htop/Action.c
Bert Wesarg 94b8c2e714 fix width of AffinitPanel
The panel size of 15 includes the gap to the next panel, thus use 14 as
the minimum size and let the caller of `AffinityPanel_new` handle the
gap.
2020-08-26 22:03:11 +02:00

620 lines
21 KiB
C

/*
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, bool followProcess) {
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 = followProcess ? MainPanel_selectedPid((MainPanel*)panel) : -1;
if (followProcess && header->pl->following == -1) {
header->pl->following = pid;
unfollow = true;
}
ScreenManager_run(scr, &panelFocus, &ch);
if (unfollow) {
header->pl->following = -1;
}
ScreenManager_delete(scr);
Panel_move(panel, 0, y);
Panel_resize(panel, COLS, LINES-y-1);
if (panelFocus == list && ch == 13) {
if (followProcess) {
Process* selected = (Process*)Panel_getSelected(panel);
if (selected && selected->pid == pid)
return Panel_getSelected(list);
else
beep();
} else {
return Panel_getSelected(list);
}
}
return NULL;
}
// ----------------------------------------
static void Action_runSetup(Settings* settings, const Header* header, ProcessList* pl) {
ScreenManager* scr = ScreenManager_new(0, header->height, 0, -1, HORIZONTAL, header, settings, true);
CategoriesPanel* panelCategories = CategoriesPanel_new(scr, settings, (Header*) header, pl);
ScreenManager_add(scr, (Panel*) panelCategories, 16);
CategoriesPanel_makeMetersPage(panelCategories);
Panel* panelFocus;
int ch;
ScreenManager_run(scr, &panelFocus, &ch);
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, (Arg){ .i = delta }, &anyTagged);
if (!ok)
beep();
return anyTagged;
}
static void addUserToVector(int key, void* userCast, void* panelCast) {
char* user = (char*) userCast;
Panel* panel = (Panel*) panelCast;
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 && Process_isChildOf(p, ppid)) {
tagAllChildren(panel, p);
}
}
}
static bool expandCollapse(Panel* panel) {
Process* p = (Process*) Panel_getSelected(panel);
if (!p) return false;
p->showChildren = !p->showChildren;
return true;
}
static bool collapseIntoParent(Panel* panel) {
Process* p = (Process*) Panel_getSelected(panel);
if (!p) return false;
pid_t ppid = Process_getParentPid(p);
for (int i = 0; i < Panel_size(panel); i++) {
Process* q = (Process*) Panel_get(panel, i);
if (q->pid == ppid) {
q->showChildren = false;
Panel_setSelected(panel, i);
return true;
}
}
return false;
}
Htop_Reaction Action_setSortKey(Settings* settings, ProcessField sortKey) {
settings->sortKey = sortKey;
settings->direction = 1;
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, false);
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) {
clear();
Panel_resize(st->panel, COLS, LINES-(st->panel->y)-1);
return HTOP_REDRAW_BAR;
}
static Htop_Reaction actionSortByMemory(State* st) {
return Action_setSortKey(st->settings, PERCENT_MEM);
}
static Htop_Reaction actionSortByCPU(State* st) {
return Action_setSortKey(st->settings, PERCENT_CPU);
}
static Htop_Reaction actionSortByTime(State* st) {
return Action_setSortKey(st->settings, TIME);
}
static Htop_Reaction actionToggleKernelThreads(State* st) {
st->settings->hideKernelThreads = !st->settings->hideKernelThreads;
return HTOP_RECALCULATE | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionToggleUserlandThreads(State* st) {
st->settings->hideUserlandThreads = !st->settings->hideUserlandThreads;
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_reset(((MainPanel*)st->panel)->inc, INC_SEARCH);
