(const Header* this) {
+   Header_forEachColumn(this, col) {
+      MeterColumnSettings* colSettings = &this->settings->columns[col];
+
+      String_freeArray(colSettings->names);
+      free(colSettings->modes);
+
+      Vector* vec = this->columns[col];
+      int len = Vector_size(vec);
+
+      colSettings->names = xCalloc(len + 1, sizeof(char*));
+      colSettings->modes = xCalloc(len, sizeof(int));
+      colSettings->len = len;
+
+      for (int i = 0; i < len; i++) {
+         Meter* meter = (Meter*) Vector_get(vec, i);
+         char* name;
+         if (meter->param) {
+            xAsprintf(&name, "%s(%d)", As_Meter(meter)->name, meter->param);
+         } else {
+            xAsprintf(&name, "%s", As_Meter(meter)->name);
+         }
+         colSettings->names[i] = name;
+         colSettings->modes[i] = meter->mode;
+      }
+   }
+}
+
+MeterModeId Header_addMeterByName(Header* this, char* name, int column) {
+   Vector* meters = this->columns[column];
 
    char* paren = strchr(name, '(');
    int param = 0;
    if (paren) {
-      int ok = sscanf(paren, "(%d)", &param);
-      if (!ok) param = 0;
+      int ok = sscanf(paren, "(%10d)", &param);
+      if (!ok)
+         param = 0;
       *paren = '\0';
    }
-   for (MeterType** type = Meter_types; *type; type++) {
+   MeterModeId mode = TEXT_METERMODE;
+   for (const MeterClass* const* type = Platform_meterTypes; *type; type++) {
       if (String_eq(name, (*type)->name)) {
-         Vector_add(meters, Meter_new(this->pl, param, *type));
+         Meter* meter = Meter_new(this->pl, param, *type);
+         Vector_add(meters, meter);
+         mode = meter->mode;
          break;
       }
    }
+
+   if (paren)
+      *paren = '(';
+
+   return mode;
 }
 
-void Header_setMode(Header* this, int i, MeterModeId mode, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
+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_addMeter(Header* this, MeterType* type, int param, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
+Meter* Header_addMeterByClass(Header* this, const MeterClass* type, int param, int column) {
+   Vector* meters = this->columns[column];
 
    Meter* meter = Meter_new(this->pl, param, type);
    Vector_add(meters, meter);
    return meter;
 }
 
-int Header_size(Header* this, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
-
+int Header_size(Header* this, int column) {
+   Vector* meters = this->columns[column];
    return Vector_size(meters);
 }
 
-char* Header_readMeterName(Header* this, int i, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
-   Meter* meter = (Meter*) Vector_get(meters, i);
-
-   int nameLen = strlen(meter->type->name);
-   int len = nameLen + 100;
-   char* name = malloc(len);
-   strncpy(name, meter->type->name, nameLen);
-   name[nameLen] = '\0';
-   if (meter->param)
-      snprintf(name + nameLen, len - nameLen, "(%d)", meter->param);
-
-   return name;
-}
-
-MeterModeId Header_readMeterMode(Header* this, int i, HeaderSide side) {
-   Vector* meters = side == LEFT_HEADER
-                       ? this->leftMeters
-                       : this->rightMeters;
+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_defaultMeters(Header* this) {
-   Vector_add(this->leftMeters, Meter_new(this->pl, 0, &AllCPUsMeter));
-   Vector_add(this->leftMeters, Meter_new(this->pl, 0, &MemoryMeter));
-   Vector_add(this->leftMeters, Meter_new(this->pl, 0, &SwapMeter));
-   Vector_add(this->rightMeters, Meter_new(this->pl, 0, &TasksMeter));
-   Vector_add(this->rightMeters, Meter_new(this->pl, 0, &LoadAverageMeter));
-   Vector_add(this->rightMeters, Meter_new(this->pl, 0, &UptimeMeter));
+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)) {
+            Meter_init(meter);
+         }
+      }
+   }
 }
 
-void Header_draw(Header* this) {
+void Header_draw(const Header* this) {
    int height = this->height;
    int pad = this->pad;
-   
    attrset(CRT_colors[RESET_COLOR]);
    for (int y = 0; y < height; y++) {
       mvhline(y, 0, ' ', COLS);
    }
-   for (int y = (pad / 2), i = 0; i < Vector_size(this->leftMeters); i++) {
-      Meter* meter = (Meter*) Vector_get(this->leftMeters, i);
-      meter->draw(meter, pad, y, COLS / 2 - (pad * 2 - 1) - 1);
+   int width = COLS / this->nrColumns - (pad * this->nrColumns - 1) - 1;
+   int x = pad;
+
+   Header_forEachColumn(this, col) {
+      Vector* meters = this->columns[col];
+      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);
          y += meter->h;
       }
-   for (int y = (pad / 2), i = 0; i < Vector_size(this->rightMeters); i++) {
-      Meter* meter = (Meter*) Vector_get(this->rightMeters, i);
-      meter->draw(meter, COLS / 2 + pad, y, COLS / 2 - (pad * 2 - 1) - 1);
-      y += meter->h;
+      x += width + pad;
    }
 }
 
 int Header_calculateHeight(Header* this) {
-   int pad = this->margin ? 2 : 0;
-   int leftHeight = pad;
-   int rightHeight = pad;
+   int pad = this->settings->headerMargin ? 2 : 0;
+   int maxHeight = pad;
 
-   for (int i = 0; i < Vector_size(this->leftMeters); i++) {
-      Meter* meter = (Meter*) Vector_get(this->leftMeters, i);
-      leftHeight += meter->h;
+   Header_forEachColumn(this, col) {
+      Vector* meters = this->columns[col];
+      int height = pad;
+      for (int i = 0; i < Vector_size(meters); i++) {
+         Meter* meter = (Meter*) Vector_get(meters, i);
+         height += meter->h;
       }
-   for (int i = 0; i < Vector_size(this->rightMeters); i++) {
-      Meter* meter = (Meter*) Vector_get(this->rightMeters, i);
-      rightHeight += meter->h;
+      maxHeight = MAXIMUM(maxHeight, height);
    }
+   this->height = maxHeight;
    this->pad = pad;
-   this->height = MAX(leftHeight, rightHeight);
-   return this->height;
+   return maxHeight;
 }

Header.h

@@ -1,58 +1,49 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Header
 #define HEADER_Header
 /*
 htop - Header.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
 #include "Meter.h"
-
-#include "debug.h"
-#include <assert.h>
-
-
-typedef enum HeaderSide_ {
-   LEFT_HEADER,
-   RIGHT_HEADER
-} HeaderSide;
+#include "ProcessList.h"
+#include "Settings.h"
+#include "Vector.h"
 
 typedef struct Header_ {
-   Vector* leftMeters;
-   Vector* rightMeters;
+   Vector** columns;
+   Settings* settings;
    ProcessList* pl;
-   bool margin;
-   int height;
+   int nrColumns;
    int pad;
+   int height;
 } Header;
 
+#define Header_forEachColumn(this_, i_) for (int (i_)=0; (i_) < (this_)->nrColumns; ++(i_))
 
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-Header* Header_new(ProcessList* pl);
+Header* Header_new(ProcessList* pl, Settings* settings, int nrColumns);
 
 void Header_delete(Header* this);
 
-void Header_createMeter(Header* this, char* name, HeaderSide side);
+void Header_populateFromSettings(Header* this);
 
-void Header_setMode(Header* this, int i, MeterModeId mode, HeaderSide side);
+void Header_writeBackToSettings(const Header* this);
 
-Meter* Header_addMeter(Header* this, MeterType* type, int param, HeaderSide side);
+MeterModeId Header_addMeterByName(Header* this, char* name, int column);
 
-int Header_size(Header* this, HeaderSide side);
+void Header_setMode(Header* this, int i, MeterModeId mode, int column);
 
-char* Header_readMeterName(Header* this, int i, HeaderSide side);
+Meter* Header_addMeterByClass(Header* this, const MeterClass* type, int param, int column);
 
-MeterModeId Header_readMeterMode(Header* this, int i, HeaderSide side);
+int Header_size(Header* this, int column);
 
-void Header_defaultMeters(Header* this);
+MeterModeId Header_readMeterMode(Header* this, int i, int column);
 
-void Header_draw(Header* this);
+void Header_reinit(Header* this);
+
+void Header_draw(const Header* this);
 
 int Header_calculateHeight(Header* this);
 

HostnameMeter.c

@@ -0,0 +1,40 @@
+/*
+htop - HostnameMeter.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 "config.h" // IWYU pragma: keep
+
+#include "HostnameMeter.h"
+
+#include <unistd.h>
+
+#include "CRT.h"
+#include "Object.h"
+
+
+static const int HostnameMeter_attributes[] = {
+   HOSTNAME
+};
+
+static void HostnameMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   (void) this;
+   gethostname(buffer, size - 1);
+}
+
+const MeterClass HostnameMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete
+   },
+   .updateValues = HostnameMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
+   .total = 100.0,
+   .attributes = HostnameMeter_attributes,
+   .name = "Hostname",
+   .uiName = "Hostname",
+   .caption = "Hostname: ",
+};

HostnameMeter.h

@@ -0,0 +1,14 @@
+#ifndef HEADER_HostnameMeter
+#define HEADER_HostnameMeter
+/*
+htop - HostnameMeter.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 "Meter.h"
+
+extern const MeterClass HostnameMeter_class;
+
+#endif

INSTALL

@@ -1,229 +0,0 @@
-Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002 Free Software
-Foundation, Inc.
-
-   This file is free documentation; the Free Software Foundation gives
-unlimited permission to copy, distribute and modify it.
-
-Basic Installation
-==================
-
-   These are generic installation instructions.
-
-   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 only 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.  If you're
-     using `csh' on an old version of System V, you might need to type
-     `sh ./configure' instead to prevent `csh' from trying to execute
-     `configure' itself.
-
-     Running `configure' takes awhile.  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.
-
-  4. Type `make install' to install the programs and any data files and
-     documentation.
-
-  5. 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.
-
-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=c89 CFLAGS=-O2 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 must use a version of `make' that
-supports the `VPATH' variable, such as 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 `..'.
-
-   If you have to use a `make' that does not support the `VPATH'
-variable, you have 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.
-
-Installation Names
-==================
-
-   By default, `make install' will install the package's files in
-`/usr/local/bin', `/usr/local/man', etc.  You can specify an
-installation prefix other than `/usr/local' by giving `configure' the
-option `--prefix=PATH'.
-
-   You can specify separate installation prefixes for
-architecture-specific files and architecture-independent files.  If you
-give `configure' the option `--exec-prefix=PATH', the package will use
-PATH as the prefix for installing programs and libraries.
-Documentation and other data files will still use the regular prefix.
-
-   In addition, if you use an unusual directory layout you can give
-options like `--bindir=PATH' 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.
-
-   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'.
-
-Optional Features
-=================
-
-   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.
-
-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 `--target=TYPE' option 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
-
-will cause the specified gcc to be used as the C compiler (unless it is
-overridden in the site shell script).
-
-`configure' Invocation
-======================
-
-   `configure' recognizes the following options to control how it
-operates.
-
-`--help'
-`-h'
-     Print a summary of the options to `configure', and exit.
-
-`--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.
-
-`configure' also accepts some other, not widely useful, options.  Run
-`configure --help' for more details.
-

IncSet.c

@@ -0,0 +1,242 @@
+/*
+htop - IncSet.c
+(C) 2005-2012 Hisham H. Muhammad
+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 <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "CRT.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
+
+
+static void IncMode_reset(IncMode* mode) {
+   mode->index = 0;
+   mode->buffer[0] = 0;
+}
+
+void IncSet_reset(IncSet* this, IncType type) {
+   IncMode_reset(&this->modes[type]);
+}
+
+static const char* const searchFunctions[] = {"Next  ", "Cancel ", " Search: ", NULL};
+static const char* const searchKeys[] = {"F3", "Esc", "  "};
+static int searchEvents[] = {KEY_F(3), 27, ERR};
+
+static inline void IncMode_initSearch(IncMode* search) {
+   memset(search, 0, sizeof(IncMode));
+   search->bar = FunctionBar_new(searchFunctions, searchKeys, searchEvents);
+   search->isFilter = false;
+}
+
+static const char* const filterFunctions[] = {"Done  ", "Clear ", " Filter: ", NULL};
+static const char* const filterKeys[] = {"Enter", "Esc", "  "};
+static int filterEvents[] = {13, 27, ERR};
+
+static inline void IncMode_initFilter(IncMode* filter) {
+   memset(filter, 0, sizeof(IncMode));
+   filter->bar = FunctionBar_new(filterFunctions, filterKeys, filterEvents);
+   filter->isFilter = true;
+}
+
+static inline void IncMode_done(IncMode* mode) {
+   FunctionBar_delete(mode->bar);
+}
+
+IncSet* IncSet_new(FunctionBar* bar) {
+   IncSet* this = xCalloc(1, sizeof(IncSet));
+   IncMode_initSearch(&(this->modes[INC_SEARCH]));
+   IncMode_initFilter(&(this->modes[INC_FILTER]));
+   this->active = NULL;
+   this->filtering = false;
+   this->defaultBar = bar;
+   return this;
+}
+
+void IncSet_delete(IncSet* this) {
+   IncMode_done(&(this->modes[0]));
+   IncMode_done(&(this->modes[1]));
+   free(this);
+}
+
+static void updateWeakPanel(IncSet* this, Panel* panel, Vector* lines) {
+   Object* selected = Panel_getSelected(panel);
+   Panel_prune(panel);
+   if (this->filtering) {
+      int n = 0;
+      const char* incFilter = this->modes[INC_FILTER].buffer;
+      for (int i = 0; i < Vector_size(lines); i++) {
+         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);
+            }
+
+            n++;
+         }
+      }
+   } else {
+      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);
+         }
+      }
+   }
+}
+
+static bool search(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;
+      }
+   }
+
+   FunctionBar_drawExtra(mode->bar,
+                         mode->buffer,
+                         found ? -1 : CRT_colors[FAILED_SEARCH],
+                         true);
+   return found;
+}
+
+static bool IncMode_find(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;
+      }
+   }
+}
+
+bool IncSet_next(IncSet* this, IncType type, Panel* panel, IncMode_GetPanelValue getPanelValue) {
+   return IncMode_find(&this->modes[type], panel, getPanelValue, 1);
+}
+
+bool IncSet_prev(IncSet* this, IncType type, Panel* panel, IncMode_GetPanelValue getPanelValue) {
+   return IncMode_find(&this->modes[type], panel, getPanelValue, -1);
+}
+
+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;
+
+      IncMode_find(mode, panel, getPanelValue, 1);
+      doSearch = false;
+   } 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;
+            }
+         }
+      }
+   } else if ((ch == KEY_BACKSPACE || ch == 127)) {
+      if (mode->index > 0) {
+         mode->index--;
+         mode->buffer[mode->index] = 0;
+         if (mode->isFilter) {
+            filterChanged = true;
+            if (mode->index == 0) {
+               this->filtering = false;
+               IncMode_reset(mode);
+            }
+         }
+      } else {
+         doSearch = false;
+      }
+   } else if (ch == KEY_RESIZE) {
+      Panel_resize(panel, COLS, LINES - panel->y - 1);
+   } else {
+      if (mode->isFilter) {
+         filterChanged = true;
+         if (ch == 27) {
+            this->filtering = false;
+            IncMode_reset(mode);
+         }
+      } else {
+         if (ch == 27) {
+            IncMode_reset(mode);
+         }
+      }
+      this->active = NULL;
+      Panel_setDefaultBar(panel);
+      FunctionBar_draw(this->defaultBar);
+      doSearch = false;
+   }
+   if (doSearch) {
+      this->found = search(mode, panel, getPanelValue);
+   }
+   if (filterChanged && lines) {
+      updateWeakPanel(this, panel, lines);
+   }
+   return filterChanged;
+}
+
+const char* IncSet_getListItemValue(Panel* panel, int i) {
+   ListItem* l = (ListItem*) Panel_get(panel, i);
+   return l ? l->value : "";
+}
+
+void IncSet_activate(IncSet* this, IncType type, Panel* panel) {
+   this->active = &(this->modes[type]);
+   FunctionBar_drawExtra(this->active->bar, this->active->buffer, -1, true);
+   panel->currentBar = this->active->bar;
+}
+
+void IncSet_drawBar(const IncSet* this) {
+   if (this->active) {
+      FunctionBar_drawExtra(this->active->bar, this->active->buffer, -1, true);
+   } else {
+      FunctionBar_draw(this->defaultBar);
+   }
+}
+
+int IncSet_synthesizeEvent(IncSet* this, int x) {
+   if (this->active) {
+      return FunctionBar_synthesizeEvent(this->active->bar, x);
+   } else {
+      return FunctionBar_synthesizeEvent(this->defaultBar, x);
+   }
+}

IncSet.h

@@ -0,0 +1,65 @@
+#ifndef HEADER_IncSet
+#define HEADER_IncSet
+/*
+htop - IncSet.h
+(C) 2005-2012 Hisham H. Muhammad
+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 "Vector.h"
+
+#define INCMODE_MAX 40
+
+typedef enum {
+   INC_SEARCH = 0,
+   INC_FILTER = 1
+} IncType;
+
+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;
+
+static inline const char* IncSet_filter(const IncSet* this) {
+   return this->filtering ? this->modes[INC_FILTER].buffer : NULL;
+}
+
+typedef const char* (*IncMode_GetPanelValue)(Panel*, int);
+
+void IncSet_reset(IncSet* this, IncType type);
+
+IncSet* IncSet_new(FunctionBar* bar);
+
+void IncSet_delete(IncSet* this);
+
+bool IncSet_next(IncSet* this, IncType type, Panel* panel, IncMode_GetPanelValue getPanelValue);
+
+bool IncSet_prev(IncSet* this, IncType type, Panel* panel, IncMode_GetPanelValue getPanelValue);
+
+bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue getPanelValue, Vector* lines);
+
+const char* IncSet_getListItemValue(Panel* panel, int i);
+
+void IncSet_activate(IncSet* this, IncType type, Panel* panel);
+
+void IncSet_drawBar(const IncSet* this);
+
+int IncSet_synthesizeEvent(IncSet* this, int x);
+
+#endif

InfoScreen.c

@@ -0,0 +1,166 @@
+#include "config.h" // IWYU pragma: keep
+
+#include "InfoScreen.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "CRT.h"
+#include "IncSet.h"
+#include "ListItem.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
+
+
+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};
+
+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->inc = IncSet_new(bar);
+   this->lines = Vector_new(this->display->items->type, true, DEFAULT_SIZE);
+   Panel_setHeader(this->display, panelHeader);
+   return this;
+}
+
+InfoScreen* InfoScreen_done(InfoScreen* this) {
+   Panel_delete((Object*)this->display);
+   IncSet_delete(this->inc);
+   Vector_delete(this->lines);
+   return this;
+}
+
+void InfoScreen_drawTitled(InfoScreen* this, const char* fmt, ...) {
+   va_list ap;
+   va_start(ap, fmt);
+
+   char* title = xMalloc(COLS + 1);
+   int len = vsnprintf(title, COLS + 1, fmt, ap);
+   if (len > COLS) {
+      memset(&title[COLS - 3], '.', 3);
+   }
+
+   attrset(CRT_colors[METER_TEXT]);
+   mvhline(0, 0, ' ', COLS);
+   mvwprintw(stdscr, 0, 0, title);
+   attrset(CRT_colors[DEFAULT_COLOR]);
+   this->display->needsRedraw = true;
+   Panel_draw(this->display, true, true);
+   IncSet_drawBar(this->inc);
+   free(title);
+   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, 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_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)) {
+      Panel_add(this->display, (Object*)last);
+   }
+}
+
+void InfoScreen_run(InfoScreen* this) {
+   Panel* panel = this->display;
+
+   if (As_InfoScreen(this)->scan)
+      InfoScreen_scan(this);
+
+   InfoScreen_draw(this);
+
+   bool looping = true;
+   while (looping) {
+
+      Panel_draw(panel, true, true);
+
+      if (this->inc->active) {
+         (void) move(LINES - 1, CRT_cursorX);
+      }
+      set_escdelay(25);
+      int ch = getch();
+
+      if (ch == ERR) {
+         if (As_InfoScreen(this)->onErr) {
+            InfoScreen_onErr(this);
+            continue;
+         }
+      }
+
+      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;
+            } else if (mevent.y == LINES - 1) {
+               ch = IncSet_synthesizeEvent(this->inc, mevent.x);
+            }
+         }
+      }
+
+      if (this->inc->active) {
+         IncSet_handleKey(this->inc, ch, panel, IncSet_getListItemValue, this->lines);
+         continue;
+      }
+
+      switch(ch) {
+      case ERR:
+         continue;
+      case KEY_F(3):
+      case '/':
+         IncSet_activate(this->inc, INC_SEARCH, panel);
+         break;
+      case KEY_F(4):
+      case '\\':
+         IncSet_activate(this->inc, INC_FILTER, panel);
+         break;
+      case KEY_F(5):
+         clear();
+         if (As_InfoScreen(this)->scan)
+            InfoScreen_scan(this);
+
+         InfoScreen_draw(this);
+         break;
+      case '\014': // Ctrl+L
+         clear();
+         InfoScreen_draw(this);
+         break;
+      case 27:
+      case 'q':
+      case KEY_F(10):
+         looping = false;
+         break;
+      case KEY_RESIZE:
+         Panel_resize(panel, COLS, LINES - 2);
+         if (As_InfoScreen(this)->scan)
+            InfoScreen_scan(this);
+
+         InfoScreen_draw(this);
+         break;
+      default:
+         if (As_InfoScreen(this)->onKey && InfoScreen_onKey(this, ch)) {
+            continue;
+         }
+         Panel_onKey(panel, ch);
+      }
+   }
+}

InfoScreen.h

@@ -0,0 +1,56 @@
+#ifndef HEADER_InfoScreen
+#define HEADER_InfoScreen
+
+#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_ {
+   Object super;
+   const Process* process;
+   Panel* display;
+   FunctionBar* bar;
+   IncSet* inc;
+   Vector* lines;
+} 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_ {
+   const ObjectClass super;
+   const InfoScreen_Scan scan;
+   const InfoScreen_Draw draw;
+   const InfoScreen_OnErr onErr;
+   const InfoScreen_OnKey onKey;
+} InfoScreenClass;
+
+#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_)
+
+InfoScreen* InfoScreen_init(InfoScreen* this, const Process* process, FunctionBar* bar, int height, const char* panelHeader);
+
+InfoScreen* InfoScreen_done(InfoScreen* this);
+
+ATTR_FORMAT(printf, 2, 3)
+void InfoScreen_drawTitled(InfoScreen* this, const char* fmt, ...);
+
+void InfoScreen_addLine(InfoScreen* this, const char* line);
+
+void InfoScreen_appendLine(InfoScreen* this, const char* line);
+
+void InfoScreen_run(InfoScreen* this);
+
+#endif

ListItem.c

@@ -1,73 +1,70 @@
 /*
 htop - ListItem.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+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 "String.h"
-#include "Object.h"
-#include "RichString.h"
+
+#include <assert.h>
+#include <stdlib.h>
 #include <string.h>
 
-#include "debug.h"
+#include "CRT.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-/*{
 
-typedef struct ListItem_ {
-   Object super;
-   char* value;
-   int key;
-} ListItem;
-
-}*/
-
-#ifdef DEBUG
-char* LISTITEM_CLASS = "ListItem";
-#else
-#define LISTITEM_CLASS NULL
-#endif
-
-ListItem* ListItem_new(char* value, int key) {
-   ListItem* this = malloc(sizeof(ListItem));
-   Object_setClass(this, LISTITEM_CLASS);
-   ((Object*)this)->display = ListItem_display;
-   ((Object*)this)->delete = ListItem_delete;
-   this->value = String_copy(value);
-   this->key = key;
-   return this;
-}
-
-void ListItem_append(ListItem* this, char* text) {
-   char* buf = malloc(strlen(this->value) + strlen(text) + 1);
-   sprintf(buf, "%s%s", this->value, text);
-   free(this->value);
-   this->value = buf;
-}
-
-void ListItem_delete(Object* cast) {
+static void ListItem_delete(Object* cast) {
    ListItem* this = (ListItem*)cast;
    free(this->value);
    free(this);
 }
 
-void ListItem_display(Object* cast, RichString* out) {
-   ListItem* 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];
-   snprintf(buffer, len, "%s", this->value);
-   RichString_write(out, CRT_colors[DEFAULT_COLOR], buffer);
+
+   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);
 }
 
-const char* ListItem_getRef(ListItem* this) {
-   return this->value;
+ListItem* ListItem_new(const char* value, int key) {
+   ListItem* this = AllocThis(ListItem);
+   this->value = xStrdup(value);
+   this->key = key;
+   this->moving = false;
+   return this;
 }
 
-int ListItem_compare(const void* cast1, const void* cast2) {
-   ListItem* obj1 = (ListItem*) cast1;
-   ListItem* obj2 = (ListItem*) cast2;
+void ListItem_append(ListItem* this, const char* text) {
+   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';
+}
+
+static long 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

@@ -1,46 +1,31 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ListItem
 #define HEADER_ListItem
 /*
 htop - ListItem.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "String.h"
+#include <stdbool.h>
+
 #include "Object.h"
-#include "RichString.h"
-#include <string.h>
-
-#include "debug.h"
-
 
 typedef struct ListItem_ {
    Object super;
    char* value;
    int key;
+   bool moving;
 } ListItem;
 
+extern const ObjectClass ListItem_class;
 
-#ifdef DEBUG
-extern char* LISTITEM_CLASS;
-#else
-#define LISTITEM_CLASS NULL
-#endif
+ListItem* ListItem_new(const char* value, int key);
 
