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-rw-r--r--Action.c948
1 files changed, 948 insertions, 0 deletions
diff --git a/Action.c b/Action.c
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+++ b/Action.c
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+/*
+htop - Action.c
+(C) 2015 Hisham H. Muhammad
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "Action.h"
+
+#include <assert.h>
+#include <pwd.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "CRT.h"
+#include "CategoriesPanel.h"
+#include "CommandScreen.h"
+#include "DynamicColumn.h"
+#include "EnvScreen.h"
+#include "FunctionBar.h"
+#include "Hashtable.h"
+#include "IncSet.h"
+#include "InfoScreen.h"
+#include "ListItem.h"
+#include "Macros.h"
+#include "MainPanel.h"
+#include "OpenFilesScreen.h"
+#include "Process.h"
+#include "ProcessLocksScreen.h"
+#include "ProvideCurses.h"
+#include "Row.h"
+#include "RowField.h"
+#include "Scheduling.h"
+#include "ScreenManager.h"
+#include "SignalsPanel.h"
+#include "Table.h"
+#include "TraceScreen.h"
+#include "UsersTable.h"
+#include "Vector.h"
+#include "XUtils.h"
+
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+#include "Affinity.h"
+#include "AffinityPanel.h"
+#endif
+
+
+Object* Action_pickFromVector(State* st, Panel* list, int x, bool follow) {
+ MainPanel* mainPanel = st->mainPanel;
+ Header* header = st->header;
+ Machine* host = st->host;
+
+ int y = ((Panel*)mainPanel)->y;
+ ScreenManager* scr = ScreenManager_new(header, host, st, false);
+ scr->allowFocusChange = false;
+ ScreenManager_add(scr, list, x);
+ ScreenManager_add(scr, (Panel*)mainPanel, -1);
+ Panel* panelFocus;
+ int ch;
+ bool unfollow = false;
+ int row = follow ? MainPanel_selectedRow(mainPanel) : -1;
+ if (follow && host->activeTable->following == -1) {
+ host->activeTable->following = row;
+ unfollow = true;
+ }
+ ScreenManager_run(scr, &panelFocus, &ch, NULL);
+ if (unfollow) {
+ host->activeTable->following = -1;
+ }
+ ScreenManager_delete(scr);
+ Panel_move((Panel*)mainPanel, 0, y);
+ Panel_resize((Panel*)mainPanel, COLS, LINES - y - 1);
+ if (panelFocus == list && ch == 13) {
+ if (follow) {
+ const Row* selected = (const Row*)Panel_getSelected((Panel*)mainPanel);
+ if (selected && selected->id == row)
+ return Panel_getSelected(list);
+
+ beep();
+ } else {
+ return Panel_getSelected(list);
+ }
+ }
+
+ return NULL;
+}
+
+// ----------------------------------------
+
+static void Action_runSetup(State* st) {
+ const Settings* settings = st->host->settings;
+ ScreenManager* scr = ScreenManager_new(st->header, st->host, st, true);
+ CategoriesPanel_new(scr, st->header, st->host);
+ ScreenManager_run(scr, NULL, NULL, "Setup");
+ ScreenManager_delete(scr);
+ if (settings->changed) {
+ CRT_setMouse(settings->enableMouse);
+ Header_writeBackToSettings(st->header);
+ }
+}
+
+static bool changePriority(MainPanel* panel, int delta) {
+ bool anyTagged;
+ bool ok = MainPanel_foreachRow(panel, Process_rowChangePriorityBy, (Arg) { .i = delta }, &anyTagged);
+ if (!ok)
+ beep();
+ return anyTagged;
+}
+
+static void addUserToVector(ht_key_t key, void* userCast, void* panelCast) {
+ const char* user = userCast;
+ Panel* panel = panelCast;
+ Panel_add(panel, (Object*) ListItem_new(user, key));
+}
+
+bool Action_setUserOnly(const char* userName, uid_t* userId) {
+ const struct passwd* user = getpwnam(userName);
+ if (user) {
+ *userId = user->pw_uid;
+ return true;
+ }
+ *userId = (uid_t)-1;
+ return false;
+}
+
+static void tagAllChildren(Panel* panel, Row* parent) {
+ parent->tag = true;
+ int parent_id = parent->id;
+ for (int i = 0; i < Panel_size(panel); i++) {
+ Row* row = (Row*) Panel_get(panel, i);
+ if (!row->tag && Row_isChildOf(row, parent_id)) {
