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/*
htop - Action.c
(C) 2015 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h"
#include "Action.h"
#include "Affinity.h"
#include "AffinityPanel.h"
#include "CategoriesPanel.h"
#include "CRT.h"
#include "EnvScreen.h"
#include "MainPanel.h"
#include "OpenFilesScreen.h"
#include "Process.h"
#include "ScreenManager.h"
#include "SignalsPanel.h"
#include "StringUtils.h"
#include "TraceScreen.h"
#include "Platform.h"
#include <ctype.h>
#include <math.h>
#include <pwd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <sys/param.h>
#include <sys/time.h>
/*{
#include "IncSet.h"
#include "Settings.h"
#include "Header.h"
#include "UsersTable.h"
#include "ProcessList.h"
#include "Panel.h"
typedef enum {
HTOP_OK = 0x00,
HTOP_REFRESH = 0x01,
HTOP_RECALCULATE = 0x03, // implies HTOP_REFRESH
HTOP_SAVE_SETTINGS = 0x04,
HTOP_KEEP_FOLLOWING = 0x08,
HTOP_QUIT = 0x10,
HTOP_REDRAW_BAR = 0x20,
HTOP_UPDATE_PANELHDR = 0x41, // implies HTOP_REFRESH
} Htop_Reaction;
typedef Htop_Reaction (*Htop_Action)();
typedef struct State_ {
Settings* settings;
UsersTable* ut;
ProcessList* pl;
Panel* panel;
Header* header;
} State;
}*/
Object* Action_pickFromVector(State* st, Panel* list, int x) {
Panel* panel = st->panel;
Header* header = st->header;
Settings* settings = st->settings;
int y = panel->y;
ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, false);
scr->allowFocusChange = false;
ScreenManager_add(scr, list, x - 1);
ScreenManager_add(scr, panel, -1);
Panel* panelFocus;
int ch;
bool unfollow = false;
int pid = MainPanel_selectedPid((MainPanel*)panel);
if (header->pl->following == -1) {
header->pl->following = pid;
unfollow = true;
}
ScreenManager_run(scr, &panelFocus, &ch);
if (unfollow) {
header->pl->following = -1;
}
ScreenManager_delete(scr);
Panel_move(panel, 0, y);
Panel_resize(panel, COLS, LINES-y-1);
if (panelFocus == list && ch == 13) {
Process* selected = (Process*)Panel_getSelected(panel);
if (selected && selected->pid == pid)
return Panel_getSelected(list);
else
beep();
}
return NULL;
}
// ----------------------------------------
static void Action_runSetup(Settings* settings, const Header* header, ProcessList* pl) {
ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, true);
CategoriesPanel* panelCategories = CategoriesPanel_new(scr, settings, (Header*) header, pl);
ScreenManager_add(scr, (Panel*) panelCategories, 16);
CategoriesPanel_makeMetersPage(panelCategories);
Panel* panelFocus;
int ch;
ScreenManager_run(scr, &panelFocus, &ch);
ScreenManager_delete(scr);
if (settings->changed) {
Header_writeBackToSettings(header);
}
}
static bool changePriority(MainPanel* panel, int delta) {
bool anyTagged;
bool ok = MainPanel_foreachProcess(panel, (MainPanel_ForeachProcessFn) Process_changePriorityBy, delta, &anyTagged);
if (!ok)
beep();
return anyTagged;
}
static void addUserToVector(int key, void* userCast, void* panelCast) {
char* user = (char*) userCast;
Panel* panel = (Panel*) panelCast;
Panel_add(panel, (Object*) ListItem_new(user, key));
}
bool Action_setUserOnly(const char* userName, uid_t* userId) {
struct passwd* user = getpwnam(userName);
if (user) {
*userId = user->pw_uid;
return true;
}
*userId = -1;
return false;
}
static void tagAllChildren(Panel* panel, Process* parent) {
parent->tag = true;
pid_t ppid = parent->pid;
for (int i = 0; i < Panel_size(panel); i++) {
Process* p = (Process*) Panel_get(panel, i);
if (!p->tag && p->ppid == ppid) {
tagAllChildren(panel, p);
}
}
}
static bool expandCollapse(Panel* panel) {