-ListItem* ListItem_new(char* value, int key);
-
-void ListItem_append(ListItem* this, char* text);
-
-void ListItem_delete(Object* cast);
-
-void ListItem_display(Object* cast, RichString* out);
-
-const char* ListItem_getRef(ListItem* this);
-
-int ListItem_compare(const void* cast1, const void* cast2);
+void ListItem_append(ListItem* this, const char* text);
 
+static inline const char* ListItem_getRef(const ListItem* this) {
+   return this->value;
+}
 
 #endif

LoadAverageMeter.c

@@ -1,87 +1,91 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - LoadAverageMeter.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 "LoadAverageMeter.h"
-#include "Meter.h"
 
-#include <curses.h>
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-#include "debug.h"
 
-int LoadAverageMeter_attributes[] = {
-   LOAD_AVERAGE_FIFTEEN, LOAD_AVERAGE_FIVE, LOAD_AVERAGE_ONE
+static const int LoadAverageMeter_attributes[] = {
+   LOAD_AVERAGE_ONE,
+   LOAD_AVERAGE_FIVE,
+   LOAD_AVERAGE_FIFTEEN
 };
 
-MeterType LoadAverageMeter = {
-   .setValues = LoadAverageMeter_setValues, 
+static const int LoadMeter_attributes[] = {
+   LOAD
+};
+
+static void LoadAverageMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   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]);
+}
+
+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);
+}
+
+static void LoadMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   double five, fifteen;
+   Platform_getLoadAverage(&this->values[0], &five, &fifteen);
+   if (this->values[0] > this->total) {
+      this->total = this->values[0];
+   }
+   xSnprintf(buffer, size, "%.2f", this->values[0]);
+}
+
+static void LoadMeter_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], buffer);
+}
+
+const MeterClass LoadAverageMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
       .display = LoadAverageMeter_display,
-   .mode = TEXT_METERMODE,
-   .items = 3,
+   },
+   .updateValues = LoadAverageMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 3,
    .total = 100.0,
    .attributes = LoadAverageMeter_attributes,
    .name = "LoadAverage",
    .uiName = "Load average",
+   .description = "Load averages: 1 minute, 5 minutes, 15 minutes",
    .caption = "Load average: "
 };
 
-int LoadMeter_attributes[] = { LOAD };
-
-MeterType LoadMeter = {
-   .setValues = LoadMeter_setValues, 
+const MeterClass LoadMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
       .display = LoadMeter_display,
-   .mode = TEXT_METERMODE,
-   .items = 1,
+   },
+   .updateValues = LoadMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
    .total = 100.0,
    .attributes = LoadMeter_attributes,
    .name = "Load",
    .uiName = "Load",
+   .description = "Load: average of ready processes in the last minute",
    .caption = "Load: "
 };
-
-static inline void LoadAverageMeter_scan(double* one, double* five, double* fifteen) {
-   int activeProcs, totalProcs, lastProc;
-   FILE *fd = fopen(PROCDIR "/loadavg", "r");
-   int read = fscanf(fd, "%lf %lf %lf %d/%d %d", one, five, fifteen,
-      &activeProcs, &totalProcs, &lastProc);
-   (void) read;
-   assert(read == 6);
-   fclose(fd);
-}
-
-void LoadAverageMeter_setValues(Meter* this, char* buffer, int size) {
-   LoadAverageMeter_scan(&this->values[2], &this->values[1], &this->values[0]);
-   snprintf(buffer, size, "%.2f/%.2f/%.2f", this->values[2], this->values[1], this->values[0]);
-}
-
-void LoadAverageMeter_display(Object* cast, RichString* out) {
-   Meter* this = (Meter*)cast;
-   char buffer[20];
-   RichString_init(out);
-   sprintf(buffer, "%.2f ", this->values[2]);
-   RichString_append(out, CRT_colors[LOAD_AVERAGE_FIFTEEN], buffer);
-   sprintf(buffer, "%.2f ", this->values[1]);
-   RichString_append(out, CRT_colors[LOAD_AVERAGE_FIVE], buffer);
-   sprintf(buffer, "%.2f ", this->values[0]);
-   RichString_append(out, CRT_colors[LOAD_AVERAGE_ONE], buffer);
-}
-
-void LoadMeter_setValues(Meter* this, char* buffer, int size) {
-   double five, fifteen;
-   LoadAverageMeter_scan(&this->values[0], &five, &fifteen);
-   if (this->values[0] > this->total) {
-      this->total = this->values[0];
-   }
-   snprintf(buffer, size, "%.2f", this->values[0]);
-}
-
-void LoadMeter_display(Object* cast, RichString* out) {
-   Meter* this = (Meter*)cast;
-   char buffer[20];
-   RichString_init(out);
-   sprintf(buffer, "%.2f ", ((Meter*)this)->values[0]);
-   RichString_append(out, CRT_colors[LOAD], buffer);
-}

LoadAverageMeter.h

@@ -1,34 +1,16 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_LoadAverageMeter
 #define HEADER_LoadAverageMeter
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - LoadAverageMeter.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 "Meter.h"
 
-#include <curses.h>
+extern const MeterClass LoadAverageMeter_class;
 
-#include "debug.h"
-
-extern int LoadAverageMeter_attributes[];
-
-extern MeterType LoadAverageMeter;
-
-extern int LoadMeter_attributes[];
-
-extern MeterType LoadMeter;
-
-void LoadAverageMeter_setValues(Meter* this, char* buffer, int size);
-
-void LoadAverageMeter_display(Object* cast, RichString* out);
-
-void LoadMeter_setValues(Meter* this, char* buffer, int size);
-
-void LoadMeter_display(Object* cast, RichString* out);
+extern const MeterClass LoadMeter_class;
 
 #endif

Macros.h

@@ -0,0 +1,62 @@
+#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
+
+#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))
+
+#else /* __GNUC__ */
+
+#define ATTR_FORMAT(type, index, check)
+#define ATTR_NONNULL
+#define ATTR_NORETURN
+#define ATTR_UNUSED
+
+#endif /* __GNUC__ */
+
+// ignore casts discarding const specifier, e.g.
+//     const char []     ->  char * / void *
+//     const char *[2]'  ->  char *const *
+#ifdef __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
+
+#endif

MainPanel.c

@@ -0,0 +1,194 @@
+/*
+htop - ColumnsPanel.c
+(C) 2004-2015 Hisham H. Muhammad
+(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 <ctype.h>
+#include <stdlib.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"
+
+
+static const char* const MainFunctions[]  = {"Help  ", "Setup ", "Search", "Filter", "Tree  ", "SortBy", "Nice -", "Nice +", "Kill  ", "Quit  ", NULL};
+
+void MainPanel_updateTreeFunctions(MainPanel* this, bool mode) {
+   FunctionBar* bar = MainPanel_getFunctionBar(this);
+   FunctionBar_setLabel(bar, KEY_F(5), mode ? "Sorted" : "Tree  ");
+}
+
+void MainPanel_pidSearch(MainPanel* this, int ch) {
+   Panel* super = (Panel*) this;
+   pid_t pid = ch - 48 + this->pidSearch;
+   for (int i = 0; i < Panel_size(super); i++) {
+      Process* p = (Process*) Panel_get(super, i);
+      if (p && p->pid == pid) {
+         Panel_setSelected(super, i);
+         break;
+      }
+   }
+   this->pidSearch = pid * 10;
+   if (this->pidSearch > 10000000) {
+      this->pidSearch = 0;
+   }
+}
+
+static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
+   MainPanel* this = (MainPanel*) super;
+
+   HandlerResult result = IGNORED;
+
+   Htop_Reaction reaction = HTOP_OK;
+
+   if (ch != ERR)
+      this->state->hideProcessSelection = false;
+
+   if (EVENT_IS_HEADER_CLICK(ch)) {
+      int x = EVENT_HEADER_CLICK_GET_X(ch);
+      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);
+      } else {
+         reaction |= Action_setSortKey(settings, field);
+      }
+      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);
+      if (filterChanged) {
+         this->state->pl->incFilter = IncSet_filter(this->inc);
+         reaction = HTOP_REFRESH | HTOP_REDRAW_BAR;
+      }
+      if (this->inc->found) {
+         reaction |= Action_follow(this->state);
+         reaction |= HTOP_KEEP_FOLLOWING;
+      }
+      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 (0 < ch && ch < 255 && isdigit((unsigned char)ch)) {
+      MainPanel_pidSearch(this, ch);
+   } else {
+      if (ch != ERR) {
+         this->pidSearch = 0;
+      } else {
+         reaction |= HTOP_KEEP_FOLLOWING;
+      }
+   }
+
+   if (reaction & HTOP_REDRAW_BAR) {
+      MainPanel_updateTreeFunctions(this, this->state->settings->treeView);
+      IncSet_drawBar(this->inc);
+      if (this->state->pauseProcessUpdate) {
+         FunctionBar_append("PAUSED", CRT_colors[PAUSED]);
+      }
+   }
+   if (reaction & HTOP_UPDATE_PANELHDR) {
+      ProcessList_printHeader(this->state->pl, Panel_getHeader(super));
+   }
+   if (reaction & HTOP_REFRESH) {
+      result |= REDRAW;
+   }
+   if (reaction & HTOP_RECALCULATE) {
+      result |= RESCAN;
+   }
+   if (reaction & HTOP_SAVE_SETTINGS) {
+      this->state->settings->changed = true;
+   }
+   if (reaction & HTOP_QUIT) {
+      return BREAK_LOOP;
+   }
+   if (!(reaction & HTOP_KEEP_FOLLOWING)) {
+      this->state->pl->following = -1;
+      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+   }
+   return result;
+}
+
+int MainPanel_selectedPid(MainPanel* this) {
+   Process* p = (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);
+   return Process_getCommand(p);
+}
+
+bool MainPanel_foreachProcess(MainPanel* this, MainPanel_ForeachProcessFn fn, Arg arg, bool* wasAnyTagged) {
+   Panel* super = (Panel*) this;
+   bool ok = true;
+   bool anyTagged = false;
+   for (int i = 0; i < Panel_size(super); i++) {
+      Process* p = (Process*) Panel_get(super, i);
+      if (p->tag) {
+         ok = fn(p, arg) && ok;
+         anyTagged = true;
+      }
+   }
+   if (!anyTagged) {
+      Process* p = (Process*) Panel_getSelected(super);
+      if (p) {
+         ok &= fn(p, arg);
+      }
+   }
+
+   if (wasAnyTagged)
+      *wasAnyTagged = anyTagged;
+
+   return ok;
+}
+
+const PanelClass MainPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = MainPanel_delete
+   },
+   .eventHandler = MainPanel_eventHandler
+};
+
+MainPanel* MainPanel_new() {
+   MainPanel* this = AllocThis(MainPanel);
+   Panel_init((Panel*) this, 1, 1, 1, 1, Class(Process), false, FunctionBar_new(MainFunctions, NULL, NULL));
+   this->keys = xCalloc(KEY_MAX, sizeof(Htop_Action));
+   this->inc = IncSet_new(MainPanel_getFunctionBar(this));
+
+   Action_setBindings(this->keys);
+   Platform_setBindings(this->keys);
+
+   return this;
+}
+
+void MainPanel_setState(MainPanel* this, State* state) {
+   this->state = state;
+}
+
+void MainPanel_delete(Object* object) {
+   Panel* super = (Panel*) object;
+   MainPanel* this = (MainPanel*) object;
+   Panel_done(super);
+   IncSet_delete(this->inc);
+   free(this->keys);
+   free(this);
+}

MainPanel.h

@@ -0,0 +1,53 @@
+#ifndef HEADER_MainPanel
+#define HEADER_MainPanel
+/*
+htop - ColumnsPanel.h
+(C) 2004-2015 Hisham H. Muhammad
+(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 <stdbool.h>
+#include <sys/types.h>
+
+#include "Action.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;
+   pid_t pidSearch;
+} MainPanel;
+
+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);
+
+extern const PanelClass MainPanel_class;
+
+MainPanel* MainPanel_new(void);
+
+void MainPanel_setState(MainPanel* this, State* state);
+
+void MainPanel_delete(Object* object);
+
+#endif

Makefile.am

@@ -1,38 +1,301 @@
+AUTOMAKE_OPTIONS = subdir-objects
 
 bin_PROGRAMS = htop
+
 dist_man_MANS = htop.1
-EXTRA_DIST = $(dist_man_MANS) htop.desktop htop.png scripts/MakeHeader.py \
+EXTRA_DIST = $(dist_man_MANS) htop.desktop htop.png htop.svg \
 install-sh autogen.sh 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
 
-AM_CFLAGS = -pedantic -Wall -std=c99
-AM_CPPFLAGS = -DSYSCONFDIR=\"$(sysconfdir)\"
+AM_CFLAGS += -pedantic -std=c99 -D_XOPEN_SOURCE_EXTENDED -DSYSCONFDIR=\"$(sysconfdir)\" -I"$(top_srcdir)/$(my_htop_platform)"
+AM_LDFLAGS =
 
-htop_SOURCES = AvailableMetersPanel.c CategoriesPanel.c ClockMeter.c \
-CPUMeter.c CRT.c DebugMemory.c DisplayOptionsPanel.c FunctionBar.c \
-Hashtable.c Header.c htop.c Panel.c ListItem.c LoadAverageMeter.c \
-MemoryMeter.c Meter.c MetersPanel.c Object.c Process.c \
-ProcessList.c RichString.c ScreenManager.c Settings.c SignalItem.c \
-SignalsPanel.c String.c SwapMeter.c TasksMeter.c Vector.c \
-UptimeMeter.c UsersTable.c AvailableMetersPanel.h CategoriesPanel.h \
-ClockMeter.h config.h CPUMeter.h CRT.h debug.h DebugMemory.h \
-DisplayOptionsPanel.h FunctionBar.h Hashtable.h Header.h htop.h Panel.h \
-ListItem.h LoadAverageMeter.h MemoryMeter.h Meter.h \
-MetersPanel.h Object.h Process.h ProcessList.h RichString.h ScreenManager.h \
-Settings.h SignalItem.h SignalsPanel.h String.h SwapMeter.h TasksMeter.h \
-Vector.h UptimeMeter.h UsersTable.h CheckItem.c CheckItem.h \
-ColorsPanel.c ColorsPanel.h TraceScreen.c TraceScreen.h \
-AvailableColumnsPanel.c AvailableColumnsPanel.h ColumnsPanel.c \
-ColumnsPanel.h
+myhtopsources = \
+	Action.c \
+	Affinity.c \
+	AffinityPanel.c \
+	AvailableColumnsPanel.c \
+	AvailableMetersPanel.c \
+	BatteryMeter.c \
+	CategoriesPanel.c \
+	ClockMeter.c \
+	ColorsPanel.c \
+	ColumnsPanel.c \
+	CommandScreen.c \
+	Compat.c \
+	CPUMeter.c \
+	CRT.c \
+	DateMeter.c \
+	DateTimeMeter.c \
+	DiskIOMeter.c \
+	DisplayOptionsPanel.c \
+	EnvScreen.c \
+	FunctionBar.c \
+	Hashtable.c \
+	Header.c \
+	HostnameMeter.c \
+	htop.c \
+	IncSet.c \
+	InfoScreen.c \
+	ListItem.c \
+	LoadAverageMeter.c \
+	MainPanel.c \
+	MemoryMeter.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 \
+	TasksMeter.c \
+	TraceScreen.c \
+	UptimeMeter.c \
+	UsersTable.c \
+	Vector.c \
+	XUtils.c
+
+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 \
+	CommandScreen.h \
+	Compat.h \
+	DateMeter.h \
+	DateTimeMeter.h \
+	DiskIOMeter.h \
+	DisplayOptionsPanel.h \
+	EnvScreen.h \
+	FunctionBar.h \
+	Hashtable.h \
+	Header.h \
+	HostnameMeter.h \
+	IncSet.h \
+	InfoScreen.h \
+	ListItem.h \
+	LoadAverageMeter.h \
+	Macros.h \
+	MainPanel.h \
+	MemoryMeter.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 \
+	TasksMeter.h \
+	TraceScreen.h \
+	UptimeMeter.h \
+	UsersTable.h \
+	Vector.h \
+	XUtils.h
+
+# Linux
+# -----
+
+linux_platform_headers = \
+	linux/IOPriority.h \
+	linux/IOPriorityPanel.h \
+	linux/LibSensors.h \
+	linux/LinuxProcess.h \
+	linux/LinuxProcessList.h \
+	linux/Platform.h \
+	linux/PressureStallMeter.h \
+	linux/SELinuxMeter.h \
+	linux/SystemdMeter.h \
+	linux/ZramMeter.h \
+	linux/ZramStats.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/ZfsCompressedArcMeter.h
+
+if HTOP_LINUX
+AM_LDFLAGS += -rdynamic
+myhtopplatsources = \
+	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/ZfsArcStats.c \
+	zfs/ZfsCompressedArcMeter.c
+
+myhtopplatheaders = $(linux_platform_headers)
+endif
+
+# FreeBSD
+# -------
+
+freebsd_platform_headers = \
+	freebsd/Platform.h \
+	freebsd/FreeBSDProcessList.h \
+	freebsd/FreeBSDProcess.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/openzfs_sysctl.h
+
+if HTOP_FREEBSD
+myhtopplatsources = freebsd/Platform.c freebsd/FreeBSDProcessList.c \
+freebsd/FreeBSDProcess.c \
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
+
+myhtopplatheaders = $(freebsd_platform_headers)
+endif
+
+# DragonFlyBSD
+# ------------
+
+dragonflybsd_platform_headers = \
+	dragonflybsd/Platform.h \
+	dragonflybsd/DragonFlyBSDProcessList.h \
+	dragonflybsd/DragonFlyBSDProcess.h
+
+if HTOP_DRAGONFLYBSD
+AM_LDFLAGS += -lkvm -lkinfo
+myhtopplatsources = dragonflybsd/Platform.c dragonflybsd/DragonFlyBSDProcessList.c \
+dragonflybsd/DragonFlyBSDProcess.c
+
+myhtopplatheaders = $(dragonflybsd_platform_headers)
+endif
+
+# OpenBSD
+# -------
+
+openbsd_platform_headers = \
+	openbsd/Platform.h \
+	openbsd/OpenBSDProcessList.h \
+	openbsd/OpenBSDProcess.h
+
+if HTOP_OPENBSD
+myhtopplatsources = openbsd/Platform.c openbsd/OpenBSDProcessList.c \
+openbsd/OpenBSDProcess.c
+
+myhtopplatheaders = $(openbsd_platform_headers)
+endif
+
+# Darwin
+# ------
+
+darwin_platform_headers = \
+	darwin/Platform.h \
+	darwin/DarwinProcess.h \
+	darwin/DarwinProcessList.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
+	zfs/ZfsArcStats.h \
+	zfs/openzfs_sysctl.h
+
+if HTOP_DARWIN
+AM_LDFLAGS += -framework IOKit -framework CoreFoundation
+myhtopplatsources = darwin/Platform.c darwin/DarwinProcess.c \
+darwin/DarwinProcessList.c \
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
+
+myhtopplatheaders = $(darwin_platform_headers)
+endif
+
+# Solaris
+# -------
+
+solaris_platform_headers = \
+	solaris/Platform.h \
+	solaris/SolarisProcess.h \
+	solaris/SolarisProcessList.h \
+	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
+	zfs/ZfsArcStats.h
+
+if HTOP_SOLARIS
+myhtopplatsources = solaris/Platform.c \
+solaris/SolarisProcess.c solaris/SolarisProcessList.c \
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c
+
+myhtopplatheaders = $(solaris_platform_headers)
+endif
+
+# Unsupported
+# -----------
+
+unsupported_platform_headers = \
+	unsupported/Platform.h \
+	unsupported/UnsupportedProcess.h \
+	unsupported/UnsupportedProcessList.h
+
+if HTOP_UNSUPPORTED
+myhtopplatsources = unsupported/Platform.c \
+unsupported/UnsupportedProcess.c unsupported/UnsupportedProcessList.c
+
+myhtopplatheaders = $(unsupported_platform_headers)
+endif
+
+# ----
+
+htop_SOURCES  = $(myhtopheaders) $(myhtopplatheaders) $(myhtopsources) $(myhtopplatsources)
+nodist_htop_SOURCES = config.h
+
+target:
+	echo $(htop_SOURCES)
 
 profile:
-	$(MAKE) all CFLAGS="-pg -O2"
+	$(MAKE) all AM_CPPFLAGS="-pg -O2 -DNDEBUG"
 
 debug:
-	$(MAKE) all CFLAGS="-g -DDEBUG"
+	$(MAKE) all AM_CPPFLAGS="-ggdb -DDEBUG"
 
-debuglite:
-	$(MAKE) all CFLAGS="-g -DDEBUGLITE"
+coverage:
+	$(MAKE) all AM_CPPFLAGS="-fprofile-arcs -ftest-coverage -DDEBUG" AM_LDFLAGS="-lgcov"
+
+cppcheck:
+	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
+
+lcov:
+	mkdir -p lcov
+	lcov --capture --directory . --output-file coverage.info
+	genhtml coverage.info --output-directory lcov

MemoryMeter.c

@@ -1,71 +1,65 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - MemoryMeter.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 "MemoryMeter.h"
-#include "Meter.h"
 
-#include "ProcessList.h"
+#include "CRT.h"
+#include "Object.h"
+#include "Platform.h"
+#include "RichString.h"
 
-#include <stdlib.h>
-#include <curses.h>
-#include <string.h>
-#include <math.h>
-#include <sys/param.h>
 
-#include "debug.h"
-#include <assert.h>
-
-int MemoryMeter_attributes[] = {
-   MEMORY_USED, MEMORY_BUFFERS, MEMORY_CACHE
+static const int MemoryMeter_attributes[] = {
+   MEMORY_USED,
+   MEMORY_BUFFERS,
+   MEMORY_CACHE
 };
 
-MeterType MemoryMeter = {
-   .setValues = MemoryMeter_setValues, 
-   .display = MemoryMeter_display,
-   .mode = BAR_METERMODE,
-   .items = 3,
-   .total = 100.0,
-   .attributes = MemoryMeter_attributes,
-   "Memory",
-   "Memory",
-   "Mem"
-};
+static void MemoryMeter_updateValues(Meter* this, char* buffer, size_t size) {
+   int written;
+   Platform_setMemoryValues(this);
 
-void MemoryMeter_setValues(Meter* this, char* buffer, int size) {
-   long int usedMem = this->pl->usedMem;
-   long int buffersMem = this->pl->buffersMem;
-   long int cachedMem = this->pl->cachedMem;
-   usedMem -= buffersMem + cachedMem;
-   this->total = this->pl->totalMem;
-   this->values[0] = usedMem;
-   this->values[1] = buffersMem;
-   this->values[2] = cachedMem;
-   snprintf(buffer, size, "%ld/%ldMB", (long int) usedMem / 1024, (long int) this->total / 1024);
+   written = Meter_humanUnit(buffer, this->values[0], size);
+   METER_BUFFER_CHECK(buffer, size, written);
+
+   METER_BUFFER_APPEND_CHR(buffer, size, '/');
+
+   Meter_humanUnit(buffer, this->total, size);
 }
 
-void MemoryMeter_display(Object* cast, RichString* out) {
+static void MemoryMeter_display(const Object* cast, RichString* out) {
    char buffer[50];
-   Meter* this = (Meter*)cast;
-   int div = 1024; char* format = "%ldM ";
-   long int totalMem = this->total / div;
-   long int usedMem = this->values[0] / div;
-   long int buffersMem = this->values[1] / div;
-   long int cachedMem = this->values[2] / div;
-   RichString_init(out);
-   RichString_append(out, CRT_colors[METER_TEXT], ":");
-   sprintf(buffer, format, totalMem);
+   const Meter* this = (const Meter*)cast;
+   RichString_write(out, CRT_colors[METER_TEXT], ":");
+   Meter_humanUnit(buffer, this->total, 50);
    RichString_append(out, CRT_colors[METER_VALUE], buffer);
-   sprintf(buffer, format, usedMem);
+   Meter_humanUnit(buffer, this->values[0], 50);
    RichString_append(out, CRT_colors[METER_TEXT], " used:");
    RichString_append(out, CRT_colors[MEMORY_USED], buffer);
-   sprintf(buffer, format, buffersMem);
+   Meter_humanUnit(buffer, this->values[1], 50);
    RichString_append(out, CRT_colors[METER_TEXT], " buffers:");
-   RichString_append(out, CRT_colors[MEMORY_BUFFERS], buffer);
-   sprintf(buffer, format, cachedMem);
+   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);
 }
+
+const MeterClass MemoryMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = MemoryMeter_display,
+   },
+   .updateValues = MemoryMeter_updateValues,
+   .defaultMode = BAR_METERMODE,
+   .maxItems = 3,
+   .total = 100.0,
+   .attributes = MemoryMeter_attributes,
+   .name = "Memory",
+   .uiName = "Memory",
+   .caption = "Mem"
+};

MemoryMeter.h

@@ -1,33 +1,14 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_MemoryMeter
 #define HEADER_MemoryMeter
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - MemoryMeter.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 "Meter.h"
 
-#include "ProcessList.h"
-
-#include <stdlib.h>
-#include <curses.h>
-#include <string.h>
-#include <math.h>
-#include <sys/param.h>
-
-#include "debug.h"
-#include <assert.h>
-
-extern int MemoryMeter_attributes[];
-
-extern MeterType MemoryMeter;
-
-void MemoryMeter_setValues(Meter* this, char* buffer, int size);
-
-void MemoryMeter_display(Object* cast, RichString* out);
+extern const MeterClass MemoryMeter_class;
 
 #endif

Meter.c

@@ -1,128 +1,411 @@
 /*
 htop - Meter.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#define _GNU_SOURCE
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-#include <curses.h>
-#include <stdarg.h>
+#include "config.h" // IWYU pragma: keep
 
 #include "Meter.h"
-#include "Object.h"
-#include "CRT.h"
-#include "ListItem.h"
-#include "String.h"
-#include "ProcessList.h"
 
-#include "debug.h"
 #include <assert.h>
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
 
-#ifndef USE_FUNKY_MODES
-#define USE_FUNKY_MODES 1
-#endif
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "XUtils.h"
 
