Tag 3.0.0beta5

- sort entries according to the spec
- add to the `Monitor` category

.gitignore

@@ -20,6 +20,7 @@ htop
 .deps/
 Makefile
 Makefile.in
+INSTALL
 aclocal.m4
 autom4te.cache/
 compile

Action.c

@@ -26,6 +26,7 @@ in the source distribution for its full text.
 #include <math.h>
 #include <pwd.h>
 #include <stdlib.h>
+#include <string.h>
 #include <stdbool.h>
 #include <sys/param.h>
 #include <sys/time.h>
@@ -80,7 +81,7 @@ Object* Action_pickFromVector(State* st, Panel* list, int x) {
       header->pl->following = pid;
       unfollow = true;
    }
-   ScreenManager_run(scr, &panelFocus, &ch);
+   ScreenManager_run(scr, &panelFocus, &ch, NULL);
    if (unfollow) {
       header->pl->following = -1;
    }
@@ -106,7 +107,7 @@ static void Action_runSetup(Settings* settings, const Header* header, ProcessLis
    CategoriesPanel_makeMetersPage(panelCategories);
    Panel* panelFocus;
    int ch;
-   ScreenManager_run(scr, &panelFocus, &ch);
+   ScreenManager_run(scr, &panelFocus, &ch, "Setup");
    ScreenManager_delete(scr);
    if (settings->changed) {
       Header_writeBackToSettings(header);
@@ -171,9 +172,10 @@ static bool collapseIntoParent(Panel* panel) {
 }
 
 Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
-   settings->sortKey = sortKey;
-   settings->direction = 1;
-   settings->treeView = false;
+   ScreenSettings* ss = settings->ss;
+   ss->sortKey = sortKey;
+   ss->direction = 1;
+   ss->treeView = false;
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
 }
 
@@ -181,11 +183,12 @@ 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;
+   ScreenSettings* ss = st->settings->ss;
+   ProcessField* fields = ss->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)
+      if (fields[i] == ss->sortKey)
          Panel_setSelected(sortPanel, i);
       free(name);
    }
@@ -234,8 +237,9 @@ static Htop_Reaction actionToggleProgramPath(State* st) {
 }
 
 static Htop_Reaction actionToggleTreeView(State* st) {
-   st->settings->treeView = !st->settings->treeView;
-   if (st->settings->treeView) st->settings->direction = 1;
+   ScreenSettings* ss = st->settings->ss;
+   ss->treeView = !ss->treeView;
+   if (ss->treeView) ss->direction = 1;
    ProcessList_expandTree(st->pl);
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
 }
@@ -263,7 +267,7 @@ static Htop_Reaction actionLowerPriority(State* st) {
 }
 
 static Htop_Reaction actionInvertSortOrder(State* st) {
-   Settings_invertSortOrder(st->settings);
+   ScreenSettings_invertSortOrder(st->settings->ss);
    return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
 }
 
@@ -277,7 +281,7 @@ static Htop_Reaction actionExpandOrCollapse(State* st) {
 }
 
 static Htop_Reaction actionCollapseIntoParent(State* st) {
-   if (!st->settings->treeView) {
+   if (!st->settings->ss->treeView) {
       return HTOP_OK;
    }
    bool changed = collapseIntoParent(st->panel);
@@ -285,13 +289,52 @@ static Htop_Reaction actionCollapseIntoParent(State* st) {
 }
 
 static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
-   return st->settings->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
+   return st->settings->ss->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
 }
 
 static Htop_Reaction actionQuit() {
    return HTOP_QUIT;
 }
 
+static Htop_Reaction actionNextScreen(State* st) {
+   Settings* settings = st->settings;
+   settings->ssIndex++;
+   if (settings->ssIndex == settings->nScreens) {
+      settings->ssIndex = 0;
+   }
+   settings->ss = settings->screens[settings->ssIndex];
+   return HTOP_REFRESH;
+}
+
+static Htop_Reaction actionPrevScreen(State* st) {
+   Settings* settings = st->settings;
+   if (settings->ssIndex == 0) {
+      settings->ssIndex = settings->nScreens - 1;
+   } else {
+      settings->ssIndex--;
+   }
+   settings->ss = settings->screens[settings->ssIndex];
+   return HTOP_REFRESH;
+}
+
+Htop_Reaction Action_setScreenTab(Settings* settings, int x) {
+   int s = 2;
+   for (unsigned int i = 0; i < settings->nScreens; i++) {
+      if (x < s) {
+         return 0;
+      }
+      const char* name = settings->screens[i]->name;
+      int len = strlen(name);
+      if (x <= s + len + 1) {
+         settings->ssIndex = i;
+         settings->ss = settings->screens[i];
+         return HTOP_REFRESH;
+      }
+      s += len + 3;
+   }
+   return 0;
+}
+
 static Htop_Reaction actionSetAffinity(State* st) {
    if (st->pl->cpuCount == 1)
       return HTOP_OK;
@@ -474,7 +517,7 @@ static Htop_Reaction actionHelp(State* st) {
       addattrstr(CRT_colors[CPU_NICE_TEXT], "low-priority"); addstr("/");
       addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
       addattrstr(CRT_colors[CPU_KERNEL], "kernel"); addstr("/");
-      addattrstr(CRT_colors[CPU_STEAL], "virtualiz");
+      addattrstr(CRT_colors[CPU_GUEST], "virtualiz");
       addattrstr(CRT_colors[BAR_SHADOW], "               used%");
    }
    addattrstr(CRT_colors[BAR_BORDER], "]");
@@ -596,5 +639,7 @@ void Action_setBindings(Htop_Action* keys) {
    keys['U'] = actionUntagAll;
    keys['c'] = actionTagAllChildren;
    keys['e'] = actionShowEnvScreen;
+   keys['\t'] = actionNextScreen;
+   keys[KEY_SHIFT_TAB] = actionPrevScreen;
 }
 

Action.h

@@ -49,6 +49,8 @@ Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey);
 
 // ----------------------------------------
 
+Htop_Reaction Action_setScreenTab(Settings* settings, int x);
+
 Htop_Reaction Action_follow(State* st);
 
 

CRT.c

@@ -42,6 +42,7 @@ in the source distribution for its full text.
 #define KEY_WHEELUP KEY_F(20)
 #define KEY_WHEELDOWN KEY_F(21)
 #define KEY_RECLICK KEY_F(22)
+#define KEY_SHIFT_TAB KEY_F(23)
 
 //#link curses
 
@@ -128,6 +129,11 @@ typedef enum ColorElements_ {
    CPU_SOFTIRQ,
    CPU_STEAL,
    CPU_GUEST,
+   PANEL_EDIT,
+   SCREENS_OTH_BORDER,
+   SCREENS_OTH_TEXT,
+   SCREENS_CUR_BORDER,
+   SCREENS_CUR_TEXT,
    LAST_COLORELEMENT
 } ColorElements;
 
@@ -232,6 +238,11 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Magenta,Black),
       [CPU_STEAL] = ColorPair(Cyan,Black),
       [CPU_GUEST] = ColorPair(Cyan,Black),
+      [PANEL_EDIT] = ColorPair(White,Blue),
+      [SCREENS_OTH_BORDER] = ColorPair(Blue,Blue),
+      [SCREENS_OTH_TEXT] = ColorPair(Black,Blue),
+      [SCREENS_CUR_BORDER] = ColorPair(Green,Green),
+      [SCREENS_CUR_TEXT] = ColorPair(Black,Green),
    },
    [COLORSCHEME_MONOCHROME] = {
       [RESET_COLOR] = A_NORMAL,
@@ -291,6 +302,11 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = A_BOLD,
       [CPU_STEAL] = A_REVERSE,
       [CPU_GUEST] = A_REVERSE,
+      [PANEL_EDIT] = A_BOLD,
+      [SCREENS_OTH_BORDER] = A_DIM,
+      [SCREENS_OTH_TEXT] = A_DIM,
+      [SCREENS_CUR_BORDER] = A_REVERSE,
+      [SCREENS_CUR_TEXT] = A_REVERSE,
    },
    [COLORSCHEME_BLACKONWHITE] = {
       [RESET_COLOR] = ColorPair(Black,White),
@@ -350,6 +366,11 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,White),
       [CPU_STEAL] = ColorPair(Cyan,White),
       [CPU_GUEST] = ColorPair(Cyan,White),
+      [PANEL_EDIT] = ColorPair(White,Blue),
+      [SCREENS_OTH_BORDER] = A_BOLD | ColorPair(Black,White),
+      [SCREENS_OTH_TEXT] = A_BOLD | ColorPair(Black,White),
+      [SCREENS_CUR_BORDER] = ColorPair(Green,Green),
+      [SCREENS_CUR_TEXT] = ColorPair(Black,Green),
    },
    [COLORSCHEME_LIGHTTERMINAL] = {
       [RESET_COLOR] = ColorPair(Black,Black),
@@ -409,6 +430,11 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,Black),
       [CPU_STEAL] = ColorPair(Black,Black),
       [CPU_GUEST] = ColorPair(Black,Black),
+      [PANEL_EDIT] = ColorPair(White,Blue),
+      [SCREENS_OTH_BORDER] = ColorPair(Blue,Black),
+      [SCREENS_OTH_TEXT] = ColorPair(Blue,Black),
+      [SCREENS_CUR_BORDER] = ColorPair(Green,Green),
+      [SCREENS_CUR_TEXT] = ColorPair(Black,Green),
    },
    [COLORSCHEME_MIDNIGHT] = {
       [RESET_COLOR] = ColorPair(White,Blue),
@@ -468,6 +494,11 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Black,Blue),
       [CPU_STEAL] = ColorPair(White,Blue),
       [CPU_GUEST] = ColorPair(White,Blue),
+      [PANEL_EDIT] = ColorPair(White,Blue),
+      [SCREENS_OTH_BORDER] = A_BOLD | ColorPair(Yellow,Blue),
+      [SCREENS_OTH_TEXT] = ColorPair(Cyan,Blue),
+      [SCREENS_CUR_BORDER] = ColorPair(Cyan,Cyan),
+      [SCREENS_CUR_TEXT] = ColorPair(Black,Cyan),
    },
    [COLORSCHEME_BLACKNIGHT] = {
       [RESET_COLOR] = ColorPair(Cyan,Black),
@@ -527,12 +558,15 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [CPU_SOFTIRQ] = ColorPair(Blue,Black),
       [CPU_STEAL] = ColorPair(Cyan,Black),
       [CPU_GUEST] = ColorPair(Cyan,Black),
+      [PANEL_EDIT] = ColorPair(White,Cyan),
+      [SCREENS_OTH_BORDER] = ColorPair(White,Black),
+      [SCREENS_OTH_TEXT] = ColorPair(Cyan,Black),
+      [SCREENS_CUR_BORDER] = A_BOLD | ColorPair(White,Black),
+      [SCREENS_CUR_TEXT] = A_BOLD | ColorPair(Green,Black),
    },
    [COLORSCHEME_BROKENGRAY] = { 0 } // dynamically generated.
 };
 
-int CRT_cursorX = 0;
-
 int CRT_scrollHAmount = 5;
 
 int CRT_scrollWheelVAmount = 10;
@@ -641,12 +675,16 @@ void CRT_init(int delay, int colorScheme) {
       define_key("\033[13~", KEY_F(3));
       define_key("\033[14~", KEY_F(4));
       define_key("\033[17;2~", KEY_F(18));
+      define_key("\033[Z", KEY_SHIFT_TAB);
       char sequence[3] = "\033a";
       for (char c = 'a'; c <= 'z'; c++) {
          sequence[1] = c;
          define_key(sequence, KEY_ALT('A' + (c - 'a')));
       }
    }
+   if (String_startsWith(CRT_termType, "rxvt")) {
+      define_key("\033[Z", KEY_SHIFT_TAB);
+   }
 #ifndef DEBUG
    signal(11, CRT_handleSIGSEGV);
 #endif

CRT.h

@@ -31,6 +31,7 @@ in the source distribution for its full text.
 #define KEY_WHEELUP KEY_F(20)
 #define KEY_WHEELDOWN KEY_F(21)
 #define KEY_RECLICK KEY_F(22)
+#define KEY_SHIFT_TAB KEY_F(23)
 
 //#link curses
 
@@ -116,6 +117,11 @@ typedef enum ColorElements_ {
    CPU_SOFTIRQ,
    CPU_STEAL,
    CPU_GUEST,
+   PANEL_EDIT,
+   SCREENS_OTH_BORDER,
+   SCREENS_OTH_TEXT,
+   SCREENS_CUR_BORDER,
+   SCREENS_CUR_TEXT,
    LAST_COLORELEMENT
 } ColorElements;
 
@@ -144,8 +150,6 @@ int* CRT_colors;
 
 extern int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT];
 
-extern int CRT_cursorX;
-
 extern int CRT_scrollHAmount;
 
 extern int CRT_scrollWheelVAmount;

CategoriesPanel.c

@@ -10,7 +10,7 @@ in the source distribution for its full text.
 #include "AvailableMetersPanel.h"
 #include "MetersPanel.h"
 #include "DisplayOptionsPanel.h"
-#include "ColumnsPanel.h"
+#include "ScreensPanel.h"
 #include "ColorsPanel.h"
 #include "AvailableColumnsPanel.h"
 
@@ -64,9 +64,11 @@ static void CategoriesPanel_makeColorsPage(CategoriesPanel* this) {
    ScreenManager_add(this->scr, colors, -1);
 }
 
-static void CategoriesPanel_makeColumnsPage(CategoriesPanel* this) {
-   Panel* columns = (Panel*) ColumnsPanel_new(this->settings);
+static void CategoriesPanel_makeScreensPage(CategoriesPanel* this) {
+   Panel* screens = (Panel*) ScreensPanel_new(this->settings);
+   Panel* columns = (Panel*) ((ScreensPanel*)screens)->columns;
    Panel* availableColumns = (Panel*) AvailableColumnsPanel_new(columns);
+   ScreenManager_add(this->scr, screens, 20);
    ScreenManager_add(this->scr, columns, 20);
    ScreenManager_add(this->scr, availableColumns, -1);
 }
@@ -118,7 +120,7 @@ static HandlerResult CategoriesPanel_eventHandler(Panel* super, int ch) {
             CategoriesPanel_makeColorsPage(this);
             break;
          case 3:
-            CategoriesPanel_makeColumnsPage(this);
+            CategoriesPanel_makeScreensPage(this);
             break;
       }
    }
@@ -143,10 +145,10 @@ CategoriesPanel* CategoriesPanel_new(ScreenManager* scr, Settings* settings, Hea
    this->settings = settings;
    this->header = header;
    this->pl = pl;
-   Panel_setHeader(super, "Setup");
+   Panel_setHeader(super, "Categories");
    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));
+   Panel_add(super, (Object*) ListItem_new("Screens", 0));
    return this;
 }

ColumnsPanel.c

@@ -22,8 +22,9 @@ in the source distribution for its full text.
 
 typedef struct ColumnsPanel_ {
    Panel super;
+   ScreenSettings* ss;
+   bool* changed;
 
-   Settings* settings;
    bool moving;
 } ColumnsPanel;
 
@@ -123,22 +124,31 @@ PanelClass ColumnsPanel_class = {
    .eventHandler = ColumnsPanel_eventHandler
 };
 
-ColumnsPanel* ColumnsPanel_new(Settings* settings) {
-   ColumnsPanel* this = AllocThis(ColumnsPanel);
+void ColumnsPanel_fill(ColumnsPanel* this, ScreenSettings* ss) {
    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;
+   Panel_prune(super);
+   ProcessField* fields = ss->fields;
    for (; *fields; fields++) {
       if (Process_fields[*fields].name) {
          Panel_add(super, (Object*) ListItem_new(Process_fields[*fields].name, *fields));
       }
    }
+   this->ss = ss;
+}
+
+ColumnsPanel* ColumnsPanel_new(ScreenSettings* ss, bool* changed) {
+   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->ss = ss;
+   this->changed = changed;
+   this->moving = false;
+   Panel_setHeader(super, "Active Columns");
+   
+   ColumnsPanel_fill(this, ss);
+
    return this;
 }
 
@@ -154,14 +164,14 @@ int ColumnsPanel_fieldNameToIndex(const char* name) {
 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;
+   *(this->changed) = true;
+   this->ss->fields = xRealloc(this->ss->fields, sizeof(ProcessField) * (size+1));
+   this->ss->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->ss->fields[i] = key;
+      this->ss->flags |= key < 1000 ? Process_fields[key].flags : 0;
    }
-   this->settings->fields[size] = 0;
+   this->ss->fields[size] = 0;
 }
 

ColumnsPanel.h

@@ -14,15 +14,18 @@ in the source distribution for its full text.
 
 typedef struct ColumnsPanel_ {
    Panel super;
+   ScreenSettings* ss;
+   bool* changed;
 
-   Settings* settings;
    bool moving;
 } ColumnsPanel;
 
 
 extern PanelClass ColumnsPanel_class;
 
-ColumnsPanel* ColumnsPanel_new(Settings* settings);
+void ColumnsPanel_fill(ColumnsPanel* this, ScreenSettings* ss);
+
+ColumnsPanel* ColumnsPanel_new(ScreenSettings* ss, bool* changed);
 
 int ColumnsPanel_fieldNameToIndex(const char* name);
 

DisplayOptionsPanel.c

@@ -83,7 +83,6 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    this->scr = scr;
 
    Panel_setHeader(super, "Display options");
-   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Tree view"), &(settings->treeView)));
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Shadow other users' processes"), &(settings->shadowOtherUsers)));
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Hide kernel threads"), &(settings->hideKernelThreads)));
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Hide userland process threads"), &(settings->hideUserlandThreads)));
@@ -97,5 +96,6 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Count CPUs from 0 instead of 1"), &(settings->countCPUsFromZero)));
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Update process names on every refresh"), &(settings->updateProcessNames)));
    Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Add guest time in CPU meter percentage"), &(settings->accountGuestInCPUMeter)));
+   Panel_add(super, (Object*) CheckItem_newByRef(xStrdup("Show tabs for screens"), &(settings->screenTabs)));
    return this;
 }

FunctionBar.c

@@ -96,11 +96,12 @@ void FunctionBar_setLabel(FunctionBar* this, int event, const char* text) {
    }
 }
 
-void FunctionBar_draw(const FunctionBar* this, char* buffer) {
-   FunctionBar_drawAttr(this, buffer, CRT_colors[FUNCTION_BAR]);
+int FunctionBar_draw(const FunctionBar* this, char* buffer) {
+   return FunctionBar_drawAttr(this, buffer, CRT_colors[FUNCTION_BAR]);
 }
 
-void FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr) {
+int FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr) {
+   int cursorX = 0;
    attrset(CRT_colors[FUNCTION_BAR]);
    mvhline(LINES-1, 0, ' ', COLS);
    int x = 0;
@@ -115,12 +116,10 @@ void FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr) {
    if (buffer) {
       attrset(attr);
       mvaddstr(LINES-1, x, buffer);
-      CRT_cursorX = x + strlen(buffer);
-      curs_set(1);
-   } else {
-      curs_set(0);
+      cursorX = x + strlen(buffer);
    }
    attrset(CRT_colors[RESET_COLOR]);
+   return cursorX;
 }
 
 int FunctionBar_synthesizeEvent(const FunctionBar* this, int pos) {

FunctionBar.h

@@ -30,9 +30,9 @@ void FunctionBar_delete(FunctionBar* this);
 
 void FunctionBar_setLabel(FunctionBar* this, int event, const char* text);
 
-void FunctionBar_draw(const FunctionBar* this, char* buffer);
+int FunctionBar_draw(const FunctionBar* this, char* buffer);
 
-void FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr);
+int FunctionBar_drawAttr(const FunctionBar* this, char* buffer, int attr);
 
 int FunctionBar_synthesizeEvent(const FunctionBar* this, int pos);
 