+ tagAllChildren(panel, row);
+ }
+ }
+}
+
+static bool expandCollapse(Panel* panel) {
+ Row* row = (Row*) Panel_getSelected(panel);
+ if (!row)
+ return false;
+
+ row->showChildren = !row->showChildren;
+ return true;
+}
+
+static bool collapseIntoParent(Panel* panel) {
+ const Row* r = (Row*) Panel_getSelected(panel);
+ if (!r)
+ return false;
+
+ int parent_id = Row_getGroupOrParent(r);
+ for (int i = 0; i < Panel_size(panel); i++) {
+ Row* row = (Row*) Panel_get(panel, i);
+ if (row->id == parent_id) {
+ row->showChildren = false;
+ Panel_setSelected(panel, i);
+ return true;
+ }
+ }
+ return false;
+}
+
+Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
+ ScreenSettings_setSortKey(settings->ss, (RowField) sortKey);
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_UPDATE_PANELHDR | HTOP_KEEP_FOLLOWING;
+}
+
+// ----------------------------------------
+
+static bool Action_writeableProcess(State* st) {
+ const Settings* settings = st->host->settings;
+ bool readonly = Settings_isReadonly() || settings->ss->dynamic;
+ return !readonly;
+}
+
+static bool Action_readableProcess(State* st) {
+ const Settings* settings = st->host->settings;
+ return !settings->ss->dynamic;
+}
+
+static Htop_Reaction actionSetSortColumn(State* st) {
+ Htop_Reaction reaction = HTOP_OK;
+ Panel* sortPanel = Panel_new(0, 0, 0, 0, Class(ListItem), true, FunctionBar_newEnterEsc("Sort ", "Cancel "));
+ Panel_setHeader(sortPanel, "Sort by");
+ Machine* host = st->host;
+ Settings* settings = host->settings;
+ const RowField* fields = settings->ss->fields;
+ Hashtable* dynamicColumns = settings->dynamicColumns;
+ for (int i = 0; fields[i]; i++) {
+ char* name = NULL;
+ if (fields[i] >= ROW_DYNAMIC_FIELDS) {
+ DynamicColumn* column = Hashtable_get(dynamicColumns, fields[i]);
+ if (!column)
+ continue;
+ name = xStrdup(column->caption ? column->caption : column->name);
+ } else {
+ name = String_trim(Process_fields[fields[i]].name);
+ }
+ Panel_add(sortPanel, (Object*) ListItem_new(name, fields[i]));
+ if (fields[i] == ScreenSettings_getActiveSortKey(settings->ss))
+ Panel_setSelected(sortPanel, i);
+
+ free(name);
+ }
+ const ListItem* field = (const ListItem*) Action_pickFromVector(st, sortPanel, 14, false);
+ if (field) {
+ reaction |= Action_setSortKey(settings, field->key);
+ }
+ Object_delete(sortPanel);
+
+ host->activeTable->needsSort = true;
+
+ return reaction | HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionSortByPID(State* st) {
+ return Action_setSortKey(st->host->settings, PID);
+}
+
+static Htop_Reaction actionSortByMemory(State* st) {
+ return Action_setSortKey(st->host->settings, PERCENT_MEM);
+}
+
+static Htop_Reaction actionSortByCPU(State* st) {
+ return Action_setSortKey(st->host->settings, PERCENT_CPU);
+}
+
+static Htop_Reaction actionSortByTime(State* st) {
+ return Action_setSortKey(st->host->settings, TIME);
+}
+
+static Htop_Reaction actionToggleKernelThreads(State* st) {
+ Settings* settings = st->host->settings;
+ settings->hideKernelThreads = !settings->hideKernelThreads;
+ settings->lastUpdate++;
+
+ Machine_scanTables(st->host); // needed to not have a visible delay showing wrong data
+
+ return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionToggleUserlandThreads(State* st) {
+ Settings* settings = st->host->settings;
+ settings->hideUserlandThreads = !settings->hideUserlandThreads;
+ settings->lastUpdate++;
+
+ Machine_scanTables(st->host); // needed to not have a visible delay showing wrong data
+
+ return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionToggleRunningInContainer(State* st) {
+ Settings* settings = st->host->settings;
+ settings->hideRunningInContainer = !settings->hideRunningInContainer;