-#define METER_BUFFER_LEN 128
 
-/*{
+#define GRAPH_HEIGHT 4 /* Unit: rows (lines) */
 
-typedef struct Meter_ Meter;
-typedef struct MeterType_ MeterType;
-typedef struct MeterMode_ MeterMode;
-
-typedef void(*MeterType_Init)(Meter*);
-typedef void(*MeterType_Done)(Meter*);
-typedef void(*MeterType_SetMode)(Meter*, int);
-typedef void(*Meter_SetValues)(Meter*, char*, int);
-typedef void(*Meter_Draw)(Meter*, int, int, int);
-
-struct MeterMode_ {
-   Meter_Draw draw;
-   char* uiName;
-   int h;
+const MeterClass Meter_class = {
+   .super = {
+      .extends = Class(Object)
+   }
 };
 
-struct MeterType_ {
-   Meter_SetValues setValues;
-   Object_Display display;
-   int mode;
-   int items;
-   double total;
-   int* attributes;
-   char* name;
-   char* uiName;
-   char* caption;
-   MeterType_Init init;
-   MeterType_Done done;
-   MeterType_SetMode setMode;
-   Meter_Draw draw;
+Meter* Meter_new(const struct ProcessList_* pl, int param, const MeterClass* type) {
+   Meter* this = xCalloc(1, sizeof(Meter));
+   Object_setClass(this, type);
+   this->h = 1;
+   this->param = param;
+   this->pl = pl;
+   this->curItems = type->maxItems;
+   this->values = type->maxItems ? xCalloc(type->maxItems, sizeof(double)) : NULL;
+   this->total = type->total;
+   this->caption = xStrdup(type->caption);
+   if (Meter_initFn(this)) {
+      Meter_init(this);
+   }
+   Meter_setMode(this, type->defaultMode);
+   return this;
+}
+
+int Meter_humanUnit(char* buffer, unsigned long int value, size_t size) {
+   const char* prefix = "KMGTPEZY";
+   unsigned long int powi = 1;
+   unsigned int powj = 1, precision = 2;
+
+   for (;;) {
+      if (value / 1024 < powi)
+         break;
+
+      if (prefix[1] == '\0')
+         break;
+
+      powi *= 1024;
+      ++prefix;
+   }
+
+   if (*prefix == 'K')
+      precision = 0;
+
+   for (; precision > 0; precision--) {
+      powj *= 10;
+      if (value / powi < powj)
+         break;
+   }
+
+   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);
+   }
+   free(this->drawData);
+   free(this->caption);
+   free(this->values);
+   free(this);
+}
+
+void Meter_setCaption(Meter* this, const char* caption) {
+   free(this->caption);
+   this->caption = xStrdup(caption);
+}
+
+static inline void Meter_displayBuffer(const Meter* this, const char* buffer, RichString* out) {
+   if (Object_displayFn(this)) {
+      Object_display(this, out);
+   } else {
+      RichString_write(out, CRT_colors[Meter_attributes(this)[0]], buffer);
+   }
+}
+
+void Meter_setMode(Meter* this, int modeIndex) {
+   if (modeIndex > 0 && modeIndex == this->mode) {
+      return;
+   }
+
+   if (!modeIndex) {
+      modeIndex = 1;
+   }
+
+   assert(modeIndex < LAST_METERMODE);
+   if (Meter_defaultMode(this) == CUSTOM_METERMODE) {
+      this->draw = Meter_drawFn(this);
+      if (Meter_updateModeFn(this)) {
+         Meter_updateMode(this, modeIndex);
+      }
+   } else {
+      assert(modeIndex >= 1);
+      free(this->drawData);
+      this->drawData = NULL;
+
+      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[20];
+   if (this->mode) {
+      xSnprintf(mode, sizeof(mode), " [%s]", Meter_modes[this->mode]->uiName);
+   } else {
+      mode[0] = '\0';
+   }
+   char number[10];
+   if (this->param > 0) {
+      xSnprintf(number, sizeof(number), " %d", this->param);
+   } else {
+      number[0] = '\0';
+   }
+   char buffer[50];
+   xSnprintf(buffer, sizeof(buffer), "%s%s%s", Meter_uiName(this), number, mode);
+   ListItem* li = ListItem_new(buffer, 0);
+   li->moving = moving;
+   return li;
+}
+
+/* ---------- TextMeterMode ---------- */
+
+static void TextMeterMode_draw(Meter* this, int x, int y, int w) {
+   char buffer[METER_BUFFER_LEN];
+   Meter_updateValues(this, buffer, sizeof(buffer));
+   (void) w;
+
+   attrset(CRT_colors[METER_TEXT]);
+   mvaddstr(y, x, this->caption);
+   int captionLen = strlen(this->caption);
+   x += captionLen;
+   attrset(CRT_colors[RESET_COLOR]);
+   RichString_begin(out);
+   Meter_displayBuffer(this, buffer, &out);
+   RichString_printVal(out, y, x);
+   RichString_end(out);
+}
+
+/* ---------- BarMeterMode ---------- */
+
+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, sizeof(buffer));
+
+   w -= 2;
+   attrset(CRT_colors[METER_TEXT]);
+   int captionLen = 3;
+   mvaddnstr(y, x, this->caption, captionLen);
+   x += captionLen;
+   w -= captionLen;
+   attrset(CRT_colors[BAR_BORDER]);
+   mvaddch(y, x, '[');
+   mvaddch(y, x + w, ']');
+   attrset(CRT_colors[RESET_COLOR]);
+
+   w--;
+   x++;
+
+   if (w < 1)
+      return;
+
+   // The text in the bar is right aligned;
+   // calculate needed padding and generate leading spaces
+   const int textLen = mbstowcs(NULL, buffer, 0);
+   const int padding = CLAMP(w - textLen, 0, w);
+
+   RichString_begin(bar);
+   RichString_appendChr(&bar, ' ', padding);
+   RichString_append(&bar, 0, buffer);
+   assert(RichString_sizeVal(bar) >= w);
+
+   int blockSizes[10];
+
+   // First draw in the bar[] buffer...
+   int offset = 0;
+   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);
+      } else {
+         blockSizes[i] = 0;
+      }
+      int nextOffset = offset + blockSizes[i];
+      // (Control against invalid values)
+      nextOffset = CLAMP(nextOffset, 0, w);
+      for (int j = offset; j < nextOffset; j++)
+         if (RichString_getCharVal(bar, j) == ' ') {
+            if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
+               RichString_setChar(&bar, j, BarMeterMode_characters[i]);
+            } else {
+               RichString_setChar(&bar, j, '|');
+            }
+         }
+      offset = nextOffset;
+   }
+
+   // ...then print the buffer.
+   offset = 0;
+   for (uint8_t i = 0; i < this->curItems; i++) {
+      RichString_setAttrn(&bar, CRT_colors[Meter_attributes(this)[i]], offset, offset + blockSizes[i] - 1);
+      RichString_printoffnVal(bar, y, x + offset, offset, blockSizes[i]);
+      offset += blockSizes[i];
+      offset = CLAMP(offset, 0, w);
+   }
+   if (offset < w) {
+      RichString_setAttrn(&bar, CRT_colors[BAR_SHADOW], offset, w - 1);
+      RichString_printoffnVal(bar, y, x + offset, offset, w - offset);
+   }
+
+   RichString_end(bar);
+
+   move(y, x + w + 1);
+   attrset(CRT_colors[RESET_COLOR]);
+}
+
+/* ---------- GraphMeterMode ---------- */
+
+#ifdef HAVE_LIBNCURSESW
+
+#define PIXPERROW_UTF8 4
+static const char* const GraphMeterMode_dotsUtf8[] = {
+   /*00*/" ", /*01*/"⢀", /*02*/"⢠", /*03*/"⢰", /*04*/ "⢸",
+   /*10*/"⡀", /*11*/"⣀", /*12*/"⣠", /*13*/"⣰", /*14*/ "⣸",
+   /*20*/"⡄", /*21*/"⣄", /*22*/"⣤", /*23*/"⣴", /*24*/ "⣼",
+   /*30*/"⡆", /*31*/"⣆", /*32*/"⣦", /*33*/"⣶", /*34*/ "⣾",
+   /*40*/"⡇", /*41*/"⣇", /*42*/"⣧", /*43*/"⣷", /*44*/ "⣿"
 };
 
-struct Meter_ {
-   Object super;
-   char* caption;
-   MeterType* type;
-   int mode;
-   int param;
-   Meter_Draw draw;
-   void* drawBuffer;
-   int h;
-   ProcessList* pl;
-   double* values;
-   double total;
+#endif
+
+#define PIXPERROW_ASCII 2
+static const char* const GraphMeterMode_dotsAscii[] = {
+   /*00*/" ", /*01*/".", /*02*/":",
+   /*10*/".", /*11*/".", /*12*/":",
+   /*20*/":", /*21*/":", /*22*/":"
 };
 
-typedef enum {
-   CUSTOM_METERMODE = 0,
-   BAR_METERMODE,
-   TEXT_METERMODE,
-#ifdef USE_FUNKY_MODES
-   GRAPH_METERMODE,
-   LED_METERMODE,
+static const char* const* GraphMeterMode_dots;
+static int GraphMeterMode_pixPerRow;
+
+static void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
+
+   if (!this->drawData) {
+      this->drawData = xCalloc(1, sizeof(GraphData));
+   }
+   GraphData* data = this->drawData;
+   const int nValues = METER_BUFFER_LEN;
+
+#ifdef HAVE_LIBNCURSESW
+   if (CRT_utf8) {
+      GraphMeterMode_dots = GraphMeterMode_dotsUtf8;
+      GraphMeterMode_pixPerRow = PIXPERROW_UTF8;
+   } else
 #endif
-   LAST_METERMODE
-} MeterModeId;
+   {
+      GraphMeterMode_dots = GraphMeterMode_dotsAscii;
+      GraphMeterMode_pixPerRow = PIXPERROW_ASCII;
+   }
 
-}*/
+   attrset(CRT_colors[METER_TEXT]);
+   int captionLen = 3;
+   mvaddnstr(y, x, this->caption, captionLen);
+   x += captionLen;
+   w -= captionLen;
 
-#include "CPUMeter.h"
-#include "MemoryMeter.h"
-#include "SwapMeter.h"
-#include "TasksMeter.h"
-#include "LoadAverageMeter.h"
-#include "UptimeMeter.h"
-#include "ClockMeter.h"
+   struct timeval now;
+   gettimeofday(&now, NULL);
+   if (!timercmp(&now, &(data->time), <)) {
+      int globalDelay = this->pl->settings->delay;
+      struct timeval delay = { .tv_sec = globalDelay / 10, .tv_usec = (globalDelay - ((globalDelay / 10) * 10)) * 100000 };
+      timeradd(&now, &delay, &(data->time));
 
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
+      for (int i = 0; i < nValues - 1; i++)
+         data->values[i] = data->values[i + 1];
 
-#ifdef DEBUG
-char* METER_CLASS = "Meter";
-#else
-#define METER_CLASS NULL
-#endif
+      char buffer[METER_BUFFER_LEN];
+      Meter_updateValues(this, buffer, sizeof(buffer));
 
-MeterType* Meter_types[] = {
-   &CPUMeter,
-   &ClockMeter,
-   &LoadAverageMeter,
-   &LoadMeter,
-   &MemoryMeter,
-   &SwapMeter,
-   &TasksMeter,
-   &UptimeMeter,
-   &AllCPUsMeter,
-   NULL
+      double value = 0.0;
+      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;
+   if (i < 0) {
+      k = -i / 2;
+      i = 0;
+   }
+   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);
+
+      int colorIdx = GRAPH_1;
+      for (int line = 0; line < GRAPH_HEIGHT; line++) {
+         int line1 = CLAMP(v1 - (GraphMeterMode_pixPerRow * (GRAPH_HEIGHT - 1 - line)), 0, GraphMeterMode_pixPerRow);
+         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]);
+         colorIdx = GRAPH_2;
+      }
+   }
+   attrset(CRT_colors[RESET_COLOR]);
+}
+
+/* ---------- LEDMeterMode ---------- */
+
+static const char* const LEDMeterMode_digitsAscii[] = {
+   " __ ", "    ", " __ ", " __ ", "    ", " __ ", " __ ", " __ ", " __ ", " __ ",
+   "|  |", "   |", " __|", " __|", "|__|", "|__ ", "|__ ", "   |", "|__|", "|__|",
+   "|__|", "   |", "|__ ", " __|", "   |", " __|", "|__|", "   |", "|__|", " __|"
 };
 
+#ifdef HAVE_LIBNCURSESW
+
+static const char* const LEDMeterMode_digitsUtf8[] = {
+   "┌──┐", "  ┐ ", "╶──┐", "╶──┐", "╷  ╷", "┌──╴", "┌──╴", "╶──┐", "┌──┐", "┌──┐",
+   "│  │", "  │ ", "┌──┘", " ──┤", "└──┤", "└──┐", "├──┐", "   │", "├──┤", "└──┤",
+   "└──┘", "  ╵ ", "└──╴", "╶──┘", "   ╵", "╶──┘", "└──┘", "   ╵", "└──┘", " ──┘"
+};
+
+#endif
+
+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]);
+}
+
+static void LEDMeterMode_draw(Meter* this, int x, int y, int w) {
+   (void) w;
+
+#ifdef HAVE_LIBNCURSESW
+   if (CRT_utf8)
+      LEDMeterMode_digits = LEDMeterMode_digitsUtf8;
+   else
+#endif
+      LEDMeterMode_digits = LEDMeterMode_digitsAscii;
+
+   char buffer[METER_BUFFER_LEN];
+   Meter_updateValues(this, buffer, sizeof(buffer));
+
+   RichString_begin(out);
+   Meter_displayBuffer(this, buffer, &out);
+
+   int yText =
+#ifdef HAVE_LIBNCURSESW
+      CRT_utf8 ? y + 1 :
+#endif
+      y + 2;
+   attrset(CRT_colors[LED_COLOR]);
+   mvaddstr(yText, x, this->caption);
+   int xx = x + strlen(this->caption);
+   int len = RichString_sizeVal(out);
+   for (int i = 0; i < len; i++) {
+      int c = RichString_getCharVal(out, i);
+      if (c >= '0' && c <= '9') {
+         LEDMeterMode_drawDigit(xx, y, c - 48);
+         xx += 4;
+      } else {
+         mvaddch(yText, xx, c);
+         xx += 1;
+      }
+   }
+   attrset(CRT_colors[RESET_COLOR]);
+   RichString_end(out);
+}
+
 static MeterMode BarMeterMode = {
    .uiName = "Bar",
    .h = 1,
@@ -135,11 +418,9 @@ static MeterMode TextMeterMode = {
    .draw = TextMeterMode_draw,
 };
 
-#ifdef USE_FUNKY_MODES
-
 static MeterMode GraphMeterMode = {
    .uiName = "Graph",
-   .h = 3,
+   .h = GRAPH_HEIGHT,
    .draw = GraphMeterMode_draw,
 };
 
@@ -149,285 +430,43 @@ static MeterMode LEDMeterMode = {
    .draw = LEDMeterMode_draw,
 };
 
-#endif
-
-MeterMode* Meter_modes[] = {
+const MeterMode* const Meter_modes[] = {
    NULL,
    &BarMeterMode,
    &TextMeterMode,
-#ifdef USE_FUNKY_MODES
    &GraphMeterMode,
    &LEDMeterMode,
-#endif
    NULL
 };
 
-static RichString Meter_stringBuffer;
+/* Blank meter */
 
-Meter* Meter_new(ProcessList* pl, int param, MeterType* type) {
-   Meter* this = calloc(sizeof(Meter), 1);
-   Object_setClass(this, METER_CLASS);
-   ((Object*)this)->delete = Meter_delete;
-   ((Object*)this)->display = type->display;
-   this->h = 1;
-   this->type = type;
-   this->param = param;
-   this->pl = pl;
-   this->values = calloc(sizeof(double), type->items);
-   this->total = type->total;
-   this->caption = strdup(type->caption);
-   Meter_setMode(this, type->mode);
-   if (this->type->init)
-      this->type->init(this);
-   return this;
-}
-
-void Meter_delete(Object* cast) {
-   Meter* this = (Meter*) cast;
-   assert (this != NULL);
-   if (this->type->done) {
-      this->type->done(this);
-   }
-   if (this->drawBuffer)
-      free(this->drawBuffer);
-   free(this->caption);
-   free(this->values);
-   free(this);
-}
-
-void Meter_setCaption(Meter* this, char* caption) {
-   free(this->caption);
-   this->caption = strdup(caption);
-}
-
-static inline void Meter_displayToStringBuffer(Meter* this, char* buffer) {
-   MeterType* type = this->type;
-   Object_Display display = ((Object*)this)->display;
-   if (display) {
-      display((Object*)this, &Meter_stringBuffer);
-   } else {
-      RichString_initVal(Meter_stringBuffer);
-      RichString_append(&Meter_stringBuffer, CRT_colors[type->attributes[0]], buffer);
+static void BlankMeter_updateValues(ATTR_UNUSED Meter* this, char* buffer, size_t size) {
+   if (size > 0) {
+      *buffer = 0;
    }
 }
 
-void Meter_setMode(Meter* this, int modeIndex) {
-   if (modeIndex > 0 && modeIndex == this->mode)
-      return;
-   if (!modeIndex)
-      modeIndex = 1;
-   assert(modeIndex < LAST_METERMODE);
-   if (this->type->mode == 0) {
-      this->draw = this->type->draw;
-      if (this->type->setMode)
-         this->type->setMode(this, modeIndex);
-   } else {
-      assert(modeIndex >= 1);
-      if (this->drawBuffer)
-         free(this->drawBuffer);
-      this->drawBuffer = NULL;
-
-      MeterMode* mode = Meter_modes[modeIndex];
-      this->draw = mode->draw;
-      this->h = mode->h;
-   }
-   this->mode = modeIndex;
+static void BlankMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
+   RichString_prune(out);
 }
 
-ListItem* Meter_toListItem(Meter* this) {
-   MeterType* type = this->type;
-   char mode[21];
-   if (this->mode)
-      snprintf(mode, 20, " [%s]", Meter_modes[this->mode]->uiName);
-   else
-      mode[0] = '\0';
-   char number[11];
-   if (this->param > 0)
-      snprintf(number, 10, " %d", this->param);
-   else
-      number[0] = '\0';
-   char buffer[51];
-   snprintf(buffer, 50, "%s%s%s", type->uiName, number, mode);
-   return ListItem_new(buffer, 0);
-}
-
-/* ---------- TextMeterMode ---------- */
-
-void TextMeterMode_draw(Meter* this, int x, int y, int w) {
-   MeterType* type = this->type;
-   char buffer[METER_BUFFER_LEN];
-   type->setValues(this, buffer, METER_BUFFER_LEN - 1);
-
-   attrset(CRT_colors[METER_TEXT]);
-   mvaddstr(y, x, this->caption);
-   int captionLen = strlen(this->caption);
-   w -= captionLen;
-   x += captionLen;
-   Meter_displayToStringBuffer(this, buffer);
-   mvhline(y, x, ' ', CRT_colors[DEFAULT_COLOR]);
-   attrset(CRT_colors[RESET_COLOR]);
-   mvaddchstr(y, x, Meter_stringBuffer.chstr);
-}
-
-/* ---------- BarMeterMode ---------- */
-
-static char BarMeterMode_characters[] = "|#*@$%&";
-
-void BarMeterMode_draw(Meter* this, int x, int y, int w) {
-   MeterType* type = this->type;
-   char buffer[METER_BUFFER_LEN];
-   type->setValues(this, buffer, METER_BUFFER_LEN - 1);
-
-   w -= 2;
-   attrset(CRT_colors[METER_TEXT]);
-   mvaddstr(y, x, this->caption);
-   int captionLen = strlen(this->caption);
-   x += captionLen;
-   w -= captionLen;
-   attrset(CRT_colors[BAR_BORDER]);
-   mvaddch(y, x, '[');
-   mvaddch(y, x + w, ']');
-   
-   w--;
-   x++;
-   char bar[w];
-   
-   int blockSizes[10];
-   for (int i = 0; i < w; i++)
-      bar[i] = ' ';
-
-   sprintf(bar + (w-strlen(buffer)), "%s", buffer);
-
-   // First draw in the bar[] buffer...
-   double total = 0.0;
-   int offset = 0;
-   for (int i = 0; i < type->items; i++) {
-      double value = this->values[i];
-      value = MAX(value, 0);
-      value = MIN(value, this->total);
-      if (value > 0) {
-         blockSizes[i] = ceil((value/this->total) * w);
-      } else {
-         blockSizes[i] = 0;
-      }
-      int nextOffset = offset + blockSizes[i];
-      // (Control against invalid values)
-      nextOffset = MIN(MAX(nextOffset, 0), w);
-      for (int j = offset; j < nextOffset; j++)
-         if (bar[j] == ' ') {
-            if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
-               bar[j] = BarMeterMode_characters[i];
-            } else {
-               bar[j] = '|';
-            }
-         }
-      offset = nextOffset;
-      total += this->values[i];
-   }
-
-   // ...then print the buffer.
-   offset = 0;
-   for (int i = 0; i < type->items; i++) {
-      attrset(CRT_colors[type->attributes[i]]);
-      mvaddnstr(y, x + offset, bar + offset, blockSizes[i]);
-      offset += blockSizes[i];
-      offset = MAX(offset, 0);
-      offset = MIN(offset, w);
-   }
-   if (offset < w) {
-      attrset(CRT_colors[BAR_SHADOW]);
-      mvaddnstr(y, x + offset, bar + offset, w - offset);
-   }
-
-   move(y, x + w + 1);
-   attrset(CRT_colors[RESET_COLOR]);
-}
-
-#ifdef USE_FUNKY_MODES
-
-/* ---------- GraphMeterMode ---------- */
-
-#define DrawDot(a,y,c) do { attrset(a); mvaddch(y, x+k, c); } while(0)
-
-static int GraphMeterMode_colors[21] = {
-   GRAPH_1, GRAPH_1, GRAPH_1,
-   GRAPH_2, GRAPH_2, GRAPH_2,
-   GRAPH_3, GRAPH_3, GRAPH_3,
-   GRAPH_4, GRAPH_4, GRAPH_4,
-   GRAPH_5, GRAPH_5, GRAPH_6,
-   GRAPH_7, GRAPH_7, GRAPH_7,
-   GRAPH_8, GRAPH_8, GRAPH_9
+static const int BlankMeter_attributes[] = {
+   DEFAULT_COLOR
 };
 
-static char* GraphMeterMode_characters = "^`'-.,_~'`-.,_~'`-.,_";
-
-void GraphMeterMode_draw(Meter* this, int x, int y, int w) {
-
-   if (!this->drawBuffer) this->drawBuffer = calloc(sizeof(double), METER_BUFFER_LEN);
-   double* drawBuffer = (double*) this->drawBuffer;
-
-   for (int i = 0; i < METER_BUFFER_LEN - 1; i++)
-      drawBuffer[i] = drawBuffer[i+1];
-
-   MeterType* type = this->type;
-   char buffer[METER_BUFFER_LEN];
-   type->setValues(this, buffer, METER_BUFFER_LEN - 1);
-
-   double value = 0.0;
-   for (int i = 0; i < type->items; i++)
-      value += this->values[i];
-   value /= this->total;
-   drawBuffer[METER_BUFFER_LEN - 1] = value;
-   for (int i = METER_BUFFER_LEN - w, k = 0; i < METER_BUFFER_LEN; i++, k++) {
-      double value = drawBuffer[i];
-      DrawDot( CRT_colors[DEFAULT_COLOR], y, ' ' );
-      DrawDot( CRT_colors[DEFAULT_COLOR], y+1, ' ' );
-      DrawDot( CRT_colors[DEFAULT_COLOR], y+2, ' ' );
-      
-      double threshold = 1.00;
-      for (int i = 0; i < 21; i++, threshold -= 0.05)
-         if (value >= threshold) {
-            DrawDot(CRT_colors[GraphMeterMode_colors[i]], y+(i/7.0), GraphMeterMode_characters[i]);
-            break;
-         }
-   }
-   attrset(CRT_colors[RESET_COLOR]);
-}
-
-/* ---------- LEDMeterMode ---------- */
-
-static char* LEDMeterMode_digits[3][10] = {
-   { " __ ","    "," __ "," __ ","    "," __ "," __ "," __ "," __ "," __ "},
-   { "|  |","   |"," __|"," __|","|__|","|__ ","|__ ","   |","|__|","|__|"},
-   { "|__|","   |","|__ "," __|","   |"," __|","|__|","   |","|__|"," __|"},
+const MeterClass BlankMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = BlankMeter_display,
+   },
+   .updateValues = BlankMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
+   .total = 100.0,
+   .attributes = BlankMeter_attributes,
+   .name = "Blank",
+   .uiName = "Blank",
+   .caption = ""
 };
-
-static void LEDMeterMode_drawDigit(int x, int y, int n) {
-   for (int i = 0; i < 3; i++)
-      mvaddstr(y+i, x, LEDMeterMode_digits[i][n]);
-}
-
-void LEDMeterMode_draw(Meter* this, int x, int y, int w) {
-   MeterType* type = this->type;
-   char buffer[METER_BUFFER_LEN];
-   type->setValues(this, buffer, METER_BUFFER_LEN - 1);
-  
-   Meter_displayToStringBuffer(this, buffer);
-
-   attrset(CRT_colors[LED_COLOR]);
-   mvaddstr(y+2, x, this->caption);
-   int xx = x + strlen(this->caption);
-   for (int i = 0; i < Meter_stringBuffer.len; i++) {
-      char c = Meter_stringBuffer.chstr[i];
-      if (c >= '0' && c <= '9') {
-         LEDMeterMode_drawDigit(xx, y, c-48);
-         xx += 4;
-      } else {
-         mvaddch(y+2, xx, c);
-         xx += 1;
-      }
-   }
-   attrset(CRT_colors[RESET_COLOR]);
-}
-
-#endif