Header.c

@@ -62,7 +62,7 @@ void Header_delete(Header* this) {
 
 void Header_populateFromSettings(Header* this) {
    Header_forEachColumn(this, col) {
-      MeterColumnSettings* colSettings = &this->settings->columns[col];
+      MeterColumnSettings* colSettings = &this->settings->meterColumns[col];
       for (int i = 0; i < colSettings->len; i++) {
          Header_addMeterByName(this, colSettings->names[i], col);
          if (colSettings->modes[i] != 0) {
@@ -75,7 +75,7 @@ void Header_populateFromSettings(Header* this) {
 
 void Header_writeBackToSettings(const Header* this) {
    Header_forEachColumn(this, col) {
-      MeterColumnSettings* colSettings = &this->settings->columns[col];
+      MeterColumnSettings* colSettings = &this->settings->meterColumns[col];
       
       String_freeArray(colSettings->names);
       free(colSettings->modes);
@@ -211,6 +211,9 @@ int Header_calculateHeight(Header* this) {
       }
       maxHeight = MAX(maxHeight, height);
    }
+   if (this->settings->screenTabs) {
+      maxHeight++;
+   }
    this->height = maxHeight;
    this->pad = pad;
    return maxHeight;

INSTALL

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

IncSet.c

@@ -38,6 +38,7 @@ typedef struct IncMode_ {
 typedef struct IncSet_ {
    IncMode modes[2];
    IncMode* active;
+   Panel* panel;
    FunctionBar* defaultBar;
    bool filtering;
    bool found;
@@ -115,23 +116,35 @@ static void updateWeakPanel(IncSet* this, Panel* panel, Vector* lines) {
    }
 }
 
-static bool search(IncMode* mode, Panel* panel, IncMode_GetPanelValue getPanelValue) {
+static bool search(IncSet* this, 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)) {
+      if (String_contains_i(getPanelValue(panel, i), this->active->buffer)) {
          Panel_setSelected(panel, i);
          found = true;
          break;
       }
    }
-   if (found)
-      FunctionBar_draw(mode->bar, mode->buffer);
-   else
-      FunctionBar_drawAttr(mode->bar, mode->buffer, CRT_colors[FAILED_SEARCH]);
+   IncSet_drawBar(this, found ? CRT_colors[FUNCTION_BAR] : CRT_colors[FAILED_SEARCH]);
    return found;
 }
 
+void IncSet_activate(IncSet* this, IncType type, Panel* panel) {
+   this->active = &(this->modes[type]);
+   panel->currentBar = this->active->bar;
+   panel->cursorOn = true;
+   this->panel = panel;
+   IncSet_drawBar(this, CRT_colors[FUNCTION_BAR]);
+}
+
+static void IncSet_deactivate(IncSet* this, Panel* panel) {
+   this->active = NULL;
+   Panel_setDefaultBar(panel);
+   panel->cursorOn = false;
+   FunctionBar_draw(this->defaultBar, NULL);
+}
+
 bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue getPanelValue, Vector* lines) {
    if (ch == ERR)
       return true;
@@ -189,13 +202,11 @@ bool IncSet_handleKey(IncSet* this, int ch, Panel* panel, IncMode_GetPanelValue
       } else {
          IncMode_reset(mode);
       }
-      this->active = NULL;
-      Panel_setDefaultBar(panel);
-      FunctionBar_draw(this->defaultBar, NULL);
+      IncSet_deactivate(this, panel);
       doSearch = false;
    }
    if (doSearch) {
-      this->found = search(mode, panel, getPanelValue);
+      this->found = search(this, panel, getPanelValue);
    }
    if (filterChanged && lines) {
       updateWeakPanel(this, panel, lines);
@@ -210,15 +221,11 @@ const char* IncSet_getListItemValue(Panel* panel, int i) {
    return "";
 }
 
-void IncSet_activate(IncSet* this, IncType type, Panel* panel) {
-   this->active = &(this->modes[type]);
-   FunctionBar_draw(this->active->bar, this->active->buffer);
-   panel->currentBar = this->active->bar;
-}
-
-void IncSet_drawBar(IncSet* this) {
+void IncSet_drawBar(IncSet* this, int attr) {
    if (this->active) {
-      FunctionBar_draw(this->active->bar, this->active->buffer);
+      int cursorX = FunctionBar_drawAttr(this->active->bar, this->active->buffer, attr);
+      this->panel->cursorY = LINES - 1;
+      this->panel->cursorX = cursorX;
    } else {
       FunctionBar_draw(this->defaultBar, NULL);
    }

IncSet.h

@@ -33,6 +33,7 @@ typedef struct IncMode_ {
 typedef struct IncSet_ {
    IncMode modes[2];
    IncMode* active;
+   Panel* panel;
    FunctionBar* defaultBar;
    bool filtering;
    bool found;
@@ -45,13 +46,13 @@ IncSet* IncSet_new(FunctionBar* bar);
 
 void IncSet_delete(IncSet* this);
 
+void IncSet_activate(IncSet* this, IncType type, Panel* panel);
+
 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(IncSet* this);
+void IncSet_drawBar(IncSet* this, int attr);
 
 int IncSet_synthesizeEvent(IncSet* this, int x);
 

InfoScreen.c

@@ -85,7 +85,7 @@ void InfoScreen_drawTitled(InfoScreen* this, char* fmt, ...) {
    attrset(CRT_colors[DEFAULT_COLOR]);
    this->display->needsRedraw = true;
    Panel_draw(this->display, true);
-   IncSet_drawBar(this->inc);
+   IncSet_drawBar(this->inc, CRT_colors[FUNCTION_BAR]);
    va_end(ap);
 }
 
@@ -115,11 +115,7 @@ void InfoScreen_run(InfoScreen* this) {
 
       Panel_draw(panel, true);
 
-      if (this->inc->active) {
-         (void) move(LINES-1, CRT_cursorX);
-      }
-      set_escdelay(25);
-      int ch = getch();
+      int ch = Panel_getCh(panel);
       
       if (ch == ERR) {
          if (As_InfoScreen(this)->onErr) {

ListItem.c

@@ -27,13 +27,13 @@ typedef struct ListItem_ {
 
 }*/
 
-static void ListItem_delete(Object* cast) {
+void ListItem_delete(Object* cast) {
    ListItem* this = (ListItem*)cast;
    free(this->value);
    free(this);
 }
 
-static void ListItem_display(Object* cast, RichString* out) {
+void ListItem_display(Object* cast, RichString* out) {
    ListItem* const this = (ListItem*)cast;
    assert (this != NULL);
    /*
@@ -59,11 +59,15 @@ ObjectClass ListItem_class = {
    .compare = ListItem_compare
 };
 
-ListItem* ListItem_new(const char* value, int key) {
-   ListItem* this = AllocThis(ListItem);
+void ListItem_init(ListItem* this, const char* value, int key) {
    this->value = xStrdup(value);
    this->key = key;
    this->moving = false;
+}
+
+ListItem* ListItem_new(const char* value, int key) {
+   ListItem* this = AllocThis(ListItem);
+   ListItem_init(this, value, key);
    return this;
 }
 

ListItem.h

@@ -19,8 +19,14 @@ typedef struct ListItem_ {
 } ListItem;
 
 
+void ListItem_delete(Object* cast);
+
+void ListItem_display(Object* cast, RichString* out);
+
 extern ObjectClass ListItem_class;
 
+void ListItem_init(ListItem* this, const char* value, int key);
+
 ListItem* ListItem_new(const char* value, int key);
 
 void ListItem_append(ListItem* this, const char* text);

MainPanel.c

@@ -72,20 +72,26 @@ static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
    
    Htop_Reaction reaction = HTOP_OK;
 
+   Settings* settings = this->state->settings;
+   ScreenSettings* ss = settings->ss;
+
    if (EVENT_IS_HEADER_CLICK(ch)) {
       int x = EVENT_HEADER_CLICK_GET_X(ch);
       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);
-         settings->treeView = false;
+      if (field == ss->sortKey) {
+         ScreenSettings_invertSortOrder(ss);
+         ss->treeView = false;
       } else {
          reaction |= Action_setSortKey(settings, field);
       }
       reaction |= HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_SAVE_SETTINGS; 
       result = HANDLED;
+   } else if (EVENT_IS_SCREEN_TAB_CLICK(ch)) {
+      int x = EVENT_SCREEN_TAB_GET_X(ch);
+      reaction |= Action_setScreenTab(settings, x);
+      result = HANDLED;
    } else if (ch != ERR && this->inc->active) {
       bool filterChanged = IncSet_handleKey(this->inc, ch, super, (IncMode_GetPanelValue) MainPanel_getValue, NULL);
       if (filterChanged) {
@@ -113,8 +119,8 @@ static HandlerResult MainPanel_eventHandler(Panel* super, int ch) {
    }
 
    if (reaction & HTOP_REDRAW_BAR) {
-      MainPanel_updateTreeFunctions(this, this->state->settings->treeView);
-      IncSet_drawBar(this->inc);
+      MainPanel_updateTreeFunctions(this, settings->ss->treeView);
+      IncSet_drawBar(this->inc, CRT_colors[FUNCTION_BAR]);
    }
    if (reaction & HTOP_UPDATE_PANELHDR) {
       ProcessList_printHeader(this->state->pl, Panel_getHeader(super));

Makefile.am

@@ -21,7 +21,7 @@ ClockMeter.c ColorsPanel.c ColumnsPanel.c CPUMeter.c CRT.c MainPanel.c \
 DisplayOptionsPanel.c FunctionBar.c Hashtable.c Header.c htop.c ListItem.c \
 LoadAverageMeter.c MemoryMeter.c Meter.c MetersPanel.c Object.c Panel.c \
 BatteryMeter.c Process.c ProcessList.c RichString.c ScreenManager.c Settings.c \
-SignalsPanel.c StringUtils.c SwapMeter.c TasksMeter.c UptimeMeter.c \
+SignalsPanel.c StringUtils.c SwapMeter.c TasksMeter.c UptimeMeter.c ScreensPanel.c \
 TraceScreen.c UsersTable.c Vector.c AvailableColumnsPanel.c AffinityPanel.c \
 HostnameMeter.c OpenFilesScreen.c Affinity.c IncSet.c Action.c EnvScreen.c \
 InfoScreen.c XAlloc.c
@@ -31,7 +31,7 @@ CategoriesPanel.h CheckItem.h ClockMeter.h ColorsPanel.h ColumnsPanel.h \
 CPUMeter.h CRT.h MainPanel.h DisplayOptionsPanel.h FunctionBar.h \
 Hashtable.h Header.h htop.h ListItem.h LoadAverageMeter.h MemoryMeter.h \
 BatteryMeter.h Meter.h MetersPanel.h Object.h Panel.h ProcessList.h RichString.h \
-ScreenManager.h Settings.h SignalsPanel.h StringUtils.h SwapMeter.h \
+ScreenManager.h Settings.h SignalsPanel.h StringUtils.h SwapMeter.h ScreensPanel.h \
 TasksMeter.h UptimeMeter.h TraceScreen.h UsersTable.h Vector.h Process.h \
 AffinityPanel.h HostnameMeter.h OpenFilesScreen.h Affinity.h IncSet.h Action.h \
 EnvScreen.h InfoScreen.h XAlloc.h
@@ -48,14 +48,16 @@ linux_platform_headers = \
 	linux/LinuxProcess.h \
 	linux/LinuxProcessList.h \
 	linux/LinuxCRT.h \
-	linux/Battery.h
+	linux/Battery.h \
+	linux/PerfCounter.h
 
 all_platform_headers += $(linux_platform_headers)
 
 if HTOP_LINUX
 AM_CFLAGS += -rdynamic
 myhtopplatsources = linux/Platform.c linux/IOPriorityPanel.c linux/IOPriority.c \
-linux/LinuxProcess.c linux/LinuxProcessList.c linux/LinuxCRT.c linux/Battery.c
+linux/LinuxProcess.c linux/LinuxProcessList.c linux/LinuxCRT.c linux/Battery.c \
+linux/PerfCounter.c
 
 myhtopplatheaders = $(linux_platform_headers)
 endif
@@ -201,6 +203,9 @@ profile:
 debug:
 	$(MAKE) all CFLAGS="" AM_CPPFLAGS="-ggdb -DDEBUG"
 
+symbols:
+	$(MAKE) all CFLAGS="" AM_CPPFLAGS="-ggdb -DNDEBUG"
+
 coverage:
 	$(MAKE) all CFLAGS="" AM_CPPFLAGS="-fprofile-arcs -ftest-coverage -DDEBUG" LDFLAGS="-lgcov"
 
@@ -210,6 +215,13 @@ coverage:
 cppcheck:
 	cppcheck -q -v . --enable=all -DHAVE_CGROUP -DHAVE_OPENVZ -DHAVE_TASKSTATS
 
+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:

Panel.c

@@ -40,8 +40,12 @@ typedef enum 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)
+#define EVENT_IS_HEADER_CLICK(ev_) (ev_ >= -10000 && ev_ < -9000)
+
+#define EVENT_SCREEN_TAB_CLICK(x_) (-20000 + x_)
+#define EVENT_SCREEN_TAB_GET_X(ev_) (ev_ + 20000)
+#define EVENT_IS_SCREEN_TAB_CLICK(ev_) (ev_ >= -20000 && ev_ < -10000)
 
 typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
 
@@ -57,6 +61,7 @@ typedef struct PanelClass_ {
 struct Panel_ {
    Object super;
    int x, y, w, h;
+   int cursorX, cursorY;
    WINDOW* window;
    Vector* items;
    int selected;
@@ -66,6 +71,7 @@ struct Panel_ {
    int scrollV;
    short scrollH;
    bool needsRedraw;
+   bool cursorOn;
    FunctionBar* currentBar;
    FunctionBar* defaultBar;
    RichString header;
@@ -85,6 +91,11 @@ struct Panel_ {
 
 #define KEY_CTRL(l) ((l)-'A'+1)
 
+void Panel_setCursorToSelection(Panel* this) {
+   this->cursorY = this->y + this->selected - this->scrollV + 1;
+   this->cursorX = this->x + this->selectedLen - this->scrollH;
+}
+
 PanelClass Panel_class = {
    .super = {
       .extends = Class(Object),
@@ -112,6 +123,8 @@ void Panel_init(Panel* this, int x, int y, int w, int h, ObjectClass* type, bool
    this->y = y;
    this->w = w;
    this->h = h;
+   this->cursorX = 0;
+   this->cursorY = 0;
    this->eventHandlerState = NULL;
    this->items = Vector_new(type, owner, DEFAULT_SIZE);
    this->scrollV = 0;
@@ -367,7 +380,6 @@ void Panel_draw(Panel* this, bool focus) {
       RichString_end(old);
    }
    this->oldSelected = this->selected;
-   move(0, 0);
 }
 
 bool Panel_onKey(Panel* this, int key) {
@@ -499,3 +511,15 @@ HandlerResult Panel_selectByTyping(Panel* this, int ch) {
    }
    return IGNORED;
 }
+
+int Panel_getCh(Panel* this) {
+   if (this->cursorOn) {
+      move(this->cursorY, this->cursorX);
+      curs_set(1);
+   } else {
+      curs_set(0);
+   }
+   set_escdelay(25);
+   return getch();
+}
+

Panel.h

@@ -29,8 +29,12 @@ typedef enum 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)
+#define EVENT_IS_HEADER_CLICK(ev_) (ev_ >= -10000 && ev_ < -9000)
+
+#define EVENT_SCREEN_TAB_CLICK(x_) (-20000 + x_)
+#define EVENT_SCREEN_TAB_GET_X(ev_) (ev_ + 20000)
+#define EVENT_IS_SCREEN_TAB_CLICK(ev_) (ev_ >= -20000 && ev_ < -10000)
 
 typedef HandlerResult(*Panel_EventHandler)(Panel*, int);
 
@@ -46,6 +50,7 @@ typedef struct PanelClass_ {
 struct Panel_ {
    Object super;
    int x, y, w, h;
+   int cursorX, cursorY;
    WINDOW* window;
    Vector* items;
    int selected;
@@ -55,6 +60,7 @@ struct Panel_ {
    int scrollV;
    short scrollH;
    bool needsRedraw;
+   bool cursorOn;
    FunctionBar* currentBar;
    FunctionBar* defaultBar;
    RichString header;
@@ -73,6 +79,8 @@ struct Panel_ {
 
 #define KEY_CTRL(l) ((l)-'A'+1)
 
+void Panel_setCursorToSelection(Panel* this);
+
 extern PanelClass Panel_class;
 
 Panel* Panel_new(int x, int y, int w, int h, bool owner, ObjectClass* type, FunctionBar* fuBar);
@@ -123,4 +131,7 @@ bool Panel_onKey(Panel* this, int key);
 
 HandlerResult Panel_selectByTyping(Panel* this, int ch);
 
+int Panel_getCh(Panel* this);
+
+
 #endif

Process.c

@@ -51,6 +51,7 @@ in the source distribution for its full text.
 #include "Object.h"
 
 #include <sys/types.h>
+#include <inttypes.h>
 
 #define PROCESS_FLAG_IO 0x0001
 
@@ -156,7 +157,7 @@ typedef struct ProcessFieldData_ {
    const char* name;
    const char* title;
    const char* description;
-   int flags;
+   uint64_t flags;
 } ProcessFieldData;
 
 // Implemented in platform-specific code:
@@ -370,6 +371,21 @@ void Process_outputRate(RichString* str, char* buffer, int n, double rate, int c
    }
 }
 
+void Process_printPercentage(float val, char* buffer, int n, int* attr) {
+   if (val >= 0) {
+      if (val < 100) {
+         xSnprintf(buffer, n, "%4.1f ", val);
+      } else if (val < 1000) {
+         xSnprintf(buffer, n, "%3d. ", (unsigned int)val); 
+      } else {
+         xSnprintf(buffer, n, "%4d ", (unsigned int)val); 
+      }
+   } else {
+      *attr = CRT_colors[PROCESS_SHADOW];
+      xSnprintf(buffer, n, " N/A ");
+   }
+}
+
 void Process_writeField(Process* this, RichString* str, ProcessField field) {
    char buffer[256]; buffer[255] = '\0';
    int attr = CRT_colors[DEFAULT_COLOR];
@@ -378,30 +394,15 @@ void Process_writeField(Process* this, RichString* str, ProcessField field) {
    bool coloring = this->settings->highlightMegabytes;
 
    switch (field) {
-   case PERCENT_CPU: {
-      if (this->percent_cpu > 999.9) {
-         xSnprintf(buffer, n, "%4d ", (unsigned int)this->percent_cpu); 
-      } else if (this->percent_cpu > 99.9) {
-         xSnprintf(buffer, n, "%3d. ", (unsigned int)this->percent_cpu); 
-      } else {
-         xSnprintf(buffer, n, "%4.1f ", this->percent_cpu);
-      }
-      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 PERCENT_CPU: Process_printPercentage(this->percent_cpu, buffer, n, &attr); break;
+   case PERCENT_MEM: Process_printPercentage(this->percent_mem, buffer, n, &attr); 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) {
+      ScreenSettings* ss = this->settings->ss;
+      if (!ss->treeView || this->indent == 0) {
          Process_writeCommand(this, attr, baseattr, str);
          return;
       } else {
@@ -422,7 +423,7 @@ void Process_writeField(Process* this, RichString* str, ProcessField field) {
             buf += written;
             n -= written;
          }
-         const char* draw = CRT_treeStr[lastItem ? (this->settings->direction == 1 ? TREE_STR_BEND : TREE_STR_TEND) : TREE_STR_RTEE];
+         const char* draw = CRT_treeStr[lastItem ? (ss->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);
@@ -493,7 +494,7 @@ void Process_writeField(Process* this, RichString* str, ProcessField field) {
 
 void Process_display(Object* cast, RichString* out) {
    Process* this = (Process*) cast;
-   ProcessField* fields = this->settings->fields;
+   ProcessField* fields = this->settings->ss->fields;
    RichString_prune(out);
    for (int i = 0; fields[i]; i++)
       As_Process(this)->writeField(this, out, fields[i]);
@@ -563,14 +564,15 @@ long Process_pidCompare(const void* v1, const void* v2) {
 long Process_compare(const void* v1, const void* v2) {
    Process *p1, *p2;
    Settings *settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   ScreenSettings* ss = settings->ss;
+   if (ss->direction == 1) {
       p1 = (Process*)v1;
       p2 = (Process*)v2;
    } else {
       p2 = (Process*)v1;
       p1 = (Process*)v2;
    }
-   switch (settings->sortKey) {
+   switch (ss->sortKey) {
    case PERCENT_CPU:
       return (p2->percent_cpu > p1->percent_cpu ? 1 : -1);
    case PERCENT_MEM:

Process.h

@@ -29,6 +29,7 @@ in the source distribution for its full text.
 #include "Object.h"
 
 #include <sys/types.h>
+#include <inttypes.h>
 
 #define PROCESS_FLAG_IO 0x0001
 
@@ -134,7 +135,7 @@ typedef struct ProcessFieldData_ {
    const char* name;
    const char* title;
    const char* description;
-   int flags;
+   uint64_t flags;
 } ProcessFieldData;
 
 // Implemented in platform-specific code:
@@ -183,6 +184,8 @@ void Process_printTime(RichString* str, unsigned long long totalHundredths);
 
 void Process_outputRate(RichString* str, char* buffer, int n, double rate, int coloring);
 
+void Process_printPercentage(float val, char* buffer, int n, int* attr);
+
 void Process_writeField(Process* this, RichString* str, ProcessField field);
 
 void Process_display(Object* cast, RichString* out);

ProcessList.c

@@ -124,14 +124,15 @@ void ProcessList_setPanel(ProcessList* this, Panel* panel) {
 
 void ProcessList_printHeader(ProcessList* this, RichString* header) {
    RichString_prune(header);
-   ProcessField* fields = this->settings->fields;
+   ProcessField* fields = this->settings->ss->fields;
    for (int i = 0; fields[i]; i++) {
-      const char* field = Process_fields[fields[i]].title;
+      unsigned int key = fields[i];
+      const char* field = Process_fields[key].title;
       if (!field) field = "- ";
-      if (!this->settings->treeView && this->settings->sortKey == fields[i])
-         RichString_append(header, CRT_colors[PANEL_SELECTION_FOCUS], field);
-      else
-         RichString_append(header, CRT_colors[PANEL_HEADER_FOCUS], field);
+      int color = (!this->settings->ss->treeView && this->settings->ss->sortKey == key)
+                ? CRT_colors[PANEL_SELECTION_FOCUS]
+                : CRT_colors[PANEL_HEADER_FOCUS];
+      RichString_append(header, color, field);
    }
 }
 
@@ -200,19 +201,19 @@ static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int i
 }
 
 void ProcessList_sort(ProcessList* this) {
-   if (!this->settings->treeView) {
+   if (!this->settings->ss->treeView) {
       Vector_insertionSort(this->processes);
    } else {
       // Save settings
-      int direction = this->settings->direction;
-      int sortKey = this->settings->sortKey;
+      int direction = this->settings->ss->direction;
+      int sortKey = this->settings->ss->sortKey;
       // Sort by PID
-      this->settings->sortKey = PID;
-      this->settings->direction = 1;
+      this->settings->ss->sortKey = PID;
+      this->settings->ss->direction = 1;
       Vector_quickSort(this->processes);
       // Restore settings
-      this->settings->sortKey = sortKey;
-      this->settings->direction = direction;
+      this->settings->ss->sortKey = sortKey;
+      this->settings->ss->direction = direction;
       int vsize = Vector_size(this->processes);
       // Find all processes whose parent is not visible
       int size;
@@ -271,7 +272,7 @@ void ProcessList_sort(ProcessList* this) {
 
 ProcessField ProcessList_keyAt(ProcessList* this, int at) {
    int x = 0;
-   ProcessField* fields = this->settings->fields;
+   ProcessField* fields = this->settings->ss->fields;
    ProcessField field;
    for (int i = 0; (field = fields[i]); i++) {
       const char* title = Process_fields[field].title;

ScreenManager.c

@@ -13,6 +13,7 @@ in the source distribution for its full text.
 
 #include <assert.h>
 #include <time.h>
+#include <string.h>
 #include <stdlib.h>
 #include <stdbool.h>
 
@@ -35,6 +36,7 @@ typedef struct ScreenManager_ {
    int y2;
    Orientation orientation;
    Vector* panels;
+   const char* name;
    int panelCount;
    const Header* header;
    const Settings* settings;
@@ -71,30 +73,46 @@ inline int ScreenManager_size(ScreenManager* this) {
 }
 
 void ScreenManager_add(ScreenManager* this, Panel* item, int size) {
+   ScreenManager_insert(this, item, size, Vector_size(this->panels));
+}
+
+void ScreenManager_insert(ScreenManager* this, Panel* item, int size, int idx) {
    if (this->orientation == HORIZONTAL) {
       int lastX = 0;
-      if (this->panelCount > 0) {
-         Panel* last = (Panel*) Vector_get(this->panels, this->panelCount - 1);
+      if (idx > 0) {
+         Panel* last = (Panel*) Vector_get(this->panels, idx - 1);
          lastX = last->x + last->w + 1;
       }
       int height = LINES - this->y1 + this->y2;
-      if (size > 0) {
-         Panel_resize(item, size, height);
-      } else {
-         Panel_resize(item, COLS-this->x1+this->x2-lastX, height);
+      if (size <= 0) {
+         size = COLS-this->x1+this->x2-lastX;
       }
+      Panel_resize(item, size, height);
       Panel_move(item, lastX, this->y1);
+      if (idx < this->panelCount) {
+         for (int i = idx + 1; i <= this->panelCount; i++) {
+            Panel* p = (Panel*) Vector_get(this->panels, i);
+            Panel_move(p, p->x + size, p->y);
+         }
+      }
    }
    // TODO: VERTICAL
-   Vector_add(this->panels, item);
+   Vector_insert(this->panels, idx, item);
    item->needsRedraw = true;
    this->panelCount++;
 }
 
 Panel* ScreenManager_remove(ScreenManager* this, int idx) {
    assert(this->panelCount > idx);
+   int w = ((Panel*) Vector_get(this->panels, idx))->w;
    Panel* panel = (Panel*) Vector_remove(this->panels, idx);
    this->panelCount--;
+   if (idx < this->panelCount) {
+      for (int i = idx; i < this->panelCount; i++) {
+         Panel* p = (Panel*) Vector_get(this->panels, i);
+         Panel_move(p, p->x - w, p->y);
+      }
+   }
    return panel;
 }
 
@@ -131,7 +149,7 @@ static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTi
    if (*rescan) {
       *oldTime = newTime;
       ProcessList_scan(pl);
-      if (*sortTimeout == 0 || this->settings->treeView) {
+      if (*sortTimeout == 0 || this->settings->ss->treeView) {
          ProcessList_sort(pl);
          *sortTimeout = 1;
       }
@@ -144,7 +162,50 @@ static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTi
    *rescan = false;
 }
 
+static inline bool drawTab(int* y, int* x, int l, const char* name, bool cur) {
+   attrset(CRT_colors[cur ? SCREENS_CUR_BORDER : SCREENS_OTH_BORDER]);
+   mvaddch(*y, *x, '[');
+   (*x)++;
+   if (*x >= l) return false;
+   int nameLen = strlen(name);
+   int n = MIN(l - *x, nameLen);
+   attrset(CRT_colors[cur ? SCREENS_CUR_TEXT : SCREENS_OTH_TEXT]);
+   mvaddnstr(*y, *x, name, n);
+   *x += n;
+   if (*x >= l) return false;
+   attrset(CRT_colors[cur ? SCREENS_CUR_BORDER : SCREENS_OTH_BORDER]);
+   mvaddch(*y, *x, ']');
+   *x += 2;
+   if (*x >= l) return false;
+   return true;
+}
+
+static void ScreenManager_drawScreenTabs(ScreenManager* this) {
+   ScreenSettings** screens = this->settings->screens;
+   int cur = this->settings->ssIndex;
+   int l = COLS;
+   Panel* panel = (Panel*) Vector_get(this->panels, 0);
+   int y = panel->y - 1;
+   int x = 2;
+   
+   if (this->name) {
+      drawTab(&y, &x, l, this->name, true);
+      return;
+   }
+   
+   for (int s = 0; screens[s]; s++) {
+      bool ok = drawTab(&y, &x, l, screens[s]->name, s == cur);
+      if (!ok) {
+         break;
+      }
+   }
+   attrset(CRT_colors[RESET_COLOR]);
+}
+
 static void ScreenManager_drawPanels(ScreenManager* this, int focus) {
+   if (this->settings->screenTabs) {
+      ScreenManager_drawScreenTabs(this);
+   }
    int nPanels = this->panelCount;
    for (int i = 0; i < nPanels; i++) {
       Panel* panel = (Panel*) Vector_get(this->panels, i);
@@ -157,16 +218,17 @@ static void ScreenManager_drawPanels(ScreenManager* this, int focus) {
    }
 }
 
-static Panel* setCurrentPanel(Panel* panel) {
+static Panel* setCurrentPanel(ScreenManager* this, int focus) {
+   Panel* panel = (Panel*) Vector_get(this->panels, focus);
    FunctionBar_draw(panel->currentBar, NULL);
    return panel;
 }
 
-void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
+void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey, char* name) {
    bool quit = false;
    int focus = 0;
    
-   Panel* panelFocus = setCurrentPanel((Panel*) Vector_get(this->panels, focus));
+   Panel* panelFocus = setCurrentPanel(this, focus);
 
    double oldTime = 0.0;
 
@@ -179,6 +241,8 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
    int sortTimeout = 0;
    int resetSortTimeout = 5;
    
+   this->name = name;
+
    while (!quit) {
       if (this->header) {
          checkRecalculation(this, &oldTime, &sortTimeout, &redraw, &rescan, &timedOut);
@@ -189,8 +253,7 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
       }
 
       int prevCh = ch;
-      set_escdelay(25);
-      ch = getch();
+      ch = Panel_getCh(panelFocus);
 
       HandlerResult result = IGNORED;
       if (ch == KEY_MOUSE) {
@@ -208,11 +271,14 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
                         if (mevent.y == panel->y) {
                            ch = EVENT_HEADER_CLICK(mevent.x - panel->x);
                            break;
+                        } else if (this->settings->screenTabs && mevent.y == panel->y - 1) {
+                           ch = EVENT_SCREEN_TAB_CLICK(mevent.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 = setCurrentPanel(panel);
+                              panelFocus = setCurrentPanel(this, i);
                               Object* oldSelection = Panel_getSelected(panel);
                               Panel_setSelected(panel, mevent.y - panel->y + panel->scrollV - 1);
                               if (Panel_getSelected(panel) == oldSelection) {
@@ -288,7 +354,7 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
          tryLeft:
          if (focus > 0)
             focus--;
-         panelFocus = setCurrentPanel((Panel*) Vector_get(this->panels, focus));
+         panelFocus = setCurrentPanel(this, focus);
          if (Panel_size(panelFocus) == 0 && focus > 0)
             goto tryLeft;
          break;
@@ -303,7 +369,7 @@ void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey) {
          tryRight:
          if (focus < this->panelCount - 1)
             focus++;
-         panelFocus = setCurrentPanel((Panel*) Vector_get(this->panels, focus));
+         panelFocus = setCurrentPanel(this, focus);
          if (Panel_size(panelFocus) == 0 && focus < this->panelCount - 1)
             goto tryRight;
          break;

ScreenManager.h

@@ -27,6 +27,7 @@ typedef struct ScreenManager_ {
    int y2;
    Orientation orientation;
    Vector* panels;
+   const char* name;
    int panelCount;
    const Header* header;
    const Settings* settings;
@@ -43,10 +44,12 @@ extern int ScreenManager_size(ScreenManager* this);
 
 void ScreenManager_add(ScreenManager* this, Panel* item, int size);
 
+void ScreenManager_insert(ScreenManager* this, Panel* item, int size, int idx);
+
 Panel* ScreenManager_remove(ScreenManager* this, int idx);
 
 void ScreenManager_resize(ScreenManager* this, int x1, int y1, int x2, int y2);
 
-void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey);
+void ScreenManager_run(ScreenManager* this, Panel** lastFocus, int* lastKey, char* name);
 
 #endif

ScreensPanel.c

@@ -0,0 +1,331 @@
+/*
+htop - ScreensPanel.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "ScreensPanel.h"
+#include "Platform.h"
+
+#include "StringUtils.h"
+#include "CRT.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+/*{
+#include "Panel.h"
+#include "ScreenManager.h"
+#include "ColumnsPanel.h"
+#include "Settings.h"
+#include "ListItem.h"
+
+#ifndef SCREEN_NAME_LEN
+#define SCREEN_NAME_LEN 20
+#endif
+
+typedef struct ScreensPanel_ {
+   Panel super;
+   
+   ScreenManager* scr;
+   Settings* settings;
+   ColumnsPanel* columns;
+   char buffer[SCREEN_NAME_LEN + 1];
+   char* saved;
+   int cursor;
+   bool moving;
+   bool renaming;
+} ScreensPanel;
+
+typedef struct ScreenListItem_ {
+   ListItem super;
+   ScreenSettings* ss;
+} ScreenListItem;
+
+}*/
+
+ObjectClass ScreenListItem_class = {
+   .extends = Class(ListItem),
+   .display = ListItem_display,
+   .delete = ListItem_delete,
+   .compare = ListItem_compare
+};
+
+ScreenListItem* ScreenListItem_new(const char* value, ScreenSettings* ss) {
+   ScreenListItem* this = AllocThis(ScreenListItem);
+   ListItem_init((ListItem*)this, value, 0);
+   this->ss = ss;
+   return this;
+}
+
+static const char* const ScreensFunctions[] = {"      ", "Rename", "      ", "      ", "New   ", "      ", "MoveUp", "MoveDn", "Remove", "Done  ", NULL};
+
+static void ScreensPanel_delete(Object* object) {
+   Panel* super = (Panel*) object;
+   ScreensPanel* this = (ScreensPanel*) object;
+   Panel_done(super);
+   free(this);
+}
+
+static HandlerResult ScreensPanel_eventHandlerRenaming(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   //ListItem* item = (ListItem*)Panel_getSelected(super);
+   if (ch >= 32 && ch < 127 && ch != 61 && ch != 22) {
+      if (this->cursor < SCREEN_NAME_LEN - 1) {
+         this->buffer[this->cursor] = ch;
+         this->cursor++;
+         super->selectedLen = strlen(this->buffer);
+         Panel_setCursorToSelection(super);
+      }
+   } else {
+      switch(ch) {
+         case 127:
+         case KEY_BACKSPACE:
+         {
+            if (this->cursor > 0) {
+               this->cursor--;
+               this->buffer[this->cursor] = '\0';
+               super->selectedLen = strlen(this->buffer);
+               Panel_setCursorToSelection(super);
+            }
+            break;
+         }
+         case 0x0a:
+         case 0x0d:
+         case KEY_ENTER:
+         {
+            ListItem* item = (ListItem*) Panel_getSelected(super);
+            free(this->saved);
+            item->value = xStrdup(this->buffer);
+            this->renaming = false;
+            super->cursorOn = false;
+            Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+            ScreensPanel_update(super);
+            break;
+         }
+         case 27: // Esc
+         {
+            ListItem* item = (ListItem*) Panel_getSelected(super);
+            item->value = this->saved;
+            this->renaming = false;
+            super->cursorOn = false;
+            Panel_setSelectionColor(super, CRT_colors[PANEL_SELECTION_FOCUS]);
+            break;
+         }
+      }
+   }
+   return HANDLED;
+}
+
+static void startRenaming(Panel* super) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   ListItem* item = (ListItem*) Panel_getSelected(super);
+   this->renaming = true;
+   super->cursorOn = true;
+   char* name = item->value;
+   this->saved = name;
+   strncpy(this->buffer, name, SCREEN_NAME_LEN);
+   this->buffer[SCREEN_NAME_LEN] = '\0';
+   this->cursor = strlen(this->buffer);
+   item->value = this->buffer;
+   Panel_setSelectionColor(super, CRT_colors[PANEL_EDIT]);
+   super->selectedLen = strlen(this->buffer);
+   Panel_setCursorToSelection(super);
+}
+
+static void rebuildSettingsArray(Panel* super) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   int n = Panel_size(super);
+   free(this->settings->screens);
+   this->settings->screens = xMalloc(sizeof(ScreenSettings*) * (n + 1));
+   this->settings->screens[n] = NULL;
+   for (int i = 0; i < n; i++) {
+      ScreenListItem* item = (ScreenListItem*) Panel_get(super, i);
+      this->settings->screens[i] = item->ss;
+   }
+   this->settings->nScreens = n;
+}
+
+static void addNewScreen(Panel* super) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   char* name = "New";
+   ScreenSettings* ss = Settings_newScreen(this->settings, name, "PID Command");
+   ScreenListItem* item = ScreenListItem_new(name, ss);
+   int idx = Panel_getSelectedIndex(super);
+   Panel_insert(super, idx + 1, (Object*) item);
+   Panel_setSelected(super, idx + 1);
+}
+
+static HandlerResult ScreensPanel_eventHandlerNormal(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+   
+   int selected = Panel_getSelectedIndex(super);
+   ScreenListItem* oldFocus = (ScreenListItem*) Panel_getSelected(super);
+   bool shouldRebuildArray = false;
+   HandlerResult result = IGNORED;
+   switch(ch) {
+      case 0x0a:
+      case 0x0d:
+      case KEY_ENTER:
+      case KEY_MOUSE:
+      case KEY_RECLICK:
+      {
+         this->moving = !(this->moving);
+         Panel_setSelectionColor(super, this->moving ? CRT_colors[PANEL_SELECTION_FOLLOW] : CRT_colors[PANEL_SELECTION_FOCUS]);
+         ((ListItem*)Panel_getSelected(super))->moving = this->moving;
+         result = HANDLED;
+         break;
+      }
+      case EVENT_SET_SELECTED:
+         result = HANDLED;
+         break;
+      case KEY_NPAGE:
+      case KEY_PPAGE:
+      case KEY_HOME:
+      case KEY_END: {
+         Panel_onKey(super, ch);
+         break;
+      }
+      case KEY_F(2):
+      case KEY_CTRL('R'):
+      {
+         startRenaming(super);
+         result = HANDLED;
+         break;
+      }
+      case KEY_F(5):
+      case KEY_CTRL('N'):
+      {
+         addNewScreen(super);
+         startRenaming(super);
+         shouldRebuildArray = true;
+         result = HANDLED;
+         break;
+      }
+      case KEY_UP:
+      {
+         if (!this->moving) {
+            Panel_onKey(super, ch);
+            break;
+         }
+         /* else fallthrough */
+      }
+      case KEY_F(7):
+      case '[':
+      case '-':
+      {
+         Panel_moveSelectedUp(super);
+         shouldRebuildArray = true;
+         result = HANDLED;
+         break;
+      }
+      case KEY_DOWN:
+      {
+         if (!this->moving) {
+            Panel_onKey(super, ch);
+            break;
+         }
+         /* else fallthrough */
+      }
+      case KEY_F(8):
+      case ']':
+      case '+':
+      {
+         Panel_moveSelectedDown(super);
+         shouldRebuildArray = true;
+         result = HANDLED;
+         break;
+      }
+      case KEY_F(9):
+      //case KEY_DC:
+      {
+         if (Panel_size(super) > 1) {
+            Panel_remove(super, selected);
+         }
+         shouldRebuildArray = true;
+         result = HANDLED;
+         break;
+      }
+      default:
+      {
+         if (ch < 255 && isalpha(ch))
+            result = Panel_selectByTyping(super, ch);
+         if (result == BREAK_LOOP)
+            result = IGNORED;
+         break;
+      }
+   }
+   ScreenListItem* newFocus = (ScreenListItem*) Panel_getSelected(super);
+   if (oldFocus != newFocus) {
+      ColumnsPanel_fill(this->columns, newFocus->ss);
+      result = HANDLED;
+   }
+   if (shouldRebuildArray) {
+      rebuildSettingsArray(super);
+   }
+   if (result == HANDLED)
+      ScreensPanel_update(super);
+   return result;
+}
+   
+static HandlerResult ScreensPanel_eventHandler(Panel* super, int ch) {
+   ScreensPanel* const this = (ScreensPanel*) super;
+
+   if (this->renaming) {
+      return ScreensPanel_eventHandlerRenaming(super, ch);
+   } else {
+      return ScreensPanel_eventHandlerNormal(super, ch);
+   }
+}
+
+PanelClass ScreensPanel_class = {
+   .super = {
+      .extends = Class(Panel),
+      .delete = ScreensPanel_delete
+   },
+   .eventHandler = ScreensPanel_eventHandler
+};
+
+ScreensPanel* ScreensPanel_new(Settings* settings) {
+   ScreensPanel* this = AllocThis(ScreensPanel);
+   Panel* super = (Panel*) this;
+   FunctionBar* fuBar = FunctionBar_new(ScreensFunctions, NULL, NULL);
+   Panel_init(super, 1, 1, 1, 1, Class(ListItem), true, fuBar);
+
+   this->settings = settings;
+   this->columns = ColumnsPanel_new(settings->screens[0], &(settings->changed));
+   this->moving = false;
+   this->renaming = false;
+   super->cursorOn = false;
+   this->cursor = 0;
+   Panel_setHeader(super, "Screens");
+
+   for (unsigned int i = 0; i < settings->nScreens; i++) {
+      ScreenSettings* ss = settings->screens[i];
+      char* name = ss->name;
+      Panel_add(super, (Object*) ScreenListItem_new(name, ss));
+   }
+   return this;
+}
+
+void ScreensPanel_update(Panel* super) {
+   ScreensPanel* this = (ScreensPanel*) super;
+   int size = Panel_size(super);
+   this->settings->changed = true;
+   this->settings->screens = xRealloc(this->settings->screens, sizeof(char*) * (size+1));
+   for (int i = 0; i < size; i++) {
+      ScreenListItem* item = (ScreenListItem*) Panel_get(super, i);
+      ScreenSettings* ss = item->ss;
+      free(ss->name);
+      this->settings->screens[i] = ss;
+      ss->name = xStrdup(((ListItem*) item)->value);
+   }
+   this->settings->screens[size] = NULL;
+}