+ settings->lastUpdate++;
+
+ return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionToggleProgramPath(State* st) {
+ Settings* settings = st->host->settings;
+ settings->showProgramPath = !settings->showProgramPath;
+ settings->lastUpdate++;
+
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionToggleMergedCommand(State* st) {
+ Settings* settings = st->host->settings;
+ settings->showMergedCommand = !settings->showMergedCommand;
+ settings->lastUpdate++;
+
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionToggleTreeView(State* st) {
+ Machine* host = st->host;
+ ScreenSettings* ss = host->settings->ss;
+ ss->treeView = !ss->treeView;
+
+ if (!ss->allBranchesCollapsed)
+ Table_expandTree(host->activeTable);
+
+ host->activeTable->needsSort = true;
+
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionToggleHideMeters(State* st) {
+ st->hideMeters = !st->hideMeters;
+ return HTOP_RESIZE | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionExpandOrCollapseAllBranches(State* st) {
+ Machine* host = st->host;
+ ScreenSettings* ss = host->settings->ss;
+ if (!ss->treeView) {
+ return HTOP_OK;
+ }
+ ss->allBranchesCollapsed = !ss->allBranchesCollapsed;
+ if (ss->allBranchesCollapsed)
+ Table_collapseAllBranches(host->activeTable);
+ else
+ Table_expandTree(host->activeTable);
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
+}
+
+static Htop_Reaction actionIncFilter(State* st) {
+ Machine* host = st->host;
+ IncSet* inc = (st->mainPanel)->inc;
+ IncSet_activate(inc, INC_FILTER, (Panel*)st->mainPanel);
+ host->activeTable->incFilter = IncSet_filter(inc);
+ return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionIncSearch(State* st) {
+ IncSet_reset(st->mainPanel->inc, INC_SEARCH);
+ IncSet_activate(st->mainPanel->inc, INC_SEARCH, (Panel*)st->mainPanel);
+ return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionHigherPriority(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ bool changed = changePriority(st->mainPanel, -1);
+ return changed ? HTOP_REFRESH : HTOP_OK;
+}
+
+static Htop_Reaction actionLowerPriority(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ bool changed = changePriority(st->mainPanel, 1);
+ return changed ? HTOP_REFRESH : HTOP_OK;
+}
+
+static Htop_Reaction actionInvertSortOrder(State* st) {
+ Machine* host = st->host;
+ ScreenSettings_invertSortOrder(host->settings->ss);
+ host->activeTable->needsSort = true;
+ return HTOP_REFRESH | HTOP_SAVE_SETTINGS | HTOP_KEEP_FOLLOWING | HTOP_UPDATE_PANELHDR;
+}
+
+static Htop_Reaction actionExpandOrCollapse(State* st) {
+ if (!st->host->settings->ss->treeView)
+ return HTOP_OK;
+
+ bool changed = expandCollapse((Panel*)st->mainPanel);
+ return changed ? HTOP_RECALCULATE : HTOP_OK;
+}
+
+static Htop_Reaction actionCollapseIntoParent(State* st) {
+ if (!st->host->settings->ss->treeView) {
+ return HTOP_OK;
+ }
+ bool changed = collapseIntoParent((Panel*)st->mainPanel);
+ return changed ? HTOP_RECALCULATE : HTOP_OK;
+}
+
+static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
+ return st->host->settings->ss->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
+}
+
+static inline void setActiveScreen(Settings* settings, State* st, unsigned int ssIdx) {
+ assert(settings->ssIndex == ssIdx);
+ Machine* host = st->host;
+
+ settings->ss = settings->screens[ssIdx];
+ if (!settings->ss->table)
+ settings->ss->table = host->processTable;
+ host->activeTable = settings->ss->table;
+
+ // set correct functionBar - readonly if requested, and/or with non-process screens
+ bool readonly = Settings_isReadonly() || (host->activeTable != host->processTable);
+ MainPanel_setFunctionBar(st->mainPanel, readonly);
+}
+
+static Htop_Reaction actionNextScreen(State* st) {