Process* p = (Process*) Panel_getSelected(panel);
if (!p) return false;
p->showChildren = !p->showChildren;
return true;
}
Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
settings->sortKey = sortKey;
settings->direction = 1;
settings->treeView = false;
return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction sortBy(State* st) {
Htop_Reaction reaction = HTOP_OK;
Panel* sortPanel = Panel_new(0, 0, 0, 0, true, Class(ListItem), FunctionBar_newEnterEsc("Sort ", "Cancel "));
Panel_setHeader(sortPanel, "Sort by");
ProcessField* fields = st->settings->fields;
for (int i = 0; fields[i]; i++) {
char* name = String_trim(Process_fields[fields[i]].name);
Panel_add(sortPanel, (Object*) ListItem_new(name, fields[i]));
if (fields[i] == st->settings->sortKey)
Panel_setSelected(sortPanel, i);
free(name);
}
ListItem* field = (ListItem*) Action_pickFromVector(st, sortPanel, 15);
if (field) {
reaction |= Action_setSortKey(st->settings, field->key);
}
Object_delete(sortPanel);
return reaction | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
// ----------------------------------------
static Htop_Reaction actionResize(State* st) {
Panel_resize(st->panel, COLS, LINES-(st->panel->y)-1);
return HTOP_REDRAW_BAR;
}
static Htop_Reaction actionSortByMemory(State* st) {
return Action_setSortKey(st->settings, PERCENT_MEM);
}
static Htop_Reaction actionSor
8000
tByCPU(State* st) {
return Action_setSortKey(st->settings, PERCENT_CPU);
}
static Htop_Reaction actionSortByTime(State* st) {
return Action_setSortKey(st->settings, TIME);
}
static Htop_Reaction actionToggleKernelThreads(State* st) {
st->settings->hideKernelThreads = !st->settings->hideKernelThreads;
return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionToggleUserlandThreads(State* st) {
st->settings->hideUserlandThreads = !st->settings->hideUserlandThreads;
st->settings->hideThreads = st->settings->hideUserlandThreads;
return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionToggleProgramPath(State* st) {
st->settings->showProgramPath = !st->settings->showProgramPath;
return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionToggleTreeView(State* st) {
st->settings->treeView = !st->settings->treeView;
if (st->settings->treeView) st->settings->direction = 1;
ProcessList_expandTree(st->pl);
return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionIncFilter(State* st) {
IncSet* inc = ((MainPanel*)st->panel)->inc;
IncSet_activate(inc, INC_FILTER, st->panel);
st->pl->incFilter = IncSet_filter(inc);
return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionIncSearch(State* st) {
IncSet_activate(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel);
return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionHigherPriority(State* st) {
bool changed = changePriority((MainPanel*)st->panel, -1);
return changed ? HTOP_REFRESH : HTOP_OK;
}
static Htop_Reaction actionLowerPriority(State* st) {
bool changed = changePriority((MainPanel*)st->panel, 1);
return changed ? HTOP_REFRESH : HTOP_OK;
}
static Htop_Reaction actionInvertSortOrder(State* st) {
Settings_invertSortOrder(st->settings);
return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionSetSortColumn(State* st) {
return sortBy(st);
}
static Htop_Reaction actionExpandOrCollapse(State* st) {
bool changed = expandCollapse(st->panel);
return changed ? HTOP_RECALCULATE : HTOP_OK;
}
static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
return st->settings->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