ScreensPanel.h

@@ -0,0 +1,51 @@
+/* Do not edit this file. It was automatically generated. */
+
+#ifndef HEADER_ScreensPanel
+#define HEADER_ScreensPanel
+/*
+htop - ScreensPanel.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 "Panel.h"
+#include "ScreenManager.h"
+#include "ColumnsPanel.h"
+#include "Settings.h"
+#include "ListItem.h"
+
+#ifndef SCREEN_NAME_LEN
+#define SCREEN_NAME_LEN 20
+#endif
+
+typedef struct ScreensPanel_ {
+   Panel super;
+   
+   ScreenManager* scr;
+   Settings* settings;
+   ColumnsPanel* columns;
+   char buffer[SCREEN_NAME_LEN + 1];
+   char* saved;
+   int cursor;
+   bool moving;
+   bool renaming;
+} ScreensPanel;
+
+typedef struct ScreenListItem_ {
+   ListItem super;
+   ScreenSettings* ss;
+} ScreenListItem;
+
+
+extern ObjectClass ScreenListItem_class;
+
+ScreenListItem* ScreenListItem_new(const char* value, ScreenSettings* ss);
+
+extern PanelClass ScreensPanel_class;
+
+ScreensPanel* ScreensPanel_new(Settings* settings);
+
+void ScreensPanel_update(Panel* super);
+
+#endif

Settings.c

@@ -23,29 +23,44 @@ in the source distribution for its full text.
 #include "Process.h"
 #include <stdbool.h>
 
+typedef struct {
+   const char* name;
+   const char* columns;
+   const char* sortKey;
+} ScreenDefaults;
+
 typedef struct {
    int len;
    char** names;
    int* modes;
 } MeterColumnSettings;
 
+typedef struct {
+   char* name;
+   ProcessField* fields;
+   int flags;
+   int direction;
+   ProcessField sortKey;
+   bool treeView;
+} ScreenSettings;
+
 typedef struct Settings_ {
    char* filename;
    
-   MeterColumnSettings columns[2];
+   MeterColumnSettings meterColumns[2];
+
+   ScreenSettings** screens;
+   unsigned int nScreens;
+   unsigned int ssIndex;
+   ScreenSettings* ss;
 
-   ProcessField* fields;
-   int flags;
    int colorScheme;
    int delay;
 
    int cpuCount;
-   int direction;
-   ProcessField sortKey;
 
    bool countCPUsFromZero;
    bool detailedCPUTime;
-   bool treeView;
    bool showProgramPath;
    bool hideThreads;
    bool shadowOtherUsers;
@@ -58,6 +73,7 @@ typedef struct Settings_ {
    bool updateProcessNames;
    bool accountGuestInCPUMeter;
    bool headerMargin;
+   bool screenTabs;
 
    bool changed;
 } Settings;
@@ -68,25 +84,82 @@ typedef struct Settings_ {
 
 }*/
 
+static void writeList(FILE* fd, char** list, int len) {
+   const char* sep = "";
+   for (int i = 0; i < len; i++) {
+      fprintf(fd, "%s%s", sep, list[i]);
+      sep = " ";
+   }
+   fprintf(fd, "\n");
+}
+
+/*
+
+static char** readQuotedList(char* line) {
+   int n = 0;
+   char** list = xCalloc(sizeof(char*), 1);
+   int start = 0;
+   for (;;) {
+      while (line[start] && line[start] == ' ') {
+         start++;
+      }
+      if (line[start] != '"') {
+         break;
+      }
+      start++;
+      int close = start;
+      while (line[close] && line[close] != '"') {
+         close++;
+      }
+      int len = close - start;
+      char* item = xMalloc(len + 1);
+      strncpy(item, line + start, len);
+      item[len] = '\0';
+      list[n] = item;
+      n++;
+      list = xRealloc(list, sizeof(char*) * (n + 1));
+      start = close + 1;
+   }
+   list[n] = NULL;
+   return list;
+}
+
+static void writeQuotedList(FILE* fd, char** list) {
+   const char* sep = "";
+   for (int i = 0; list[i]; i++) {
+      fprintf(fd, "%s\"%s\"", sep, list[i]);
+      sep = " ";
+   }
+   fprintf(fd, "\n");
+}
+
+*/
+
 void Settings_delete(Settings* this) {
    free(this->filename);
-   free(this->fields);
-   for (unsigned int i = 0; i < (sizeof(this->columns)/sizeof(MeterColumnSettings)); i++) {
-      String_freeArray(this->columns[i].names);
-      free(this->columns[i].modes);
+   for (unsigned int i = 0; i < (sizeof(this->meterColumns)/sizeof(MeterColumnSettings)); i++) {
+      String_freeArray(this->meterColumns[i].names);
+      free(this->meterColumns[i].modes);
+   }
+   if (this->screens) {
+      for (unsigned int i = 0; this->screens[i]; i++) {
+         free(this->screens[i]->name);
+         free(this->screens[i]->fields);
+      }
+      free(this->screens);
    }
    free(this);
 }
 
-static void Settings_readMeters(Settings* this, char* line, int column) {
+static void Settings_readMeters(Settings* this, char* line, int side) {
    char* trim = String_trim(line);
    int nIds;
    char** ids = String_split(trim, ' ', &nIds);
    free(trim);
-   this->columns[column].names = ids;
+   this->meterColumns[side].names = ids;
 }
 
-static void Settings_readMeterModes(Settings* this, char* line, int column) {
+static void Settings_readMeterModes(Settings* this, char* line, int side) {
    char* trim = String_trim(line);
    int nIds;
    char** ids = String_split(trim, ' ', &nIds);
@@ -95,13 +168,13 @@ static void Settings_readMeterModes(Settings* this, char* line, int column) {
    for (int i = 0; ids[i]; i++) {
       len++;
    }
-   this->columns[column].len = len;
+   this->meterColumns[side].len = len;
    int* modes = xCalloc(len, sizeof(int));
    for (int i = 0; i < len; i++) {
       modes[i] = atoi(ids[i]);
    }
    String_freeArray(ids);
-   this->columns[column].modes = modes;
+   this->meterColumns[side].modes = modes;
 }
 
 static void Settings_defaultMeters(Settings* this) {
@@ -110,37 +183,62 @@ static void Settings_defaultMeters(Settings* this) {
       sizes[1]++;
    }
    for (int i = 0; i < 2; i++) {
-      this->columns[i].names = xCalloc(sizes[i] + 1, sizeof(char*));
-      this->columns[i].modes = xCalloc(sizes[i], sizeof(int));
-      this->columns[i].len = sizes[i];
+      this->meterColumns[i].names = xCalloc(sizes[i] + 1, sizeof(char*));
+      this->meterColumns[i].modes = xCalloc(sizes[i], sizeof(int));
+      this->meterColumns[i].len = sizes[i];
    }
    
    int r = 0;
    if (this->cpuCount > 8) {
-      this->columns[0].names[0] = xStrdup("LeftCPUs2");
-      this->columns[0].modes[0] = BAR_METERMODE;
-      this->columns[1].names[r] = xStrdup("RightCPUs2");
-      this->columns[1].modes[r++] = BAR_METERMODE;
+      this->meterColumns[0].names[0] = xStrdup("LeftCPUs2");
+      this->meterColumns[0].modes[0] = BAR_METERMODE;
+      this->meterColumns[1].names[r] = xStrdup("RightCPUs2");
+      this->meterColumns[1].modes[r++] = BAR_METERMODE;
    } else if (this->cpuCount > 4) {
-      this->columns[0].names[0] = xStrdup("LeftCPUs");
-      this->columns[0].modes[0] = BAR_METERMODE;
-      this->columns[1].names[r] = xStrdup("RightCPUs");
-      this->columns[1].modes[r++] = BAR_METERMODE;
+      this->meterColumns[0].names[0] = xStrdup("LeftCPUs");
+      this->meterColumns[0].modes[0] = BAR_METERMODE;
+      this->meterColumns[1].names[r] = xStrdup("RightCPUs");
+      this->meterColumns[1].modes[r++] = BAR_METERMODE;
    } else {
-      this->columns[0].names[0] = xStrdup("AllCPUs");
-      this->columns[0].modes[0] = BAR_METERMODE;
+      this->meterColumns[0].names[0] = xStrdup("AllCPUs");
+      this->meterColumns[0].modes[0] = BAR_METERMODE;
    }
-   this->columns[0].names[1] = xStrdup("Memory");
-   this->columns[0].modes[1] = BAR_METERMODE;
-   this->columns[0].names[2] = xStrdup("Swap");
-   this->columns[0].modes[2] = BAR_METERMODE;
+   this->meterColumns[0].names[1] = xStrdup("Memory");
+   this->meterColumns[0].modes[1] = BAR_METERMODE;
+   this->meterColumns[0].names[2] = xStrdup("Swap");
+   this->meterColumns[0].modes[2] = BAR_METERMODE;
    
-   this->columns[1].names[r] = xStrdup("Tasks");
-   this->columns[1].modes[r++] = TEXT_METERMODE;
-   this->columns[1].names[r] = xStrdup("LoadAverage");
-   this->columns[1].modes[r++] = TEXT_METERMODE;
-   this->columns[1].names[r] = xStrdup("Uptime");
-   this->columns[1].modes[r++] = TEXT_METERMODE;
+   this->meterColumns[1].names[r] = xStrdup("Tasks");
+   this->meterColumns[1].modes[r++] = TEXT_METERMODE;
+   this->meterColumns[1].names[r] = xStrdup("LoadAverage");
+   this->meterColumns[1].modes[r++] = TEXT_METERMODE;
+   this->meterColumns[1].names[r] = xStrdup("Uptime");
+   this->meterColumns[1].modes[r++] = TEXT_METERMODE;
+}
+
+static const char* toFieldName(int i) {
+   if (i < 0 || i > LAST_PROCESSFIELD) {
+      return "";
+   }
+   return Process_fields[i].name;
+}
+
+static int toFieldIndex(const char* str) {
+   if (isdigit(str[0])) {
+      // This "+1" is for compatibility with the older enum format.
+      int id = atoi(str) + 1;
+      if (id < Platform_numberOfFields && toFieldName(id)) {
+         return id;
+      }
+   } else {
+      for (int p = 1; p < LAST_PROCESSFIELD; p++) {
+         const char* pName = toFieldName(p);
+         if (pName && strcmp(pName, str) == 0) {
+            return p;
+         }
+      }
+   }
+   return -1;
 }
 
 static void readFields(ProcessField* fields, int* flags, const char* line) {
@@ -151,11 +249,10 @@ static void readFields(ProcessField* fields, int* flags, const char* line) {
    int i, j;
    *flags = 0;
    for (j = 0, i = 0; i < Platform_numberOfFields && ids[i]; i++) {
-      // This "+1" is for compatibility with the older enum format.
-      int id = atoi(ids[i]) + 1;
-      if (id > 0 && Process_fields[id].name && id < Platform_numberOfFields) {
-         fields[j] = id;
-         *flags |= Process_fields[id].flags;
+      int idx = toFieldIndex(ids[i]);
+      if (idx != -1) {
+         fields[j] = idx;
+         *flags |= Process_fields[idx].flags;
          j++;
       }
    }
@@ -163,6 +260,30 @@ static void readFields(ProcessField* fields, int* flags, const char* line) {
    String_freeArray(ids);
 }
 
+ScreenSettings* Settings_newScreen(Settings* this, const char* name, const char* line) {
+   ScreenSettings* ss = xCalloc(sizeof(ScreenSettings), 1);
+   ss->name = xStrdup(name);
+   ss->fields = xCalloc(Platform_numberOfFields+1, sizeof(ProcessField));
+   ss->flags = 0;
+   ss->direction = 1;
+   ss->treeView = 0;
+   readFields(ss->fields, &(ss->flags), line);
+   ss->sortKey = ss->fields[0];
+   this->screens[this->nScreens] = ss;
+   this->nScreens++;
+   this->screens = xRealloc(this->screens, sizeof(ScreenSettings*) * (this->nScreens + 1));
+   this->screens[this->nScreens] = NULL;
+   return ss;
+}
+
+static void Settings_defaultScreens(Settings* this) {
+   for (unsigned int i = 0; i < Platform_numberOfDefaultScreens; i++) {
+      ScreenDefaults* defaults = &Platform_defaultScreens[i];
+      Settings_newScreen(this, defaults->name, defaults->columns);
+      this->screens[i]->sortKey = toFieldIndex(defaults->sortKey);
+   }
+}
+
 static bool Settings_read(Settings* this, const char* fileName) {
    FILE* fd;
    
@@ -174,6 +295,9 @@ static bool Settings_read(Settings* this, const char* fileName) {
    
    bool didReadMeters = false;
    bool didReadFields = false;
+   ProcessField* legacyFields = xCalloc(Platform_numberOfFields+1, sizeof(ProcessField));
+   int legacyFlags;
+   bool legacyFieldsRead = false;
    for (;;) {
       char* line = String_readLine(fd);
       if (!line) {
@@ -187,15 +311,8 @@ static bool Settings_read(Settings* this, const char* fileName) {
          continue;
       }
       if (String_eq(option[0], "fields")) {
-         readFields(this->fields, &(this->flags), option[1]);
-         didReadFields = true;
-      } else if (String_eq(option[0], "sort_key")) {
-         // This "+1" is for compatibility with the older enum format.
-         this->sortKey = atoi(option[1]) + 1;
-      } else if (String_eq(option[0], "sort_direction")) {
-         this->direction = atoi(option[1]);
-      } else if (String_eq(option[0], "tree_view")) {
-         this->treeView = atoi(option[1]);
+         readFields(legacyFields, &legacyFlags, option[1]);
+         legacyFieldsRead = true;
       } else if (String_eq(option[0], "hide_threads")) {
          this->hideThreads = atoi(option[1]);
       } else if (String_eq(option[0], "hide_kernel_threads")) {
@@ -216,6 +333,8 @@ static bool Settings_read(Settings* this, const char* fileName) {
          this->highlightThreads = atoi(option[1]);
       } else if (String_eq(option[0], "header_margin")) {
          this->headerMargin = atoi(option[1]);
+      } else if (String_eq(option[0], "screen_tabs")) {
+         this->screenTabs = atoi(option[1]);
       } else if (String_eq(option[0], "expand_system_time")) {
          // Compatibility option.
          this->detailedCPUTime = atoi(option[1]);
@@ -244,40 +363,62 @@ static bool Settings_read(Settings* this, const char* fileName) {
       } else if (String_eq(option[0], "right_meter_modes")) {
          Settings_readMeterModes(this, option[1], 1);
          didReadMeters = true;
+      } else if (strncmp(option[0], "screen:", 7) == 0) {
+         Settings_newScreen(this, option[0] + 7, option[1]);
+         didReadFields = true;
+      } else if (String_eq(option[0], ".tree_view")) {
+         if (this->nScreens > 0) {
+            this->screens[this->nScreens - 1]->treeView = atoi(option[1]);
+         }
+      } else if (String_eq(option[0], ".sort_direction")) {
+         if (this->nScreens > 0) {
+            this->screens[this->nScreens - 1]->direction = atoi(option[1]);
+         }
+      } else if (String_eq(option[0], ".sort_key")) {
+         if (this->nScreens > 0) {
+            this->screens[this->nScreens - 1]->sortKey = toFieldIndex(option[1]);
+         }
       }
       String_freeArray(option);
    }
    fclose(fd);
+   if (this->nScreens == 0) {
+      Settings_defaultScreens(this);
+      if (legacyFieldsRead) {
+         didReadFields = true;
+         free(this->screens[0]->fields);
+         this->screens[0]->fields = legacyFields;
+         this->screens[0]->flags = legacyFlags;
+      }
+   }
    if (!didReadMeters) {
       Settings_defaultMeters(this);
    }
    return didReadFields;
 }
 
-static void writeFields(FILE* fd, ProcessField* fields, const char* name) {
-   fprintf(fd, "%s=", name);
+static void writeFields(FILE* fd, ProcessField* fields, bool byName) {
    const char* sep = "";
    for (int i = 0; fields[i]; i++) {
+      if (byName) {
+         fprintf(fd, "%s%s", sep, toFieldName(fields[i]));
+      } else {
          // This " - 1" is for compatibility with the older enum format.
          fprintf(fd, "%s%d", sep, (int) fields[i] - 1);
+      }
       sep = " ";
    }
    fprintf(fd, "\n");
 }
 
-static void writeMeters(Settings* this, FILE* fd, int column) {
-   const char* sep = "";
-   for (int i = 0; i < this->columns[column].len; i++) {
-      fprintf(fd, "%s%s", sep, this->columns[column].names[i]);
-      sep = " ";
-   }
-   fprintf(fd, "\n");
+static void writeMeters(Settings* this, FILE* fd, int side) {
+   writeList(fd, this->meterColumns[side].names, this->meterColumns[side].len);
 }
 