+ Settings* settings = st->host->settings;
+ settings->ssIndex++;
+ if (settings->ssIndex == settings->nScreens) {
+ settings->ssIndex = 0;
+ }
+ setActiveScreen(settings, st, settings->ssIndex);
+ return HTOP_UPDATE_PANELHDR | HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionPrevScreen(State* st) {
+ Settings* settings = st->host->settings;
+ if (settings->ssIndex == 0) {
+ settings->ssIndex = settings->nScreens - 1;
+ } else {
+ settings->ssIndex--;
+ }
+ setActiveScreen(settings, st, settings->ssIndex);
+ return HTOP_UPDATE_PANELHDR | HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+Htop_Reaction Action_setScreenTab(State* st, int x) {
+ Settings* settings = st->host->settings;
+ int s = 2;
+ for (unsigned int i = 0; i < settings->nScreens; i++) {
+ if (x < s) {
+ return 0;
+ }
+ const char* tab = settings->screens[i]->heading;
+ int len = strlen(tab);
+ if (x <= s + len + 1) {
+ settings->ssIndex = i;
+ setActiveScreen(settings, st, i);
+ return HTOP_UPDATE_PANELHDR | HTOP_REFRESH | HTOP_REDRAW_BAR;
+ }
+ s += len + 3;
+ }
+ return 0;
+}
+
+static Htop_Reaction actionQuit(ATTR_UNUSED State* st) {
+ return HTOP_QUIT;
+}
+
+static Htop_Reaction actionSetAffinity(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ Machine* host = st->host;
+ if (host->activeCPUs == 1)
+ return HTOP_OK;
+
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+ const Row* row = (const Row*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!row)
+ return HTOP_OK;
+
+ Affinity* affinity1 = Affinity_rowGet(row, host);
+ if (!affinity1)
+ return HTOP_OK;
+
+ int width;
+ Panel* affinityPanel = AffinityPanel_new(host, affinity1, &width);
+ Affinity_delete(affinity1);
+
+ const void* set = Action_pickFromVector(st, affinityPanel, width, true);
+ if (set) {
+ Affinity* affinity2 = AffinityPanel_getAffinity(affinityPanel, host);
+ bool ok = MainPanel_foreachRow(st->mainPanel, Affinity_rowSet, (Arg) { .v = affinity2 }, NULL);
+ if (!ok)
+ beep();
+ Affinity_delete(affinity2);
+ }
+ Object_delete(affinityPanel);
+ return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+#else
+ return HTOP_OK;
+#endif
+}
+
+#ifdef SCHEDULER_SUPPORT
+static Htop_Reaction actionSetSchedPolicy(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_KEEP_FOLLOWING;
+
+ static int preSelectedPolicy = SCHEDULINGPANEL_INITSELECTEDPOLICY;
+ static int preSelectedPriority = SCHEDULINGPANEL_INITSELECTEDPRIORITY;
+
+ Panel* schedPanel = Scheduling_newPolicyPanel(preSelectedPolicy);
+
+ const ListItem* policy;
+ for (;;) {
+ policy = (const ListItem*) Action_pickFromVector(st, schedPanel, 18, true);
+
+ if (!policy || policy->key != -1)
+ break;
+
+ Scheduling_togglePolicyPanelResetOnFork(schedPanel);
+ }
+
+ if (policy) {
+ preSelectedPolicy = policy->key;
+
+ Panel* prioPanel = Scheduling_newPriorityPanel(policy->key, preSelectedPriority);
+ if (prioPanel) {
+ const ListItem* prio = (const ListItem*) Action_pickFromVector(st, prioPanel, 14, true);
+ if (prio)
+ preSelectedPriority = prio->key;
+
+ Panel_delete((Object*) prioPanel);
+ }
+
+ SchedulingArg v = { .policy = preSelectedPolicy, .priority = preSelectedPriority };
+
+ bool ok = MainPanel_foreachRow(st->mainPanel, Scheduling_rowSetPolicy, (Arg) { .v = &v }, NULL);
+ if (!ok)
+ beep();
+ }
+
+ Panel_delete((Object*)schedPanel);
+
+ return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_KEEP_FOLLOWING;
+}
+#endif /* SCHEDULER_SUPPORT */
+
+static Htop_Reaction actionKill(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ static int preSelectedSignal = SIGNALSPANEL_INITSELECTEDSIGNAL;
+
+ Panel* signalsPanel = SignalsPanel_new(preSelectedSignal);
+ const ListItem* sgn = (ListItem*) Action_pickFromVector(st, signalsPanel, 14, true);