Meter.h

@@ -1,154 +1,141 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Meter
 #define HEADER_Meter
 /*
 htop - Meter.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#define _GNU_SOURCE
-#include <math.h>
-#include <string.h>
-#include <stdlib.h>
-#include <curses.h>
-#include <stdarg.h>
+#include "config.h" // IWYU pragma: keep
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/time.h>
 
-#include "Object.h"
-#include "CRT.h"
 #include "ListItem.h"
-#include "String.h"
+#include "Object.h"
 #include "ProcessList.h"
 
-#include "debug.h"
-#include <assert.h>
 
-#ifndef USE_FUNKY_MODES
-#define USE_FUNKY_MODES 1
-#endif
+#define METER_BUFFER_LEN 256
 
-#define METER_BUFFER_LEN 128
+#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 struct MeterType_ MeterType;
-typedef struct MeterMode_ MeterMode;
 
-typedef void(*MeterType_Init)(Meter*);
-typedef void(*MeterType_Done)(Meter*);
-typedef void(*MeterType_SetMode)(Meter*, int);
-typedef void(*Meter_SetValues)(Meter*, char*, int);
+typedef void(*Meter_Init)(Meter*);
+typedef void(*Meter_Done)(Meter*);
+typedef void(*Meter_UpdateMode)(Meter*, int);
+typedef void(*Meter_UpdateValues)(Meter*, char*, size_t);
 typedef void(*Meter_Draw)(Meter*, int, int, int);
 
-struct MeterMode_ {
-   Meter_Draw draw;
-   char* uiName;
-   int h;
-};
+typedef struct MeterClass_ {
+   const 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* 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;
 
-struct MeterType_ {
-   Meter_SetValues setValues;
-   Object_Display display;
-   int mode;
-   int items;
-   double total;
-   int* attributes;
-   char* name;
-   char* uiName;
-   char* caption;
-   MeterType_Init init;
-   MeterType_Done done;
-   MeterType_SetMode setMode;
-   Meter_Draw draw;
-};
+#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_))
+#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_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_BUFFER_LEN];
+} GraphData;
 
 struct Meter_ {
    Object super;
+   Meter_Draw draw;
+
    char* caption;
-   MeterType* type;
    int mode;
    int param;
-   Meter_Draw draw;
-   void* drawBuffer;
+   GraphData* drawData;
    int h;
-   ProcessList* pl;
+   const ProcessList* pl;
+   uint8_t curItems;
    double* values;
    double total;
+   void* meterData;
 };
 
+typedef struct MeterMode_ {
+   Meter_Draw draw;
+   const char* uiName;
+   int h;
+} MeterMode;
+
 typedef enum {
    CUSTOM_METERMODE = 0,
    BAR_METERMODE,
    TEXT_METERMODE,
-#ifdef USE_FUNKY_MODES
    GRAPH_METERMODE,
    LED_METERMODE,
-#endif
    LAST_METERMODE
 } MeterModeId;
 
+extern const MeterClass Meter_class;
 
-#include "CPUMeter.h"
-#include "MemoryMeter.h"
-#include "SwapMeter.h"
-#include "TasksMeter.h"
-#include "LoadAverageMeter.h"
-#include "UptimeMeter.h"
-#include "ClockMeter.h"
+Meter* Meter_new(const ProcessList* pl, 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
-
-#ifdef DEBUG
-extern char* METER_CLASS;
-#else
-#define METER_CLASS NULL
-#endif
-
-extern MeterType* Meter_types[];
-
-#ifdef USE_FUNKY_MODES
-
-#endif
-
-extern MeterMode* Meter_modes[];
-
-Meter* Meter_new(ProcessList* pl, int param, MeterType* type);
+int Meter_humanUnit(char* buffer, unsigned long int value, size_t size);
 
 void Meter_delete(Object* cast);
 
-void Meter_setCaption(Meter* this, char* caption);
+void Meter_setCaption(Meter* this, const char* caption);
 
 void Meter_setMode(Meter* this, int modeIndex);
 
-ListItem* Meter_toListItem(Meter* this);
+ListItem* Meter_toListItem(Meter* this, bool moving);
 
-/* ---------- TextMeterMode ---------- */
+extern const MeterMode* const Meter_modes[];
 
-void TextMeterMode_draw(Meter* this, int x, int y, int w);
-
-/* ---------- BarMeterMode ---------- */
-
-void BarMeterMode_draw(Meter* this, int x, int y, int w);
-
-#ifdef USE_FUNKY_MODES
-
-/* ---------- GraphMeterMode ---------- */
-
-#define DrawDot(a,y,c) do { attrset(a); mvaddch(y, x+k, c); } while(0)
-
-void GraphMeterMode_draw(Meter* this, int x, int y, int w);
-
-/* ---------- LEDMeterMode ---------- */
-
-void LEDMeterMode_draw(Meter* this, int x, int y, int w);
-
-#endif
+extern const MeterClass BlankMeter_class;
 
 #endif

MetersPanel.c

@@ -1,71 +1,129 @@
+/*
+htop - MetersPanel.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 "MetersPanel.h"
 
-#include "Panel.h"
-#include "Settings.h"
-#include "ScreenManager.h"
+#include <stdlib.h>
 
-#include "debug.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"
 
-/*{
 
-typedef struct MetersPanel_ {
-   Panel super;
+// 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)};
 
-   Settings* settings;
-   Vector* meters;
-   ScreenManager* scr;
-} MetersPanel;
+// 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".
+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 FunctionBar* Meters_movingBar = NULL;
 
-}*/
-
-MetersPanel* MetersPanel_new(Settings* settings, char* header, Vector* meters, ScreenManager* scr) {
-   MetersPanel* this = (MetersPanel*) malloc(sizeof(MetersPanel));
-   Panel* super = (Panel*) this;
-   Panel_init(super, 1, 1, 1, 1, LISTITEM_CLASS, true);
-   ((Object*)this)->delete = MetersPanel_delete;
-
-   this->settings = settings;
-   this->meters = meters;
-   this->scr = scr;
-   super->eventHandler = MetersPanel_EventHandler;
-   Panel_setHeader(super, header);
-   for (int i = 0; i < Vector_size(meters); i++) {
-      Meter* meter = (Meter*) Vector_get(meters, i);
-      Panel_add(super, (Object*) Meter_toListItem(meter));
+void MetersPanel_cleanup() {
+   if (Meters_movingBar) {
+      FunctionBar_delete(Meters_movingBar);
+      Meters_movingBar = NULL;
    }
-   return this;
 }
 
-void MetersPanel_delete(Object* object) {
+static void MetersPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    MetersPanel* this = (MetersPanel*) object;
    Panel_done(super);
    free(this);
 }
 
-HandlerResult MetersPanel_EventHandler(Panel* super, int ch) {
+void MetersPanel_setMoving(MetersPanel* this, bool moving) {
+   Panel* super = (Panel*) this;
+   this->moving = moving;
+   ListItem* selected = (ListItem*)Panel_getSelected(super);
+   if (selected) {
+      selected->moving = moving;
+   }
+   if (!moving) {
+      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+      Panel_setDefaultBar(super);
+   } else {
+      Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOLLOW]);
+      super->currentBar = Meters_movingBar;
+   }
+   FunctionBar_draw(this->super.currentBar);
+}
+
+static inline bool moveToNeighbor(MetersPanel* this, MetersPanel* neighbor, int selected) {
+   Panel* super = (Panel*) this;
+   if (this->moving) {
+      if (neighbor) {
+         if (selected < Vector_size(this->meters)) {
+            MetersPanel_setMoving(this, false);
+
+            Meter* meter = (Meter*) Vector_take(this->meters, selected);
+            Panel_remove(super, selected);
+            Vector_insert(neighbor->meters, selected, meter);
+            Panel_insert(&(neighbor->super), selected, (Object*) Meter_toListItem(meter, false));
+            Panel_setSelected(&(neighbor->super), selected);
+
+            MetersPanel_setMoving(neighbor, true);
+            return true;
+         }
+      }
+   }
+   return false;
+}
+
+static HandlerResult MetersPanel_eventHandler(Panel* super, int ch) {
    MetersPanel* this = (MetersPanel*) super;
 
    int selected = Panel_getSelectedIndex(super);
    HandlerResult result = IGNORED;
+   bool sideMove = false;
 
    switch(ch) {
       case 0x0a:
       case 0x0d:
       case KEY_ENTER:
+      {
+         if (!Vector_size(this->meters))
+            break;
+         MetersPanel_setMoving(this, !(this->moving));
+         result = HANDLED;
+         break;
+      }
+      case ' ':
       case KEY_F(4):
       case 't':
       {
+         if (!Vector_size(this->meters))
+            break;
          Meter* meter = (Meter*) Vector_get(this->meters, selected);
          int mode = meter->mode + 1;
          if (mode == LAST_METERMODE) mode = 1;
          Meter_setMode(meter, mode);
-         Panel_set(super, selected, (Object*) Meter_toListItem(meter));
+         Panel_set(super, selected, (Object*) Meter_toListItem(meter, this->moving));
          result = HANDLED;
          break;
       }
+      case KEY_UP:
+      {
+         if (!this->moving) {
+            break;
+         }
+      }
+         /* else fallthrough */
       case KEY_F(7):
       case '[':
       case '-':
@@ -75,6 +133,13 @@ HandlerResult MetersPanel_EventHandler(Panel* super, int ch) {
          result = HANDLED;
          break;
       }
+      case KEY_DOWN:
+      {
+         if (!this->moving) {
+            break;
+         }
+      }
+         /* else fallthrough */
       case KEY_F(8):
       case ']':
       case '+':
@@ -84,22 +149,76 @@ HandlerResult MetersPanel_EventHandler(Panel* super, int ch) {
          result = HANDLED;
          break;
       }
+      case KEY_RIGHT:
+      {
+         sideMove = moveToNeighbor(this, this->rightNeighbor, selected);
+         if (this->moving && !sideMove) {
+            // lock user here until it exits positioning-mode
+            result = HANDLED;
+         }
+         // if user is free, don't set HANDLED;
+         // let ScreenManager handle focus.
+         break;
+      }
+      case KEY_LEFT:
+      {
+         sideMove = moveToNeighbor(this, this->leftNeighbor, selected);
+         if (this->moving && !sideMove) {
+            result = HANDLED;
+         }
+         break;
+      }
       case KEY_F(9):
       case KEY_DC:
       {
+         if (!Vector_size(this->meters))
+            break;
          if (selected < Vector_size(this->meters)) {
             Vector_remove(this->meters, selected);
             Panel_remove(super, selected);
          }
+         MetersPanel_setMoving(this, false);
          result = HANDLED;
          break;
       }
    }
-   if (result == HANDLED) {
-      Header* header = this->settings->header;
+   if (result == HANDLED || sideMove) {
+      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);
    }
    return result;
 }
+
+const PanelClass MetersPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = MetersPanel_delete
+   },
+   .eventHandler = MetersPanel_eventHandler
+};
+
+MetersPanel* MetersPanel_new(Settings* settings, const char* header, Vector* meters, ScreenManager* scr) {
+   MetersPanel* this = AllocThis(MetersPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(MetersFunctions, MetersKeys, MetersEvents);
+   if (!Meters_movingBar) {
+      Meters_movingBar = FunctionBar_new(MetersMovingFunctions, MetersMovingKeys, MetersMovingEvents);
+   }
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+
+   this->settings = settings;
+   this->meters = meters;
+   this->scr = scr;
+   this->moving = false;
+   this->rightNeighbor = NULL;
+   this->leftNeighbor = NULL;
+   Panel_setHeader(super, header);
+   for (int i = 0; i < Vector_size(meters); i++) {
+      Meter* meter = (Meter*) Vector_get(meters, i);
+      Panel_add(super, (Object*) Meter_toListItem(meter, false));
+   }
+   return this;
+}

MetersPanel.h

@@ -1,30 +1,40 @@
-/* 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 GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
 
+#include <stdbool.h>
 
 #include "Panel.h"
-#include "Settings.h"
 #include "ScreenManager.h"
-
-#include "debug.h"
-#include <assert.h>
+#include "Settings.h"
+#include "Vector.h"
 
 
-typedef struct MetersPanel_ {
+struct MetersPanel_;
+typedef struct MetersPanel_ MetersPanel;
+
+struct MetersPanel_ {
    Panel super;
 
    Settings* settings;
    Vector* meters;
    ScreenManager* scr;
-} MetersPanel;
+   MetersPanel* leftNeighbor;
+   MetersPanel* rightNeighbor;
+   bool moving;
+};
 
+void MetersPanel_cleanup(void);
 
-MetersPanel* MetersPanel_new(Settings* settings, char* header, Vector* meters, ScreenManager* scr);
+void MetersPanel_setMoving(MetersPanel* this, bool moving);
 
-void MetersPanel_delete(Object* object);
+extern const PanelClass MetersPanel_class;
 
-HandlerResult MetersPanel_EventHandler(Panel* super, int ch);
+MetersPanel* MetersPanel_new(Settings* settings, const char* header, Vector* meters, ScreenManager* scr);
 
 #endif

NEWS

@@ -1,5 +1,4 @@
 
-See the ChangeLog for news of the past.
-See the TODO list for news of the future.
+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 +1,125 @@
+#include "NetworkIOMeter.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/time.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Platform.h"
+#include "RichString.h"
+#include "XUtils.h"
+
+
+static const int NetworkIOMeter_attributes[] = {
+   METER_VALUE_IOREAD,
+   METER_VALUE_IOWRITE,
+};
+
+static bool hasData = false;
+
+static unsigned long int cached_rxb_diff = 0;
+static unsigned long int cached_rxp_diff = 0;
+static unsigned long int cached_txb_diff = 0;
+static unsigned long int cached_txp_diff = 0;
+
+static void NetworkIOMeter_updateValues(ATTR_UNUSED Meter* this, char* buffer, size_t len) {
+   static unsigned long long int cached_last_update = 0;
+
+   struct timeval tv;
+   gettimeofday(&tv, NULL);
+   unsigned long long int timeInMilliSeconds = (unsigned long long int)tv.tv_sec * 1000 + (unsigned long long int)tv.tv_usec / 1000;
+   unsigned long long int passedTimeInMs = timeInMilliSeconds - cached_last_update;
+
+   /* update only every 500ms */
+   if (passedTimeInMs > 500) {
+      static unsigned long int cached_rxb_total = 0;
+      static unsigned long int cached_rxp_total = 0;
+      static unsigned long int cached_txb_total = 0;
+      static unsigned long int cached_txp_total = 0;
+
+      cached_last_update = timeInMilliSeconds;
+
+      unsigned long int bytesReceived, packetsReceived, bytesTransmitted, packetsTransmitted;
+
+      hasData = Platform_getNetworkIO(&bytesReceived, &packetsReceived, &bytesTransmitted, &packetsTransmitted);
+      if (!hasData) {
+         xSnprintf(buffer, len, "no data");
+         return;
+      }
+
+      if (bytesReceived > cached_rxb_total) {
+         cached_rxb_diff = (bytesReceived - cached_rxb_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
+         cached_rxb_diff = 1000.0 * cached_rxb_diff / passedTimeInMs; /* convert to per second */
+      } else {
+         cached_rxb_diff = 0;
+      }
+      cached_rxb_total = bytesReceived;
+
+      if (packetsReceived > cached_rxp_total) {
+         cached_rxp_diff = packetsReceived - cached_rxp_total;
+      } else {
+         cached_rxp_diff = 0;
+      }
+      cached_rxp_total = packetsReceived;
+
+      if (bytesTransmitted > cached_txb_total) {
+         cached_txb_diff = (bytesTransmitted - cached_txb_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
+         cached_txb_diff = 1000.0 * cached_txb_diff / passedTimeInMs; /* convert to per second */
+      } else {
+         cached_txb_diff = 0;
+      }
+      cached_txb_total = bytesTransmitted;
+
+      if (packetsTransmitted > cached_txp_total) {
+         cached_txp_diff = packetsTransmitted - cached_txp_total;
+      } else {
+         cached_txp_diff = 0;
+      }
+      cached_txp_total = packetsTransmitted;
+   }
+
+   char bufferBytesReceived[12], bufferBytesTransmitted[12];
+   Meter_humanUnit(bufferBytesReceived, cached_rxb_diff, sizeof(bufferBytesReceived));
+   Meter_humanUnit(bufferBytesTransmitted, cached_txb_diff, sizeof(bufferBytesTransmitted));
+   xSnprintf(buffer, len, "rx:%siB/s tx:%siB/s", bufferBytesReceived, bufferBytesTransmitted);
+}
+
+static void NetworkIOMeter_display(ATTR_UNUSED const Object* cast, RichString* out) {
+   if (!hasData) {
+      RichString_write(out, CRT_colors[METER_VALUE_ERROR], "no data");
+      return;
+   }
+
+   char buffer[64];
+
+   RichString_write(out, CRT_colors[METER_TEXT], "rx: ");
+   Meter_humanUnit(buffer, cached_rxb_diff, sizeof(buffer));
+   RichString_append(out, CRT_colors[METER_VALUE_IOREAD], buffer);
+   RichString_append(out, CRT_colors[METER_VALUE_IOREAD], "iB/s");
+
+   RichString_append(out, CRT_colors[METER_TEXT], " tx: ");
+   Meter_humanUnit(buffer, cached_txb_diff, sizeof(buffer));
+   RichString_append(out, CRT_colors[METER_VALUE_IOWRITE], buffer);
+   RichString_append(out, CRT_colors[METER_VALUE_IOWRITE], "iB/s");
+
+   xSnprintf(buffer, sizeof(buffer), " (%lu/%lu packets) ", cached_rxp_diff, cached_txp_diff);
+   RichString_append(out, CRT_colors[METER_TEXT], buffer);
+}
+
+const MeterClass NetworkIOMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = NetworkIOMeter_display
+   },
+   .updateValues = NetworkIOMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 0,
+   .total = 100.0,
+   .attributes = NetworkIOMeter_attributes,
+   .name = "NetworkIO",
+   .uiName = "Network IO",
+   .caption = "Network: "
+};

NetworkIOMeter.h

@@ -0,0 +1,8 @@
+#ifndef HEADER_NetworkIOMeter
+#define HEADER_NetworkIOMeter
+
+#include "Meter.h"
+
+extern const MeterClass NetworkIOMeter_class;
+
+#endif /* HEADER_NetworkIOMeter */

Object.c

@@ -1,57 +1,33 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - Object.c
+(C) 2004-2012 Hisham H. Muhammad
+(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 "CRT.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdbool.h>
 
-#include "debug.h"
+#include <stddef.h>
 
-/*{
 
-#ifndef DEBUG
-#define Object_setClass(obj, class)
-#endif
-
-typedef struct Object_ Object;
-
-typedef void(*Object_Display)(Object*, RichString*);
-typedef int(*Object_Compare)(const void*, const void*);
-typedef void(*Object_Delete)(Object*);
-
-struct Object_ {
-   #ifdef DEBUG
-   char* class;
-   #endif
-   Object_Display display;
-   Object_Delete delete;
+const ObjectClass Object_class = {
+   .extends = NULL
 };
-}*/
 
-#ifdef DEBUG
-char* OBJECT_CLASS = "Object";
+#ifndef NDEBUG
 
-#else
-#define OBJECT_CLASS NULL
-#endif
+bool Object_isA(const Object* o, const ObjectClass* klass) {
+   if (!o)
+      return false;
 
-#ifdef DEBUG
-
-void Object_setClass(void* this, char* class) {
-   ((Object*)this)->class = class;
+   for (const ObjectClass* type = o->klass; type; type = type->extends) {
+      if (type == klass) {
+         return true;
+      }
    }
 
-void Object_display(Object* this, RichString* out) {
-   char objAddress[50];
-   sprintf(objAddress, "%s @ %p", this->class, (void*) this);
-   RichString_write(out, CRT_colors[DEFAULT_COLOR], objAddress);
+   return false;
 }
 
-#endif
+#endif /* NDEBUG */

Object.h

@@ -1,54 +1,66 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Object
 #define HEADER_Object
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - Object.h
+(C) 2004-2012 Hisham H. Muhammad
+(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 <assert.h>
+
 #include "RichString.h"
-#include "CRT.h"
-#include <stdlib.h>
-#include <stdio.h>
+#include "XUtils.h" // IWYU pragma: keep
+
+#ifndef NDEBUG
 #include <stdbool.h>
-
-#include "debug.h"
-
-
-#ifndef DEBUG
-#define Object_setClass(obj, class)
 #endif
 
+
+struct Object_;
 typedef struct Object_ Object;
 
-typedef void(*Object_Display)(Object*, RichString*);
-typedef int(*Object_Compare)(const void*, const void*);
+typedef void(*Object_Display)(const Object*, RichString*);
+typedef long(*Object_Compare)(const void*, const void*);
 typedef void(*Object_Delete)(Object*);
 
+#define Object_getClass(obj_)         ((const Object*)(obj_))->klass
+#define Object_setClass(obj_, class_) (((Object*)(obj_))->klass = (const ObjectClass*) (class_))
+
+#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_)    (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_)                 ((const ObjectClass*)(&(class_ ## _class)))
+
+#define AllocThis(class_) (class_*)   xMalloc(sizeof(class_)); Object_setClass(this, Class(class_))
+
+typedef struct ObjectClass_ {
+   const void* const extends;
+   const Object_Display display;
+   const Object_Delete delete;
+   const Object_Compare compare;
+} ObjectClass;
+
 struct Object_ {
-   #ifdef DEBUG
-   char* class;
-   #endif
-   Object_Display display;
-   Object_Delete delete;
+   const ObjectClass* klass;
 };
 
-#ifdef DEBUG
-extern char* OBJECT_CLASS;
+typedef union {
+   int i;
+   void* v;
+} Arg;
 
-#else
-#define OBJECT_CLASS NULL
-#endif
+extern const ObjectClass Object_class;
 
-#ifdef DEBUG
+#ifndef NDEBUG
 
-void Object_setClass(void* this, char* class);
+bool Object_isA(const Object* o, const ObjectClass* klass);
 
-void Object_display(Object* this, RichString* out);
-
-#endif
+#endif /* NDEBUG */
 
 #endif

OpenFilesScreen.c

@@ -0,0 +1,247 @@
+/*
+htop - OpenFilesScreen.c
+(C) 2005-2006 Hisham H. Muhammad
+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 <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include "Macros.h"
+#include "Panel.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+
+typedef struct OpenFiles_Data_ {
+   char* data[7];
+} 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;
+
+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();
+}
+
+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(const Process* process) {
+   OpenFilesScreen* this = xMalloc(sizeof(OpenFilesScreen));
+   Object_setClass(this, Class(OpenFilesScreen));
+   if (Process_isThread(process)) {
+      this->pid = process->tgid;
+   } else {
+      this->pid = process->pid;
+   }
+   return (OpenFilesScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 3, "   FD TYPE    MODE DEVICE           SIZE       NODE  NAME");
+}
+
+void OpenFilesScreen_delete(Object* this) {
+   free(InfoScreen_done((InfoScreen*)this));
+}
+
+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) {
+   OpenFiles_ProcessData* pdata = xCalloc(1, sizeof(OpenFiles_ProcessData));
+
+   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 = 1;
+      return pdata;
+   }
+   for (;;) {
+      char* line = String_readLine(fd);
+      if (!line) {
+         break;
+      }
+
+      unsigned char cmd = line[0];
+      switch (cmd) {
+      case 'f':  /* file descriptor */
+      {
+         OpenFiles_FileData* nextFile = xCalloc(1, sizeof(OpenFiles_FileData));
+         if (fdata == NULL) {
+            pdata->files = nextFile;
+         } else {
+            fdata->next = nextFile;
+         }
+         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;
+      }
+      free(line);
+   }
+   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 void OpenFiles_Data_clear(OpenFiles_Data* data) {
+   for (size_t i = 0; i < ARRAYSIZE(data->data); i++)
+      free(data->data[i]);
+}
+
+static void OpenFilesScreen_scan(InfoScreen* this) {
+   Panel* panel = this->display;
+   int idx = Panel_getSelectedIndex(panel);
+   Panel_prune(panel);
+   OpenFiles_ProcessData* pdata = OpenFilesScreen_getProcessData(((OpenFilesScreen*)this)->pid);
+   if (pdata->error == 127) {
+      InfoScreen_addLine(this, "Could not execute 'lsof'. Please make sure it is available in your $PATH.");
+   } else if (pdata->error == 1) {
+      InfoScreen_addLine(this, "Failed listing open files.");
+   } else {
+      OpenFiles_FileData* fdata = pdata->files;
+      while (fdata) {
+         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(data);
+         OpenFiles_FileData* old = fdata;
+         fdata = fdata->next;
+         free(old);
+      }
+      OpenFiles_Data_clear(&pdata->data);
+   }
+   free(pdata);
+   Vector_insertionSort(this->lines);
+   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

@@ -0,0 +1,27 @@
+#ifndef HEADER_OpenFilesScreen
+#define HEADER_OpenFilesScreen
+/*
+htop - OpenFilesScreen.h
+(C) 2005-2006 Hisham H. Muhammad
+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 OpenFilesScreen_ {
+   InfoScreen super;
+   pid_t pid;
+} OpenFilesScreen;
+
+extern const InfoScreenClass OpenFilesScreen_class;
+
+OpenFilesScreen* OpenFilesScreen_new(const Process* process);
+
+void OpenFilesScreen_delete(Object* 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_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->super.text);
+}
+
+static void NumberItem_display(const Object* cast, RichString* out) {
+   const NumberItem* this = (const NumberItem*)cast;
+   assert (this != NULL);
+
+   char buffer[12];
+   RichString_write(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_append(out, CRT_colors[CHECK_MARK], buffer);
+   RichString_append(out, CRT_colors[CHECK_BOX], "]");
+   for (int i = written; i < 5; i++) {
+      RichString_append(out, CRT_colors[CHECK_BOX], " ");
+   }
+   RichString_append(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