-static void writeMeterModes(Settings* this, FILE* fd, int column) {
+static void writeMeterModes(Settings* this, FILE* fd, int side) {
    const char* sep = "";
-   for (int i = 0; i < this->columns[column].len; i++) {
-      fprintf(fd, "%s%d", sep, this->columns[column].modes[i]);
+   for (int i = 0; i < this->meterColumns[side].len; i++) {
+      fprintf(fd, "%s%d", sep, this->meterColumns[side].modes[i]);
       sep = " ";
    }
    fprintf(fd, "\n");
@@ -295,10 +436,7 @@ bool Settings_write(Settings* this) {
    }
    fprintf(fd, "# Beware! This file is rewritten by htop when settings are changed in the interface.\n");
    fprintf(fd, "# The parser is also very primitive, and not human-friendly.\n");
-   writeFields(fd, this->fields, "fields");
-   // This "-1" is for compatibility with the older enum format.
-   fprintf(fd, "sort_key=%d\n", (int) this->sortKey-1);
-   fprintf(fd, "sort_direction=%d\n", (int) this->direction);
+   fprintf(fd, "fields="); writeFields(fd, this->screens[0]->fields, false);
    fprintf(fd, "hide_threads=%d\n", (int) this->hideThreads);
    fprintf(fd, "hide_kernel_threads=%d\n", (int) this->hideKernelThreads);
    fprintf(fd, "hide_userland_threads=%d\n", (int) this->hideUserlandThreads);
@@ -308,8 +446,8 @@ bool Settings_write(Settings* this) {
    fprintf(fd, "highlight_base_name=%d\n", (int) this->highlightBaseName);
    fprintf(fd, "highlight_megabytes=%d\n", (int) this->highlightMegabytes);
    fprintf(fd, "highlight_threads=%d\n", (int) this->highlightThreads);
-   fprintf(fd, "tree_view=%d\n", (int) this->treeView);
    fprintf(fd, "header_margin=%d\n", (int) this->headerMargin);
+   fprintf(fd, "screen_tabs=%d\n", (int) this->screenTabs);
    fprintf(fd, "detailed_cpu_time=%d\n", (int) this->detailedCPUTime);
    fprintf(fd, "cpu_count_from_zero=%d\n", (int) this->countCPUsFromZero);
    fprintf(fd, "update_process_names=%d\n", (int) this->updateProcessNames);
@@ -320,6 +458,23 @@ bool Settings_write(Settings* this) {
    fprintf(fd, "left_meter_modes="); writeMeterModes(this, fd, 0);
    fprintf(fd, "right_meters="); writeMeters(this, fd, 1);
    fprintf(fd, "right_meter_modes="); writeMeterModes(this, fd, 1);
+
+   // Legacy compatibility with older versions of htop
+   fprintf(fd, "tree_view=%d\n", (int) this->screens[0]->treeView);
+   // This "-1" is for compatibility with the older enum format.
+   fprintf(fd, "sort_key=%d\n", (int) this->screens[0]->sortKey-1);
+   fprintf(fd, "sort_direction=%d\n", (int) this->screens[0]->direction);
+
+   if (this->screens && this->screens[0]) {
+      for (unsigned int i = 0; i < this->nScreens; i++) {
+         ScreenSettings* ss = this->screens[i];
+         fprintf(fd, "screen:%s=", ss->name);
+         writeFields(fd, ss->fields, true);
+         fprintf(fd, ".tree_view=%d\n", (int) ss->treeView);
+         fprintf(fd, ".sort_key=%s\n", toFieldName(ss->sortKey));
+         fprintf(fd, ".sort_direction=%d\n", (int) ss->direction);
+      }
+   }
    fclose(fd);
    return true;
 }
@@ -328,14 +483,11 @@ Settings* Settings_new(int cpuCount) {
   
    Settings* this = xCalloc(1, sizeof(Settings));
 
-   this->sortKey = PERCENT_CPU;
-   this->direction = 1;
    this->hideThreads = false;
    this->shadowOtherUsers = false;
    this->showThreadNames = false;
    this->hideKernelThreads = false;
    this->hideUserlandThreads = false;
-   this->treeView = false;
    this->highlightBaseName = false;
    this->highlightMegabytes = false;
    this->detailedCPUTime = false;
@@ -345,15 +497,8 @@ Settings* Settings_new(int cpuCount) {
    this->showProgramPath = true;
    this->highlightThreads = true;
    
-   this->fields = xCalloc(Platform_numberOfFields+1, sizeof(ProcessField));
-   // TODO: turn 'fields' into a Vector,
-   // (and ProcessFields into proper objects).
-   this->flags = 0;
-   ProcessField* defaults = Platform_defaultFields;
-   for (int i = 0; defaults[i]; i++) {
-      this->fields[i] = defaults[i];
-      this->flags |= Process_fields[defaults[i]].flags;
-   }
+   this->screens = xCalloc(sizeof(ScreenSettings*), 1);
+   this->nScreens = 0;
 
    char* legacyDotfile = NULL;
    char* rcfile = getenv("HTOPRC");
@@ -414,15 +559,21 @@ Settings* Settings_new(int cpuCount) {
    }
    if (!ok) {
       Settings_defaultMeters(this);
+      Settings_defaultScreens(this);
       this->hideKernelThreads = true;
       this->highlightMegabytes = true;
       this->highlightThreads = true;
       this->headerMargin = true;
+      this->screenTabs = true;
    }
+
+   this->ssIndex = 0;
+   this->ss = this->screens[this->ssIndex];
+
    return this;
 }
 
-void Settings_invertSortOrder(Settings* this) {
+void ScreenSettings_invertSortOrder(ScreenSettings* this) {
    if (this->direction == 1)
       this->direction = -1;
    else

Settings.h

@@ -14,29 +14,44 @@ in the source distribution for its full text.
 #include "Process.h"
 #include <stdbool.h>
 
+typedef struct {
+   const char* name;
+   const char* columns;
+   const char* sortKey;
+} ScreenDefaults;
+
 typedef struct {
    int len;
    char** names;
    int* modes;
 } MeterColumnSettings;
 
+typedef struct {
+   char* name;
+   ProcessField* fields;
+   int flags;
+   int direction;
+   ProcessField sortKey;
+   bool treeView;
+} ScreenSettings;
+
 typedef struct Settings_ {
    char* filename;
    
-   MeterColumnSettings columns[2];
+   MeterColumnSettings meterColumns[2];
+
+   ScreenSettings** screens;
+   unsigned int nScreens;
+   unsigned int ssIndex;
+   ScreenSettings* ss;
 
-   ProcessField* fields;
-   int flags;
    int colorScheme;
    int delay;
 
    int cpuCount;
-   int direction;
-   ProcessField sortKey;
 
    bool countCPUsFromZero;
    bool detailedCPUTime;
-   bool treeView;
    bool showProgramPath;
    bool hideThreads;
    bool shadowOtherUsers;
@@ -49,6 +64,7 @@ typedef struct Settings_ {
    bool updateProcessNames;
    bool accountGuestInCPUMeter;
    bool headerMargin;
+   bool screenTabs;
 
    bool changed;
 } Settings;
@@ -58,12 +74,18 @@ typedef struct Settings_ {
 #endif
 
 
+/*
+
+*/
+
 void Settings_delete(Settings* this);
 
+ScreenSettings* Settings_newScreen(Settings* this, const char* name, const char* line);
+
 bool Settings_write(Settings* this);
 
 Settings* Settings_new(int cpuCount);
 
-void Settings_invertSortOrder(Settings* this);
+void ScreenSettings_invertSortOrder(ScreenSettings* this);
 
 #endif

StringUtils.c

@@ -27,8 +27,8 @@ in the source distribution for its full text.
  */
 
 char* String_cat(const char* s1, const char* s2) {
-   int l1 = strlen(s1);
-   int l2 = strlen(s2);
+   size_t l1 = strlen(s1);
+   size_t l2 = strlen(s2);
    char* out = xMalloc(l1 + l2 + 1);
    strncpy(out, s1, l1);
    strncpy(out + l1, s2, l2 + 1);
@@ -39,7 +39,7 @@ char* String_trim(const char* in) {
    while (in[0] == ' ' || in[0] == '\t' || in[0] == '\n') {
       in++;
    }
-   int len = strlen(in);
+   size_t len = strlen(in);
    while (len > 0 && (in[len-1] == ' ' || in[len-1] == '\t' || in[len-1] == '\n')) {
       len--;
    }
@@ -80,7 +80,7 @@ char** String_split(const char* s, char sep, int* n) {
       s += size + 1;
    }
    if (s[0] != '\0') {
-      int size = strlen(s);
+      size_t size = strlen(s);
       char* token = xMalloc(size + 1);
       strncpy(token, s, size + 1);
       out[ctr] = token;

TraceScreen.c

@@ -86,7 +86,7 @@ void TraceScreen_draw(InfoScreen* this) {
    mvhline(0, 0, ' ', COLS);
    mvprintw(0, 0, "Trace of process %d - %s", this->process->pid, this->process->comm);
    attrset(CRT_colors[DEFAULT_COLOR]);
-   IncSet_drawBar(this->inc);
+   IncSet_drawBar(this->inc, CRT_colors[FUNCTION_BAR]);
 }
 
 bool TraceScreen_forkTracer(TraceScreen* this) {

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.65)
-AC_INIT([htop],[2.2.0],[hisham@gobolinux.org])
+AC_INIT([htop],[3.0.0beta5],[hisham@gobolinux.org])
 
 SOURCE_DATE_EPOCH="${SOURCE_DATE_EPOCH:-$(date +%s)}"
 year=$(date -u -d "@$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u "+%Y")
@@ -245,6 +245,10 @@ if test "$my_htop_platform" = "solaris"; then
    AC_CHECK_LIB([kstat], [kstat_open], [], [missing_libraries="$missing_libraries libkstat"])
    AC_CHECK_LIB([proc], [Pgrab_error], [], [missing_libraries="$missing_libraries libproc"])
    AC_CHECK_LIB([malloc], [free], [], [missing_libraries="$missing_libraries libmalloc"])
+   AC_CHECK_HEADERS([err.h],[:],[
+      missing_headers="$missing_headers err.h"
+      AC_MSG_ERROR([You appear to be on Solaris 10, or very early Solaris Express, which are currently unsupported.])
+   ])
 fi
 
 AC_ARG_ENABLE(linux_affinity, [AS_HELP_STRING([--enable-linux-affinity], [enable Linux sched_setaffinity and sched_getaffinity for affinity support, disables hwloc])], ,enable_linux_affinity="yes")
@@ -281,7 +285,53 @@ then
    AC_DEFINE(HAVE_SETUID_ENABLED, 1, [Define if setuid support should be enabled.])
 fi
 
-AC_ARG_ENABLE(delayacct, [AS_HELP_STRING([--enable-delayacct], [enable Linux delay accounting])],, enable_delayacct="no")
+AC_ARG_ENABLE(perfcounters, [AS_HELP_STRING([--enable-perfcounters], [enable hardware performance counters])],, enable_perfcounters="yes")
+if test "x$enable_perfcounters" = "xyes" -a "$my_htop_platform" = "linux"
+then
+   AC_DEFINE(HAVE_PERFCOUNTERS, 1, [Define if hardware performance counter support should be enabled.])
+
+   AC_CHECK_HEADERS([linux/perf_counter.h], [have_perf_counter=yes],
+                                            [have_perf_counter=no])
+   
+   AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes],
+                                          [have_perf_event=no])
+   
+   if test "x${have_perf_counter}" = xno -a "x${have_perf_event}" = xno; then
+      os=`uname -s -r`
+      AC_MSG_FAILURE([
+     ------------------------------------------------------------
+      Could not locate linux/perf_count.h or linux/perf_event.h.
+      Are performance counters supported on this machine?
+      Linux 2.6.31+ is required.
+      uname reports: ${os}
+     ------------------------------------------------------------])
+   fi
+   
+   # Check for hardware architecture
+   no_target=yes
+   AC_MSG_CHECKING([hardware])
+   hw=`uname -m`
+   case $hw in
+      x86_64 | i386 | i686 ) :
+         AC_MSG_RESULT([x86])
+         AC_DEFINE([TARGET_X86], [1], [Define to 1 if the target is x86.])
+         no_target=no
+         ;;
+      unknown ) :
+         AC_MSG_RESULT([unknown])
+         AC_MSG_WARN([Could not detect architecture])
+         ;;
+      * ) :
+         AC_MSG_RESULT([$hw])
+         ;;
+   esac
+   
+   if test x$no_target = xyes; then
+      AC_DEFINE([NOTARGET], [1], [Define to 1 when no specific target is supported.])
+   fi
+fi
+
+AC_ARG_ENABLE(delayacct, [AS_HELP_STRING([--enable-delayacct], [enable linux delay accounting])],, enable_delayacct="no")
 if test "x$enable_delayacct" = xyes
 then
    m4_ifdef([PKG_PROG_PKG_CONFIG], [
@@ -292,6 +342,8 @@ then
       LIBS="$LIBS $LIBNL3_LIBS $LIBNL3GENL_LIBS"
       AC_DEFINE(HAVE_DELAYACCT, 1, [Define if delay accounting support should be enabled.])
    ], [
+      pkg_m4_absent=1
+      m4_warning([configure is generated without pkg.m4. 'make dist' target will be disabled.])
       AC_MSG_ERROR([htop on Linux requires pkg-config for checking delayacct requirements. Please install pkg-config and run ./autogen.sh to rebuild the configure script.])
    ])
 fi

darwin/DarwinProcessList.c

@@ -21,37 +21,6 @@ in the source distribution for its full text.
 #include <sys/sysctl.h>
 #include <stdbool.h>
 
-struct kern {
-    short int version[3];
-};
-
-void GetKernelVersion(struct kern *k) {
-   static short int version_[3] = {0};
-   if (!version_[0]) {
-      // just in case it fails someday
-      version_[0] = version_[1] = version_[2] = -1;
-      char str[256] = {0};
-      size_t size = sizeof(str);
-      int ret = sysctlbyname("kern.osrelease", str, &size, NULL, 0);
-      if (ret == 0) sscanf(str, "%hd.%hd.%hd", &version_[0], &version_[1], &version_[2]);
-    }
-    memcpy(k->version, version_, sizeof(version_));
-}
-
-/* compare the given os version with the one installed returns:
-0 if equals the installed version
-positive value if less than the installed version
-negative value if more than the installed version
-*/
-int CompareKernelVersion(short int major, short int minor, short int component) {
-    struct kern k;
-    GetKernelVersion(&k);
-    if ( k.version[0] !=  major) return k.version[0] - major;
-    if ( k.version[1] !=  minor) return k.version[1] - minor;
-    if ( k.version[2] !=  component) return k.version[2] - component;
-    return 0;
-}
-
 /*{
 #include "ProcessList.h"
 #include <mach/mach_host.h>
@@ -71,6 +40,38 @@ typedef struct DarwinProcessList_ {
 
 }*/
 
+typedef struct kern {
+   short int version[3];
+} kern_;
+
+static void getKernelVersion(struct kern *k) {
+   static short int version_[3] = {0};
+   if (!version_[0]) {
+      // just in case it fails someday
+      version_[0] = version_[1] = version_[2] = -1;
+      char str[256] = {0};
+      size_t size = sizeof(str);
+      int ret = sysctlbyname("kern.osrelease", str, &size, NULL, 0);
+      if (ret == 0) sscanf(str, "%hd.%hd.%hd", &version_[0], &version_[1], &version_[2]);
+   }
+   memcpy(k->version, version_, sizeof(version_));
+}
+
+static int compareKernelVersion(short int major, short int minor, short int component) {
+   /*
+   compare the given os version with the one installed returns:
+   0 if equals the installed version
+   positive value if less than the installed version
+   negative value if more than the installed version
+   */
+   struct kern k;
+   getKernelVersion(&k);
+   if ( k.version[0] != major) return k.version[0] - major;
+   if ( k.version[1] != minor) return k.version[1] - minor;
+   if ( k.version[2] != component) return k.version[2] - component;
+   return 0;
+}
+
 void ProcessList_getHostInfo(host_basic_info_data_t *p) {
    mach_msg_type_number_t info_size = HOST_BASIC_INFO_COUNT;
 
@@ -205,7 +206,7 @@ void ProcessList_goThroughEntries(ProcessList* super) {
       DarwinProcess_setFromLibprocPidinfo(proc, dpl);
 
       // Disabled for High Sierra due to bug in macOS High Sierra
-       bool isScanThreadSupported  = ! ( CompareKernelVersion(17, 0, 0) >= 0 && CompareKernelVersion(17, 5, 0) < 0);
+      bool isScanThreadSupported  = ! ( compareKernelVersion(17, 0, 0) >= 0 && compareKernelVersion(17, 5, 0) < 0);
 
       if (isScanThreadSupported){
          DarwinProcess_scanThreads(proc);

darwin/DarwinProcessList.h

@@ -26,6 +26,7 @@ typedef struct DarwinProcessList_ {
 } DarwinProcessList;
 
 
+
 void ProcessList_getHostInfo(host_basic_info_data_t *p);
 
 void ProcessList_freeCPULoadInfo(processor_cpu_load_info_t *p);

darwin/Platform.c

@@ -25,13 +25,26 @@ in the source distribution for its full text.
 #include "CPUMeter.h"
 #include "BatteryMeter.h"
 #include "DarwinProcess.h"
+
+typedef enum DarwinProcessFields {
+   LAST_PROCESSFIELD = 100,
+} DarwinProcessField;
+
 }*/
 
 #ifndef CLAMP
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
 
 const SignalItem Platform_signals[] = {
    { .name = " 0 Cancel",    .number =  0 },
@@ -97,7 +110,7 @@ ProcessFieldData Process_fields[] = {
    [TIME] = { .name = "TIME", .title = "  TIME+  ", .description = "Total time the process has spent in user and system time", .flags = 0, },
    [NLWP] = { .name = "NLWP", .title = "NLWP ", .description = "Number of threads in the process", .flags = 0, },
    [TGID] = { .name = "TGID", .title = "   TGID ", .description = "Thread group ID (i.e. process ID)", .flags = 0, },
-   [100] = { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
+   [LAST_PROCESSFIELD] = { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
 };
 
 MeterClass* Platform_meterTypes[] = {

darwin/Platform.h

@@ -16,11 +16,18 @@ in the source distribution for its full text.
 #include "BatteryMeter.h"
 #include "DarwinProcess.h"
 
+typedef enum DarwinProcessFields {
+   LAST_PROCESSFIELD = 100,
+} DarwinProcessField;
+
+
 #ifndef CLAMP
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-extern ProcessField Platform_defaultFields[];
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
 
 extern const SignalItem Platform_signals[];
 

dragonflybsd/DragonFlyBSDProcess.c

@@ -138,14 +138,14 @@ void DragonFlyBSDProcess_writeField(Process* this, RichString* str, ProcessField
 long DragonFlyBSDProcess_compare(const void* v1, const void* v2) {
    DragonFlyBSDProcess *p1, *p2;
    Settings *settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   if (settings->ss->direction == 1) {
       p1 = (DragonFlyBSDProcess*)v1;
       p2 = (DragonFlyBSDProcess*)v2;
    } else {
       p2 = (DragonFlyBSDProcess*)v1;
       p1 = (DragonFlyBSDProcess*)v2;
    }
-   switch ((int) settings->sortKey) {
+   switch ((int) settings->ss->sortKey) {
    // add Platform-specific fields here
    case JID:
       return (p1->jid - p2->jid);

dragonflybsd/Platform.c

@@ -40,7 +40,15 @@ extern ProcessFieldData Process_fields[];
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
 
 int Platform_numberOfFields = LAST_PROCESSFIELD;
 

dragonflybsd/Platform.h

@@ -21,7 +21,9 @@ extern ProcessFieldData Process_fields[];
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-extern ProcessField Platform_defaultFields[];
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
 
 extern int Platform_numberOfFields;
 

freebsd/FreeBSDProcess.c

@@ -136,14 +136,14 @@ void FreeBSDProcess_writeField(Process* this, RichString* str, ProcessField fiel
 long FreeBSDProcess_compare(const void* v1, const void* v2) {
    FreeBSDProcess *p1, *p2;
    Settings *settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   if (settings->ss->direction == 1) {
       p1 = (FreeBSDProcess*)v1;
       p2 = (FreeBSDProcess*)v2;
    } else {
       p2 = (FreeBSDProcess*)v1;
       p1 = (FreeBSDProcess*)v2;
    }
-   switch ((int) settings->sortKey) {
+   switch ((int) settings->ss->sortKey) {
    // add FreeBSD-specific fields here
    case JID:
       return (p1->jid - p2->jid);

freebsd/Platform.c

@@ -39,6 +39,16 @@ extern ProcessFieldData Process_fields[];
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
+
 ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
 
 int Platform_numberOfFields = LAST_PROCESSFIELD;

freebsd/Platform.h

@@ -20,6 +20,10 @@ extern ProcessFieldData Process_fields[];
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
+
 extern ProcessField Platform_defaultFields[];
 
 extern int Platform_numberOfFields;

htop.1.in

@@ -85,8 +85,13 @@ Tag or untag a process. Commands that can operate on multiple processes,
 like "kill", will then apply over the list of tagged processes, instead
 of the currently highlighted one.
 .TP
+.B c
+Tag the current process and its children. Commands that can operate on multiple
+processes, like "kill", will then apply over the list of tagged processes,
+instead of the currently highlighted one.
+.TP
 .B U
-Untag all processes (remove all tags added with the Space key).
+Untag all processes (remove all tags added with the Space or c keys).
 .TP
 .B s
 Trace process system calls: if strace(1) is installed, pressing this key

htop.c

@@ -93,7 +93,7 @@ static CommandLineSettings parseArguments(int argc, char** argv) {
 
    int opt, opti=0;
    /* Parse arguments */
-   while ((opt = getopt_long(argc, argv, "hvCst::d:u:p:i", long_opts, &opti))) {
+   while ((opt = getopt_long(argc, argv, "hvCs:td:u:p:i", long_opts, &opti))) {
       if (opt == EOF) break;
       switch (opt) {
          case 'h':
@@ -205,19 +205,19 @@ int main(int argc, char** argv) {
    if (!flags.useColors) 
       settings->colorScheme = COLORSCHEME_MONOCHROME;
    if (flags.treeView)
-      settings->treeView = true;
+      settings->screens[0]->treeView = true;
 