+ if (sgn && sgn->key != 0) {
+ preSelectedSignal = sgn->key;
+ Panel_setHeader((Panel*)st->mainPanel, "Sending...");
+ Panel_draw((Panel*)st->mainPanel, false, true, true, State_hideFunctionBar(st));
+ refresh();
+ bool ok = MainPanel_foreachRow(st->mainPanel, Process_rowSendSignal, (Arg) { .i = sgn->key }, NULL);
+ if (!ok) {
+ beep();
+ }
+ 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, Class(ListItem), true, FunctionBar_newEnterEsc("Show ", "Cancel "));
+ Panel_setHeader(usersPanel, "Show processes of:");
+ Machine* host = st->host;
+ UsersTable_foreach(host->usersTable, addUserToVector, usersPanel);
+ Vector_insertionSort(usersPanel->items);
+ ListItem* allUsers = ListItem_new("All users", -1);
+ Panel_insert(usersPanel, 0, (Object*) allUsers);
+ const ListItem* picked = (ListItem*) Action_pickFromVector(st, usersPanel, 19, false);
+ if (picked) {
+ if (picked == allUsers) {
+ host->userId = (uid_t)-1;
+ } else {
+ Action_setUserOnly(ListItem_getRef(picked), &host->userId);
+ }
+ }
+ Panel_delete((Object*)usersPanel);
+ return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
+}
+
+Htop_Reaction Action_follow(State* st) {
+ st->host->activeTable->following = MainPanel_selectedRow(st->mainPanel);
+ Panel_setSelectionColor((Panel*)st->mainPanel, PANEL_SELECTION_FOLLOW);
+ return HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionSetup(State* st) {
+ Action_runSetup(st);
+ return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR | HTOP_RESIZE;
+}
+
+static Htop_Reaction actionLsof(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!p)
+ return HTOP_OK;
+
+ assert(Object_isA((const Object*) p, (const ObjectClass*) &Process_class));
+
+ OpenFilesScreen* ofs = OpenFilesScreen_new(p);
+ InfoScreen_run((InfoScreen*)ofs);
+ OpenFilesScreen_delete((Object*)ofs);
+ clear();
+ CRT_enableDelay();
+ return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionShowLocks(State* st) {
+ if (!Action_readableProcess(st))
+ return HTOP_OK;
+
+ const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!p)
+ return HTOP_OK;
+
+ assert(Object_isA((const Object*) p, (const ObjectClass*) &Process_class));
+
+ ProcessLocksScreen* pls = ProcessLocksScreen_new(p);
+ InfoScreen_run((InfoScreen*)pls);
+ ProcessLocksScreen_delete((Object*)pls);
+ clear();
+ CRT_enableDelay();
+ return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionStrace(State* st) {
+ if (!Action_writeableProcess(st))
+ return HTOP_OK;
+
+ const Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!p)
+ return HTOP_OK;
+
+ assert(Object_isA((const Object*) p, (const ObjectClass*) &Process_class));
+
+ 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) {
+ Row* r = (Row*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!r)
+ return HTOP_OK;
+
+ Row_toggleTag(r);
+ Panel_onKey((Panel*)st->mainPanel, KEY_DOWN);
+ return HTOP_OK;
+}
+
+static Htop_Reaction actionRedraw(ATTR_UNUSED State* st) {
+ clear();
+ // HTOP_RECALCULATE here to make Ctrl-L also refresh the data and not only redraw
+ return HTOP_RECALCULATE | HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionTogglePauseUpdate(State* st) {
+ st->pauseUpdate = !st->pauseUpdate;
+ return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static const struct {
+ const char* key;
+ bool roInactive;
+ const char* info;
+} helpLeft[] = {
+ { .key = " #: ", .roInactive = false, .info = "hide/show header meters" },
+ { .key = " Tab: ", .roInactive = false, .info = "switch to next screen tab" },
+ { .key = " Arrows: ", .roInactive = false, .info = "scroll process list" },
+ { .key = " Digits: ", .roInactive = false, .info = "incremental PID search" },
+ { .key = " F3 /: ", .roInactive = false, .info = "incremental name search" },