@@ -1,73 +1,40 @@
 /*
 htop - Panel.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Object.h"
 #include "Panel.h"
-#include "Vector.h"
-#include "CRT.h"
-#include "RichString.h"
-#include "ListItem.h"
 
-#include <math.h>
-#include <stdbool.h>
-
-#include "debug.h"
 #include <assert.h>
+#include <ctype.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
 
-#include <curses.h>
-//#link curses
+#include "CRT.h"
+#include "ListItem.h"
+#include "Macros.h"
+#include "ProvideCurses.h"
+#include "RichString.h"
+#include "XUtils.h"
 
-/*{
 
-typedef struct Panel_ Panel;
-
-typedef enum HandlerResult_ {
-   HANDLED,
-   IGNORED,
-   BREAK_LOOP
-} HandlerResult;
-
-typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
-
-struct Panel_ {
-   Object super;
-   int x, y, w, h;
-   WINDOW* window;
-   Vector* items;
-   int selected;
-   int scrollV, scrollH;
-   int scrollHAmount;
-   int oldSelected;
-   bool needsRedraw;
-   RichString header;
-   Panel_EventHandler eventHandler;
+const PanelClass Panel_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = Panel_delete
+   },
+   .eventHandler = Panel_selectByTyping,
 };
 
-}*/
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-#ifndef MAX
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#endif
-
-#ifdef DEBUG
-char* PANEL_CLASS = "Panel";
-#else
-#define PANEL_CLASS NULL
-#endif
-
-
-Panel* Panel_new(int x, int y, int w, int h, char* type, bool owner, Object_Compare compare) {
+Panel* Panel_new(int x, int y, int w, int h, bool owner, const ObjectClass* type, FunctionBar* fuBar) {
    Panel* this;
-   this = malloc(sizeof(Panel));
-   Panel_init(this, x, y, w, h, type, owner);
-   this->items->compare = compare;
+   this = xMalloc(sizeof(Panel));
+   Object_setClass(this, Class(Panel));
+   Panel_init(this, x, y, w, h, type, owner, fuBar);
    return this;
 }
 
@@ -77,46 +44,46 @@ void Panel_delete(Object* cast) {
    free(this);
 }
 
-void Panel_init(Panel* this, int x, int y, int w, int h, char* type, bool owner) {
-   Object* super = (Object*) this;
-   Object_setClass(this, PANEL_CLASS);
-   super->delete = Panel_delete;
+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;
    this->h = h;
-   this->eventHandler = NULL;
-   this->items = Vector_new(type, owner, DEFAULT_SIZE, ListItem_compare);
+   this->eventHandlerState = NULL;
+   this->items = Vector_new(type, owner, DEFAULT_SIZE);
    this->scrollV = 0;
    this->scrollH = 0;
    this->selected = 0;
    this->oldSelected = 0;
    this->needsRedraw = true;
-   this->header.len = 0;
-   if (String_eq(CRT_termType, "linux"))
-      this->scrollHAmount = 40;
-   else
-      this->scrollHAmount = 5;
+   RichString_beginAllocated(this->header);
+   this->defaultBar = fuBar;
+   this->currentBar = fuBar;
+   this->selectionColor = CRT_colors[PANEL_SELECTION_FOCUS];
 }
 
 void Panel_done(Panel* this) {
    assert (this != NULL);
+   free(this->eventHandlerState);
    Vector_delete(this->items);
+   FunctionBar_delete(this->defaultBar);
+   RichString_end(this->header);
 }
 
-inline void Panel_setRichHeader(Panel* this, RichString header) {
+void Panel_setSelectionColor(Panel* this, int color) {
+   this->selectionColor = color;
+}
+
+RichString* Panel_getHeader(Panel* this) {
    assert (this != NULL);
 
-   this->header = header;
    this->needsRedraw = true;
+   return &(this->header);
 }
 
-inline void Panel_setHeader(Panel* this, char* header) {
-   Panel_setRichHeader(this, RichString_quickString(CRT_colors[PANEL_HEADER_FOCUS], header));
-}
-
-void Panel_setEventHandler(Panel* this, Panel_EventHandler eh) {
-   this->eventHandler = eh;
+inline void Panel_setHeader(Panel* this, const char* header) {
+   RichString_write(&(this->header), CRT_colors[PANEL_HEADER_FOCUS], header);
+   this->needsRedraw = true;
 }
 
 void Panel_move(Panel* this, int x, int y) {
@@ -130,8 +97,10 @@ void Panel_move(Panel* this, int x, int y) {
 void Panel_resize(Panel* this, int w, int h) {
    assert (this != NULL);
 
-   if (this->header.len > 0)
+   if (RichString_sizeVal(this->header) > 0) {
       h--;
+   }
+
    this->w = w;
    this->h = h;
    this->needsRedraw = true;
@@ -178,32 +147,39 @@ 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) {
       return Vector_get(this->items, this->selected);
+   } 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) {
    assert (this != NULL);
@@ -211,7 +187,7 @@ int Panel_getSelectedIndex(Panel* this) {
    return this->selected;
 }
 
-int Panel_getSize(Panel* this) {
+int Panel_size(Panel* this) {
    assert (this != NULL);
 
    return Vector_size(this->items);
@@ -220,142 +196,282 @@ int Panel_getSize(Panel* this) {
 void Panel_setSelected(Panel* this, int selected) {
    assert (this != NULL);
 
-   selected = MAX(0, MIN(Vector_size(this->items) - 1, selected));
+   int size = Vector_size(this->items);
+   if (selected >= size) {
+      selected = size - 1;
+   }
+   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 focus, bool highlightSelected) {
    assert (this != NULL);
 
-   int first, last;
-   int itemCount = Vector_size(this->items);
+   int size = Vector_size(this->items);
    int scrollH = this->scrollH;
-   int y = this->y; int x = this->x;
-   first = this->scrollV;
+   int y = this->y;
+   int x = this->x;
+   int h = this->h;
 
-   if (this->h > itemCount) {
-      last = this->scrollV + itemCount;
-      move(y + last, x + 0);
-   } else {
-      last = MIN(itemCount, this->scrollV + this->h);
-   }
-   if (this->selected < first) {
-      first = this->selected;
-      this->scrollV = first;
-      this->needsRedraw = true;
-   }
-   if (this->selected >= last) {
-      last = MIN(itemCount, this->selected + 1);
-      first = MAX(0, last - this->h);
-      this->scrollV = first;
-      this->needsRedraw = true;
-   }
-   assert(first >= 0);
-   assert(last <= itemCount);
-
-   if (this->header.len > 0) {
+   int headerLen = RichString_sizeVal(this->header);
+   if (headerLen > 0) {
       int attr = focus
                ? CRT_colors[PANEL_HEADER_FOCUS]
                : CRT_colors[PANEL_HEADER_UNFOCUS];
       attrset(attr);
       mvhline(y, x, ' ', this->w);
-      if (scrollH < this->header.len) {
-         mvaddchnstr(y, x, this->header.chstr + scrollH,
-                     MIN(this->header.len - scrollH, this->w));
+      if (scrollH < headerLen) {
+         RichString_printoffnVal(this->header, y, x, scrollH,
+            MINIMUM(headerLen - scrollH, this->w));
       }
       attrset(CRT_colors[RESET_COLOR]);
       y++;
    }
 
-   int highlight = focus
-                 ? CRT_colors[PANEL_HIGHLIGHT_FOCUS]
-                 : CRT_colors[PANEL_HIGHLIGHT_UNFOCUS];
+   // ensure scroll area is on screen
+   if (this->scrollV < 0) {
+      this->scrollV = 0;
+      this->needsRedraw = true;
+   } else if (this->scrollV >= size) {
+      this->scrollV = MAXIMUM(size - 1, 0);
+      this->needsRedraw = true;
+   }
+   // ensure selection is on screen
+   if (this->selected < this->scrollV) {
+      this->scrollV = this->selected;
+      this->needsRedraw = true;
+   } else if (this->selected >= this->scrollV + h) {
+      this->scrollV = this->selected - h + 1;
+      this->needsRedraw = true;
+   }
+
+   int first = this->scrollV;
+   int upTo = MINIMUM(first + h, size);
+
+   int selectionColor = focus
+                      ? this->selectionColor
+                      : CRT_colors[PANEL_SELECTION_UNFOCUS];
 
    if (this->needsRedraw) {
-
-      for(int i = first, j = 0; j < this->h && i < last; i++, j++) {
+      int line = 0;
+      for (int i = first; line < h && i < upTo; i++) {
          Object* itemObj = Vector_get(this->items, i);
-         RichString itemRef;
-         RichString_initVal(itemRef);
-         itemObj->display(itemObj, &itemRef);
-         int amt = MIN(itemRef.len - scrollH, this->w);
-         if (i == this->selected) {
-            attrset(highlight);
-            RichString_setAttr(&itemRef, highlight);
-            mvhline(y + j, x+0, ' ', this->w);
+         RichString_begin(item);
+         Object_display(itemObj, &item);
+         int itemLen = RichString_sizeVal(item);
+         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)
-               mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
+            RichString_printoffnVal(item, y + line, x, scrollH, amt);
+         if (item.highlightAttr)
             attrset(CRT_colors[RESET_COLOR]);
-         } else {
-            mvhline(y+j, x+0, ' ', this->w);
-            if (amt > 0)
-               mvaddchnstr(y+j, x+0, itemRef.chstr + scrollH, amt);
+         RichString_end(item);
+         line++;
       }
+      while (line < h) {
+         mvhline(y + line, x, ' ', this->w);
+         line++;
       }
-      for (int i = y + (last - first); i < y + this->h; i++)
-         mvhline(i, x+0, ' ', this->w);
       this->needsRedraw = false;
 
    } else {
       Object* oldObj = Vector_get(this->items, this->oldSelected);
-      RichString oldRef;
-      RichString_initVal(oldRef);
-      oldObj->display(oldObj, &oldRef);
+      RichString_begin(old);
+      Object_display(oldObj, &old);
+      int oldLen = RichString_sizeVal(old);
       Object* newObj = Vector_get(this->items, this->selected);
-      RichString newRef;
-      RichString_initVal(newRef);
-      newObj->display(newObj, &newRef);
-      mvhline(y+ this->oldSelected - this->scrollV, x+0, ' ', this->w);
-      if (scrollH < oldRef.len)
-         mvaddchnstr(y+ this->oldSelected - this->scrollV, x+0, oldRef.chstr + this->scrollH, MIN(oldRef.len - scrollH, this->w));
-      attrset(highlight);
-      mvhline(y+this->selected - this->scrollV, x+0, ' ', this->w);
-      RichString_setAttr(&newRef, highlight);
-      if (scrollH < newRef.len)
-         mvaddchnstr(y+this->selected - this->scrollV, x+0, newRef.chstr + this->scrollH, MIN(newRef.len - scrollH, this->w));
+      RichString_begin(new);
+      Object_display(newObj, &new);
+      int newLen = RichString_sizeVal(new);
+      this->selectedLen = newLen;
+      mvhline(y + this->oldSelected - first, x + 0, ' ', this->w);
+      if (scrollH < oldLen)
+         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);
+      RichString_setAttr(&new, selectionColor);
+      if (scrollH < newLen)
+         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);
    }
    this->oldSelected = this->selected;
    move(0, 0);
 }
 
-void Panel_onKey(Panel* this, int key) {
+bool Panel_onKey(Panel* this, int key) {
    assert (this != NULL);
+
+   int size = Vector_size(this->items);
+
+   #define CLAMP_INDEX(var, delta, min, max) \
+      CLAMP((var) + (delta), (min), MAXIMUM(0, (max)))
+
    switch (key) {
    case KEY_DOWN:
-      if (this->selected + 1 < Vector_size(this->items))
+   case KEY_CTRL('N'):
+   #ifdef KEY_C_DOWN
+   case KEY_C_DOWN:
+   #endif
       this->selected++;
       break;
+
    case KEY_UP:
-      if (this->selected > 0)
+   case KEY_CTRL('P'):
+   #ifdef KEY_C_UP
+   case KEY_C_UP:
+   #endif
       this->selected--;
       break;
+
    case KEY_LEFT:
+   case KEY_CTRL('B'):
       if (this->scrollH > 0) {
-         this->scrollH -= this->scrollHAmount;
+         this->scrollH -= MAXIMUM(CRT_scrollHAmount, 0);
          this->needsRedraw = true;
       }
       break;
+
    case KEY_RIGHT:
-      this->scrollH += this->scrollHAmount;
+   case KEY_CTRL('F'):
+      this->scrollH += CRT_scrollHAmount;
       this->needsRedraw = true;
       break;
+
    case KEY_PPAGE:
-      this->selected -= this->h;
-      if (this->selected < 0)
-         this->selected = 0;
+      this->selected -= (this->h - 1);
+      this->scrollV = CLAMP_INDEX(this->scrollV, -(this->h - 1), 0, size - this->h);
+      this->needsRedraw = true;
       break;
+
    case KEY_NPAGE:
-      this->selected += this->h;
-      int size = Vector_size(this->items);
-      if (this->selected >= size)
-         this->selected = size - 1;
+      this->selected += (this->h - 1);
+      this->scrollV = CLAMP_INDEX(this->scrollV, +(this->h - 1), 0, size - this->h);
+      this->needsRedraw = true;
       break;
+
+   case KEY_WHEELUP:
+      this->selected -= CRT_scrollWheelVAmount;
+      this->scrollV = CLAMP_INDEX(this->scrollV, -CRT_scrollWheelVAmount, 0, size - this->h);
+      this->needsRedraw = true;
+      break;
+
+   case KEY_WHEELDOWN:
+      this->selected += CRT_scrollWheelVAmount;
+      this->scrollV = CLAMP_INDEX(this->scrollV, +CRT_scrollWheelVAmount, 0, size - this->h);
+      this->needsRedraw = true;
+      break;
+
    case KEY_HOME:
       this->selected = 0;
       break;
+
    case KEY_END:
-      this->selected = Vector_size(this->items) - 1;
+      this->selected = size - 1;
       break;
+
+   case KEY_CTRL('A'):
+   case '^':
+      this->scrollH = 0;
+      this->needsRedraw = true;
+      break;
+   case KEY_CTRL('E'):
+   case '$':
+      this->scrollH = MAXIMUM(this->selectedLen - this->w, 0);
+      this->needsRedraw = true;
+      break;
+   default:
+      return false;
+   }
+
+   #undef CLAMP_INDEX
+
+   // ensure selection within bounds
+   if (this->selected < 0 || size == 0) {
+      this->selected = 0;
+      this->needsRedraw = true;
+   } 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 (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';
+      }
+
+      for (int try = 0; try < 2; try++) {
+         len = strlen(buffer);
+         for (int i = 0; i < size; i++) {
+            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

@@ -1,82 +1,85 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Panel
 #define HEADER_Panel
 /*
 htop - Panel.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
-#include "Object.h"
-#include "Vector.h"
-#include "CRT.h"
-#include "RichString.h"
-#include "ListItem.h"
-
-#include <math.h>
 #include <stdbool.h>
 
-#include "debug.h"
-#include <assert.h>
-
-#include <curses.h>
-//#link curses
+#include "FunctionBar.h"
+#include "Object.h"
+#include "RichString.h"
+#include "Vector.h"
 
 
+struct Panel_;
 typedef struct Panel_ Panel;
 
 typedef enum HandlerResult_ {
-   HANDLED,
-   IGNORED,
-   BREAK_LOOP
+   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_)                ((const 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 scrollV, scrollH;
-   int scrollHAmount;
    int oldSelected;
+   int selectedLen;
+   void* eventHandlerState;
+   int scrollV;
+   short scrollH;
    bool needsRedraw;
+   FunctionBar* currentBar;
+   FunctionBar* defaultBar;
    RichString header;
-   Panel_EventHandler eventHandler;
+   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)
 
-#ifdef DEBUG
-extern char* PANEL_CLASS;
-#else
-#define PANEL_CLASS NULL
-#endif
+extern const PanelClass Panel_class;
 
-
-Panel* Panel_new(int x, int y, int w, int h, char* type, bool owner, Object_Compare compare);
+Panel* Panel_new(int x, int y, int w, int h, bool owner, const ObjectClass* type, FunctionBar* fuBar);
 
 void Panel_delete(Object* cast);
 
-void Panel_init(Panel* this, int x, int y, int w, int h, char* type, bool owner);
+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);
 
-inline void Panel_setRichHeader(Panel* this, RichString header);
+void Panel_setSelectionColor(Panel* this, int color);
 
-inline void Panel_setHeader(Panel* this, char* header);
+RichString* Panel_getHeader(Panel* this);
 
-void Panel_setEventHandler(Panel* this, Panel_EventHandler eh);
+void Panel_setHeader(Panel* this, const char* header);
 
 void Panel_move(Panel* this, int x, int y);
 
@@ -102,12 +105,16 @@ void Panel_moveSelectedDown(Panel* this);
 
 int Panel_getSelectedIndex(Panel* this);
 
-int Panel_getSize(Panel* this);
+int Panel_size(Panel* this);
 
 void Panel_setSelected(Panel* this, int selected);
 
-void Panel_draw(Panel* this, bool focus);
+void Panel_draw(Panel* this, bool focus, bool highlightSelected);
 
-void Panel_onKey(Panel* this, int key);
+void Panel_splice(Panel* this, Vector* from);
+
+bool Panel_onKey(Panel* this, int key);
+
+HandlerResult Panel_selectByTyping(Panel* this, int ch);
 
 #endif

Process.c

@@ -1,439 +1,560 @@
 /*
 htop - Process.c
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2015 Hisham H. Muhammad
+(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.
 */
 
-#define _GNU_SOURCE
-#include "ProcessList.h"
-#include "Object.h"
-#include "CRT.h"
-#include "String.h"
+#include "config.h" // IWYU pragma: keep
+
 #include "Process.h"
 
-#include "debug.h"
-
-#include <stdio.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
+#include <assert.h>
+#include <limits.h>
+#include <math.h>
 #include <signal.h>
-#include <string.h>
 #include <stdbool.h>
-#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/resource.h>
 
-// This works only with glibc 2.1+. On earlier versions
-// the behavior is similar to have a hardcoded page size.
-#define PAGE_SIZE ( sysconf(_SC_PAGESIZE) / 1024 )
+#include "CRT.h"
+#include "Macros.h"
+#include "Platform.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "XUtils.h"
 
-#define PROCESS_COMM_LEN 300
-
-/*{
-
-typedef enum ProcessField_ {
-   PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
-   STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
-   STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
-   PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
-   USER, TIME, LAST_PROCESSFIELD
-} ProcessField;
-
-struct ProcessList_;
-
-typedef struct Process_ {
-   Object super;
-
-   struct ProcessList_ *pl;
-   bool updated;
-
-   int pid;
-   char* comm;
-   int indent;
-   char state;
-   bool tag;
-   int ppid;
-   int pgrp;
-   int session;
-   int tty_nr;
-   int tpgid;
-   unsigned long int flags;
-   #ifdef DEBUG
-   unsigned long int minflt;
-   unsigned long int cminflt;
-   unsigned long int majflt;
-   unsigned long int cmajflt;
-   #endif
-   unsigned long int utime;
-   unsigned long int stime;
-   long int cutime;
-   long int cstime;
-   long int priority;
-   long int nice;
-   #ifdef DEBUG
-   long int itrealvalue;
-   unsigned long int starttime;
-   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
-   int exit_signal;
-   int processor;
-   int m_size;
-   int m_resident;
-   int m_share;
-   int m_trs;
-   int m_drs;
-   int m_lrs;
-   int m_dt;
-   uid_t st_uid;
-   float percent_cpu;
-   float percent_mem;
-   char* user;
-} Process;
-
-}*/
-
-#ifdef DEBUG
-char* PROCESS_CLASS = "Process";
-#else
-#define PROCESS_CLASS NULL
+#if defined(MAJOR_IN_MKDEV)
+#include <sys/mkdev.h>
+#elif defined(MAJOR_IN_SYSMACROS)
+#include <sys/sysmacros.h>
 #endif
 
