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Copy pathProcessList.c
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447 lines (390 loc) · 13 KB
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/*
htop - ProcessList.c
(C) 2004,2005 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "ProcessList.h"
#include "Platform.h"
#include "CRT.h"
#include "StringUtils.h"
#include "PluginAPI.h"
#include <stdlib.h>
#include <string.h>
/*{
#include "Vector.h"
#include "Hashtable.h"
#include "UsersTable.h"
#include "Panel.h"
#include "Process.h"
#include "Settings.h"
#ifdef HAVE_LIBHWLOC
#include <hwloc.h>
#endif
#ifdef HAVE_LUA
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#endif
#ifndef MAX_NAME
#define MAX_NAME 128
#endif
#ifndef MAX_READ
#define MAX_READ 2048
#endif
struct ProcessList_ {
Settings* settings;
Vector* processes;
Vector* processes2;
Hashtable* processTable;
UsersTable* usersTable;
Panel* panel;
int following;
uid_t userId;
const char* incFilter;
Hashtable* pidWhiteList;
#ifdef HAVE_LIBHWLOC
hwloc_topology_t topology;
bool topologyOk;
#endif
int totalTasks;
int runningTasks;
int userlandThreads;
int kernelThreads;
unsigned long long int totalMem;
unsigned long long int usedMem;
unsigned long long int freeMem;
unsigned long long int sharedMem;
unsigned long long int buffersMem;
unsigned long long int cachedMem;
unsigned long long int totalSwap;
unsigned long long int usedSwap;
unsigned long long int freeSwap;
int cpuCount;
#ifdef HAVE_LUA
lua_State* L;
#endif
};
ProcessList* ProcessList_new(UsersTable* ut, Hashtable* pidWhiteList, uid_t userId);
void ProcessList_delete(ProcessList* pl);
void ProcessList_goThroughEntries(ProcessList* pl);
}*/
ProcessList* ProcessList_init(ProcessList* this, ObjectClass* klass, UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
this->processes = Vector_new(klass, true, DEFAULT_SIZE);
this->processTable = Hashtable_new(140, false);
this->usersTable = usersTable;
this->pidWhiteList = pidWhiteList;
this->userId = userId;
// tree-view auxiliary buffer
this->processes2 = Vector_new(klass, true, DEFAULT_SIZE);
// set later by platform-specific code
this->cpuCount = 0;
#ifdef HAVE_LIBHWLOC
this->topologyOk = false;
int topoErr = hwloc_topology_init(&this->topology);
if (topoErr == 0) {
topoErr = hwloc_topology_load(this->topology);
}
if (topoErr == 0) {
this->topologyOk = true;
}
#endif
this->following = -1;
return this;
}
void ProcessList_done(ProcessList* this) {
#ifdef HAVE_LIBHWLOC
if (this->topologyOk) {
hwloc_topology_destroy(this->topology);
}
#endif
#ifdef HAVE_LUA
lua_close(this->L);
#endif
Hashtable_delete(this->processTable);
Vector_delete(this->processes);
Vector_delete(this->processes2);
}
#ifdef HAVE_LUA
void ProcessList_initPlugins(ProcessList* this) {
lua_State* L = luaL_newstate();
luaL_openlibs(L);
this->L = L;
luaL_requiref(L, "htop", PluginAPI_new, 0);
lua_pop(L, 1);
for (int i = 0; i < this->settings->nPlugins; i++) {
char* plugin = this->settings->plugins[i];
lua_getglobal(L, "require");
lua_pushliteral(L, "htop-plugins.");
lua_pushstring(L, plugin);
lua_concat(L, 2);
lua_pcall(L, 1, 1, 0);
lua_pop(L, 1);
}
}
#endif
void ProcessList_setPanel(ProcessList* this, Panel* panel) {
this->panel = panel;
}
void ProcessList_printHeader(ProcessList* this, RichString* header) {
RichString_prune(header);
ProcessField* fields = this->settings->ss->fields;
for (int i = 0; fields[i]; i++) {
unsigned int key = fields[i];
const char* field;
#ifdef HAVE_LUA
if (key > 1000) {
lua_State* L = this->L;
lua_getfield(L, LUA_REGISTRYINDEX, "htop_columns");
lua_geti(L, -1, key - 1000);
ProcessFieldData* pfd = (ProcessFieldData*) lua_touserdata(L, -1);
field = pfd->title;
lua_pop(L, 2);
} else
#endif
{
field = Process_fields[key].title;
}
if (!field) 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);
}
}
void ProcessList_add(ProcessList* this, Process* p) {
assert(Vector_indexOf(this->processes, p, Process_pidCompare) == -1);
assert(Hashtable_get(this->processTable, p->pid) == NULL);
Vector_add(this->processes, p);
Hashtable_put(this->processTable, p->pid, p);
assert(Vector_indexOf(this->processes, p, Process_pidCompare) != -1);
assert(Hashtable_get(this->processTable, p->pid) != NULL);
assert(Hashtable_count(this->processTable) == Vector_count(this->processes));
}
void ProcessList_remove(ProcessList* this, Process* p) {
assert(Vector_indexOf(this->processes, p, Process_pidCompare) != -1);
assert(Hashtable_get(this->processTable, p->pid) != NULL);
Process* pp = Hashtable_remove(this->processTable, p->pid);
assert(pp == p); (void)pp;
unsigned int pid = p->pid;
int idx = Vector_indexOf(this->processes, p, Process_pidCompare);