+ { .key = " F4 \\: ", .roInactive = false, .info = "incremental name filtering" },
+ { .key = " F5 t: ", .roInactive = false, .info = "tree view" },
+ { .key = " p: ", .roInactive = false, .info = "toggle program path" },
+ { .key = " m: ", .roInactive = false, .info = "toggle merged command" },
+ { .key = " Z: ", .roInactive = false, .info = "pause/resume process updates" },
+ { .key = " u: ", .roInactive = false, .info = "show processes of a single user" },
+ { .key = " H: ", .roInactive = false, .info = "hide/show user process threads" },
+ { .key = " K: ", .roInactive = false, .info = "hide/show kernel threads" },
+ { .key = " O: ", .roInactive = false, .info = "hide/show processes in containers" },
+ { .key = " F: ", .roInactive = false, .info = "cursor follows process" },
+ { .key = " + - *: ", .roInactive = false, .info = "expand/collapse tree/toggle all" },
+ { .key = "N P M T: ", .roInactive = false, .info = "sort by PID, CPU%, MEM% or TIME" },
+ { .key = " I: ", .roInactive = false, .info = "invert sort order" },
+ { .key = " F6 > .: ", .roInactive = false, .info = "select sort column" },
+ { .key = NULL, .info = NULL }
+};
+
+static const struct {
+ const char* key;
+ bool roInactive;
+ const char* info;
+} helpRight[] = {
+ { .key = " S-Tab: ", .roInactive = false, .info = "switch to previous screen tab" },
+ { .key = " Space: ", .roInactive = false, .info = "tag process" },
+ { .key = " c: ", .roInactive = false, .info = "tag process and its children" },
+ { .key = " U: ", .roInactive = false, .info = "untag all processes" },
+ { .key = " F9 k: ", .roInactive = true, .info = "kill process/tagged processes" },
+ { .key = " F7 ]: ", .roInactive = true, .info = "higher priority (root only)" },
+ { .key = " F8 [: ", .roInactive = true, .info = "lower priority (+ nice)" },
+#if (defined(HAVE_LIBHWLOC) || defined(HAVE_AFFINITY))
+ { .key = " a: ", .roInactive = true, .info = "set CPU affinity" },
+#endif
+ { .key = " e: ", .roInactive = false, .info = "show process environment" },
+ { .key = " i: ", .roInactive = true, .info = "set IO priority" },
+ { .key = " l: ", .roInactive = true, .info = "list open files with lsof" },
+ { .key = " x: ", .roInactive = false, .info = "list file locks of process" },
+ { .key = " s: ", .roInactive = true, .info = "trace syscalls with strace" },
+ { .key = " w: ", .roInactive = false, .info = "wrap process command in multiple lines" },
+#ifdef SCHEDULER_SUPPORT
+ { .key = " Y: ", .roInactive = true, .info = "set scheduling policy" },
+#endif
+ { .key = " F2 C S: ", .roInactive = false, .info = "setup" },
+ { .key = " F1 h ?: ", .roInactive = false, .info = "show this help screen" },
+ { .key = " F10 q: ", .roInactive = false, .info = "quit" },
+ { .key = NULL, .info = NULL }
+};
+
+static inline void addattrstr( int attr, const char* str) {
+ attrset(attr);
+ addstr(str);
+}
+
+static Htop_Reaction actionHelp(State* st) {
+ clear();
+ attrset(CRT_colors[HELP_BOLD]);
+
+ for (int i = 0; i < LINES - 1; i++)
+ mvhline(i, 0, ' ', COLS);
+
+ int line = 0;
+
+ mvaddstr(line++, 0, "htop " VERSION " - " COPYRIGHT);
+ mvaddstr(line++, 0, "Released under the GNU GPLv2+. See 'man' page for more info.");
+
+ attrset(CRT_colors[DEFAULT_COLOR]);
+ line++;
+ mvaddstr(line++, 0, "CPU usage bar: ");
+
+#define addbartext(attr, prefix, text) \
+ do { \
+ addattrstr(CRT_colors[DEFAULT_COLOR], prefix); \
+ addattrstr(attr, text); \
+ } while(0)
+
+ addattrstr(CRT_colors[BAR_BORDER], "[");
+ addbartext(CRT_colors[CPU_NICE_TEXT], "", "low");
+ addbartext(CRT_colors[CPU_NORMAL], "/", "normal");
+ addbartext(CRT_colors[CPU_SYSTEM], "/", "kernel");
+ if (st->host->settings->detailedCPUTime) {