    CRT_init(settings->delay, settings->colorScheme);
    
    MainPanel* panel = MainPanel_new();
    ProcessList_setPanel(pl, (Panel*) panel);
 
-   MainPanel_updateTreeFunctions(panel, settings->treeView);
+   MainPanel_updateTreeFunctions(panel, settings->screens[0]->treeView);
       
    if (flags.sortKey > 0) {
-      settings->sortKey = flags.sortKey;
-      settings->treeView = false;
-      settings->direction = 1;
+      settings->screens[0]->sortKey = flags.sortKey;
+      settings->screens[0]->treeView = false;
+      settings->screens[0]->direction = 1;
    }
    ProcessList_printHeader(pl, Panel_getHeader((Panel*)panel));
 
@@ -237,7 +237,7 @@ int main(int argc, char** argv) {
    millisleep(75);
    ProcessList_scan(pl);
 
-   ScreenManager_run(scr, NULL, NULL);   
+   ScreenManager_run(scr, NULL, NULL, NULL);
    
    attron(CRT_colors[RESET_COLOR]);
    mvhline(LINES-1, 0, ' ', COLS);

htop.desktop

@@ -1,41 +1,9 @@
 [Desktop Entry]
+Type=Application
 Version=1.0
 Name=Htop
-Type=Application
-Comment=Show System Processes
-Comment[ca]=Mostra els processos del sistema
-Comment[de]=Systemprozesse anzeigen
-Comment[en_GB]=Show System Processes
-Comment[es]=Mostrar procesos del sistema
-Comment[fi]=Katsele järjestelmän prosesseja
-Comment[fr]=Affiche les processus système
-Comment[gl]=Mostrar os procesos do sistema.
-Comment[it]=Mostra processi di sistema
-Comment[ko]=시스템 프로세스 보기
-Comment[nb]=Vis systemprosesser
-Comment[nl]=Systeemprocessen tonen
-Comment[nn]=Vis systemprosessar
-Comment[pl]=Pokaż procesy systemowe
-Comment[pt]=Mostrar os Processos do Sistema
-Comment[pt_BR]=Mostra os processos do sistema
-Comment[ru]=Просмотр списка процессов в системе
-Comment[sk]=Zobraziť systémové procesy
-Comment[sl]=Prikaz sistemskih opravil
-Comment[sr]=Приказ системских процеса
-Comment[sr@ijekavian]=Приказ системских процеса
-Comment[sr@ijekavianlatin]=Prikaz sistemskih procesa
-Comment[sr@latin]=Prikaz sistemskih procesa
-Comment[sv]=Visa systemprocesser
-Comment[tr]=Sistem Süreçlerini Göster
-Comment[uk]=Перегляд системних процесів
-Comment[zh_CN]=显示系统进程
-Comment[zh_TW]=顯示系統行程
-Terminal=true
-Exec=htop
-Icon=htop
-Categories=ConsoleOnly;System;
 GenericName=Process Viewer
-GenericName[ca]=Visor de processos
+GenericName[ca]=Visualitzador de processos
 GenericName[de]=Prozessanzeige
 GenericName[en_GB]=Process Viewer
 GenericName[es]=Visor de procesos
@@ -53,13 +21,45 @@ GenericName[pt_BR]=Visualizador de processos
 GenericName[ru]=Монитор процессов
 GenericName[sk]=Prehliadač procesov
 GenericName[sl]=Pregledovalnik opravil
-GenericName[sr]=Приказивач процеса
 GenericName[sr@ijekavian]=Приказивач процеса
 GenericName[sr@ijekavianlatin]=Prikazivač procesa
 GenericName[sr@latin]=Prikazivač procesa
+GenericName[sr]=Приказивач процеса
 GenericName[sv]=Processvisning
 GenericName[tr]=Süreç Görüntüleyici
 GenericName[uk]=Перегляд процесів
 GenericName[zh_CN]=进程查看器
 GenericName[zh_TW]=行程檢視器
+Comment=Show System Processes
+Comment[ca]=Visualitzeu els processos del sistema
+Comment[de]=Systemprozesse anzeigen
+Comment[en_GB]=Show System Processes
+Comment[es]=Mostrar procesos del sistema
+Comment[fi]=Katsele järjestelmän prosesseja
+Comment[fr]=Affiche les processus système
+Comment[gl]=Mostrar os procesos do sistema.
+Comment[it]=Mostra processi di sistema
+Comment[ko]=시스템 프로세스 보기
+Comment[nb]=Vis systemprosesser
+Comment[nl]=Systeemprocessen tonen
+Comment[nn]=Vis systemprosessar
+Comment[pl]=Pokaż procesy systemowe
+Comment[pt]=Mostrar os Processos do Sistema
+Comment[pt_BR]=Mostra os processos do sistema
+Comment[ru]=Просмотр списка процессов в системе
+Comment[sk]=Zobraziť systémové procesy
+Comment[sl]=Prikaz sistemskih opravil
+Comment[sr@ijekavian]=Приказ системских процеса
+Comment[sr@ijekavianlatin]=Prikaz sistemskih procesa
+Comment[sr@latin]=Prikaz sistemskih procesa
+Comment[sr]=Приказ системских процеса
+Comment[sv]=Visa systemprocesser
+Comment[tr]=Sistem Süreçlerini Göster
+Comment[uk]=Перегляд системних процесів
+Comment[zh_CN]=显示系统进程
+Comment[zh_TW]=顯示系統行程
+Icon=htop
+Exec=htop
+Terminal=true
+Categories=System;Monitor;ConsoleOnly;
 Keywords=system;process;task

linux/LinuxProcess.c

@@ -15,14 +15,28 @@ in the source distribution for its full text.
 #include <unistd.h>
 #include <string.h>
 #include <sys/syscall.h>
+#include <time.h>
 
 /*{
 
-#define PROCESS_FLAG_LINUX_IOPRIO   0x0100
-#define PROCESS_FLAG_LINUX_OPENVZ   0x0200
-#define PROCESS_FLAG_LINUX_VSERVER  0x0400
-#define PROCESS_FLAG_LINUX_CGROUP   0x0800
-#define PROCESS_FLAG_LINUX_OOM      0x1000
+#include "PerfCounter.h"
+
+#define PROCESS_FLAG_LINUX_IOPRIO   0x0100L
+#define PROCESS_FLAG_LINUX_OPENVZ   0x0200L
+#define PROCESS_FLAG_LINUX_VSERVER  0x0400L
+#define PROCESS_FLAG_LINUX_CGROUP   0x0800L
+#define PROCESS_FLAG_LINUX_OOM      0x1000L
+
+#define PROCESS_FLAG_LINUX_HPC       0xff0000L
+#define PROCESS_FLAG_LINUX_HPC_CYCLE 0x10000L
+#define PROCESS_FLAG_LINUX_HPC_INSN  0x20000L
+#define PROCESS_FLAG_LINUX_HPC_MISS  0x40000L
+#define PROCESS_FLAG_LINUX_HPC_BMISS 0x80000L
+
+#define PROCESS_FLAG_LINUX_HPC_L1DR   0x100000L
+#define PROCESS_FLAG_LINUX_HPC_L1DW   0x200000L
+#define PROCESS_FLAG_LINUX_HPC_L1DRM  0x400000L
+#define PROCESS_FLAG_LINUX_HPC_L1DWM  0x800000L
 
 typedef enum UnsupportedProcessFields {
    FLAGS = 9,
@@ -86,7 +100,18 @@ typedef enum LinuxProcessFields {
    PERCENT_IO_DELAY = 117,
    PERCENT_SWAP_DELAY = 118,
    #endif
-   LAST_PROCESSFIELD = 119,
+   #ifdef HAVE_PERFCOUNTERS
+   IPC = 119,
+   MCYCLE = 120,
+   MINSTR = 121,
+   PERCENT_MISS = 122,
+   PERCENT_BMISS = 123,
+   L1DREADS = 124,
+   L1DRMISSES = 125,
+   L1DWRITES = 126,
+   L1DWMISSES = 127,
+   #endif
+   LAST_PROCESSFIELD = 128,
 } LinuxProcessField;
 
 #include "IOPriority.h"
@@ -106,6 +131,7 @@ typedef struct LinuxProcess_ {
    long m_drs;
    long m_lrs;
    long m_dt;
+   unsigned long long starttime;
    #ifdef HAVE_TASKSTATS
    unsigned long long io_rchar;
    unsigned long long io_wchar;
@@ -140,10 +166,29 @@ typedef struct LinuxProcess_ {
    float blkio_delay_percent;
    float swapin_delay_percent;
    #endif
+   #ifdef HAVE_PERFCOUNTERS
+   PerfCounter* cycleCounter;
+   PerfCounter* insnCounter;
+   PerfCounter* missCounter;
+   PerfCounter* brCounter;
+   PerfCounter* l1drCounter;
+   PerfCounter* l1drmCounter;
+   PerfCounter* l1dwCounter;
+   PerfCounter* l1dwmCounter;
+   float ipc;
+   float mcycle;
+   float minstr;
+   float pMiss;
+   float pBMiss;
+   float l1dr;
+   float l1drm;
+   float l1dw;
+   float l1dwm;
+   #endif
 } LinuxProcess;
 
 #ifndef Process_isKernelThread
-#define Process_isKernelThread(_process) ((LinuxProcess*)(_process)->isKernelThread)
+#define Process_isKernelThread(_process) (((LinuxProcess*)(_process))->isKernelThread)
 #endif
 
 #ifndef Process_isUserlandThread
@@ -152,6 +197,8 @@ typedef struct LinuxProcess_ {
 
 }*/
 
+long long btime; /* semi-global */
+
 ProcessFieldData Process_fields[] = {
    [0] = { .name = "", .title = NULL, .description = NULL, .flags = 0, },
    [PID] = { .name = "PID", .title = "    PID ", .description = "Process/thread ID", .flags = 0, },
@@ -231,9 +278,20 @@ ProcessFieldData Process_fields[] = {
    [OOM] = { .name = "OOM", .title = "    OOM ", .description = "OOM (Out-of-Memory) killer score", .flags = PROCESS_FLAG_LINUX_OOM, },
    [IO_PRIORITY] = { .name = "IO_PRIORITY", .title = "IO ", .description = "I/O priority", .flags = PROCESS_FLAG_LINUX_IOPRIO, },
 #ifdef HAVE_DELAYACCT
-   [PERCENT_CPU_DELAY] = { .name = "PERCENT_CPU_DELAY", .title = "CPUD% ", .description = "CPU delay %", .flags = 0, },
+   [PERCENT_CPU_DELAY] = { .name = "PERCENT_CPU_DELAY", .title = "CPD% ", .description = "CPU delay %", .flags = 0, },
    [PERCENT_IO_DELAY] = { .name = "PERCENT_IO_DELAY", .title = "IOD% ", .description = "Block I/O delay %", .flags = 0, },
-   [PERCENT_SWAP_DELAY] = { .name = "PERCENT_SWAP_DELAY", .title = "SWAPD% ", .description = "Swapin delay %", .flags = 0, },
+   [PERCENT_SWAP_DELAY] = { .name = "PERCENT_SWAP_DELAY", .title = "SWD% ", .description = "Swapin delay %", .flags = 0, },
+#endif
+#ifdef HAVE_PERFCOUNTERS
+   [IPC] = { .name = "IPC", .title = "   IPC ", .description = "Executed instructions per cycle", .flags = PROCESS_FLAG_LINUX_HPC_CYCLE | PROCESS_FLAG_LINUX_HPC_INSN, },
+   [MCYCLE] = { .name = "MCYCLE", .title = "  Mcycle ", .description = "Cycles (millions)", .flags = PROCESS_FLAG_LINUX_HPC_CYCLE, },
+   [MINSTR] = { .name = "MINSTR", .title = "  Minstr ", .description = "Instructions (millions)", .flags = PROCESS_FLAG_LINUX_HPC_INSN, },
+   [PERCENT_MISS] = { .name = "PERCENT_MISS", .title = "MIS% ", .description = "Cache misses per 100 instructions", .flags = PROCESS_FLAG_LINUX_HPC_MISS | PROCESS_FLAG_LINUX_HPC_INSN, },
+   [PERCENT_BMISS] = { .name = "PERCENT_BMISS", .title = "BrM% ", .description = "Branch misprediction per 100 instructions", .flags = PROCESS_FLAG_LINUX_HPC_BMISS | PROCESS_FLAG_LINUX_HPC_INSN, },
+   [L1DREADS] = { .name = "L1DREADS", .title =     "  L1Dread ", .description = "L1 data cache: reads (thousands)", .flags = PROCESS_FLAG_LINUX_HPC_L1DR, },
+   [L1DRMISSES] = { .name = "L1DRMISSES", .title = "   R miss ", .description = "L1 data cache: reads misses (thousands)", .flags = PROCESS_FLAG_LINUX_HPC_L1DRM, },
+   [L1DWRITES] = { .name = "L1DWRITES", .title =   " L1Dwrite ", .description = "L1D data cache: writes (thousands)", .flags = PROCESS_FLAG_LINUX_HPC_L1DW, },
+   [L1DWMISSES] = { .name = "L1DWMISSES", .title = "   W miss ", .description = "L1D data cache: write misses (thousands)", .flags = PROCESS_FLAG_LINUX_HPC_L1DWM, },
 #endif
    [LAST_PROCESSFIELD] = { .name = "*** report bug! ***", .title = NULL, .description = NULL, .flags = 0, },
 };
@@ -274,6 +332,10 @@ void Process_delete(Object* cast) {
    Process_done((Process*)cast);
 #ifdef HAVE_CGROUP
    free(this->cgroup);
+#endif
+#ifdef HAVE_PERFCOUNTERS
+   PerfCounter_delete(this->cycleCounter);
+   PerfCounter_delete(this->insnCounter);
 #endif
    free(this->ttyDevice);
    free(this);
@@ -307,14 +369,43 @@ bool LinuxProcess_setIOPriority(LinuxProcess* this, IOPriority ioprio) {
    return (LinuxProcess_updateIOPriority(this) == ioprio);
 }
 
-#ifdef HAVE_DELAYACCT
-void LinuxProcess_printDelay(float delay_percent, char* buffer, int n) {
-  if (delay_percent == -1LL) {
-    xSnprintf(buffer, n, " N/A  ");
+#if HAVE_DELAYACCT || HAVE_PERFCOUNTERS
+
+static char* perfFmt[] = {
+   "%6.2f ",
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   "%6.1f ",
+   "%7.1f ",
+   "%8.2f ",
+   "%9.1f ",
+};
+
+static char* perfNA[] = {
+   "   N/A ",
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   NULL,
+   "   N/A ",
+   "    N/A ",
+   "     N/A ",
+   "      N/A ",
+};
+
+static inline void LinuxProcess_printPerfCounter(float val, int len, char* buffer, int n, int* attr) {
+   if (val != -1) {
+      xSnprintf(buffer, n, perfFmt[len], val);
    } else {
-    xSnprintf(buffer, n, "%4.1f  ", delay_percent);
+      xSnprintf(buffer, n, perfNA[len]);
+      *attr = CRT_colors[PROCESS_SHADOW];
    }
 }
+
 #endif
 
 void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field) {
@@ -344,6 +435,13 @@ void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field)
    case STIME: Process_printTime(str, lp->stime); return;
    case CUTIME: Process_printTime(str, lp->cutime); return;
    case CSTIME: Process_printTime(str, lp->cstime); return;
+   case STARTTIME: {
+     struct tm date;
+     time_t starttimewall = btime + (lp->starttime / sysconf(_SC_CLK_TCK));
+     (void) localtime_r(&starttimewall, &date);
+     strftime(buffer, n, ((starttimewall > time(NULL) - 86400) ? "%R " : "%b%d "), &date);
+     break;
+   }
    #ifdef HAVE_TASKSTATS
    case RCHAR:  Process_colorNumber(str, lp->io_rchar, coloring); return;
    case WCHAR:  Process_colorNumber(str, lp->io_wchar, coloring); return;
@@ -391,9 +489,20 @@ void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field)
       break;
    }
    #ifdef HAVE_DELAYACCT
-   case PERCENT_CPU_DELAY: LinuxProcess_printDelay(lp->cpu_delay_percent, buffer, n); break;
-   case PERCENT_IO_DELAY: LinuxProcess_printDelay(lp->blkio_delay_percent, buffer, n); break;
-   case PERCENT_SWAP_DELAY: LinuxProcess_printDelay(lp->swapin_delay_percent, buffer, n); break;
+   case PERCENT_CPU_DELAY:  Process_printPercentage(lp->cpu_delay_percent,    buffer, n, &attr); break;
+   case PERCENT_IO_DELAY:   Process_printPercentage(lp->blkio_delay_percent,  buffer, n, &attr); break;
+   case PERCENT_SWAP_DELAY: Process_printPercentage(lp->swapin_delay_percent, buffer, n, &attr); break;
+   #endif
+   #ifdef HAVE_PERFCOUNTERS
+   case PERCENT_MISS:  Process_printPercentage(lp->pMiss,  buffer, n, &attr); break;
+   case PERCENT_BMISS: Process_printPercentage(lp->pBMiss, buffer, n, &attr); break;
+   case IPC:            LinuxProcess_printPerfCounter(lp->ipc,    0, buffer, n, &attr); break;
+   case MCYCLE:         LinuxProcess_printPerfCounter(lp->mcycle, 8, buffer, n, &attr); break;
+   case MINSTR:         LinuxProcess_printPerfCounter(lp->minstr, 8, buffer, n, &attr); break;
+   case L1DREADS:       LinuxProcess_printPerfCounter(lp->l1dr,   9, buffer, n, &attr); break;
+   case L1DRMISSES:     LinuxProcess_printPerfCounter(lp->l1drm,  9, buffer, n, &attr); break;
+   case L1DWRITES:      LinuxProcess_printPerfCounter(lp->l1dw,   9, buffer, n, &attr); break;
+   case L1DWMISSES:     LinuxProcess_printPerfCounter(lp->l1dwm,  9, buffer, n, &attr); break;
    #endif
    default:
       Process_writeField((Process*)this, str, field);
@@ -402,10 +511,12 @@ void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field)
    RichString_append(str, attr, buffer);
 }
 