-char *Process_fieldNames[] = {
-   "", "PID", "Command", "STATE", "PPID", "PGRP", "SESSION", "TTY_NR", "TPGID", "FLAGS", "MINFLT", "CMINFLT", "MAJFLT", "CMAJFLT", "UTIME", "STIME", "CUTIME", "CSTIME", "PRIORITY", "NICE", "ITREALVALUE", "STARTTIME", "VSIZE", "RSS", "RLIM", "STARTCODE", "ENDCODE", "STARTSTACK", "KSTKESP", "KSTKEIP", "SIGNAL", "BLOCKED", "SIGIGNORE", "SIGCATCH", "WCHAN", "NSWAP", "CNSWAP", "EXIT_SIGNAL",  "PROCESSOR", "M_SIZE", "M_RESIDENT", "M_SHARE", "M_TRS", "M_DRS", "M_LRS", "M_DT", "ST_UID", "PERCENT_CPU", "PERCENT_MEM", "USER", "TIME", "*** report bug! ***"
+
+static uid_t Process_getuid = (uid_t)-1;
+
+char Process_pidFormat[20] = "%7d ";
+
+static char Process_titleBuffer[20][20];
+
+void Process_setupColumnWidths() {
+   int maxPid = Platform_getMaxPid();
+   if (maxPid == -1)
+      return;
+
+   int digits = ceil(log10(maxPid));
+   assert(digits < 20);
+   for (int i = 0; Process_pidColumns[i].label; i++) {
+      assert(i < 20);
+      xSnprintf(Process_titleBuffer[i], 20, "%*s ", digits, Process_pidColumns[i].label);
+      Process_fields[Process_pidColumns[i].id].title = Process_titleBuffer[i];
+   }
+   xSnprintf(Process_pidFormat, sizeof(Process_pidFormat), "%%%dd ", digits);
+}
+
+void Process_humanNumber(RichString* str, unsigned long long number, bool coloring) {
+   char buffer[10];
+   int len;
+
+   int largeNumberColor = CRT_colors[LARGE_NUMBER];
+   int processMegabytesColor = CRT_colors[PROCESS_MEGABYTES];
+   int processGigabytesColor = CRT_colors[PROCESS_GIGABYTES];
+   int processColor = CRT_colors[PROCESS];
+   if (!coloring) {
+      largeNumberColor = CRT_colors[PROCESS];
+      processMegabytesColor = CRT_colors[PROCESS];
+      processGigabytesColor = CRT_colors[PROCESS];
+   }
+
+   if (number < 1000) {
+      //Plain number, no markings
+      len = xSnprintf(buffer, sizeof(buffer), "%5llu ", number);
+      RichString_appendn(str, processColor, buffer, len);
+   } else if (number < 100000) {
+      //2 digit MB, 3 digit KB
+      len = xSnprintf(buffer, sizeof(buffer), "%2llu", number/1000);
+      RichString_appendn(str, processMegabytesColor, buffer, len);
+      number %= 1000;
+      len = xSnprintf(buffer, sizeof(buffer), "%03llu ", number);
+      RichString_appendn(str, processColor, buffer, len);
+   } else if (number < 1000 * ONE_K) {
+      //3 digit MB
+      number /= ONE_K;
+      len = xSnprintf(buffer, sizeof(buffer), "%4lluM ", number);
+      RichString_appendn(str, processMegabytesColor, buffer, len);
+   } else if (number < 10000 * ONE_K) {
+      //1 digit GB, 3 digit MB
+      number /= ONE_K;
+      len = xSnprintf(buffer, sizeof(buffer), "%1llu", number/1000);
+      RichString_appendn(str, processGigabytesColor, buffer, len);
+      number %= 1000;
+      len = xSnprintf(buffer, sizeof(buffer), "%03lluM ", number);
+      RichString_appendn(str, processMegabytesColor, buffer, len);
+   } else if (number < 100000 * ONE_K) {
+      //2 digit GB, 1 digit MB
+      number /= 100 * ONE_K;
+      len = xSnprintf(buffer, sizeof(buffer), "%2llu", number/10);
+      RichString_appendn(str, processGigabytesColor, buffer, len);
+      number %= 10;
+      len = xSnprintf(buffer, sizeof(buffer), ".%1llu", number);
+      RichString_appendn(str, processMegabytesColor, buffer, len);
+      RichString_append(str, processGigabytesColor, "G ");
+   } else if (number < 1000 * ONE_M) {
+      //3 digit GB
+      number /= ONE_M;
+      len = xSnprintf(buffer, sizeof(buffer), "%4lluG ", number);
+      RichString_appendn(str, processGigabytesColor, buffer, len);
+   } else if (number < 10000ULL * ONE_M) {
+      //1 digit TB, 3 digit GB
+      number /= ONE_M;
+      len = xSnprintf(buffer, sizeof(buffer), "%1llu", number/1000);
+      RichString_appendn(str, largeNumberColor, buffer, len);
+      number %= 1000;
+      len = xSnprintf(buffer, sizeof(buffer), "%03lluG ", number);
+      RichString_appendn(str, processGigabytesColor, buffer, len);
+   } else {
+      //2 digit TB and above
+      len = xSnprintf(buffer, sizeof(buffer), "%4.1lfT ", (double)number/ONE_G);
+      RichString_appendn(str, largeNumberColor, buffer, len);
+   }
+}
+
+void Process_colorNumber(RichString* str, unsigned long long number, bool coloring) {
+   char buffer[13];
+
+   int largeNumberColor = CRT_colors[LARGE_NUMBER];
+   int processMegabytesColor = CRT_colors[PROCESS_MEGABYTES];
+   int processColor = CRT_colors[PROCESS];
+   int processShadowColor = CRT_colors[PROCESS_SHADOW];
+
+   if (!coloring) {
+      largeNumberColor = CRT_colors[PROCESS];
+      processMegabytesColor = CRT_colors[PROCESS];
+      processShadowColor = CRT_colors[PROCESS];
+   }
+
+   if (number == ULLONG_MAX) {
+      int len = xSnprintf(buffer, sizeof(buffer), "        N/A ");
+      RichString_appendn(str, CRT_colors[PROCESS_SHADOW], buffer, len);
+   } else if (number >= 100000LL * ONE_DECIMAL_T) {
+      xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_G);
+      RichString_appendn(str, largeNumberColor, buffer, 12);
+   } else if (number >= 100LL * ONE_DECIMAL_T) {
+      xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_M);
+      RichString_appendn(str, largeNumberColor, buffer, 8);
+      RichString_appendn(str, processMegabytesColor, buffer+8, 4);
+   } else if (number >= 10LL * ONE_DECIMAL_G) {
+      xSnprintf(buffer, sizeof(buffer), "%11llu ", number / ONE_DECIMAL_K);
+      RichString_appendn(str, largeNumberColor, buffer, 5);
+      RichString_appendn(str, processMegabytesColor, buffer+5, 3);
+      RichString_appendn(str, processColor, buffer+8, 4);
+   } else {
+      xSnprintf(buffer, sizeof(buffer), "%11llu ", number);
+      RichString_appendn(str, largeNumberColor, buffer, 2);
+      RichString_appendn(str, processMegabytesColor, buffer+2, 3);
+      RichString_appendn(str, processColor, buffer+5, 3);
+      RichString_appendn(str, processShadowColor, buffer+8, 4);
+   }
+}
+
+void Process_printTime(RichString* str, unsigned long long totalHundredths) {
+   unsigned long long totalSeconds = totalHundredths / 100;
+
+   unsigned long long hours = totalSeconds / 3600;
+   int minutes = (totalSeconds / 60) % 60;
+   int seconds = totalSeconds % 60;
+   int hundredths = totalHundredths - (totalSeconds * 100);
+   char buffer[10];
+   if (hours >= 100) {
+      xSnprintf(buffer, sizeof(buffer), "%7lluh ", hours);
+      RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
+   } else {
+      if (hours) {
+         xSnprintf(buffer, sizeof(buffer), "%2lluh", hours);
+         RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
+         xSnprintf(buffer, sizeof(buffer), "%02d:%02d ", minutes, seconds);
+      } else {
+         xSnprintf(buffer, sizeof(buffer), "%2d:%02d.%02d ", minutes, seconds, hundredths);
+      }
+      RichString_append(str, CRT_colors[DEFAULT_COLOR], buffer);
+   }
+}
+
+void Process_fillStarttimeBuffer(Process* this) {
+   struct tm date;
+   (void) localtime_r(&this->starttime_ctime, &date);
+   strftime(this->starttime_show, sizeof(this->starttime_show) - 1, (this->starttime_ctime > (time(NULL) - 86400)) ? "%R " : "%b%d ", &date);
+}
+
+static inline void Process_writeCommand(const Process* this, int attr, int baseattr, RichString* str) {
+   int start = RichString_size(str), finish = 0;
+   const char* comm = this->comm;
+
+   if (this->settings->highlightBaseName || !this->settings->showProgramPath) {
+      int i, basename = 0;
+      for (i = 0; i < this->basenameOffset; i++) {
+         if (comm[i] == '/') {
+            basename = i + 1;
+         } else if (comm[i] == ':') {
+            finish = i + 1;
+            break;
+         }
+      }
+      if (!finish) {
+         if (this->settings->showProgramPath) {
+            start += basename;
+         } else {
+            comm += basename;
+         }
+         finish = this->basenameOffset - basename;
+      }
+      finish += start - 1;
+   }
+
+   RichString_append(str, attr, comm);
+
+   if (this->settings->highlightBaseName) {
+      RichString_setAttrn(str, baseattr, start, finish);
+   }
+}
+
+void Process_outputRate(RichString* str, char* buffer, size_t n, double rate, int coloring) {
+   int largeNumberColor = CRT_colors[LARGE_NUMBER];
+   int processMegabytesColor = CRT_colors[PROCESS_MEGABYTES];
+   int processColor = CRT_colors[PROCESS];
+
+   if (!coloring) {
+      largeNumberColor = CRT_colors[PROCESS];
+      processMegabytesColor = CRT_colors[PROCESS];
+   }
+
+   if (isnan(rate)) {
+      int len = xSnprintf(buffer, n, "        N/A ");
+      RichString_appendn(str, CRT_colors[PROCESS_SHADOW], buffer, len);
+   } else if (rate < ONE_K) {
+      int len = snprintf(buffer, n, "%7.2f B/s ", rate);
+      RichString_appendn(str, processColor, buffer, len);
+   } else if (rate < ONE_M) {
+      int len = snprintf(buffer, n, "%7.2f K/s ", rate / ONE_K);
+      RichString_appendn(str, processColor, buffer, len);
+   } else if (rate < ONE_G) {
+      int len = snprintf(buffer, n, "%7.2f M/s ", rate / ONE_M);
+      RichString_appendn(str, processMegabytesColor, buffer, len);
+   } else if (rate < ONE_T) {
+      int len = snprintf(buffer, n, "%7.2f G/s ", rate / ONE_G);
+      RichString_appendn(str, largeNumberColor, buffer, len);
+   } else {
+      int len = snprintf(buffer, n, "%7.2f T/s ", rate / ONE_T);
+      RichString_appendn(str, largeNumberColor, buffer, len);
+   }
+}
+
+void Process_writeField(const Process* this, RichString* str, ProcessField field) {
+   char buffer[256]; buffer[255] = '\0';
+   int attr = CRT_colors[DEFAULT_COLOR];
+   int baseattr = CRT_colors[PROCESS_BASENAME];
+   size_t n = sizeof(buffer) - 1;
+   bool coloring = this->settings->highlightMegabytes;
+
+   switch (field) {
+   case PERCENT_CPU:
+   case PERCENT_NORM_CPU: {
+      float cpuPercentage = this->percent_cpu;
+      if (field == PERCENT_NORM_CPU) {
+         cpuPercentage /= this->processList->cpuCount;
+      }
+      if (cpuPercentage > 999.9) {
+         xSnprintf(buffer, n, "%4u ", (unsigned int)cpuPercentage);
+      } else if (cpuPercentage > 99.9) {
+         xSnprintf(buffer, n, "%3u. ", (unsigned int)cpuPercentage);
+      } else {
+         xSnprintf(buffer, n, "%4.1f ", cpuPercentage);
+      }
+      break;
+   }
+   case PERCENT_MEM: {
+      if (this->percent_mem > 99.9) {
+         xSnprintf(buffer, n, "100. ");
+      } else {
+         xSnprintf(buffer, n, "%4.1f ", this->percent_mem);
+      }
+      break;
+   }
+   case COMM: {
+      if (this->settings->highlightThreads && Process_isThread(this)) {
+         attr = CRT_colors[PROCESS_THREAD];
+         baseattr = CRT_colors[PROCESS_THREAD_BASENAME];
+      }
+      if (!this->settings->treeView || this->indent == 0) {
+         Process_writeCommand(this, attr, baseattr, str);
+         return;
+      } else {
+         char* buf = buffer;
+         int maxIndent = 0;
+         bool lastItem = (this->indent < 0);
+         int indent = (this->indent < 0 ? -this->indent : this->indent);
+
+         for (int i = 0; i < 32; i++) {
+            if (indent & (1U << i)) {
+               maxIndent = i+1;
+            }
+         }
+
+         for (int i = 0; i < maxIndent - 1; i++) {
+            int written, ret;
+            if (indent & (1 << i)) {
+               ret = snprintf(buf, n, "%s  ", CRT_treeStr[TREE_STR_VERT]);
+            } else {
+               ret = snprintf(buf, n, "   ");
+            }
+            if (ret < 0 || (size_t)ret >= n) {
+               written = n;
+            } else {
+               written = ret;
+            }
+            buf += written;
+            n -= written;
+         }
+         const char* draw = CRT_treeStr[lastItem ? (this->settings->direction == 1 ? TREE_STR_BEND : TREE_STR_TEND) : TREE_STR_RTEE];
+         xSnprintf(buf, n, "%s%s ", draw, this->showChildren ? CRT_treeStr[TREE_STR_SHUT] : CRT_treeStr[TREE_STR_OPEN] );
+         RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
+         Process_writeCommand(this, attr, baseattr, str);
+         return;
+      }
+   }
+   case MAJFLT: Process_colorNumber(str, this->majflt, coloring); return;
+   case MINFLT: Process_colorNumber(str, this->minflt, coloring); return;
+   case M_RESIDENT: Process_humanNumber(str, this->m_resident * CRT_pageSizeKB, coloring); return;
+   case M_VIRT: Process_humanNumber(str, this->m_virt * CRT_pageSizeKB, coloring); return;
+   case NICE: {
+      xSnprintf(buffer, n, "%3ld ", this->nice);
+      attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
+           : this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
+           : attr;
+      break;
+   }
+   case NLWP: xSnprintf(buffer, n, "%4ld ", this->nlwp); break;
+   case PGRP: xSnprintf(buffer, n, Process_pidFormat, this->pgrp); break;
+   case PID: xSnprintf(buffer, n, Process_pidFormat, this->pid); break;
+   case PPID: xSnprintf(buffer, n, Process_pidFormat, this->ppid); break;
+   case PRIORITY: {
+      if(this->priority <= -100)
+         xSnprintf(buffer, n, " RT ");
+      else
+         xSnprintf(buffer, n, "%3ld ", this->priority);
+      break;
+   }
+   case PROCESSOR: xSnprintf(buffer, n, "%3d ", Settings_cpuId(this->settings, this->processor)); break;
+   case SESSION: xSnprintf(buffer, n, Process_pidFormat, this->session); break;
+   case STARTTIME: xSnprintf(buffer, n, "%s", this->starttime_show); break;
+   case STATE: {
+      xSnprintf(buffer, n, "%c ", this->state);
+      switch(this->state) {
+          case 'R':
+              attr = CRT_colors[PROCESS_R_STATE];
+              break;
+          case 'D':
+              attr = CRT_colors[PROCESS_D_STATE];
+              break;
+      }
+      break;
+   }
+   case ST_UID: xSnprintf(buffer, n, "%5d ", this->st_uid); break;
+   case TIME: Process_printTime(str, this->time); return;
+   case TGID: xSnprintf(buffer, n, Process_pidFormat, this->tgid); break;
+   case TPGID: xSnprintf(buffer, n, Process_pidFormat, this->tpgid); break;
+   case TTY_NR: xSnprintf(buffer, n, "%3u:%3u ", major(this->tty_nr), minor(this->tty_nr)); break;
+   case USER: {
+      if (Process_getuid != this->st_uid)
+         attr = CRT_colors[PROCESS_SHADOW];
+      if (this->user) {
+         xSnprintf(buffer, n, "%-9s ", this->user);
+      } else {
+         xSnprintf(buffer, n, "%-9d ", this->st_uid);
+      }
+      if (buffer[9] != '\0') {
+         buffer[9] = ' ';
+         buffer[10] = '\0';
+      }
+      break;
+   }
+   default:
+      xSnprintf(buffer, n, "- ");
+   }
+   RichString_append(str, attr, buffer);
+}
+
+void Process_display(const Object* cast, RichString* out) {
+   const Process* this = (const Process*) cast;
+   const ProcessField* fields = this->settings->fields;
+   RichString_prune(out);
+   for (int i = 0; fields[i]; i++)
+      As_Process(this)->writeField(this, out, fields[i]);
+
+   if (this->settings->shadowOtherUsers && this->st_uid != Process_getuid) {
+      RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]);
+   }
+
+   if (this->tag == true) {
+      RichString_setAttr(out, CRT_colors[PROCESS_TAG]);
+   }
+
+   if (this->settings->highlightChanges) {
+      if (Process_isTomb(this)) {
+         out->highlightAttr = CRT_colors[PROCESS_TOMB];
+      } else if (Process_isNew(this)) {
+         out->highlightAttr = CRT_colors[PROCESS_NEW];
+      }
+   }
+
+   assert(out->chlen > 0);
+}
+
+void Process_done(Process* this) {
+   assert (this != NULL);
+   free(this->comm);
+}
+
+static const char* Process_getCommandStr(const Process* p) {
+   return p->comm ? p->comm : "";
+}
+
+const ProcessClass Process_class = {
+   .super = {
+      .extends = Class(Object),
+      .display = Process_display,
+      .delete = Process_delete,
+      .compare = Process_compare
+   },
+   .writeField = Process_writeField,
+   .getCommandStr = Process_getCommandStr,
 };
 
-static int Process_getuid = -1;
-
-Process* Process_new(struct ProcessList_ *pl) {
-   Process* this = malloc(sizeof(Process));
-   Object_setClass(this, PROCESS_CLASS);
-   ((Object*)this)->display = Process_display;
-   ((Object*)this)->delete = Process_delete;
-   this->pl = pl;
+void Process_init(Process* this, const struct Settings_* settings) {
+   this->settings = settings;
    this->tag = false;
+   this->showChildren = true;
+   this->show = true;
    this->updated = false;
-   this->utime = 0;
-   this->stime = 0;
-   this->comm = NULL;
-   if (Process_getuid == -1) Process_getuid = getuid();
-   return this;
-}
+   this->basenameOffset = -1;
 
-Process* Process_clone(Process* this) {
-   Process* clone = malloc(sizeof(Process));
-   memcpy(clone, this, sizeof(Process));
-   return clone;
+   if (Process_getuid == (uid_t)-1) {
+      Process_getuid = getuid();
    }
-
-void Process_delete(Object* cast) {
-   Process* this = (Process*) cast;
-   if (this->comm) free(this->comm);
-   assert (this != NULL);
-   free(this);
-}
-
-void Process_display(Object* cast, RichString* out) {
-   Process* this = (Process*) cast;
-   ProcessField* fields = this->pl->fields;
-   RichString_init(out);
-   for (int i = 0; fields[i]; i++)
-      Process_writeField(this, out, fields[i]);
-   if (this->pl->shadowOtherUsers && this->st_uid != Process_getuid)
-      RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]);
-   if (this->tag == true)
-      RichString_setAttr(out, CRT_colors[PROCESS_TAG]);
-   assert(out->len > 0);
 }
 
 void Process_toggleTag(Process* this) {
    this->tag = this->tag == true ? false : true;
 }
 
-void Process_setPriority(Process* this, int priority) {
+bool Process_isNew(const Process* this) {
+   assert(this->processList);
+   if (this->processList->scanTs >= this->seenTs) {
+      return this->processList->scanTs - this->seenTs <= this->processList->settings->highlightDelaySecs;
+   }
+   return false;
+}
+
+bool Process_isTomb(const Process* this) {
+    return this->tombTs > 0;
+}
+
+bool Process_setPriority(Process* this, int priority) {
+   CRT_dropPrivileges();
    int old_prio = getpriority(PRIO_PROCESS, this->pid);
    int err = setpriority(PRIO_PROCESS, this->pid, priority);
+   CRT_restorePrivileges();
    if (err == 0 && old_prio != getpriority(PRIO_PROCESS, this->pid)) {
       this->nice = priority;
    }
+   return (err == 0);
 }
 
-void Process_sendSignal(Process* this, int signal) {
-   kill(this->pid, signal);
+bool Process_changePriorityBy(Process* this, Arg delta) {
+   return Process_setPriority(this, this->nice + delta.i);
 }
 
-#define ONE_K 1024
-#define ONE_M (ONE_K * ONE_K)
-#define ONE_G (ONE_M * ONE_K)
-
-static void Process_printLargeNumber(Process* this, RichString *str, unsigned int number) {
-   char buffer[11];
-   int len;
-   if(number >= (1000 * ONE_M)) {
-      len = snprintf(buffer, 10, "%4.2fG ", (float)number / ONE_M);
-      RichString_appendn(str, CRT_colors[LARGE_NUMBER], buffer, len);
-   } else if(number >= (100000)) {
-      len = snprintf(buffer, 10, "%4dM ", number / ONE_K);
-      int attr = this->pl->highlightMegabytes
-               ? CRT_colors[PROCESS_MEGABYTES]
-               : CRT_colors[PROCESS];
-      RichString_appendn(str, attr, buffer, len);
-   } else if (this->pl->highlightMegabytes && number >= 1000) {
-      len = snprintf(buffer, 10, "%2d", number/1000);
-      RichString_appendn(str, CRT_colors[PROCESS_MEGABYTES], buffer, len);
-      number %= 1000;
-      len = snprintf(buffer, 10, "%03d ", number);
-      RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
-   } else {
-      len = snprintf(buffer, 10, "%5d ", number);
-      RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
-   }
+bool Process_sendSignal(Process* this, Arg sgn) {
+   CRT_dropPrivileges();
+   bool ok = (kill(this->pid, sgn.i) == 0);
+   CRT_restorePrivileges();
+   return ok;
 }
 
-static double jiffy = 0.0;
-
-static void Process_printTime(RichString* str, unsigned long t) {
-   if(jiffy == 0.0) jiffy = sysconf(_SC_CLK_TCK);
-   double jiffytime = 1.0 / jiffy;
-
-   double realTime = t * jiffytime;
-   int iRealTime = (int) realTime;
-
-   int hours = iRealTime / 3600;
-   int minutes = (iRealTime / 60) % 60;
-   int seconds = iRealTime % 60;
-   int hundredths = (realTime - iRealTime) * 100;
-   char buffer[11];
-   if (hours) {
-      snprintf(buffer, 10, "%2dh", hours);
-      RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
-      snprintf(buffer, 10, "%02d:%02d ", minutes, seconds);
-   } else {
-      snprintf(buffer, 10, "%2d:%02d.%02d ", minutes, seconds, hundredths);
-   }
-   RichString_append(str, CRT_colors[DEFAULT_COLOR], buffer);
-}
-
-static inline void Process_writeCommand(Process* this, int attr, RichString* str) {
-   if (this->pl->highlightBaseName) {
-      char* firstSpace = strchr(this->comm, ' ');
-      if (firstSpace) {
-         char* slash = firstSpace;
-         while (slash > this->comm && *slash != '/')
-            slash--;
-         if (slash > this->comm) {
-            slash++;
-            RichString_appendn(str, attr, this->comm, slash - this->comm);
-         }
-         RichString_appendn(str, CRT_colors[PROCESS_BASENAME], slash, firstSpace - slash);
-         RichString_append(str, attr, firstSpace);
-      } else {
-         RichString_append(str, CRT_colors[PROCESS_BASENAME], this->comm);
-      }
-   } else {
-      RichString_append(str, attr, this->comm);
-   }
-}
-
-void Process_writeField(Process* this, RichString* str, ProcessField field) {
-   char buffer[PROCESS_COMM_LEN];
-   int attr = CRT_colors[DEFAULT_COLOR];
-   int n = PROCESS_COMM_LEN;
-
-   switch (field) {
-   case PID: snprintf(buffer, n, "%5d ", this->pid); break;
-   case PPID: snprintf(buffer, n, "%5d ", this->ppid); break;
-   case PGRP: snprintf(buffer, n, "%5d ", this->pgrp); break;
-   case SESSION: snprintf(buffer, n, "%5d ", this->session); break;
-   case TTY_NR: snprintf(buffer, n, "%5d ", this->tty_nr); break;
-   case TPGID: snprintf(buffer, n, "%5d ", this->tpgid); break;
-   case PROCESSOR: snprintf(buffer, n, "%3d ", this->processor+1); break;
-   case COMM: {
-      if (!this->pl->treeView || this->indent == 0) {
-         Process_writeCommand(this, attr, str);
-         return;
-      } else {
-         char* buf = buffer;
-         int maxIndent = 0;
-         for (int i = 0; i < 32; i++)
-            if (this->indent & (1 << i))
-               maxIndent = i+1;
-          for (int i = 0; i < maxIndent - 1; i++) {
-            if (this->indent & (1 << i))
-               snprintf(buf, n, " |  ");
-            else
-               snprintf(buf, n, "    ");
-            buf += 4;
-            n -= 4;
-         }
-         if (this->pl->direction == 1)
-            snprintf(buf, n, " `- ");
-         else
-            snprintf(buf, n, " ,- ");
-         RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
-         Process_writeCommand(this, attr, str);
-         return;
-      }
-   }
-   case STATE: {
-      snprintf(buffer, n, "%c ", this->state);
-      attr = this->state == 'R'
-           ? CRT_colors[PROCESS_R_STATE]
-           : attr;
-      break;
-   }
-   case PRIORITY: {
-      if(this->priority == -100)
-         snprintf(buffer, n, " RT ");
-      else
-         snprintf(buffer, n, "%3ld ", this->priority);
-      break;
-   }
-   case NICE: {
-      snprintf(buffer, n, "%3ld ", this->nice);
-      attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
-           : this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
-           : attr;
-      break;
-   }
-   case M_SIZE: Process_printLargeNumber(this, str, this->m_size * PAGE_SIZE); return;
-   case M_RESIDENT: Process_printLargeNumber(this, str, this->m_resident * PAGE_SIZE); return;
-   case M_SHARE: Process_printLargeNumber(this, str, this->m_share * PAGE_SIZE); return;
-   case ST_UID: snprintf(buffer, n, "%4d ", this->st_uid); break;
-   case USER: {
-      if (Process_getuid != this->st_uid)
-         attr = CRT_colors[PROCESS_SHADOW];
-      if (this->user) {
-      snprintf(buffer, n, "%-8s ", this->user);
-      } else {
-      snprintf(buffer, n, "%-8d ", this->st_uid);
-      }
-      if (buffer[8] != '\0') {
-         buffer[8] = ' ';
-         buffer[9] = '\0';
-      }
-      break;
-   }
-   case UTIME: Process_printTime(str, this->utime); return;
-   case STIME: Process_printTime(str, this->stime); return;
-   case CUTIME: Process_printTime(str, this->cutime); return;
-   case CSTIME: Process_printTime(str, this->cstime); return;
-   case TIME: Process_printTime(str, this->utime + this->stime); return;
-   case PERCENT_CPU: {
-      if (this->percent_cpu > 99.9) {
-         snprintf(buffer, n, "100. "); 
-      } else {
-         snprintf(buffer, n, "%4.1f ", this->percent_cpu);
-      }
-      break;
-   }
-   case PERCENT_MEM: {
-      if (this->percent_mem > 99.9) {
-         snprintf(buffer, n, "100. "); 
-      } else {
-         snprintf(buffer, n, "%4.1f ", this->percent_mem);
-      }
-      break;
-   }
-   default:
-      snprintf(buffer, n, "- ");
-   }
-   RichString_append(str, attr, buffer);
-   return;
-}
-
-int Process_pidCompare(const void* v1, const void* v2) {
-   Process* p1 = (Process*)v1;
-   Process* p2 = (Process*)v2;
+long Process_pidCompare(const void* v1, const void* v2) {
+   const Process* p1 = (const Process*)v1;
+   const Process* p2 = (const Process*)v2;
    return (p1->pid - p2->pid);
 }
 
-int Process_compare(const void* v1, const void* v2) {
-   Process *p1, *p2;
-   ProcessList *pl = ((Process*)v1)->pl;
-   if (pl->direction == 1) {
-      p1 = (Process*)v1;
-      p2 = (Process*)v2;
+long Process_compare(const void* v1, const void* v2) {
+   const Process *p1, *p2;
+   const Settings *settings = ((const Process*)v1)->settings;
+   int r;
+
+   if (settings->direction == 1) {
+      p1 = (const Process*)v1;
+      p2 = (const Process*)v2;
    } else {
-      p2 = (Process*)v1;
-      p1 = (Process*)v2;
+      p2 = (const Process*)v1;
+      p1 = (const Process*)v2;
    }
-   switch (pl->sortKey) {
-   case PID:
-      return (p1->pid - p2->pid);
-   case PPID:
-      return (p1->ppid - p2->ppid);
-   case USER:
-      return strcmp(p1->user, p2->user);
-   case PRIORITY:
-      return (p1->priority - p2->priority);
-   case STATE:
-      return (p1->state - p2->state);
-   case NICE:
-      return (p1->nice - p2->nice);
-   case M_SIZE:
-      return (p2->m_size - p1->m_size);
-   case M_RESIDENT:
-      return (p2->m_resident - p1->m_resident);
-   case M_SHARE:
-      return (p2->m_share - p1->m_share);
+
+   switch (settings->sortKey) {
    case PERCENT_CPU:
-      return (p2->percent_cpu > p1->percent_cpu ? 1 : -1);
+   case PERCENT_NORM_CPU:
+      return SPACESHIP_NUMBER(p2->percent_cpu, p1->percent_cpu);
    case PERCENT_MEM:
-      return (p2->m_resident - p1->m_resident);
-   case UTIME:
-      return (p2->utime - p1->utime);
-   case STIME:
-      return (p2->stime - p1->stime);
-   case TIME:
-      return ((p2->utime+p2->stime) - (p1->utime+p1->stime));
+      return SPACESHIP_NUMBER(p2->m_resident, p1->m_resident);
    case COMM:
-      return strcmp(p1->comm, p2->comm);
+      return SPACESHIP_NULLSTR(Process_getCommand(p1), Process_getCommand(p2));
+   case MAJFLT:
+      return SPACESHIP_NUMBER(p2->majflt, p1->majflt);
+   case MINFLT:
+      return SPACESHIP_NUMBER(p2->minflt, p1->minflt);
+   case M_RESIDENT:
+      return SPACESHIP_NUMBER(p2->m_resident, p1->m_resident);
+   case M_VIRT:
+      return SPACESHIP_NUMBER(p2->m_virt, p1->m_virt);
+   case NICE:
+      return SPACESHIP_NUMBER(p1->nice, p2->nice);
+   case NLWP:
+      return SPACESHIP_NUMBER(p1->nlwp, p2->nlwp);
+   case PGRP:
+      return SPACESHIP_NUMBER(p1->pgrp, p2->pgrp);
+   case PID:
+      return SPACESHIP_NUMBER(p1->pid, p2->pid);
+   case PPID:
+      return SPACESHIP_NUMBER(p1->ppid, p2->ppid);
+   case PRIORITY:
+      return SPACESHIP_NUMBER(p1->priority, p2->priority);
+   case PROCESSOR:
+      return SPACESHIP_NUMBER(p1->processor, p2->processor);
+   case SESSION:
+      return SPACESHIP_NUMBER(p1->session, p2->session);
+   case STARTTIME:
+      r = SPACESHIP_NUMBER(p1->starttime_ctime, p2->starttime_ctime);
+      return r != 0 ? r : SPACESHIP_NUMBER(p1->pid, p2->pid);
+   case STATE:
+      return SPACESHIP_NUMBER(Process_sortState(p1->state), Process_sortState(p2->state));
+   case ST_UID:
+      return SPACESHIP_NUMBER(p1->st_uid, p2->st_uid);
+   case TIME:
+      return SPACESHIP_NUMBER(p2->time, p1->time);
+   case TGID:
+      return SPACESHIP_NUMBER(p1->tgid, p2->tgid);
+   case TPGID:
+      return SPACESHIP_NUMBER(p1->tpgid, p2->tpgid);
+   case TTY_NR:
+      return SPACESHIP_NUMBER(p1->tty_nr, p2->tty_nr);
+   case USER:
+      return SPACESHIP_NULLSTR(p1->user, p2->user);
    default:
-      return (p1->pid - p2->pid);
-   }
-
-}
-
-char* Process_printField(ProcessField field) {
-   switch (field) {
-   case PID: return "  PID ";
-   case PPID: return " PPID ";
-   case PGRP: return " PGRP ";
-   case SESSION: return " SESN ";
-   case TTY_NR: return "  TTY ";
-   case TPGID: return " TGID ";
-   case COMM: return "Command ";
-   case STATE: return "S ";
-   case PRIORITY: return "PRI ";
-   case NICE: return " NI ";
-   case M_SIZE: return " VIRT ";
-   case M_RESIDENT: return "  RES ";
-   case M_SHARE: return "  SHR ";
-   case ST_UID: return " UID ";
-   case USER: return "USER     ";
-   case UTIME: return " UTIME+  ";
-   case STIME: return " STIME+  ";
-   case TIME: return "  TIME+  ";
-   case PERCENT_CPU: return "CPU% ";
-   case PERCENT_MEM: return "MEM% ";
-   case PROCESSOR: return "CPU ";
-   default: return "- ";
+      return SPACESHIP_NUMBER(p1->pid, p2->pid);
    }
 }