IncSet_activate(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel);
return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionIncNext(State* st) {
IncSet_next(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel, (IncMode_GetPanelValue) MainPanel_getValue);
return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionIncPrev(State* st) {
IncSet_prev(((MainPanel*)st->panel)->inc, INC_SEARCH, st->panel, (IncMode_GetPanelValue) MainPanel_getValue);
return HTOP_REFRESH | HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionHigherPriority(State* st) {
bool changed = changePriority((MainPanel*)st->panel, -1);
return changed ? HTOP_REFRESH : HTOP_OK;
}
static Htop_Reaction actionLowerPriority(State* st) {
bool changed = changePriority((MainPanel*)st->panel, 1);
return changed ? HTOP_REFRESH : HTOP_OK;
}
static Htop_Reaction actionInvertSortOrder(State* st) {
Settings_invertSortOrder(st->settings);
return HTOP_REFRESH | HTOP_SAVE_SETTINGS;
}
static Htop_Reaction actionSetSortColumn(State* st) {
return sortBy(st);
}
static Htop_Reaction actionExpandOrCollapse(State* st) {
bool changed = expandCollapse(st->panel);
return changed ? HTOP_RECALCULATE : HTOP_OK;
}
static Htop_Reaction actionCollapseIntoParent(State* st) {
if (!st->settings->treeView) {
return HTOP_OK;
}
bool changed = collapseIntoParent(st->panel);
return changed ? HTOP_RECALCULATE : HTOP_OK;
}
static Htop_Reaction actionExpandCollapseOrSortColumn(State* st) {
return st->settings->treeView ? actionExpandOrCollapse(st) : actionSetSortColumn(st);
}
static Htop_Reaction actionQuit() {
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* affinity1 = Affinity_get(p, st->pl);
if (!affinity1) return HTOP_OK;
int width;
Panel* affinityPanel = AffinityPanel_new(st->pl, affinity1, &width);
width += 1; /* we add a gap between the panels */
Affinity_delete(affinity1);
void* set = Action_pickFromVector(st, affinityPanel, width, true);
if (set) {
Affinity* affinity2 = AffinityPanel_getAffinity(affinityPanel, st->pl);
bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) Affinity_set, (Arg){ .v = affinity2 }, NULL);
if (!ok) beep();
Affinity_delete(affinity2);
}
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, true);
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, (Arg){ .i = sgn->key }, NULL);
napms(500);
}
}
Panel_delete((Object*)signalsPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
static Htop_Reaction actionFilterByUser(State* st) {
Panel* usersPanel = Panel_new(0, 0, 0, 0, true, Class(ListItem), FunctionBar_newEnterEsc("Show ", "Cancel "));
Panel_setHeader(usersPanel, "Show processes of:");
UsersTable_foreach(st->ut, addUserToVector, usersPanel);
Vector_insertionSort(usersPanel->items);
ListItem* allUsers = ListItem_new("All users", -1);
Panel_insert(usersPanel, 0, (Object*) allUsers);
ListItem* picked = (ListItem*) Action_pickFromVector(st, usersPanel, 20, false);
if (picked) {
if (picked == allUsers) {
st->pl->userId = -1;
} else {
Action_setUserOnly(ListItem_getRef(picked), &(st->pl->userId));
}
}
Panel_delete((Object*)usersPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
Htop_Reaction Action_follow(State* st) {
st->pl->following = MainPanel_selectedPid((MainPanel*)st->panel);
Panel_setSelectionColor(st->panel, CRT_colors[PANEL_SELECTION_FOLLOW]);
return HTOP_KEEP_FOLLOWING;
}
static Htop_Reaction actionSetup(State* st) {