}
static Htop_Reaction actionQuit() {
return HTOP_QUIT;
}
static Htop_Reaction actionSetAffinity(State* st) {
if (st->pl->cpuCount == 1)
return HTOP_OK;
#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
Panel* panel = st->panel;
Process* p = (Process*) Panel_getSelected(panel);
if (!p) return HTOP_OK;
Affinity* affinity = Affinity_get(p, st->pl);
if (!affinity) return HTOP_OK;
Panel* affinityPanel = AffinityPanel_new(st->pl, affinity);
Affinity_delete(affinity);
void* set = Action_pickFromVector(st, affinityPanel, 15);
if (set) {
Affinity* affinity = AffinityPanel_getAffinity(affinityPanel, st->pl);
bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) Affinity_set, (size_t) affinity, NULL);
if (!ok) beep();
Affinity_delete(affinity);
}
Panel_delete((Object*)affinityPanel);
#endif
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionKill(State* st) {
Panel* signalsPanel = (Panel*) SignalsPanel_new();
ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 15);
if (sgn) {
if (sgn->key != 0) {
Panel_setHeader(st->panel, "Sending...");
Panel_draw(st->panel, true);
refresh();
MainPanel_foreachProcess((MainPanel*)st->panel, (MainPanel_ForeachProcessFn) Process_sendSignal, (size_t) sgn->key, NULL);
napms(500);
}
}
Panel_delete((Object*)signalsPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionFilterByUser(State* st) {
Panel* usersPanel = Panel_new(0, 0, 0, 0, true, Class(ListItem), FunctionBar_newEnterEsc("Show ", "Cancel "));
Panel_setHeader(usersPanel, "Show processes of:");
UsersTable_foreach(st->ut, addUserToVector, usersPanel);
Vector_insertionSort(usersPanel->items);
ListItem* allUsers = ListItem_new("All users", -1);
Panel_insert(usersPanel, 0, (Object*) allUsers);
ListItem* picked = (ListItem*) Action_pickFromVector(st, usersPanel, 20);
if (picked) {
if (picked == allUsers) {
st->pl->userId = -1;
} else {
Action_setUserOnly(ListItem_getRef(picked), &(st->pl->userId));
}
}
Panel_delete((Object*)usersPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionFollow(State* st) {
st->pl->following = MainPanel_selectedPid((MainPanel*)st->panel);
Panel_setSelectionColor(st->panel, CRT_colors[PANEL_SELECTION_FOLLOW]);
return HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionSetup(State* st) {
Action_runSetup(st->settings, st->header, st->pl);
// TODO: shouldn't need this, colors should be dynamic
int headerHeight = Header_calculateHeight(st->header);
Panel_move(st->panel, 0, headerHeight);
Panel_resize(st->panel, COLS, LINES-headerHeight-1);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionLsof(State* st) {
Process* p = (Process*) Panel_getSelected(st->panel);
if (!p) return HTOP_OK;
OpenFilesScreen* ofs = OpenFilesScreen_new(p);
InfoScreen_run((InfoScreen*)ofs);
OpenFilesScreen_delete((Object*)ofs);
clear();
CRT_enableDelay();
return HTOP_REFRESH | HTOP_REDRAW_BAR;
}
static Htop_Reaction actionStrace(State* st) {
Process* p = (Process*) Panel_getSelected(st->panel);
if (!p) return HTOP_OK;
TraceScreen* ts = TraceScreen_new(p);
bool ok = TraceScreen_forkTracer(ts);
if (ok) {
InfoScreen_run((InfoScreen*)ts);
}
TraceScreen_delete((Object*)ts);
clear();
CRT_enableDelay();
return HTOP_REFRESH | HTOP_REDRAW_BAR;
}
static Htop_Reaction actionTag(State* st) {
Process* p = (Process*) Panel_getSelected(st->panel);
if (!p) return HTOP_OK;
Process_toggleTag(p);
Panel_onKey(st->panel, KEY_DOWN);
return HTOP_OK;
}
static Htop_Reaction actionRedraw() {
clear();
return HTOP_REFRESH | HTOP_REDRAW_BAR;
}
static struct { const char* key; const char* info; } helpLeft[] = {