+ addbartext(CRT_colors[CPU_IRQ], "/", "irq");
+ addbartext(CRT_colors[CPU_SOFTIRQ], "/", "soft-irq");
+ addbartext(CRT_colors[CPU_STEAL], "/", "steal");
+ addbartext(CRT_colors[CPU_GUEST], "/", "guest");
+ addbartext(CRT_colors[CPU_IOWAIT], "/", "io-wait");
+ addbartext(CRT_colors[BAR_SHADOW], " ", "used%");
+ } else {
+ addbartext(CRT_colors[CPU_GUEST], "/", "guest");
+ addbartext(CRT_colors[BAR_SHADOW], " ", "used%");
+ }
+ addattrstr(CRT_colors[BAR_BORDER], "]");
+
+ attrset(CRT_colors[DEFAULT_COLOR]);
+ mvaddstr(line++, 0, "Memory bar: ");
+ addattrstr(CRT_colors[BAR_BORDER], "[");
+ addbartext(CRT_colors[MEMORY_USED], "", "used");
+ addbartext(CRT_colors[MEMORY_SHARED], "/", "shared");
+ addbartext(CRT_colors[MEMORY_COMPRESSED], "/", "compressed");
+ addbartext(CRT_colors[MEMORY_BUFFERS_TEXT], "/", "buffers");
+ addbartext(CRT_colors[MEMORY_CACHE], "/", "cache");
+ addbartext(CRT_colors[BAR_SHADOW], " ", "used");
+ addbartext(CRT_colors[BAR_SHADOW], "/", "total");
+ addattrstr(CRT_colors[BAR_BORDER], "]");
+
+ attrset(CRT_colors[DEFAULT_COLOR]);
+ mvaddstr(line++, 0, "Swap bar: ");
+ addattrstr(CRT_colors[BAR_BORDER], "[");
+ addbartext(CRT_colors[SWAP], "", "used");
+#ifdef HTOP_LINUX
+ addbartext(CRT_colors[SWAP_CACHE], "/", "cache");
+ addbartext(CRT_colors[SWAP_FRONTSWAP], "/", "frontswap");
+#else
+ addbartext(CRT_colors[SWAP_CACHE], " ", "");
+#endif
+ addbartext(CRT_colors[BAR_SHADOW], " ", "used");
+ addbartext(CRT_colors[BAR_SHADOW], "/", "total");
+ addattrstr(CRT_colors[BAR_BORDER], "]");
+
+ line++;
+
+#undef addbartext
+
+ attrset(CRT_colors[DEFAULT_COLOR]);
+ mvaddstr(line++, 0, "Type and layout of header meters are configurable in the setup screen.");
+ if (CRT_colorScheme == COLORSCHEME_MONOCHROME) {
+ mvaddstr(line, 0, "In monochrome, meters display as different chars, in order: |#*@$%&.");
+ }
+ line++;
+
+#define addattrstatestr(attr, state, desc) \
+ do { \
+ addattrstr(attr, state); \
+ addattrstr(CRT_colors[DEFAULT_COLOR], ": " desc); \
+ } while(0)
+
+ mvaddstr(line, 0, "Process state: ");
+ addattrstatestr(CRT_colors[PROCESS_RUN_STATE], "R", "running; ");
+ addattrstatestr(CRT_colors[PROCESS_SHADOW], "S", "sleeping; ");
+ addattrstatestr(CRT_colors[PROCESS_RUN_STATE], "t", "traced/stopped; ");
+ addattrstatestr(CRT_colors[PROCESS_D_STATE], "Z", "zombie; ");
+ addattrstatestr(CRT_colors[PROCESS_D_STATE], "D", "disk sleep");
+ attrset(CRT_colors[DEFAULT_COLOR]);
+
+#undef addattrstatestr
+
+ line += 2;
+
+ const bool readonly = Settings_isReadonly();
+
+ int item;
+ for (item = 0; helpLeft[item].key; item++) {
+ attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[DEFAULT_COLOR]);
+ mvaddstr(line + item, 10, helpLeft[item].info);
+ attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[HELP_BOLD]);
+ mvaddstr(line + item, 1, helpLeft[item].key);
+ if (String_eq(helpLeft[item].key, " H: ")) {
+ attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[PROCESS_THREAD]);
+ mvaddstr(line + item, 33, "threads");
+ } else if (String_eq(helpLeft[item].key, " K: ")) {
+ attrset((helpLeft[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[PROCESS_THREAD]);
+ mvaddstr(line + item, 27, "threads");
+ }
+ }
+ int leftHelpItems = item;
+
+ for (item = 0; helpRight[item].key; item++) {
+ attrset((helpRight[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[HELP_BOLD]);
+ mvaddstr(line + item, 43, helpRight[item].key);
+ attrset((helpRight[item].roInactive && readonly) ? CRT_colors[HELP_SHADOW] : CRT_colors[DEFAULT_COLOR]);
+ mvaddstr(line + item, 52, helpRight[item].info);
+ }
+ line += MAXIMUM(leftHelpItems, item);
+ line++;
+
+ attrset(CRT_colors[HELP_BOLD]);
+ mvaddstr(line++, 0, "Press any key to return.");