Process.h

@@ -1,147 +1,203 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_Process
 #define HEADER_Process
 /*
 htop - Process.h
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+(C) 2004-2015 Hisham H. Muhammad
+(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.
 */
 
-#define _GNU_SOURCE
-#include "ProcessList.h"
-#include "Object.h"
-#include "CRT.h"
-#include "String.h"
-
-#include "debug.h"
-
-#include <stdio.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <signal.h>
-#include <string.h>
 #include <stdbool.h>
-#include <pwd.h>
+#include <stdint.h>
+#include <sys/types.h>
 
-// This works only with glibc 2.1+. On earlier versions
-// the behavior is similar to have a hardcoded page size.
-#define PAGE_SIZE ( sysconf(_SC_PAGESIZE) / 1024 )
+#include "Object.h"
+#include "RichString.h"
 
-#define PROCESS_COMM_LEN 300
+#ifdef __ANDROID__
+#define SYS_ioprio_get __NR_ioprio_get
+#define SYS_ioprio_set __NR_ioprio_set
+#endif
 
+#define PROCESS_FLAG_IO 0x0001
+#define DEFAULT_HIGHLIGHT_SECS 5
 
-typedef enum ProcessField_ {
-   PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
-   STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
-   STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
-   PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
-   USER, TIME, LAST_PROCESSFIELD
+typedef enum ProcessFields {
+   NULL_PROCESSFIELD = 0,
+   PID = 1,
+   COMM = 2,
+   STATE = 3,
+   PPID = 4,
+   PGRP = 5,
+   SESSION = 6,
+   TTY_NR = 7,
+   TPGID = 8,
+   MINFLT = 10,
+   MAJFLT = 12,
+   PRIORITY = 18,
+   NICE = 19,
+   STARTTIME = 21,
+   PROCESSOR = 38,
+   M_VIRT = 39,
+   M_RESIDENT = 40,
+   ST_UID = 46,
+   PERCENT_CPU = 47,
+   PERCENT_MEM = 48,
+   USER = 49,
+   TIME = 50,
+   NLWP = 51,
+   TGID = 52,
+   PERCENT_NORM_CPU = 53,
 } ProcessField;
 
-struct ProcessList_;
+typedef struct ProcessPidColumn_ {
+   int id;
+   const char* label;
+} ProcessPidColumn;
+
+struct Settings_;
 
 typedef struct Process_ {
    Object super;
 
-   struct ProcessList_ *pl;
+   const struct ProcessList_* processList;
+   const struct Settings_* settings;
+
+   unsigned long long int time;
+   pid_t pid;
+   pid_t ppid;
+   pid_t tgid;
+   char* comm;  /* use Process_getCommand() for Command actually displayed */
+   int commLen;
+   int indent;
+
+   int basenameOffset;
    bool updated;
 
-   int pid;
-   char* comm;
-   int indent;
    char state;
    bool tag;
-   int ppid;
-   int pgrp;
-   int session;
-   int tty_nr;
+   bool showChildren;
+   bool show;
+   bool wasShown;
+   unsigned int pgrp;
+   unsigned int session;
+   unsigned int tty_nr;
    int tpgid;
-   unsigned long int flags;
-   #ifdef DEBUG
-   unsigned long int minflt;
-   unsigned long int cminflt;
-   unsigned long int majflt;
-   unsigned long int cmajflt;
-   #endif
-   unsigned long int utime;
-   unsigned long int stime;
-   long int cutime;
-   long int cstime;
-   long int priority;
-   long int nice;
-   #ifdef DEBUG
-   long int itrealvalue;
-   unsigned long int starttime;
-   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
-   int exit_signal;
-   int processor;
-   int m_size;
-   int m_resident;
-   int m_share;
-   int m_trs;
-   int m_drs;
-   int m_lrs;
-   int m_dt;
    uid_t st_uid;
+   unsigned long int flags;
+   int processor;
+
    float percent_cpu;
    float percent_mem;
-   char* user;
+   const char* user;
+
+   long int priority;
+   long int nice;
+   long int nlwp;
+   char starttime_show[8];
+   time_t starttime_ctime;
+
+   long m_virt;
+   long m_resident;
+
+   int exit_signal;
+
+   time_t seenTs;
+   time_t tombTs;
+
+   unsigned long int minflt;
+   unsigned long int majflt;
+
+   unsigned int tree_left;
+   unsigned int tree_right;
+   unsigned int tree_depth;
+   unsigned int tree_index;
 } Process;
 
+typedef struct ProcessFieldData_ {
+   const char* name;
+   const char* title;
+   const char* description;
+   uint32_t flags;
+} ProcessFieldData;
 
-#ifdef DEBUG
-extern char* PROCESS_CLASS;
-#else
-#define PROCESS_CLASS NULL
-#endif
-
-extern char *Process_fieldNames[];
-
-Process* Process_new(struct ProcessList_ *pl);
-
-Process* Process_clone(Process* this);
-
+// Implemented in platform-specific code:
+void Process_writeField(const Process* this, RichString* str, ProcessField field);
+long Process_compare(const void* v1, const void* v2);
 void Process_delete(Object* cast);
+bool Process_isThread(const Process* this);
+extern ProcessFieldData Process_fields[];
+extern ProcessPidColumn Process_pidColumns[];
+extern char Process_pidFormat[20];
 
-void Process_display(Object* cast, RichString* out);
+typedef Process*(*Process_New)(const struct Settings_*);
+typedef void (*Process_WriteField)(const Process*, RichString*, ProcessField);
+typedef const char* (*Process_GetCommandStr)(const Process*);
+
+typedef struct ProcessClass_ {
+   const ObjectClass super;
+   const Process_WriteField writeField;
+   const Process_GetCommandStr getCommandStr;
+} ProcessClass;
+
+#define As_Process(this_)              ((const ProcessClass*)((this_)->super.klass))
+
+#define Process_getCommand(this_)      (As_Process(this_)->getCommandStr ? As_Process(this_)->getCommandStr((const Process*)(this_)) : ((const Process*)(this_))->comm)
+
+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 Process_sortState(state) ((state) == 'I' ? 0x100 : (state))
+
+
+#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_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)
+
+void Process_setupColumnWidths(void);
+
+void Process_humanNumber(RichString* str, unsigned long long number, bool coloring);
+
+void Process_colorNumber(RichString* str, unsigned long long number, bool coloring);
+
+void Process_printTime(RichString* str, unsigned long long totalHundredths);
+
+void Process_fillStarttimeBuffer(Process* this);
+
+void Process_outputRate(RichString* str, char* buffer, size_t n, double rate, int coloring);
+
+void Process_display(const Object* cast, RichString* out);
+
+void Process_done(Process* this);
+
+extern const ProcessClass Process_class;
+
+void Process_init(Process* this, const struct Settings_* settings);
 
 void Process_toggleTag(Process* this);
 
-void Process_setPriority(Process* this, int priority);
+bool Process_isNew(const Process* this);
 
-void Process_sendSignal(Process* this, int signal);
+bool Process_isTomb(const Process* this);
 
-#define ONE_K 1024
-#define ONE_M (ONE_K * ONE_K)
-#define ONE_G (ONE_M * ONE_K)
+bool Process_setPriority(Process* this, int priority);
 
-void Process_writeField(Process* this, RichString* str, ProcessField field);
+bool Process_changePriorityBy(Process* this, Arg delta);
 
-int Process_pidCompare(const void* v1, const void* v2);
+bool Process_sendSignal(Process* this, Arg sgn);
 
-int Process_compare(const void* v1, const void* v2);
-
-char* Process_printField(ProcessField field);
+long Process_pidCompare(const void* v1, const void* v2);
 
 #endif

ProcessList.h

@@ -1,50 +1,30 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_ProcessList
 #define HEADER_ProcessList
 /*
 htop - ProcessList.h
 (C) 2004,2005 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.
 */
 
-#ifndef CONFIG_H
-#define CONFIG_H
-#include "config.h"
-#endif
+#include "config.h" // IWYU pragma: keep
 
-#include "Process.h"
-#include "Vector.h"
-#include "UsersTable.h"
-#include "Hashtable.h"
-#include "String.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <signal.h>
 #include <stdbool.h>
-#include <sys/utsname.h>
-#include <stdarg.h>
+#include <sys/types.h>
 
-#include "debug.h"
-#include <assert.h>
+#include "Hashtable.h"
+#include "Object.h"
+#include "Panel.h"
+#include "Process.h"
+#include "RichString.h"
+#include "Settings.h"
+#include "UsersTable.h"
+#include "Vector.h"
 
-#ifndef PROCDIR
-#define PROCDIR "/proc"
+#ifdef HAVE_LIBHWLOC
+#include <hwloc.h>
 #endif
 
-#ifndef PROCSTATFILE
-#define PROCSTATFILE "/proc/stat"
-#endif
-
-#ifndef PROCMEMINFOFILE
-#define PROCMEMINFOFILE "/proc/meminfo"
-#endif
 
 #ifndef MAX_NAME
 #define MAX_NAME 128
@@ -54,116 +34,77 @@ in the source distribution for its full text.
 #define MAX_READ 2048
 #endif
 
-#ifndef PER_PROCESSOR_FIELDS
-#define PER_PROCESSOR_FIELDS 20
-#endif
-
-
-
-#ifdef DEBUG
-typedef int(*vxscanf)(void*, const char*, va_list);
-#endif
-
 typedef struct ProcessList_ {
+   const Settings* settings;
+
    Vector* processes;
    Vector* processes2;
    Hashtable* processTable;
-   Process* prototype;
    UsersTable* usersTable;
 
-   int processorCount;
+   Hashtable* displayTreeSet;
+   Hashtable* draftingTreeSet;
+
+   Panel* panel;
+   int following;
+   uid_t userId;
+   const char* incFilter;
+   Hashtable* pidMatchList;
+
+   #ifdef HAVE_LIBHWLOC
+   hwloc_topology_t topology;
+   bool topologyOk;
+   #endif
+
    int totalTasks;
    int runningTasks;
-
-   // Must match number of PER_PROCESSOR_FIELDS constant
-   unsigned long long int* totalTime;
-   unsigned long long int* userTime;
-   unsigned long long int* systemTime;
-   unsigned long long int* systemAllTime;
-   unsigned long long int* idleTime;
-   unsigned long long int* niceTime;
-   unsigned long long int* ioWaitTime;
-   unsigned long long int* irqTime;
-   unsigned long long int* softIrqTime;
-   unsigned long long int* stealTime;
-   unsigned long long int* totalPeriod;
-   unsigned long long int* userPeriod;
-   unsigned long long int* systemPeriod;
-   unsigned long long int* systemAllPeriod;
-   unsigned long long int* idlePeriod;
-   unsigned long long int* nicePeriod;
-   unsigned long long int* ioWaitPeriod;
-   unsigned long long int* irqPeriod;
-   unsigned long long int* softIrqPeriod;
-   unsigned long long int* stealPeriod;
+   int userlandThreads;
+   int kernelThreads;
 
    unsigned long long int totalMem;
    unsigned long long int usedMem;
-   unsigned long long int freeMem;
-   unsigned long long int sharedMem;
    unsigned long long int buffersMem;
    unsigned long long int cachedMem;
    unsigned long long int totalSwap;
    unsigned long long int usedSwap;
    unsigned long long int freeSwap;
 
-   ProcessField* fields;
-   ProcessField sortKey;
-   int direction;
-   bool hideThreads;
-   bool shadowOtherUsers;
-   bool hideKernelThreads;
-   bool hideUserlandThreads;
-   bool treeView;
-   bool highlightBaseName;
-   bool highlightMegabytes;
-   bool expandSystemTime;
-   #ifdef DEBUG
-   FILE* traceFile;
-   #endif
+   int cpuCount;
 
+   time_t scanTs;
 } ProcessList;
 
-#ifdef DEBUG
-
-#define ProcessList_read(this, buffer, format, ...) ProcessList_xread(this, (vxscanf) vsscanf, buffer, format, ## __VA_ARGS__ )
-#define ProcessList_fread(this, file, format, ...)  ProcessList_xread(this, (vxscanf) vfscanf, file, format, ## __VA_ARGS__ )
-
-#else
-
-#ifndef ProcessList_read
-#define ProcessList_fopen(this, path, mode) fopen(path, mode)
-#define ProcessList_read(this, buffer, format, ...) sscanf(buffer, format, ## __VA_ARGS__ )
-#define ProcessList_fread(this, file, format, ...) fscanf(file, format, ## __VA_ARGS__ )
-#endif
-
-#endif
-
-ProcessList* ProcessList_new(UsersTable* usersTable);
-
-void ProcessList_delete(ProcessList* this);
-
-void ProcessList_invertSortOrder(ProcessList* this);
-
-RichString ProcessList_printHeader(ProcessList* this);
+ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId);
+void ProcessList_delete(ProcessList* pl);
+void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate);
 
 
-void ProcessList_prune(ProcessList* this);
+ProcessList* ProcessList_init(ProcessList* this, const ObjectClass* klass, UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId);
+
+void ProcessList_done(ProcessList* this);
+
+void ProcessList_setPanel(ProcessList* this, Panel* panel);
+
+void ProcessList_printHeader(ProcessList* this, RichString* header);
 
 void ProcessList_add(ProcessList* this, Process* p);
 
 void ProcessList_remove(ProcessList* this, Process* p);
 
-Process* ProcessList_get(ProcessList* this, int index);
+Process* ProcessList_get(ProcessList* this, int idx);
 
 int ProcessList_size(ProcessList* this);
 
 void ProcessList_sort(ProcessList* this);
 
-bool ProcessList_readStatusFile(ProcessList* this, Process* proc, char* dirname, char* name);
+ProcessField ProcessList_keyAt(const ProcessList* this, int at);
 
-void ProcessList_processEntries(ProcessList* this, char* dirname, int parent, float period);
+void ProcessList_expandTree(ProcessList* this);
 
-void ProcessList_scan(ProcessList* this);
+void ProcessList_rebuildPanel(ProcessList* this);
+
+Process* ProcessList_getProcess(ProcessList* this, pid_t pid, bool* preExisting, Process_New constructor);
+
+void ProcessList_scan(ProcessList* this, bool pauseProcessUpdate);
 
 #endif

ProcessLocksScreen.c

@@ -0,0 +1,105 @@
+/*
+htop - ProcessLocksScreen.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 "ProcessLocksScreen.h"
+
+#include <inttypes.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include "Panel.h"
+#include "Platform.h"
+#include "ProvideCurses.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+
+ProcessLocksScreen* ProcessLocksScreen_new(const Process* process) {
+   ProcessLocksScreen* this = xMalloc(sizeof(ProcessLocksScreen));
+   Object_setClass(this, Class(ProcessLocksScreen));
+   if (Process_isThread(process))
+      this->pid = process->tgid;
+   else
+      this->pid = process->pid;
+   return (ProcessLocksScreen*) InfoScreen_init(&this->super, process, NULL, LINES-3, "        ID  TYPE       EXCLUSION  READ/WRITE DEVICE:INODE                              START                  END  FILENAME");
+}
+
+void ProcessLocksScreen_delete(Object* this) {
+   free(InfoScreen_done((InfoScreen*)this));
+}
+
+static void ProcessLocksScreen_draw(InfoScreen* this) {
+   InfoScreen_drawTitled(this, "Snapshot of file locks of process %d - %s", ((ProcessLocksScreen*)this)->pid, Process_getCommand(this->process));
+}
+
+static inline void FileLocks_Data_clear(FileLocks_Data* data) {
+   free(data->locktype);
+   free(data->exclusive);
+   free(data->readwrite);
+   free(data->filename);
+}
+
+static void ProcessLocksScreen_scan(InfoScreen* this) {
+   Panel* panel = this->display;
+   int idx = Panel_getSelectedIndex(panel);
+   Panel_prune(panel);
+   FileLocks_ProcessData* pdata = Platform_getProcessLocks(((ProcessLocksScreen*)this)->pid);
+   if (!pdata) {
+      InfoScreen_addLine(this, "This feature is not supported on your platform.");
+   } else if (pdata->error) {
+      InfoScreen_addLine(this, "Could not determine file locks.");
+   } else {
+      FileLocks_LockData* ldata = pdata->locks;
+      if (!ldata) {
+         InfoScreen_addLine(this, "No locks have been found for the selected process.");
+      }
+      while (ldata) {
+         FileLocks_Data* data = &ldata->data;
+
+         char entry[512];
+         if (ULLONG_MAX == data->end) {
+            xSnprintf(entry, sizeof(entry), "%10d  %-10s %-10s %-10s %02x:%02x:%020"PRIu64" %20"PRIu64" %20s  %s",
+               data->id,
+               data->locktype, data->exclusive, data->readwrite,
+               data->dev[0], data->dev[1], data->inode,
+               data->start, "<END OF FILE>",
+               data->filename ? data->filename : "<N/A>"
+            );
+         } else {
+            xSnprintf(entry, sizeof(entry), "%10d  %-10s %-10s %-10s %02x:%02x:%020"PRIu64" %20"PRIu64" %20"PRIu64"  %s",
+               data->id,
+               data->locktype, data->exclusive, data->readwrite,
+               data->dev[0], data->dev[1], data->inode,
+               data->start, data->end,
+               data->filename ? data->filename : "<N/A>"
+            );
+         }
+
+         InfoScreen_addLine(this, entry);
+         FileLocks_Data_clear(&ldata->data);
+
+         FileLocks_LockData* old = ldata;
+         ldata = ldata->next;
+         free(old);
+      }
+   }
+   free(pdata);
+   Vector_insertionSort(this->lines);
+   Vector_insertionSort(panel->items);
+   Panel_setSelected(panel, idx);
+}
+
+const InfoScreenClass ProcessLocksScreen_class = {
+   .super = {
+      .extends = Class(Object),
+      .delete = ProcessLocksScreen_delete
+   },
+   .scan = ProcessLocksScreen_scan,
+   .draw = ProcessLocksScreen_draw
+};

ProcessLocksScreen.h

@@ -0,0 +1,52 @@
+#ifndef HEADER_ProcessLocksScreen
+#define HEADER_ProcessLocksScreen
+/*
+htop - ProcessLocksScreen.h
+(C) 2020 htop dev team
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "InfoScreen.h"
+#include "Object.h"
+#include "Process.h"
+
+
+typedef struct ProcessLocksScreen_ {
+   InfoScreen super;
+   pid_t pid;
+} ProcessLocksScreen;
+
+typedef struct FileLocks_Data_ {
+   char* locktype;
+   char* exclusive;
+   char* readwrite;
+   char* filename;
+   int id;
+   unsigned int dev[2];
+   uint64_t inode;
+   uint64_t start;
+   uint64_t end;
+} FileLocks_Data;
+
+typedef struct FileLocks_LockData_ {
+   FileLocks_Data data;
+   struct FileLocks_LockData_* next;
+} FileLocks_LockData;
+
+typedef struct FileLocks_ProcessData_ {
+   bool error;
+   struct FileLocks_LockData_* locks;
+} FileLocks_ProcessData;
+
+extern const InfoScreenClass ProcessLocksScreen_class;
+
+ProcessLocksScreen* ProcessLocksScreen_new(const Process* process);
+
+void ProcessLocksScreen_delete(Object* this);
+
+#endif

ProvideCurses.h

@@ -0,0 +1,34 @@
+#ifndef HEADER_ProvideCurses
+#define HEADER_ProvideCurses
+/*
+htop - RichString.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 "config.h"
+
+// IWYU pragma: begin_exports
+
+#ifdef HAVE_NCURSESW_CURSES_H
+#include <ncursesw/curses.h>
+#elif defined(HAVE_NCURSES_NCURSES_H)
+#include <ncurses/ncurses.h>
+#elif defined(HAVE_NCURSES_CURSES_H)
+#include <ncurses/curses.h>
+#elif defined(HAVE_NCURSES_H)
+#include <ncurses.h>
+#elif defined(HAVE_CURSES_H)
+#include <curses.h>
+#endif
+
+#ifdef HAVE_LIBNCURSESW
+#include <wchar.h>
+#include <wctype.h>
+#endif
+
+// IWYU pragma: end_exports
+
+#endif // HEADER_ProvideCurses

README

@@ -1,50 +1,70 @@
+# [![htop](htop.png)](https://htop.dev)
 
-htop
-by Hisham Muhammad <loderunner@users.sourceforge.net>
+[![CI](https://github.com/htop-dev/htop/workflows/CI/badge.svg)](https://github.com/htop-dev/htop/actions)
+[![Coverity Scan Build Status](https://scan.coverity.com/projects/21665/badge.svg)](https://scan.coverity.com/projects/21665)
+[![Mailing List](https://img.shields.io/badge/Mailing%20List-htop-blue.svg)](https://groups.io/g/htop)
+[![IRC #htop](https://img.shields.io/badge/IRC-htop-blue.svg)](https://webchat.freenode.net/#htop)
+[![Github Release](https://img.shields.io/github/release/htop-dev/htop.svg)](https://github.com/htop-dev/htop/releases/latest)
+[![Download](https://api.bintray.com/packages/htop/source/htop/images/download.svg)](https://bintray.com/htop/source/htop/_latestVersion)
 
-May, 2004 - July, 2006
+![Screenshot of htop](docs/images/screenshot.png?raw=true)
 
-Introduction
-~~~~~~~~~~~~
+## Introduction
 
-This is htop, an interactive process viewer.
-It requires ncurses. It is tested with Linux 2.6,
-but is also reported to work (and was originally developed)
-with the 2.4 series.
+`htop` is a cross-platform interactive process viewer.
 
-Note that, while, htop is Linux specific -- it is based
-on the Linux /proc filesystem -- it is also reported to work
-with FreeBSD systems featuring a Linux-compatible /proc.
+`htop` allows scrolling the list of processes vertically and horizontally to see their full command lines and related information like memory and CPU consumption.
 
-This software has evolved considerably during the last months,
-and is reasonably complete, but there is still room for
-improvement. Read the TODO file to see what's known to be missing.
+The information displayed is configurable through a graphical setup and can be sorted and filtered interactively.
 
-Comparison between 'htop' and 'top'
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Tasks related to processes (e.g. killing and renicing) can be done without entering their PIDs.
 
- * In 'htop' you can scroll the list vertically and horizontally
-   to see all processes and full command lines.
- * In 'top' you are subject to a delay for each unassigned
-   key you press (especially annoying when multi-key escape
-   sequences are triggered by accident).
- * 'htop' starts faster ('top' seems to collect data for a while
-   before displaying anything).
- * In 'htop' you don't need to type the process number to
-   kill a process, in 'top' you do.
- * In 'htop' you don't need to type the process number or
-   the priority value to renice a process, in 'top' you do.
- * In 'htop' you can kill multiple processes at once.
- * 'top' is older, hence, more tested.
+Running `htop` requires `ncurses` libraries (typically named libncursesw*).
 
-Compilation instructions
-~~~~~~~~~~~~~~~~~~~~~~~~
+For more information and details on how to contribute to `htop` visit [htop.dev](https://htop.dev).
 
-This program is distributed as a standard autotools-based package.
-See the INSTALL file for detailed instructions, but you are
-probably used to the common "configure/make/make install" routine.
+## Build instructions
 
-See the manual page (man htop) or the on-line help ('F1' or 'h'
-inside htop) for a list of supported key commands.
+This program is distributed as a standard GNU autotools-based package.
 