{ .key = " Arrows: ", .info = "scroll process list" },
{ .key = " Digits: ", .info = "incremental PID search" },
{ .key = " F3 /: ", .info = "incremental name search" },
{ .key = " F4 \\: ",.info = "incremental name filtering" },
{ .key = " F5 t: ", .info = "tree view" },
{ .key = " p: ", .info = "toggle program path" },
{ .key = " u: ", .info = "show processes of a single user" },
{ .key = " H: ", .info = "hide/show user process threads" },
{ .key = " K: ", .info = "hide/show kernel threads" },
{ .key = " F: ", .info = "cursor follows process" },
{ .key = " F6 + -: ", .info = "expand/collapse tree" },
{ .key = " P M T: ", .info = "sort by CPU%, MEM% or TIME" },
{ .key = " I: ", .info = "invert sort order" },
{ .key = " F6 >: ", .info = "select sort column" },
{ .key = NULL, .info = NULL }
};
static struct { const char* key; const char* info; } helpRight[] = {
{ .key = " Space: ", .info = "tag process" },
{ .key = " c: ", .info = "tag process and its children" },
{ .key = " U: ", .info = "untag all processes" },
{ .key = " F9 k: ", .info = "kill process/tagged processes" },
{ .key = " F7 ]: ", .info = "higher priority (root only)" },
{ .key = " F8 [: ", .info = "lower priority (+ nice)" },
#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
{ .key = " a: ", .info = "set CPU affinity" },
#endif
{ .key = " e: ", .info = "show process environment" },
{ .key = " i: ", .info = "set IO priority" },
{ .key = " l: ", .info = "list open files with lsof" },
{ .key = " s: ", .info = "trace syscalls with strace" },
{ .key = " ", .info = "" },
{ .key = " F2 S: ", .info = "setup" },
{ .key = " F1 h: ", .info = "show this help screen" },
{ .key = " F10 q: ", .info = "quit" },
{ .key = NULL, .info = NULL }
};
static Htop_Reaction actionHelp(State* st) {
Settings* settings = st->settings;
clear();
attrset(CRT_colors[HELP_BOLD]);
for (int i = 0; i < LINES-1; i++)
mvhline(i, 0, ' ', COLS);
mvaddstr(0, 0, "htop " VERSION " - " COPYRIGHT);
mvaddstr(1, 0, "Released under the GNU GPL. See 'man' page for more info.");
attrset(CRT_colors[DEFAULT_COLOR]);
mvaddstr(3, 0, "CPU usage bar: ");
#define addattrstr(a,s) attrset(a);addstr(s)
addattrstr(CRT_colors[BAR_BORDER], "[");
if (settings->detailedCPUTime) {
addattrstr(CRT_colors[CPU_NICE_TEXT], "low"); addstr("/");
addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
addattrstr(CRT_colors[CPU_KERNEL], "kernel"); addstr("/");
addattrstr(CRT_colors[CPU_IRQ], "irq"); addstr("/");
addattrstr(CRT_colors[CPU_SOFTIRQ], "soft-irq"); addstr("/");
addattrstr(CRT_colors[CPU_STEAL], "steal"); addstr("/");
addattrstr(CRT_colors[CPU_GUEST], "guest"); addstr("/");
addattrstr(CRT_colors[CPU_IOWAIT], "io-wait");
addattrstr(CRT_colors[BAR_SHADOW], " used%");
} else {
addattrstr(CRT_colors[CPU_NICE_TEXT], "low-priority"); addstr("/");
addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
addattrstr(CRT_colors[CPU_KERNEL], "kernel"); addstr("/");
addattrstr(CRT_colors[CPU_STEAL], "virtualiz");
addattrstr(CRT_colors[BAR_SHADOW], " used%");
}
addattrstr(CRT_colors[BAR_BORDER], "]");
attrset(CRT_colors[DEFAULT_COLOR]);
mvaddstr(4, 0, "Memory bar: ");
addattrstr(CRT_colors[BAR_BORDER], "[");
addattrstr(CRT_colors[MEMORY_USED], "used"); addstr("/");
addattrstr(CRT_colors[MEMORY_BUFFERS_TEXT], "buffers"); addstr("/");
addattrstr(CRT_colors[MEMORY_CACHE], "cache");
addattrstr(CRT_colors[BAR_SHADOW], " used/total");
addattrstr(CRT_colors[BAR_BORDER], "]");
attrset(CRT_colors[DEFAULT_COLOR]);
mvaddstr(5, 0, "Swap bar: ");