Action_runSetup(st->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 const struct { const char* key; const char* info; } helpLeft[] = {
{ .key = " Arrows: ", .info = "scroll process list" },
{ .key = " Digits: ", .info = "incremental PID search" },
{ .key = " F3 /: ", .info = "incremental name search" },
{ .key = " F4 \\: ",.info = "incremental name filtering" },
{ .key = " F5 t: ", .info = "tree view" },
{ .key = " p: ", .info = "toggle program path" },
{ .key = " u: ", .info = "show processes of a single user" },
{ .key = " H: ", .info = "hide/show user process threads" },
{ .key = " K: ", .info = "hide/show kernel threads" },
{ .key = " F: ", .info = "cursor follows process" },
{ .key = " F6 + -: ", .info = "expand/collapse tree" },
{ .key = " P M T: ", .info = "sort by CPU%, MEM% or TIME" },
{ .key = " I: ", .info = "invert sort order" },
{ .key = " F6 > .: ", .info = "select sort column" },
{ .key = NULL, .info = NULL }
};
static const struct { const char* key; const char* info; } helpRight[] = {
{ .key = " Space: ", .info = "tag process" },
{ .key = " c: ", .info = "tag process and its children" },
{ .key = " U: ", .info = "untag all processes" },
{ .key = " F9 k: ", .info = "kill process/tagged processes" },
{ .key = " F7 ]: ", .info = "higher priority (root only)" },
{ .key = " F8 [: ", .info = "lower priority (+ nice)" },
#if (HAVE_LIBHWLOC || HAVE_LINUX_AFFINITY)
{ .key = " a: ", .info = "set CPU affinity" },
#endif
{ .key = " e: ", .info = "show process environment" },
{ .key = " i: ", .info = "set IO priority" },
{ .key = " l: ", .info = "list open files with lsof" },
{ .key = " s: ", .info = "trace syscalls with strace" },
{ .key = " ", .info = "" },
{ .key = " F2 C S: ", .info = "setup" },
{ .key = " F1 h: ", .info = "show this help screen" },
{ .key = " F10 q: ", .info = "quit" },
{ .key = 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_SYSTEM], "kernel"); addstr("/");
addattrstr(CRT_colors[CPU_IRQ], "irq"); addstr("/");
addattrstr(CRT_colors[CPU_SOFTIRQ], "soft-irq"); addstr("/");
addattrstr(CRT_colors[CPU_STEAL], "steal"); addstr("/");
addattrstr(CRT_colors[CPU_GUEST], "guest"); addstr("/");
addattrstr(CRT_colors[CPU_IOWAIT], "io-wait");
addattrstr(CRT_colors[BAR_SHADOW], " used%");
} else {
addattrstr(CRT_colors[CPU_NICE_TEXT], "low-priority"); addstr("/");
addattrstr(CRT_colors[CPU_NORMAL], "normal"); addstr("/");
addattrstr(CRT_colors[CPU_SYSTEM], "kernel"); addstr("/");
addattrstr(CRT_colors[CPU_GUEST], "virtualiz");
addattrstr(CRT_colors[BAR_SHADOW], " used%");
}
addattrstr(CRT_colors[BAR_BORDER], "]");
attrset(CRT_colors[DEFAULT_COLOR]);
mvaddstr(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['n'] = actionIncNext;
keys['N'] = actionIncPrev;
keys[']'] = actionHigherPriority;
keys[KEY_F(7)] = actionHigherPriority;
keys['['] = actionLowerPriority;
keys[KEY_F(8)] = actionLowerPriority;
keys['I'] = actionInvertSortOrder;
keys[KEY_F(6)] = 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['\177'] = actionCollapseIntoParent;
keys['u'] = actionFilterByUser;
keys['F'] = Action_follow;
keys['S'] = actionSetup;
keys['C'] = actionSetup;
keys[KEY_F(2)] = actionSetup;
keys['l'] = actionLsof;
keys['s'] = actionStrace;
keys[' '] = actionTag;
keys['\014'] = actionRedraw; // Ctrl+L
keys[KEY_F(1)] = actionHelp;
keys['h'] = actionHelp;
keys['?'] = actionHelp;
keys['U'] = actionUntagAll;
keys['c'] = actionTagAllChildren;
keys['e'] = actionShowEnvScreen;
}