-if not all keys work check your curses configuration.
+Compiling `htop` requires the header files for `ncurses` (libncursesw*-dev). Install these and other required packages for C development from your package manager.
+
+Then, when compiling from a [release tarball](https://bintray.com/htop/source/htop), run:
+
+~~~ shell
+./configure && make
+~~~
+
+Alternatively, for compiling sources downloaded from the Git repository (`git clone` or downloads from [Github releases](https://github.com/htop-dev/htop/releases/)),
+install the header files for `ncurses` (libncursesw*-dev) and other required development packages from your distribution's package manager. Then run:
+
+~~~ shell
+./autogen.sh && ./configure && make
+~~~
+
+By default `make install` will install into `/usr/local`, for changing the path use `./configure --prefix=/some/path`.
+
+See the manual page (`man htop`) or the on-line help ('F1' or 'h' inside `htop`) for a list of supported key commands.
+
+## Support
+
+If you have trouble running `htop` please consult your Operating System / Linux distribution documentation for getting support and filing bugs.
+
+## Bugs, development feedback
+
+We have a [development mailing list](https://htop.dev/mailinglist.html). Feel free to subscribe for release announcements or asking questions on the development of htop.
+
+You can also join our IRC channel #htop on freenode and talk to the developers there.
+
+If you have found an issue with the source of htop, please check whether this has already been reported in our [Github issue tracker](https://github.com/htop-dev/htop/issues).
+If not, please file a new issue describing the problem you have found, the location in the source code you are referring to and a possible fix.
+
+## History
+
+`htop` was invented, developed and maintained by Hisham Muhammad from 2004 to 2019. His [legacy repository](https://github.com/hishamhm/htop/) has been archived to preserve the history.
+
+In 2020 a [team](https://github.com/orgs/htop-dev/people) took over the development amicably and continues to maintain `htop` collaboratively.
+
+## License
+
+GNU General Public License, version 2 (GPL-2.0)

README.md

@@ -0,0 +1 @@
+README

RichString.c

@@ -1,67 +1,145 @@
+/*
+htop - RichString.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 "RichString.h"
 
 #include <stdlib.h>
 #include <string.h>
-#include <curses.h>
 
-#include "debug.h"
-#include <assert.h>
+#include "Macros.h"
+#include "XUtils.h"
 
-#define RICHSTRING_MAXLEN 300
 
-/*{
+#define charBytes(n) (sizeof(CharType) * (n))
 
-#define RichString_init(this) (this)->len = 0
-#define RichString_initVal(this) (this).len = 0
-
-typedef struct RichString_ {
-   int len;
-   chtype chstr[RICHSTRING_MAXLEN+1];
-} RichString;
-
-}*/
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
-#endif
-
-void RichString_write(RichString* this, int attrs, char* data) {
-   RichString_init(this);
-   RichString_append(this, attrs, data);
+static void RichString_extendLen(RichString* this, int len) {
+   if (this->chlen <= RICHSTRING_MAXLEN) {
+      if (len > RICHSTRING_MAXLEN) {
+         this->chptr = xMalloc(charBytes(len + 1));
+         memcpy(this->chptr, this->chstr, charBytes(this->chlen));
+      }
+   } else {
+      if (len <= RICHSTRING_MAXLEN) {
+         memcpy(this->chstr, this->chptr, charBytes(len));
+         free(this->chptr);
+         this->chptr = this->chstr;
+      } else {
+         this->chptr = xRealloc(this->chptr, charBytes(len + 1));
+      }
    }
 
-inline void RichString_append(RichString* this, int attrs, char* data) {
-   RichString_appendn(this, attrs, data, strlen(data));
+   RichString_setChar(this, len, 0);
+   this->chlen = len;
 }
 
-inline void RichString_appendn(RichString* this, int attrs, char* data, int len) {
-   int last = MIN(RICHSTRING_MAXLEN - 1, len + this->len);
-   for (int i = this->len, j = 0; i < last; i++, j++)
-      this->chstr[i] = data[j] | attrs;
-   this->chstr[last] = 0;
-   this->len = last;
+static void RichString_setLen(RichString* this, int len) {
+   if (len < RICHSTRING_MAXLEN && this->chlen < RICHSTRING_MAXLEN) {
+      RichString_setChar(this, len, 0);
+      this->chlen = len;
+   } else {
+      RichString_extendLen(this, len);
+   }
 }
 
-void RichString_setAttr(RichString *this, int attrs) {
-   chtype* ch = this->chstr;
-   for (int i = 0; i < this->len; i++) {
+#ifdef HAVE_LIBNCURSESW
+
+static inline void RichString_writeFrom(RichString* this, int attrs, const char* data_c, int from, int len) {
+   wchar_t data[len + 1];
+   len = mbstowcs(data, data_c, len);
+   if (len < 0)
+      return;
+
+   int newLen = from + len;
+   RichString_setLen(this, newLen);
+   for (int i = from, j = 0; i < newLen; i++, j++) {
+      this->chptr[i] = (CharType) { .attr = attrs & 0xffffff, .chars = { (iswprint(data[j]) ? data[j] : '?') } };
+   }
+}
+
+inline void RichString_setAttrn(RichString* this, int attrs, int start, int finish) {
+   cchar_t* ch = this->chptr + start;
+   finish = CLAMP(finish, 0, this->chlen - 1);
+   for (int i = start; i <= finish; i++) {
+      ch->attr = attrs;
+      ch++;
+   }
+}
+
+int RichString_findChar(RichString* this, char c, int start) {
+   wchar_t wc = btowc(c);
+   cchar_t* ch = this->chptr + start;
+   for (int i = start; i < this->chlen; i++) {
+      if (ch->chars[0] == wc)
+         return i;
+      ch++;
+   }
+   return -1;
+}
+
+#else /* HAVE_LIBNCURSESW */
+
+static inline void RichString_writeFrom(RichString* this, int attrs, const char* data_c, int from, int len) {
+   int newLen = from + len;
+   RichString_setLen(this, newLen);
+   for (int i = from, j = 0; i < newLen; i++, j++) {
+      this->chptr[i] = (((unsigned char)data_c[j]) >= 32 ? ((unsigned char)data_c[j]) : '?') | attrs;
+   }
+   this->chptr[newLen] = 0;
+}
+
+void RichString_setAttrn(RichString* this, int attrs, int start, int finish) {
+   chtype* ch = this->chptr + start;
+   finish = CLAMP(finish, 0, this->chlen - 1);
+   for (int i = start; i <= finish; i++) {
       *ch = (*ch & 0xff) | attrs;
       ch++;
    }
 }
 
-void RichString_applyAttr(RichString *this, int attrs) {
-   chtype* ch = this->chstr;
-   for (int i = 0; i < this->len; i++) {
-      *ch |= attrs;
+int RichString_findChar(RichString* this, char c, int start) {
+   chtype* ch = this->chptr + start;
+   for (int i = start; i < this->chlen; i++) {
+      if ((*ch & 0xff) == (chtype) c)
+         return i;
       ch++;
    }
+   return -1;
+}
+
+#endif /* HAVE_LIBNCURSESW */
+
+void RichString_prune(RichString* this) {
+   if (this->chlen > RICHSTRING_MAXLEN)
+      free(this->chptr);
+   memset(this, 0, sizeof(RichString));
+   this->chptr = this->chstr;
+}
+
+void RichString_appendChr(RichString* this, char c, int count) {
+   int from = this->chlen;
+   int newLen = from + count;
+   RichString_setLen(this, newLen);
+   for (int i = from; i < newLen; i++) {
+      RichString_setChar(this, i, c);
+   }
 }
 
-RichString RichString_quickString(int attrs, char* data) {
-   RichString str;
-   RichString_initVal(str);
-   RichString_write(&str, attrs, data);
-   return str;
+void RichString_setAttr(RichString* this, int attrs) {
+   RichString_setAttrn(this, attrs, 0, this->chlen - 1);
+}
+
+void RichString_append(RichString* this, int attrs, const char* data) {
+   RichString_writeFrom(this, attrs, data, this->chlen, strlen(data));
+}
+
+void RichString_appendn(RichString* this, int attrs, const char* data, int len) {
+   RichString_writeFrom(this, attrs, data, this->chlen, len);
+}
+
+void RichString_write(RichString* this, int attrs, const char* data) {
+   RichString_writeFrom(this, attrs, data, 0, strlen(data));
 }

RichString.h

@@ -1,42 +1,61 @@
-/* Do not edit this file. It was automatically generated. */
-
 #ifndef HEADER_RichString
 #define HEADER_RichString
+/*
+htop - RichString.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 "config.h"
+
+#include "ProvideCurses.h"
 
 
-#include <stdlib.h>
-#include <string.h>
-#include <curses.h>
+#define RichString_size(this) ((this)->chlen)
+#define RichString_sizeVal(this) ((this).chlen)
 
-#include "debug.h"
-#include <assert.h>
+#define RichString_begin(this) RichString (this); RichString_beginAllocated(this)
+#define RichString_beginAllocated(this) do { memset(&(this), 0, sizeof(RichString)); (this).chptr = (this).chstr; } while(0)
+#define RichString_end(this) RichString_prune(&(this))
 
-#define RICHSTRING_MAXLEN 300
-
-
-#define RichString_init(this) (this)->len = 0
-#define RichString_initVal(this) (this).len = 0
-
-typedef struct RichString_ {
-   int len;
-   chtype chstr[RICHSTRING_MAXLEN+1];
-} RichString;
-
-
-#ifndef MIN
-#define MIN(a,b) ((a)<(b)?(a):(b))
+#ifdef HAVE_LIBNCURSESW
+#define RichString_printVal(this, y, x) mvadd_wchstr(y, x, (this).chptr)
+#define RichString_printoffnVal(this, y, x, off, n) mvadd_wchnstr(y, x, (this).chptr + (off), n)
+#define RichString_getCharVal(this, i) ((this).chptr[i].chars[0] & 255)
+#define RichString_setChar(this, at, ch) do { (this)->chptr[(at)] = (CharType) { .chars = { ch, 0 } }; } while (0)
+#define CharType cchar_t
+#else
+#define RichString_printVal(this, y, x) mvaddchstr(y, x, (this).chptr)
+#define RichString_printoffnVal(this, y, x, off, n) mvaddchnstr(y, x, (this).chptr + (off), n)
+#define RichString_getCharVal(this, i) ((this).chptr[i])
+#define RichString_setChar(this, at, ch) do { (this)->chptr[(at)] = ch; } while (0)
+#define CharType chtype
 #endif
 
-void RichString_write(RichString* this, int attrs, char* data);
+#define RICHSTRING_MAXLEN 350
 
-inline void RichString_append(RichString* this, int attrs, char* data);
+typedef struct RichString_ {
+   int chlen;
+   CharType* chptr;
+   CharType chstr[RICHSTRING_MAXLEN + 1];
+   int highlightAttr;
+} RichString;
 
-inline void RichString_appendn(RichString* this, int attrs, char* data, int len);
+void RichString_setAttrn(RichString* this, int attrs, int start, int finish);
+
+int RichString_findChar(RichString* this, char c, int start);
+
+void RichString_prune(RichString* this);
 
 void RichString_setAttr(RichString* this, int attrs);
 
-void RichString_applyAttr(RichString *this, int attrs);
+void RichString_appendChr(RichString* this, char c, int count);
 
-RichString RichString_quickString(int attrs, char* data);
+void RichString_append(RichString* this, int attrs, const char* data);
+
+void RichString_appendn(RichString* this, int attrs, const char* data, int len);
+
+void RichString_write(RichString* this, int attrs, const char* data);
 
 #endif

ScreenManager.c

@@ -1,225 +1,319 @@
 /*
-htop
-(C) 2004-2006 Hisham H. Muhammad
-Released under the GNU GPL, see the COPYING file
+htop - ScreenManager.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 "ScreenManager.h"
-#include "Panel.h"
-#include "Object.h"
-#include "Vector.h"
-#include "FunctionBar.h"
 
-#include "debug.h"
 #include <assert.h>
-
 #include <stdbool.h>
+#include <stdlib.h>
+#include <sys/time.h>
 
-/*{
+#include "CRT.h"
+#include "FunctionBar.h"
+#include "Object.h"
+#include "ProcessList.h"
+#include "ProvideCurses.h"
+#include "XUtils.h"
 
-typedef enum Orientation_ {
-   VERTICAL,
-   HORIZONTAL
-} Orientation;
 
-typedef struct ScreenManager_ {
-   int x1;
-   int y1;
-   int x2;
-   int y2;
-   Orientation orientation;
-   Vector* items;
-   Vector* fuBars;
-   int itemCount;
-   FunctionBar* fuBar;
-   bool owner;
-} ScreenManager;
-
-}*/
-
-ScreenManager* ScreenManager_new(int x1, int y1, int x2, int y2, Orientation orientation, bool owner) {
+ScreenManager* ScreenManager_new(Header* header, const Settings* settings, const State* state, bool owner) {
    ScreenManager* this;
-   this = malloc(sizeof(ScreenManager));
-   this->x1 = x1;
-   this->y1 = y1;
-   this->x2 = x2;
-   this->y2 = y2;
-   this->fuBar = NULL;
-   this->orientation = orientation;
-   this->items = Vector_new(PANEL_CLASS, owner, DEFAULT_SIZE, NULL);
-   this->fuBars = Vector_new(FUNCTIONBAR_CLASS, true, DEFAULT_SIZE, NULL);
-   this->itemCount = 0;
+   this = xMalloc(sizeof(ScreenManager));
+   this->x1 = 0;
+   this->y1 = header->height;
+   this->x2 = 0;
+   this->y2 = -1;
+   this->panels = Vector_new(Class(Panel), owner, DEFAULT_SIZE);
+   this->panelCount = 0;
+   this->header = header;
+   this->settings = settings;
+   this->state = state;
    this->owner = owner;
+   this->allowFocusChange = true;
    return this;
 }
 
 void ScreenManager_delete(ScreenManager* this) {
-   Vector_delete(this->items);
-   Vector_delete(this->fuBars);
+   Vector_delete(this->panels);
    free(this);
 }
 
 inline int ScreenManager_size(ScreenManager* this) {
-   return this->itemCount;
+   return this->panelCount;
 }
 
-void ScreenManager_add(ScreenManager* this, Panel* item, FunctionBar* fuBar, int size) {
-   if (this->orientation == HORIZONTAL) {
+void ScreenManager_add(ScreenManager* this, Panel* item, int size) {
    int lastX = 0;
-      if (this->itemCount > 0) {
-         Panel* last = (Panel*) Vector_get(this->items, this->itemCount - 1);
+   if (this->panelCount > 0) {
+      Panel* last = (Panel*) Vector_get(this->panels, this->panelCount - 1);
       lastX = last->x + last->w + 1;
    }
+   int height = LINES - this->y1 + this->y2;
    if (size > 0) {
-         Panel_resize(item, size, LINES-this->y1+this->y2);
+      Panel_resize(item, size, height);
    } else {
-         Panel_resize(item, COLS-this->x1+this->x2-lastX, LINES-this->y1+this->y2);
+      Panel_resize(item, COLS - this->x1 + this->x2 - lastX, height);
    }
    Panel_move(item, lastX, this->y1);
-   }
-   // TODO: VERTICAL
-   Vector_add(this->items, item);
-   if (fuBar)
-      Vector_add(this->fuBars, fuBar);
-   else
-      Vector_add(this->fuBars, FunctionBar_new(0, NULL, NULL, NULL));
-   if (!this->fuBar && fuBar) this->fuBar = fuBar;
+   Vector_add(this->panels, item);
    item->needsRedraw = true;
-   this->itemCount++;
+   this->panelCount++;
 }
 
-Panel* ScreenManager_remove(ScreenManager* this, int index) {
-   assert(this->itemCount > index);
-   Panel* panel = (Panel*) Vector_remove(this->items, index);
-   Vector_remove(this->fuBars, index);
-   this->fuBar = NULL;
-   this->itemCount--;
+Panel* ScreenManager_remove(ScreenManager* this, int idx) {
+   assert(this->panelCount > idx);
+   Panel* panel = (Panel*) Vector_remove(this->panels, idx);
+   this->panelCount--;
    return panel;
 }
 
-void ScreenManager_setFunctionBar(ScreenManager* this, FunctionBar* fuBar) {
-   if (this->owner && this->fuBar)
-      FunctionBar_delete((Object*)this->fuBar);
-   this->fuBar = fuBar;
-}
-
 void ScreenManager_resize(ScreenManager* this, int x1, int y1, int x2, int y2) {
    this->x1 = x1;
    this->y1 = y1;
    this->x2 = x2;
    this->y2 = y2;
-   int items = this->itemCount;
+   int panels = this->panelCount;
    int lastX = 0;
-   for (int i = 0; i < items - 1; i++) {
-      Panel* panel = (Panel*) Vector_get(this->items, i);
+   for (int i = 0; i < panels - 1; i++) {
+      Panel* panel = (Panel*) Vector_get(this->panels, i);
       Panel_resize(panel, panel->w, LINES - y1 + y2);
       Panel_move(panel, lastX, y1);
       lastX = panel->x + panel->w + 1;
    }
-   Panel* panel = (Panel*) Vector_get(this->items, items-1);
+   Panel* panel = (Panel*) Vector_get(this->panels, panels - 1);
    Panel_resize(panel, COLS - x1 + x2 - lastX, LINES - y1 + y2);
    Panel_move(panel, lastX, y1);
 }
 
+static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTimeout, bool* redraw, bool* rescan, bool* timedOut) {
+   ProcessList* pl = this->header->pl;
+
+   struct timeval tv;
+   gettimeofday(&tv, NULL);
+   double newTime = ((double)tv.tv_sec * 10) + ((double)tv.tv_usec / 100000);
+
+   *timedOut = (newTime - *oldTime > this->settings->delay);
+   *rescan |= *timedOut;
+
+   if (newTime < *oldTime) {
+      *rescan = true; // clock was adjusted?
+   }
+
+   if (*rescan) {
+      *oldTime = newTime;
+      ProcessList_scan(pl, this->state->pauseProcessUpdate);
+      if (*sortTimeout == 0 || this->settings->treeView) {
+         ProcessList_sort(pl);
+         *sortTimeout = 1;
+      }
+      *redraw = true;
+   }
+   if (*redraw) {
+      ProcessList_rebuildPanel(pl);
+      Header_draw(this->header);
+   }
+   *rescan = false;
+}
+
+static void ScreenManager_drawPanels(ScreenManager* this, int focus) {
+   const int nPanels = this->panelCount;
+   for (int i = 0; i < nPanels; i++) {
+      Panel* panel = (Panel*) Vector_get(this->panels, i);
+      Panel_draw(panel, i == focus, !((panel == this->state->panel) && this->state->hideProcessSelection));
+      mvvline(panel->y, panel->x + panel->w, ' ', panel->h + 1);
+   }
+}
+
+static Panel* setCurrentPanel(const ScreenManager* this, Panel* panel) {
+   FunctionBar_draw(panel->currentBar);
+   if (panel == this->state->panel && this->state->pauseProcessUpdate) {
+      FunctionBar_append("PAUSED", CRT_colors[PAUSED]);
+   }
+
+   return panel;
+}
+
 void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
    bool quit = false;
    int focus = 0;
 
-   Panel* panelFocus = (Panel*) Vector_get(this->items, focus);
-   if (this->fuBar)
-      FunctionBar_draw(this->fuBar, NULL);
+   Panel* panelFocus = setCurrentPanel(this, (Panel*) Vector_get(this->panels, focus));
+
+   double oldTime = 0.0;
+
+   int ch = ERR;
+   int closeTimeout = 0;
+
+   bool timedOut = true;
+   bool redraw = true;
+   bool rescan = false;
+   int sortTimeout = 0;
+   int resetSortTimeout = 5;
 
-   int ch = 0;
    while (!quit) {
-      int items = this->itemCount;
-      for (int i = 0; i < items; i++) {
-         Panel* panel = (Panel*) Vector_get(this->items, i);
-         Panel_draw(panel, i == focus);
-         if (i < items) {
-            if (this->orientation == HORIZONTAL) {
-               mvvline(panel->y, panel->x+panel->w, ' ', panel->h+1);
+      if (this->header) {
+         checkRecalculation(this, &oldTime, &sortTimeout, &redraw, &rescan, &timedOut);
       }
-         }
-      }
-      FunctionBar* bar = (FunctionBar*) Vector_get(this->fuBars, focus);
-      if (bar)
-         this->fuBar = bar;
-      if (this->fuBar)
-         FunctionBar_draw(this->fuBar, NULL);
 
+      if (redraw) {
+         ScreenManager_drawPanels(this, focus);
+      }
+
+      int prevCh = ch;
+      set_escdelay(25);
       ch = getch();
 
-      bool loop = false;
-      if (ch == KEY_MOUSE) {
+      HandlerResult result = IGNORED;
+      if (ch == KEY_MOUSE && this->settings->enableMouse) {
+         ch = ERR;
          MEVENT mevent;
          int ok = getmouse(&mevent);
          if (ok == OK) {
+            if (mevent.bstate & BUTTON1_RELEASED) {
                if (mevent.y == LINES - 1) {
-               ch = FunctionBar_synthesizeEvent(this->fuBar, mevent.x);
+                  ch = FunctionBar_synthesizeEvent(panelFocus->currentBar, mevent.x);
                } else {
-               for (int i = 0; i < this->itemCount; i++) {
-                  Panel* panel = (Panel*) Vector_get(this->items, i);
-                  if (mevent.x > panel->x && mevent.x <= panel->x+panel->w &&
-                     mevent.y > panel->y && mevent.y <= panel->y+panel->h) {
+                  for (int i = 0; i < this->panelCount; i++) {
+                     Panel* panel = (Panel*) Vector_get(this->panels, i);
+                     if (mevent.x >= panel->x && mevent.x <= panel->x + panel->w) {
+                        if (mevent.y == panel->y) {
+                           ch = EVENT_HEADER_CLICK(mevent.x - panel->x);
+                           break;
+                        } else if (mevent.y > panel->y && mevent.y <= panel->y + panel->h) {
+                           ch = KEY_MOUSE;
+                           if (panel == panelFocus || this->allowFocusChange) {
                               focus = i;
-                     panelFocus = panel;
+                              panelFocus = setCurrentPanel(this, panel);
+                              Object* oldSelection = Panel_getSelected(panel);
                               Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1);
-                     loop = true;
+                              if (Panel_getSelected(panel) == oldSelection) {
+                                 ch = KEY_RECLICK;
+                              }
+                           }
                            break;
                         }
                      }
                   }
                }
+            #if NCURSES_MOUSE_VERSION > 1
+            } else if (mevent.bstate & BUTTON4_PRESSED) {
+               ch = KEY_WHEELUP;
+            } else if (mevent.bstate & BUTTON5_PRESSED) {
+               ch = KEY_WHEELDOWN;
+            #endif
             }
-      if (loop) continue;
-      
-      if (panelFocus->eventHandler) {
-         HandlerResult result = panelFocus->eventHandler(panelFocus, ch);
-         if (result == HANDLED) {
+         }
+      }
+      if (ch == ERR) {
+         sortTimeout--;
+         if (prevCh == ch && !timedOut) {
+            closeTimeout++;
+            if (closeTimeout == 100) {
+               break;
+            }
+         } else {
+            closeTimeout = 0;
+         }
+         redraw = false;
          continue;
-         } else if (result == BREAK_LOOP) {
+      }
+      switch (ch) {
+         case KEY_ALT('H'): ch = KEY_LEFT; break;
+         case KEY_ALT('J'): ch = KEY_DOWN; break;
+         case KEY_ALT('K'): ch = KEY_UP; break;
+         case KEY_ALT('L'): ch = KEY_RIGHT; break;
+      }
+      redraw = true;
+      if (Panel_eventHandlerFn(panelFocus)) {
+         result = Panel_eventHandler(panelFocus, ch);
+      }
+      if (result & SYNTH_KEY) {
+         ch = result >> 16;
+      }
+      if (result & REDRAW) {
+         sortTimeout = 0;
+      }
+      if (result & RESCAN) {
+         rescan = true;
+         sortTimeout = 0;
+      }
+      if (result & HANDLED) {
+         continue;
+      } else if (result & BREAK_LOOP) {
          quit = true;
          continue;
       }
-      }
 
       switch (ch) {
-      case ERR:
-         continue;
       case KEY_RESIZE:
       {
          ScreenManager_resize(this, this->x1, this->y1, this->x2, this->y2);
          continue;
       }
       case KEY_LEFT:
+      case KEY_CTRL('B'):
+         if (this->panelCount < 2) {
+            goto defaultHandler;
+         }
+
+         if (!this->allowFocusChange) {
+            break;
+         }
+
 tryLeft:
-         if (focus > 0)
+         if (focus > 0) {
             focus--;
-         panelFocus = (Panel*) Vector_get(this->items, focus);
-         if (Panel_getSize(panelFocus) == 0 && focus > 0)
+         }
+
+         panelFocus = setCurrentPanel(this, (Panel*) Vector_get(this->panels, focus));
+         if (Panel_size(panelFocus) == 0 && focus > 0) {
             goto tryLeft;
+         }
+
          break;
       case KEY_RIGHT:
+      case KEY_CTRL('F'):
       case 9:
-         tryRight:
-         if (focus < this->itemCount - 1)
-            focus++;
-         panelFocus = (Panel*) Vector_get(this->items, focus);
-         if (Panel_getSize(panelFocus) == 0 && focus < this->itemCount - 1)
-            goto tryRight;
+         if (this->panelCount < 2) {
+            goto defaultHandler;
+         }
+         if (!this->allowFocusChange) {
+            break;
+         }
+
+tryRight:
+         if (focus < this->panelCount - 1) {
+            focus++;
+         }
+
+         panelFocus = setCurrentPanel(this, (Panel*) Vector_get(this->panels, focus));
+         if (Panel_size(panelFocus) == 0 && focus < this->panelCount - 1) {
+            goto tryRight;
+         }
+
          break;
-      case KEY_F(10):
-      case 'q':
       case 27:
+      case 'q':
+      case KEY_F(10):
          quit = true;
          continue;
       default:
+defaultHandler:
+         sortTimeout = resetSortTimeout;
          Panel_onKey(panelFocus, ch);
          break;
       }
    }
 
+   if (lastFocus) {
       *lastFocus = panelFocus;
+   }
+
+   if (lastKey) {
       *lastKey = ch;
    }
+}