addattrstr(CRT_colors[BAR_BORDER], "[");
addattrstr(CRT_colors[SWAP], "used");
addattrstr(CRT_colors[BAR_SHADOW], " used/total");
addattrstr(CRT_colors[BAR_BORDER], "]");
attrset(CRT_colors[DEFAULT_COLOR]);
mvaddstr(6,0, "Type and layout of header meters are configurable in the setup screen.");
if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
mvaddstr(7, 0, "In monochrome, meters display as different chars, in order: |#*@$%&.");
}
mvaddstr( 8, 0, " Status: R: running; S: sleeping; T: traced/stopped; Z: zombie; D: disk sleep");
for (int i = 0; helpLeft[i].info; i++) { mvaddstr(9+i, 9, helpLeft[i].info); }
for (int i = 0; helpRight[i].info; i++) { mvaddstr(9+i, 49, helpRight[i].info); }
attrset(CRT_colors[HELP_BOLD]);
for (int i = 0; helpLeft[i].key; i++) { mvaddstr(9+i, 0, helpLeft[i].key); }
for (int i = 0; helpRight[i].key; i++) { mvaddstr(9+i, 40, helpRight[i].key); }
attrset(CRT_colors[PROCESS_THREAD]);
mvaddstr(16, 32, "threads");
mvaddstr(17, 26, "threads");
attrset(CRT_colors[DEFAULT_COLOR]);
attrset(CRT_colors[HELP_BOLD]);
mvaddstr(23,0, "Press any key to return.");
attrset(CRT_colors[DEFAULT_COLOR]);
refresh();
CRT_readKey();
clear();
return HTOP_RECALCULATE | HTOP_REDRAW_BAR;
}
static Htop_Reaction actionUntagAll(State* st) {
for (int i = 0; i < Panel_size(st->panel); i++) {
Process* p = (Process*) Panel_get(st->panel, i);
p->tag = false;
}
return HTOP_REFRESH;
}
static Htop_Reaction actionTagAllChildren(State* st) {
Process* p = (Process*) Panel_getSelected(st->panel);
if (!p) return HTOP_OK;
tagAllChildren(st->panel, p);
return HTOP_OK;
}
static Htop_Reaction actionShowEnvScreen(State* st) {
Process* p = (Process*) Panel_getSelected(st->panel);
if (!p) return HTOP_OK;
EnvScreen* es = EnvScreen_new(p);
InfoScreen_run((InfoScreen*)es);
EnvScreen_delete((Object*)es);
clear();
CRT_enableDelay();
return HTOP_REFRESH | HTOP_REDRAW_BAR;
}
void Action_setBindings(Htop_Action* keys) {
keys[KEY_RESIZE] = actionResize;
keys['M'] = actionSortByMemory;
keys['T'] = actionSortByTime;
keys['P'] = actionSortByCPU;
keys['H'] = actionToggleUserlandThreads;
keys['K'] = actionToggleKernelThreads;
keys['p'] = actionToggleProgramPath;
keys['t'] = actionToggleTreeView;
keys[KEY_F(5)] = actionToggleTreeView;
keys[KEY_F(4)] = actionIncFilter;
keys['\\'] = actionIncFilter;
keys[KEY_F(3)] = actionIncSearch;
keys['/'] = actionIncSearch;
keys[']'] = actionHigherPriority;
keys[KEY_F(7)] = actionHigherPriority;
keys['['] = actionLowerPriority;
keys[KEY_F(8)] = actionLowerPriority;
keys['I'] = actionInvertSortOrder;
keys[KEY_F(6)] = actionExpandCollapseOrSortColumn;
keys[KEY_F(18)] = actionExpandCollapseOrSortColumn;
keys['<'] = actionSetSortColumn;
keys[','] = actionSetSortColumn;
keys['>'] = actionSetSortColumn;
keys['.'] = actionSetSortColumn;
keys[KEY_F(10)] = actionQuit;
keys['q'] = actionQuit;
keys['a'] = actionSetAffinity;
keys[KEY_F(9)] = actionKill;
keys['k'] = actionKill;
keys[KEY_RECLICK] = actionExpandOrCollapse;
keys['+'] = actionExpandOrCollapse;
keys['='] = actionExpandOrCollapse;
keys['-'] = actionExpandOrCollapse;
keys['u'] = actionFilterByUser;
keys['F'] = actionFollow;
keys['S'] = actionSetup;
keys['C'] = actionSetup;
keys[KEY_F(2)] = actionSetup;
keys['l'] = actionLsof;
keys['s'] = actionStrace;
keys[' '] = actionTag;
keys['\014'] = actionRedraw; // Ctrl+L
keys[KEY_
33F3
F(1)] = actionHelp;
keys['h'] = actionHelp;
keys['?'] = actionHelp;
keys['U'] = actionUntagAll;
keys['c'] = actionTagAllChildren;
keys['e'] = actionShowEnvScreen;
}