+ attrset(CRT_colors[DEFAULT_COLOR]);
+ refresh();
+ CRT_readKey();
+ clear();
+
+ return HTOP_RECALCULATE | HTOP_REDRAW_BAR | HTOP_KEEP_FOLLOWING;
+}
+
+static Htop_Reaction actionUntagAll(State* st) {
+ for (int i = 0; i < Panel_size((Panel*)st->mainPanel); i++) {
+ Row* row = (Row*) Panel_get((Panel*)st->mainPanel, i);
+ row->tag = false;
+ }
+ return HTOP_REFRESH;
+}
+
+static Htop_Reaction actionTagAllChildren(State* st) {
+ Row* row = (Row*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!row)
+ return HTOP_OK;
+
+ tagAllChildren((Panel*)st->mainPanel, row);
+ return HTOP_OK;
+}
+
+static Htop_Reaction actionShowEnvScreen(State* st) {
+ if (!Action_readableProcess(st))
+ return HTOP_OK;
+
+ Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!p)
+ return HTOP_OK;
+
+ assert(Object_isA((const Object*) p, (const ObjectClass*) &Process_class));
+
+ EnvScreen* es = EnvScreen_new(p);
+ InfoScreen_run((InfoScreen*)es);
+ EnvScreen_delete((Object*)es);
+ clear();
+ CRT_enableDelay();
+ return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+static Htop_Reaction actionShowCommandScreen(State* st) {
+ if (!Action_readableProcess(st))
+ return HTOP_OK;
+
+ Process* p = (Process*) Panel_getSelected((Panel*)st->mainPanel);
+ if (!p)
+ return HTOP_OK;
+
+ assert(Object_isA((const Object*) p, (const ObjectClass*) &Process_class));
+
+ CommandScreen* cmdScr = CommandScreen_new(p);
+ InfoScreen_run((InfoScreen*)cmdScr);
+ CommandScreen_delete((Object*)cmdScr);
+ clear();
+ CRT_enableDelay();
+ return HTOP_REFRESH | HTOP_REDRAW_BAR;
+}
+
+void Action_setBindings(Htop_Action* keys) {
+ keys[' '] = actionTag;
+ keys['#'] = actionToggleHideMeters;
+ keys['*'] = actionExpandOrCollapseAllBranches;
+ keys['+'] = actionExpandOrCollapse;
+ keys[','] = actionSetSortColumn;
+ keys['-'] = actionExpandOrCollapse;
+ keys['.'] = actionSetSortColumn;
+ keys['/'] = actionIncSearch;
+ keys['<'] = actionSetSortColumn;
+ keys['='] = actionExpandOrCollapse;
+ keys['>'] = actionSetSortColumn;
+ keys['?'] = actionHelp;
+ keys['C'] = actionSetup;
+ keys['F'] = Action_follow;
+ keys['H'] = actionToggleUserlandThreads;
+ keys['I'] = actionInvertSortOrder;
+ keys['K'] = actionToggleKernelThreads;
+ keys['M'] = actionSortByMemory;
+ keys['N'] = actionSortByPID;
+ keys['O'] = actionToggleRunningInContainer;
+ keys['P'] = actionSortByCPU;
+ keys['S'] = actionSetup;
+ keys['T'] = actionSortByTime;
+ keys['U'] = actionUntagAll;
+#ifdef SCHEDULER_SUPPORT
+ keys['Y'] = actionSetSchedPolicy;
+#endif
+ keys['Z'] = actionTogglePauseUpdate;
+ keys['['] = actionLowerPriority;
+ keys['\014'] = actionRedraw; // Ctrl+L
+ keys['\177'] = actionCollapseIntoParent;
+ keys['\\'] = actionIncFilter;
+ keys[']'] = actionHigherPriority;
+ keys['a'] = actionSetAffinity;
+ keys['c'] = actionTagAllChildren;
+ keys['e'] = actionShowEnvScreen;
+ keys['h'] = actionHelp;
+ keys['k'] = actionKill;
+ keys['l'] = actionLsof;
+ keys['m'] = actionToggleMergedCommand;
+ keys['p'] = actionToggleProgramPath;
+ keys['q'] = actionQuit;
+ keys['s'] = actionStrace;
+ keys['t'] = actionToggleTreeView;
+ keys['u'] = actionFilterByUser;
+ keys['w'] = actionShowCommandScreen;
+ keys['x'] = actionShowLocks;
+ keys[KEY_F(1)] = actionHelp;
+ keys[KEY_F(2)] = actionSetup;
+ keys[KEY_F(3)] = actionIncSearch;
+ keys[KEY_F(4)] = actionIncFilter;
+ keys[KEY_F(5)] = actionToggleTreeView;
+ keys[KEY_F(6)] = actionSetSortColumn;
+ keys[KEY_F(7)] = actionHigherPriority;
+ keys[KEY_F(8)] = actionLowerPriority;
+ keys[KEY_F(9)] = actionKill;
+ keys[KEY_F(10)] = actionQuit;
+ keys[KEY_F(18)] = actionExpandCollapseOrSortColumn;
+ keys[KEY_RECLICK] = actionExpandOrCollapse;
+ keys[KEY_SHIFT_TAB] = actionPrevScreen;
+ keys['\t'] = actionNextScreen;
+}