+#define COMPARE_FIELD(_f) return (p2->_f > p1->_f ? 1 : -1)
+
 long LinuxProcess_compare(const void* v1, const void* v2) {
    LinuxProcess *p1, *p2;
    Settings *settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   if (settings->ss->direction == 1) {
       p1 = (LinuxProcess*)v1;
       p2 = (LinuxProcess*)v2;
    } else {
@@ -413,7 +524,11 @@ long LinuxProcess_compare(const void* v1, const void* v2) {
       p1 = (LinuxProcess*)v2;
    }
    long long diff;
-   switch ((int)settings->sortKey) {
+   switch ((int)settings->ss->sortKey) {
+   case CMAJFLT:
+      return (p2->cmajflt - p1->cmajflt);
+   case CMINFLT:
+      return (p2->cminflt - p1->cminflt);
    case M_DRS:
       return (p2->m_drs - p1->m_drs);
    case M_DT:
@@ -428,6 +543,12 @@ long LinuxProcess_compare(const void* v1, const void* v2) {
    case CUTIME: diff = p2->cutime - p1->cutime; goto test_diff;
    case STIME:  diff = p2->stime - p1->stime; goto test_diff;
    case CSTIME: diff = p2->cstime - p1->cstime; goto test_diff;
+   case STARTTIME: {
+      if (p1->starttime == p2->starttime)
+         return (p1->super.pid - p2->super.pid);
+      else
+         return (p1->starttime - p2->starttime);
+   }
    #ifdef HAVE_TASKSTATS
    case RCHAR:  diff = p2->io_rchar - p1->io_rchar; goto test_diff;
    case WCHAR:  diff = p2->io_wchar - p1->io_wchar; goto test_diff;
@@ -457,12 +578,20 @@ long LinuxProcess_compare(const void* v1, const void* v2) {
    case OOM:
       return (p2->oom - p1->oom);
    #ifdef HAVE_DELAYACCT
-   case PERCENT_CPU_DELAY:
-      return (p2->cpu_delay_percent > p1->cpu_delay_percent ? 1 : -1);
-   case PERCENT_IO_DELAY:
-      return (p2->blkio_delay_percent > p1->blkio_delay_percent ? 1 : -1);
-   case PERCENT_SWAP_DELAY:
-      return (p2->swapin_delay_percent > p1->swapin_delay_percent ? 1 : -1);
+   case PERCENT_CPU_DELAY:  COMPARE_FIELD(cpu_delay_percent);
+   case PERCENT_IO_DELAY:   COMPARE_FIELD(blkio_delay_percent);
+   case PERCENT_SWAP_DELAY: COMPARE_FIELD(swapin_delay_percent);
+   #endif
+   #ifdef HAVE_PERFCOUNTERS
+   case PERCENT_MISS:   COMPARE_FIELD(pMiss);
+   case PERCENT_BMISS:  COMPARE_FIELD(pBMiss);
+   case IPC:            COMPARE_FIELD(ipc);
+   case MCYCLE:         COMPARE_FIELD(mcycle);
+   case MINSTR:         COMPARE_FIELD(minstr);
+   case L1DREADS:       COMPARE_FIELD(l1dr);
+   case L1DRMISSES:     COMPARE_FIELD(l1drm);
+   case L1DWRITES:      COMPARE_FIELD(l1dw);
+   case L1DWMISSES:     COMPARE_FIELD(l1dwm);
    #endif
    case IO_PRIORITY:
       return LinuxProcess_effectiveIOPriority(p1) - LinuxProcess_effectiveIOPriority(p2);
@@ -476,4 +605,3 @@ long LinuxProcess_compare(const void* v1, const void* v2) {
 bool Process_isThread(Process* this) {
    return (Process_isUserlandThread(this) || Process_isKernelThread(this));
 }
-

linux/LinuxProcess.h

@@ -10,11 +10,24 @@ in the source distribution for its full text.
 */
 
 
-#define PROCESS_FLAG_LINUX_IOPRIO   0x0100
-#define PROCESS_FLAG_LINUX_OPENVZ   0x0200
-#define PROCESS_FLAG_LINUX_VSERVER  0x0400
-#define PROCESS_FLAG_LINUX_CGROUP   0x0800
-#define PROCESS_FLAG_LINUX_OOM      0x1000
+#include "PerfCounter.h"
+
+#define PROCESS_FLAG_LINUX_IOPRIO   0x0100L
+#define PROCESS_FLAG_LINUX_OPENVZ   0x0200L
+#define PROCESS_FLAG_LINUX_VSERVER  0x0400L
+#define PROCESS_FLAG_LINUX_CGROUP   0x0800L
+#define PROCESS_FLAG_LINUX_OOM      0x1000L
+
+#define PROCESS_FLAG_LINUX_HPC       0xff0000L
+#define PROCESS_FLAG_LINUX_HPC_CYCLE 0x10000L
+#define PROCESS_FLAG_LINUX_HPC_INSN  0x20000L
+#define PROCESS_FLAG_LINUX_HPC_MISS  0x40000L
+#define PROCESS_FLAG_LINUX_HPC_BMISS 0x80000L
+
+#define PROCESS_FLAG_LINUX_HPC_L1DR   0x100000L
+#define PROCESS_FLAG_LINUX_HPC_L1DW   0x200000L
+#define PROCESS_FLAG_LINUX_HPC_L1DRM  0x400000L
+#define PROCESS_FLAG_LINUX_HPC_L1DWM  0x800000L
 
 typedef enum UnsupportedProcessFields {
    FLAGS = 9,
@@ -78,7 +91,18 @@ typedef enum LinuxProcessFields {
    PERCENT_IO_DELAY = 117,
    PERCENT_SWAP_DELAY = 118,
    #endif
-   LAST_PROCESSFIELD = 119,
+   #ifdef HAVE_PERFCOUNTERS
+   IPC = 119,
+   MCYCLE = 120,
+   MINSTR = 121,
+   PERCENT_MISS = 122,
+   PERCENT_BMISS = 123,
+   L1DREADS = 124,
+   L1DRMISSES = 125,
+   L1DWRITES = 126,
+   L1DWMISSES = 127,
+   #endif
+   LAST_PROCESSFIELD = 128,
 } LinuxProcessField;
 
 #include "IOPriority.h"
@@ -98,6 +122,7 @@ typedef struct LinuxProcess_ {
    long m_drs;
    long m_lrs;
    long m_dt;
+   unsigned long long starttime;
    #ifdef HAVE_TASKSTATS
    unsigned long long io_rchar;
    unsigned long long io_wchar;
@@ -132,6 +157,25 @@ typedef struct LinuxProcess_ {
    float blkio_delay_percent;
    float swapin_delay_percent;
    #endif
+   #ifdef HAVE_PERFCOUNTERS
+   PerfCounter* cycleCounter;
+   PerfCounter* insnCounter;
+   PerfCounter* missCounter;
+   PerfCounter* brCounter;
+   PerfCounter* l1drCounter;
+   PerfCounter* l1drmCounter;
+   PerfCounter* l1dwCounter;
+   PerfCounter* l1dwmCounter;
+   float ipc;
+   float mcycle;
+   float minstr;
+   float pMiss;
+   float pBMiss;
+   float l1dr;
+   float l1drm;
+   float l1dw;
+   float l1dwm;
+   #endif
 } LinuxProcess;
 
 #ifndef Process_isKernelThread
@@ -143,6 +187,8 @@ typedef struct LinuxProcess_ {
 #endif
 
 
+long long btime; /* semi-global */
+
 extern ProcessFieldData Process_fields[];
 
 extern ProcessPidColumn Process_pidColumns[];
@@ -167,15 +213,16 @@ IOPriority LinuxProcess_updateIOPriority(LinuxProcess* this);
 
 bool LinuxProcess_setIOPriority(LinuxProcess* this, IOPriority ioprio);
 
-#ifdef HAVE_DELAYACCT
-void LinuxProcess_printDelay(float delay_percent, char* buffer, int n);
+#if HAVE_DELAYACCT || HAVE_PERFCOUNTERS
+
 #endif
 
 void LinuxProcess_writeField(Process* this, RichString* str, ProcessField field);
 
+#define COMPARE_FIELD(_f) return (p2->_f > p1->_f ? 1 : -1)
+
 long LinuxProcess_compare(const void* v1, const void* v2);
 
 bool Process_isThread(Process* this);
 
-
 #endif

linux/LinuxProcessList.c

@@ -47,6 +47,8 @@ in the source distribution for its full text.
 
 #include "ProcessList.h"
 
+extern long long btime;
+
 typedef struct CPUData_ {
    unsigned long long int totalTime;
    unsigned long long int userTime;
@@ -111,7 +113,7 @@ typedef struct LinuxProcessList_ {
 #endif
 
 #ifndef PROC_LINE_LENGTH
-#define PROC_LINE_LENGTH 512
+#define PROC_LINE_LENGTH 4096
 #endif
 
 }*/
@@ -230,8 +232,8 @@ static void LinuxProcessList_initNetlinkSocket(LinuxProcessList* this) {
 ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
    LinuxProcessList* this = xCalloc(1, sizeof(LinuxProcessList));
    ProcessList* pl = &(this->super);
-   ProcessList_init(pl, Class(LinuxProcess), usersTable, pidWhiteList, userId);
 
+   ProcessList_init(pl, Class(LinuxProcess), usersTable, pidWhiteList, userId);
    LinuxProcessList_initTtyDrivers(this);
 
    #ifdef HAVE_DELAYACCT
@@ -243,13 +245,19 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
    if (file == NULL) {
       CRT_fatalError("Cannot open " PROCSTATFILE);
    }
-   char buffer[PROC_LINE_LENGTH + 1];
-   int cpus = -1;
+   int cpus = 0;
    do {
+      char buffer[PROC_LINE_LENGTH + 1];
+      if (fgets(buffer, PROC_LINE_LENGTH + 1, file) == NULL) {
+         CRT_fatalError("No btime in " PROCSTATFILE);
+      } else if (String_startsWith(buffer, "cpu")) {
          cpus++;
-      char * s = fgets(buffer, PROC_LINE_LENGTH, file);
-      (void) s;
-   } while (String_startsWith(buffer, "cpu"));
+      } else if (String_startsWith(buffer, "btime ")) {
+         sscanf(buffer, "btime %lld\n", &btime);
+         break;
+      }
+   } while(true);
+
    fclose(file);
 
    pl->cpuCount = MAX(cpus - 1, 1);
@@ -259,7 +267,6 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, ui
       this->cpus[i].totalTime = 1;
       this->cpus[i].totalPeriod = 1;
    }
-
    return pl;
 }
 
@@ -355,7 +362,10 @@ static bool LinuxProcessList_readStatFile(Process *process, const char* dirname,
    location += 1;
    process->nlwp = strtol(location, &location, 10);
    location += 1;
-   for (int i=0; i<17; i++) location = strchr(location, ' ')+1;
+   location = strchr(location, ' ')+1;
+   lp->starttime = strtoll(location, &location, 10);
+   location += 1;
+   for (int i=0; i<15; i++) location = strchr(location, ' ')+1;
    process->exit_signal = strtol(location, &location, 10);
    location += 1;
    assert(location != NULL);
@@ -367,7 +377,7 @@ static bool LinuxProcessList_readStatFile(Process *process, const char* dirname,
 }
 
 
-static bool LinuxProcessList_statProcessDir(Process* process, const char* dirname, char* name, time_t curTime) {
+static bool LinuxProcessList_statProcessDir(Process* process, const char* dirname, char* name) {
    char filename[MAX_NAME+1];
    filename[MAX_NAME] = '\0';
 
@@ -377,13 +387,6 @@ static bool LinuxProcessList_statProcessDir(Process* process, const char* dirnam
    if (statok == -1)
       return false;
    process->st_uid = sstat.st_uid;
-  
-   struct tm date;
-   time_t ctime = sstat.st_ctime;
-   process->starttime_ctime = ctime;
-   (void) localtime_r((time_t*) &ctime, &date);
-   strftime(process->starttime_show, 7, ((ctime > curTime - 86400) ? "%R " : "%b%d "), &date);
-   
    return true;
 }
 
@@ -653,9 +656,9 @@ static void LinuxProcessList_readDelayAcctData(LinuxProcessList* this, LinuxProc
    }
 
    if (nl_send_sync(this->netlink_socket, msg) < 0) {
-      process->swapin_delay_percent = -1LL;
-      process->blkio_delay_percent = -1LL;
-      process->cpu_delay_percent = -1LL;
+      process->swapin_delay_percent = -1;
+      process->blkio_delay_percent = -1;
+      process->cpu_delay_percent = -1;
       return;
    }
    
@@ -666,6 +669,77 @@ static void LinuxProcessList_readDelayAcctData(LinuxProcessList* this, LinuxProc
 
 #endif
 
+#ifdef HAVE_PERFCOUNTERS
+
+#define READ_COUNTER(_b, _var, _flag, _type, _config)           \
+   bool _b ## Ok = false;                                       \
+   uint64_t _b ## Delta = 0;                                    \
+   if (flags & _flag && lp->super.show) {                       \
+      if (!_var) {                                              \
+         _var = PerfCounter_new(lp->super.pid, _type, _config); \
+         _b ## Ok = PerfCounter_read(_var);                     \
+         _b ## Delta = 0;                                       \
+      } else {                                                  \
+         _b ## Ok = PerfCounter_read(_var);                     \
+         _b ## Delta = PerfCounter_delta(_var);                 \
+      }                                                         \
+      if (_b ## Ok) {                                           \
+      }                                                         \
+   } else {                                                     \
+      if (_var) {                                               \
+         PerfCounter_delete(_var);                              \
+         _var = NULL;                                           \
+      }                                                         \
+   }
+
+#define SET_IF(_ok, _var, _exp) \
+   if (_ok) {                   \
+      _var = _exp;              \
+   } else {                     \
+      _var = -1;                \
+   }
+
+#define SET_IFNZ(_ok, _z, _var, _exp) \
+   if (_ok) {                         \
+      if (_z > 0) {                   \
+         _var = _exp;                 \
+      } else {                        \
+         _var = 0;                    \
+      }                               \
+   } else {                           \
+      _var = -1;                      \
+   }
+
+#define L1DR  (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_READ  << 8) | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16))
+#define L1DRM (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_READ  << 8) | (PERF_COUNT_HW_CACHE_RESULT_MISS   << 16))
+#define L1DW  (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16))
+#define L1DWM (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (PERF_COUNT_HW_CACHE_RESULT_MISS   << 16))
+
+static void LinuxProcessList_readPerfCounters(LinuxProcess* lp, uint64_t flags) {
+
+   READ_COUNTER(c, lp->cycleCounter, PROCESS_FLAG_LINUX_HPC_CYCLE, PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES);
+   READ_COUNTER(i, lp->insnCounter,  PROCESS_FLAG_LINUX_HPC_INSN,  PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS);
+   READ_COUNTER(m, lp->missCounter,  PROCESS_FLAG_LINUX_HPC_MISS,  PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES);
+   READ_COUNTER(b, lp->brCounter,    PROCESS_FLAG_LINUX_HPC_BMISS, PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES);
+
+   READ_COUNTER(r, lp->l1drCounter,  PROCESS_FLAG_LINUX_HPC_L1DR,  PERF_TYPE_HW_CACHE, L1DR);
+   READ_COUNTER(R, lp->l1drmCounter, PROCESS_FLAG_LINUX_HPC_L1DRM, PERF_TYPE_HW_CACHE, L1DRM);
+   READ_COUNTER(w, lp->l1dwCounter,  PROCESS_FLAG_LINUX_HPC_L1DW,  PERF_TYPE_HW_CACHE, L1DW);
+   READ_COUNTER(W, lp->l1dwmCounter, PROCESS_FLAG_LINUX_HPC_L1DWM, PERF_TYPE_HW_CACHE, L1DWM);
+
+   SET_IF(cOk, lp->mcycle, (double)cDelta / 1000000);
+   SET_IF(iOk, lp->minstr, (double)iDelta / 1000000);
+   SET_IFNZ(cOk && iOk, cDelta, lp->ipc,    (double)iDelta / cDelta);
+   SET_IFNZ(mOk && iOk, iDelta, lp->pMiss,  100 * ((double)mDelta / iDelta));
+   SET_IFNZ(bOk && iOk, iDelta, lp->pBMiss, 100 * ((double)bDelta / iDelta));
+   SET_IF(rOk, lp->l1dr,  (double)rDelta / 1000);
+   SET_IF(ROk, lp->l1drm, (double)RDelta / 1000);
+   SET_IF(wOk, lp->l1dw,  (double)wDelta / 1000);
+   SET_IF(WOk, lp->l1dwm, (double)WDelta / 1000);
+}
+
+#endif
+
 static void setCommand(Process* process, const char* command, int len) {
    if (process->comm && process->commLen >= len) {
       strncpy(process->comm, command, len + 1);
@@ -709,7 +783,7 @@ static bool LinuxProcessList_readCmdlineFile(Process* process, const char* dirna
    }
    command[lastChar + 1] = '\0';
    process->basenameOffset = tokenEnd;
-   setCommand(process, command, lastChar);
+   setCommand(process, command, lastChar + 1);
 
    return true;
 }
@@ -761,8 +835,8 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
    DIR* dir;
    struct dirent* entry;
    Settings* settings = pl->settings;
+   ScreenSettings* ss = settings->ss;
 
-   time_t curTime = tv.tv_sec;
    #ifdef HAVE_TASKSTATS
    unsigned long long now = tv.tv_sec*1000LL+tv.tv_usec/1000LL;
    #endif
@@ -806,7 +880,7 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
       LinuxProcessList_recurseProcTree(this, subdirname, proc, period, tv);
 
       #ifdef HAVE_TASKSTATS
-      if (settings->flags & PROCESS_FLAG_IO)
+      if (ss->flags & PROCESS_FLAG_IO)
          LinuxProcessList_readIoFile(lp, dirname, name, now);
       #endif
 
@@ -825,7 +899,7 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
          free(lp->ttyDevice);
          lp->ttyDevice = LinuxProcessList_updateTtyDevice(this->ttyDrivers, proc->tty_nr);
       }
-      if (settings->flags & PROCESS_FLAG_LINUX_IOPRIO)
+      if (ss->flags & PROCESS_FLAG_LINUX_IOPRIO)
          LinuxProcess_updateIOPriority(lp);
       float percent_cpu = (lp->utime + lp->stime - lasttimes) / period * 100.0;
       proc->percent_cpu = CLAMP(percent_cpu, 0.0, cpus * 100.0);
@@ -834,19 +908,19 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
 
       if(!preExisting) {
 
-         if (! LinuxProcessList_statProcessDir(proc, dirname, name, curTime))
+         if (! LinuxProcessList_statProcessDir(proc, dirname, name))
             goto errorReadingProcess;
 
          proc->user = UsersTable_getRef(pl->usersTable, proc->st_uid);
 
          #ifdef HAVE_OPENVZ
-         if (settings->flags & PROCESS_FLAG_LINUX_OPENVZ) {
+         if (ss->flags & PROCESS_FLAG_LINUX_OPENVZ) {
             LinuxProcessList_readOpenVZData(lp, dirname, name);
          }
          #endif
          
          #ifdef HAVE_VSERVER
-         if (settings->flags & PROCESS_FLAG_LINUX_VSERVER) {
+         if (ss->flags & PROCESS_FLAG_LINUX_VSERVER) {
             LinuxProcessList_readVServerData(lp, dirname, name);
          }
          #endif
@@ -869,13 +943,18 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
       #endif
 
       #ifdef HAVE_CGROUP
-      if (settings->flags & PROCESS_FLAG_LINUX_CGROUP)
+      if (ss->flags & PROCESS_FLAG_LINUX_CGROUP)
          LinuxProcessList_readCGroupFile(lp, dirname, name);
       #endif
       
-      if (settings->flags & PROCESS_FLAG_LINUX_OOM)
+      if (ss->flags & PROCESS_FLAG_LINUX_OOM)
          LinuxProcessList_readOomData(lp, dirname, name);
 
+      #ifdef HAVE_PERFCOUNTERS
+      if (ss->flags & PROCESS_FLAG_LINUX_HPC)
+         LinuxProcessList_readPerfCounters(lp, ss->flags);
+      #endif
+
       if (proc->state == 'Z' && (proc->basenameOffset == 0)) {
          proc->basenameOffset = -1;
          setCommand(proc, command, commLen);

linux/LinuxProcessList.h

@@ -20,6 +20,8 @@ in the source distribution for its full text.
 
 #include "ProcessList.h"
 
+extern long long btime;
+
 typedef struct CPUData_ {
    unsigned long long int totalTime;
    unsigned long long int userTime;
@@ -84,7 +86,7 @@ typedef struct LinuxProcessList_ {
 #endif
 
 #ifndef PROC_LINE_LENGTH
-#define PROC_LINE_LENGTH 512
+#define PROC_LINE_LENGTH 4096
 #endif
 
 
@@ -121,6 +123,54 @@ void ProcessList_delete(ProcessList* pl);
 
 #endif
 
+#ifdef HAVE_PERFCOUNTERS
+
+#define READ_COUNTER(_b, _var, _flag, _type, _config)           \
+   bool _b ## Ok = false;                                       \
+   uint64_t _b ## Delta = 0;                                    \
+   if (flags & _flag && lp->super.show) {                       \
+      if (!_var) {                                              \
+         _var = PerfCounter_new(lp->super.pid, _type, _config); \
+         _b ## Ok = PerfCounter_read(_var);                     \
+         _b ## Delta = 0;                                       \
+      } else {                                                  \
+         _b ## Ok = PerfCounter_read(_var);                     \
+         _b ## Delta = PerfCounter_delta(_var);                 \
+      }                                                         \
+      if (_b ## Ok) {                                           \
+      }                                                         \
+   } else {                                                     \
+      if (_var) {                                               \
+         PerfCounter_delete(_var);                              \
+         _var = NULL;                                           \
+      }                                                         \
+   }
+
+#define SET_IF(_ok, _var, _exp) \
+   if (_ok) {                   \
+      _var = _exp;              \
+   } else {                     \
+      _var = -1;                \
+   }
+
+#define SET_IFNZ(_ok, _z, _var, _exp) \
+   if (_ok) {                         \
+      if (_z > 0) {                   \
+         _var = _exp;                 \
+      } else {                        \
+         _var = 0;                    \
+      }                               \
+   } else {                           \
+      _var = -1;                      \
+   }
+
+#define L1DR  (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_READ  << 8) | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16))
+#define L1DRM (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_READ  << 8) | (PERF_COUNT_HW_CACHE_RESULT_MISS   << 16))
+#define L1DW  (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16))
+#define L1DWM (PERF_COUNT_HW_CACHE_L1D | (PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (PERF_COUNT_HW_CACHE_RESULT_MISS   << 16))
+
+#endif
+
 void ProcessList_goThroughEntries(ProcessList* super);
 
 #endif

linux/PerfCounter.c

@@ -0,0 +1,135 @@
+/*
+ * This file is based on tiptop.
+ * by Erven ROHOU
+ * Copyright (c) 2011, 2012, 2014 Inria
+ * License: GNU General Public License version 2.
+ */
+ 
+#include "PerfCounter.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "XAlloc.h"
+
+/*{
+
+#include <config.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <asm/unistd.h>
+#include <inttypes.h>
+#include <stdbool.h>
+// The sys_perf_counter_open syscall and header files changed names
+// between Linux 2.6.31 and 2.6.32. Do the mangling here.
+#ifdef HAVE_LINUX_PERF_COUNTER_H
+#include <linux/perf_counter.h>
+#define STRUCT_NAME perf_counter_attr
+#define SYSCALL_NUM __NR_perf_counter_open
+
+#elif HAVE_LINUX_PERF_EVENT_H
+#include <linux/perf_event.h>
+#define STRUCT_NAME perf_event_attr
+#define SYSCALL_NUM __NR_perf_event_open
+
+#else
+#error Sorry, performance counters not supported on this system.
+#endif
+
+typedef struct PerfCounter_ {
+   struct STRUCT_NAME events;
+   pid_t pid;
+   int fd;
+   uint64_t prevValue;
+   uint64_t value;
+} PerfCounter;
+
+#define PerfCounter_delta(pc_) ((pc_)->value - (pc_)->prevValue)
+
+}*/
+
+int PerfCounter_openFds = 0;
+static int PerfCounter_fdLimit = -1;
+
+static void PerfCounter_initFdLimit() {
+   char name[100] = { 0 };  /* needs to fit the name /proc/xxxx/limits */
+   snprintf(name, sizeof(name) - 1, "/proc/%d/limits", getpid());
+   FILE* f = fopen(name, "r");
+   if (f) {
+     char line[100];
+     while (fgets(line, 100, f)) {
+       int n = sscanf(line, "Max open files %d", &PerfCounter_fdLimit);
+       if (n) {
+         break;
+       }
+     }
+     fclose(f);
+   }
+
+   PerfCounter_fdLimit -= 20; /* keep some slack */
+   if (PerfCounter_fdLimit == 0) {  /* something went wrong */
+      PerfCounter_fdLimit = 200;  /* reasonable default? */
+   }
+}
+
+static long perf_event_open(struct STRUCT_NAME *hw_event, pid_t pid, int cpu, int group_fd, unsigned long flags) {
+   int ret = syscall(SYSCALL_NUM, hw_event, pid, cpu, group_fd, flags);
+   #if defined(__x86_64__) || defined(__i386__)
+   if (ret < 0 && ret > -4096) {
+      errno = -ret;
+      ret = -1;
+   }
+   #endif
+   return ret;
+}
+
+PerfCounter* PerfCounter_new(pid_t pid, uint32_t type, uint64_t config) {
+   if (PerfCounter_fdLimit == -1) {
+      PerfCounter_initFdLimit();
+   }
+   PerfCounter* this = xCalloc(sizeof(PerfCounter), 1);
+   this->pid = pid;
+   this->events.disabled = 0;
+   this->events.pinned = 1;
+   this->events.exclude_hv = 1;
+   this->events.exclude_kernel = 1;
+   this->events.type = type;
+   this->events.config = config;
+   if (PerfCounter_openFds < PerfCounter_fdLimit) {
+      this->fd = perf_event_open(&this->events, pid, -1, -1, 0);
+   } else {
+      this->fd = -1;
+   }
+   if (this->fd != -1) {
+      PerfCounter_openFds++;
+   }
+   return this;
+}
+
+void PerfCounter_delete(PerfCounter* this) {
+   if (!this) {
+      return;
+   }
+   if (this->fd != -1) {
+      PerfCounter_openFds--;
+   }
+   close(this->fd);
+   free(this);
+}
+
+bool PerfCounter_read(PerfCounter* this) {
+   if (this->fd == -1) {
+      return false;
+   }
+   uint64_t value;
+   int r = read(this->fd, &value, sizeof(value));
+   if (r != sizeof(value)) {
+      close(this->fd);
+      this->fd = perf_event_open(&this->events, this->pid, -1, -1, 0);
+      return false;
+   }
+   this->prevValue = this->value;
+   this->value = value;
+   return true;
+}

linux/PerfCounter.h

@@ -0,0 +1,54 @@
+/* Do not edit this file. It was automatically generated. */
+
+#ifndef HEADER_PerfCounter
+#define HEADER_PerfCounter
+/*
+ * This file is based on tiptop.
+ * by Erven ROHOU
+ * Copyright (c) 2011, 2012, 2014 Inria
+ * License: GNU General Public License version 2.
+ */
+ 
+
+
+#include <config.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <asm/unistd.h>
+#include <inttypes.h>
+#include <stdbool.h>
+// The sys_perf_counter_open syscall and header files changed names
+// between Linux 2.6.31 and 2.6.32. Do the mangling here.
+#ifdef HAVE_LINUX_PERF_COUNTER_H
+#include <linux/perf_counter.h>
+#define STRUCT_NAME perf_counter_attr
+#define SYSCALL_NUM __NR_perf_counter_open
+
+#elif HAVE_LINUX_PERF_EVENT_H
+#include <linux/perf_event.h>
+#define STRUCT_NAME perf_event_attr
+#define SYSCALL_NUM __NR_perf_event_open
+
+#else
+#error Sorry, performance counters not supported on this system.
+#endif
+
+typedef struct PerfCounter_ {
+   struct STRUCT_NAME events;
+   pid_t pid;
+   int fd;
+   uint64_t prevValue;
+   uint64_t value;
+} PerfCounter;
+
+#define PerfCounter_delta(pc_) ((pc_)->value - (pc_)->prevValue)
+
+
+extern int PerfCounter_openFds;
+PerfCounter* PerfCounter_new(pid_t pid, uint32_t type, uint64_t config);
+
+void PerfCounter_delete(PerfCounter* this);
+
+bool PerfCounter_read(PerfCounter* this);
+
+#endif

linux/Platform.c

@@ -22,6 +22,7 @@ in the source distribution for its full text.
 #include "ClockMeter.h"
 #include "HostnameMeter.h"
 #include "LinuxProcess.h"
+#include "CRT.h"
 
 #include <math.h>
 #include <assert.h>
@@ -35,16 +36,13 @@ in the source distribution for its full text.
 #include "BatteryMeter.h"
 #include "LinuxProcess.h"
 #include "SignalsPanel.h"
+#include "Settings.h"
 }*/
 
 #ifndef CLAMP
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, M_SHARE, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
-
-//static ProcessField defaultIoFields[] = { PID, IO_PRIORITY, USER, IO_READ_RATE, IO_WRITE_RATE, IO_RATE, COMM, 0 };
-
 int Platform_numberOfFields = LAST_PROCESSFIELD;
 
 const SignalItem Platform_signals[] = {
@@ -84,6 +82,31 @@ const SignalItem Platform_signals[] = {
    { .name = "31 SIGSYS",    .number = 31 },
 };
 
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID USER PRIORITY NICE M_SIZE M_RESIDENT M_SHARE STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+   {
+      .name = "I/O",
+      .columns = "PID USER IO_PRIORITY IO_RATE IO_READ_RATE IO_WRITE_RATE PERCENT_SWAP_DELAY PERCENT_IO_DELAY Command",
+      .sortKey = "IO_RATE",
+   },
+   {
+      .name = "Perf Counters",
+      .columns = "PID USER PERCENT_CPU PROCESSOR MCYCLE MINSTR IPC PERCENT_MISS PERCENT_BMISS Command",
+      .sortKey = "MCYCLE",
+   },
+   {
+      .name = "L1 Data Cache",
+      .columns = "PID USER PERCENT_CPU L1DREADS L1DRMISSES L1DWRITES L1DWMISSES Command",
+      .sortKey = "L1DREADS",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
+
 const unsigned int Platform_numberOfSignals = sizeof(Platform_signals)/sizeof(SignalItem);
 
 static Htop_Reaction Platform_actionSetIOPriority(State* st) {

linux/Platform.h

@@ -14,17 +14,20 @@ in the source distribution for its full text.
 #include "BatteryMeter.h"
 #include "LinuxProcess.h"
 #include "SignalsPanel.h"
+#include "Settings.h"
 
 #ifndef CLAMP
 #define CLAMP(x,low,high) (((x)>(high))?(high):(((x)<(low))?(low):(x)))
 #endif
 
-extern ProcessField Platform_defaultFields[];
-
 extern int Platform_numberOfFields;
 
 extern const SignalItem Platform_signals[];
 
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
+
 extern const unsigned int Platform_numberOfSignals;
 
 void Platform_setBindings(Htop_Action* keys);

openbsd/Battery.h

@@ -12,5 +12,4 @@ in the source distribution for its full text.
 
 void Battery_getData(double* level, ACPresence* isOnAC);
 
-
 #endif

openbsd/OpenBSDProcess.c

@@ -215,14 +215,14 @@ void OpenBSDProcess_writeField(Process* this, RichString* str, ProcessField fiel
 long OpenBSDProcess_compare(const void* v1, const void* v2) {
    OpenBSDProcess *p1, *p2;
    Settings *settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   if (settings->ss->direction == 1) {
       p1 = (OpenBSDProcess*)v1;
       p2 = (OpenBSDProcess*)v2;
    } else {
       p2 = (OpenBSDProcess*)v1;
       p1 = (OpenBSDProcess*)v2;
    }
-   switch (settings->sortKey) {
+   switch (settings->ss->sortKey) {
    // add OpenBSD-specific fields here
    default:
       return Process_compare(v1, v2);

openbsd/OpenBSDProcessList.c

@@ -223,6 +223,8 @@ void ProcessList_goThroughEntries(ProcessList* this) {
    bool preExisting;
    Process* proc;
    OpenBSDProcess* fp;
+   struct tm date;
+   struct timeval tv;
    int count = 0;
    int i;
 
@@ -232,6 +234,8 @@ void ProcessList_goThroughEntries(ProcessList* this) {
    struct kinfo_proc* kprocs = kvm_getprocs(opl->kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &count);
    //struct kinfo_proc* kprocs = getprocs(KERN_PROC_ALL, 0, &count);
 
+   gettimeofday(&tv, NULL);
+
    for (i = 0; i < count; i++) {
       kproc = &kprocs[i];
 
@@ -254,6 +258,8 @@ void ProcessList_goThroughEntries(ProcessList* this) {
          proc->user = UsersTable_getRef(this->usersTable, proc->st_uid);
          ProcessList_add((ProcessList*)this, proc);
          proc->comm = OpenBSDProcessList_readProcessName(opl->kd, kproc, &proc->basenameOffset);
+         (void) localtime_r((time_t*) &kproc->p_ustart_sec, &date);
+         strftime(proc->starttime_show, 7, ((proc->starttime_ctime > tv.tv_sec - 86400) ? "%R " : "%b%d "), &date);
       } else {
          if (settings->updateProcessNames) {
             free(proc->comm);

openbsd/Platform.c

@@ -23,6 +23,7 @@ in the source distribution for its full text.
 #include <sys/sched.h>
 #include <uvm/uvmexp.h>
 #include <sys/param.h>
+#include <sys/sysctl.h>
 #include <sys/swap.h>
 
 #include <unistd.h>
@@ -34,6 +35,9 @@ in the source distribution for its full text.
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <time.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <limits.h>
 
 /*{
 #include "Action.h"
@@ -92,7 +96,15 @@ static int percentages(int cnt, int64_t *out, int64_t *new, int64_t *old, int64_
    return (total_change);
 }
 
-ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
 
 int Platform_numberOfFields = LAST_PROCESSFIELD;
 
@@ -294,6 +306,48 @@ void Platform_setTasksValues(Meter* this) {
 }
 
 char* Platform_getProcessEnv(pid_t pid) {
-   // TODO
+   char errbuf[_POSIX2_LINE_MAX];
+   char *env;
+   char **ptr;
+   int count;
+   kvm_t *kt;
+   struct kinfo_proc *kproc;
+   size_t capacity = 4096, size = 0;
+
+   if ((kt = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf)) == NULL)
+      return NULL;
+
+   if ((kproc = kvm_getprocs(kt, KERN_PROC_PID, pid,
+                             sizeof(struct kinfo_proc), &count)) == NULL) {\
+      (void) kvm_close(kt);
       return NULL;
    }
+
+   if ((ptr = kvm_getenvv(kt, kproc, 0)) == NULL) {
+      (void) kvm_close(kt);
+      return NULL;
+   }
+
+   env = xMalloc(capacity);
+   for (char **p = ptr; *p; p++) {
+      size_t len = strlen(*p) + 1;
+
+      if (size + len > capacity) {
+         capacity *= 2;
+         env = xRealloc(env, capacity);
+      }
+
+      strlcpy(env + size, *p, len);
+      size += len;
+   }
+
+   if (size < 2 || env[size - 1] || env[size - 2]) {
+       if (size + 2 < capacity)
+           env = xRealloc(env, capacity + 2);
+       env[size] = 0;
+       env[size+1] = 0;
+   }
+
+   (void) kvm_close(kt);
+   return env;
+}

openbsd/Platform.h

@@ -32,7 +32,9 @@ extern ProcessFieldData Process_fields[];
  * The routine assumes modulo arithmetic.  This function is especially
  * useful on BSD machines for calculating cpu state percentages.
  */
-extern ProcessField Platform_defaultFields[];
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
 
 extern int Platform_numberOfFields;
 

scripts/MakeHeader.py

@@ -9,6 +9,7 @@ ANY=1
 COPY=2
 SKIP=3
 SKIPONE=4
+COPYDEFINE=5
 
 state = ANY
 static = 0
@@ -46,7 +47,11 @@ for line in file.readlines():
       elif len(line) > 1:
          static = 0
          equals = line.find(" = ")
-         if line[-3:] == "= {":
+         if line[:7] == "#define":
+            if line[-1:] == "\\":
+               state = COPYDEFINE
+            out.write( line + "\n")
+         elif line[-3:] == "= {":
             out.write( "extern " + line[:-4] + ";\n" )
             state = SKIP
          elif equals != -1:
@@ -66,6 +71,11 @@ for line in file.readlines():
       else:
          out.write( line  + "\n")
          is_blank = False
+   elif state == COPYDEFINE:
+      is_blank = False
+      out.write( line + "\n")
+      if line[-1:] != "\\":
+         state = ANY
    elif state == COPY:
       is_blank = False
       if line == "}*/":

solaris/Platform.c

@@ -35,6 +35,7 @@ in the source distribution for its full text.
 #include "Action.h"
 #include "BatteryMeter.h"
 #include "SignalsPanel.h"
+#include "SolarisProcess.h"
 #include <signal.h>
 #include <sys/mkdev.h>
 #include <sys/proc.h>
@@ -103,7 +104,15 @@ const SignalItem Platform_signals[] = {
 
 const unsigned int Platform_numberOfSignals = sizeof(Platform_signals)/sizeof(SignalItem);
 
-ProcessField Platform_defaultFields[] = { PID, LWPID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Default",
+      .columns = "PID LWPID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
 
 MeterClass* Platform_meterTypes[] = {
    &CPUMeter_class,

solaris/Platform.h

@@ -14,6 +14,7 @@ in the source distribution for its full text.
 #include "Action.h"
 #include "BatteryMeter.h"
 #include "SignalsPanel.h"
+#include "SolarisProcess.h"
 #include <signal.h>
 #include <sys/mkdev.h>
 #include <sys/proc.h>
@@ -38,7 +39,9 @@ extern const SignalItem Platform_signals[];
 
 extern const unsigned int Platform_numberOfSignals;
 
-extern ProcessField Platform_defaultFields[];
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
 
 extern MeterClass* Platform_meterTypes[];
 

solaris/SolarisProcess.c

@@ -170,14 +170,14 @@ void SolarisProcess_writeField(Process* this, RichString* str, ProcessField fiel
 long SolarisProcess_compare(const void* v1, const void* v2) {
    SolarisProcess *p1, *p2;
    Settings* settings = ((Process*)v1)->settings;
-   if (settings->direction == 1) {
+   if (settings->ss->direction == 1) {
       p1 = (SolarisProcess*)v1;
       p2 = (SolarisProcess*)v2;
    } else {
       p2 = (SolarisProcess*)v1;
       p1 = (SolarisProcess*)v2;
    }
-   switch ((int) settings->sortKey) {
+   switch ((int) settings->ss->sortKey) {
    case ZONEID:
       return (p1->zoneid - p2->zoneid);
    case PROJID:

unsupported/Platform.c

@@ -29,7 +29,15 @@ const SignalItem Platform_signals[] = {
 
 const unsigned int Platform_numberOfSignals = sizeof(Platform_signals)/sizeof(SignalItem);
 
-ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
+ScreenDefaults Platform_defaultScreens[] = {
+   {
+      .name = "Main",
+      .columns = "PID LWPID USER PRIORITY NICE M_SIZE M_RESIDENT STATE PERCENT_CPU PERCENT_MEM TIME Command",
+      .sortKey = "PERCENT_CPU",
+   },
+};
+
+const unsigned int Platform_numberOfDefaultScreens = sizeof(Platform_defaultScreens)/sizeof(ScreenDefaults);
 
 ProcessFieldData Process_fields[] = {
    [0] = { .name = "", .title = NULL, .description = NULL, .flags = 0, },

unsupported/Platform.h

@@ -19,7 +19,9 @@ extern const SignalItem Platform_signals[];
 
 extern const unsigned int Platform_numberOfSignals;
 
-extern ProcessField Platform_defaultFields[];
+extern ScreenDefaults Platform_defaultScreens[];
+
+extern const unsigned int Platform_numberOfDefaultScreens;
 
 extern ProcessFieldData Process_fields[];