assert(idx != -1);
if (idx >= 0) Vector_remove(this->processes, idx);
assert(Hashtable_get(this->processTable, pid) == NULL); (void)pid;
assert(Hashtable_count(this->processTable) == Vector_count(this->processes));
}
Process* ProcessList_get(ProcessList* this, int idx) {
return (Process*) (Vector_get(this->processes, idx));
}
int ProcessList_size(ProcessList* this) {
return (Vector_size(this->processes));
}
static void ProcessList_buildTree(ProcessList* this, pid_t pid, int level, int indent, int direction, bool show) {
Vector* children = Vector_new(Class(Process), false, DEFAULT_SIZE);
for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
Process* process = (Process*) (Vector_get(this->processes, i));
if (process->show && Process_isChildOf(process, pid)) {
process = (Process*) (Vector_take(this->processes, i));
Vector_add(children, process);
}
}
int size = Vector_size(children);
for (int i = 0; i < size; i++) {
Process* process = (Process*) (Vector_get(children, i));
if (!show)
process->show = false;
int s = this->processes2->items;
if (direction == 1)
Vector_add(this->processes2, process);
else
Vector_insert(this->processes2, 0, process);
assert(this->processes2->items == s+1); (void)s;
int nextIndent = indent | (1 << level);
ProcessList_buildTree(this, process->pid, level+1, (i < size - 1) ? nextIndent : indent, direction, show ? process->showChildren : false);
if (i == size - 1)
process->indent = -nextIndent;
else
process->indent = nextIndent;
}
Vector_delete(children);
}
void ProcessList_sort(ProcessList* this) {
if (!this->settings->ss->treeView) {
Vector_insertionSort(this->processes);
} else {
// Save settings
int direction = this->settings->ss->direction;
int sortKey = this->settings->ss->sortKey;
// Sort by PID
this->settings->ss->sortKey = PID;
this->settings->ss->direction = 1;
Vector_quickSort(this->processes);
// Restore settings
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;
while ((size = Vector_size(this->processes))) {
int i;
for (i = 0; i < size; i++) {
Process* process = (Process*)(Vector_get(this->processes, i));
// Immediately consume not shown processes
if (!process->show) {
process = (Process*)(Vector_take(this->processes, i));
process->indent = 0;
Vector_add(this->processes2, process);
ProcessList_buildTree(this, process->pid, 0, 0, direction, false);
break;
}
pid_t ppid = process->tgid == process->pid ? process->ppid : process->tgid;
// Bisect the process vector to find parent
int l = 0, r = size;
while (l < r) {
int c = (l + r) / 2;
pid_t pid = ((Process*)(Vector_get(this->processes, c)))->pid;
if (ppid == pid) {
break;
} else if (ppid < pid) {
r = c;
} else {
l = c + 1;
}
}
// If parent not found, then construct the tree with this root
if (l >= r) {
process = (Process*)(Vector_take(this->processes, i));
process->indent = 0;
Vector_add(this->processes2, process);
ProcessList_buildTree(this, process->pid, 0, 0, direction, process->showChildren);
break;
}
}
// There should be no loop in the process tree
assert(i < size);
}
assert(Vector_size(this->processes2) == vsize); (void)vsize;
assert(Vector_size(this->processes) == 0);
// Swap listings around
Vector* t = this->processes;
this->processes = this->processes2;
this->processes2 = t;
}
}
ProcessField ProcessList_keyAt(ProcessList* this, int at) {
int x = 0;
ProcessField* fields = this->settings->ss->fields;
ProcessField field;
for (int i = 0; (field = fields[i]); i++) {
const char* title = Process_fields[field].title;
if (!title) title = "- ";
int len = strlen(title);
if (at >= x && at <= x + len) {
return field;
}
x += len;
}
return COMM;
}
void ProcessList_expandTree(ProcessList* this) {
int size = Vector_size(this->processes);
for (int i = 0; i < size; i++) {
Process* process = (Process*) Vector_get(this->processes, i);
process->showChildren = true;
}
}
void ProcessList_rebuildPanel(ProcessList* this) {
const char* incFilter = this->incFilter;
int currPos = Panel_getSelectedIndex(this->panel);
pid_t currPid = this->following != -1 ? this->following : 0;
int currScrollV = this->panel->scrollV;
Panel_prune(this->panel);
int size = ProcessList_size(this);
int idx = 0;
for (int i = 0; i < size; i++) {
bool hidden = false;
Process* p = ProcessList_get(this, i);
if ( (!p->show)
|| (this->userId != (uid_t) -1 && (p->st_uid != this->userId))
|| (incFilter && !(String_contains_i(p->comm, incFilter)))
|| (this->pidWhiteList && !Hashtable_get(this->pidWhiteList, p->tgid)) )
hidden = true;
if (!hidden) {
Panel_set(this->panel, idx, (Object*)p);
if ((this->following == -1 && idx == currPos) || (this->following != -1 && p->pid == currPid)) {
Panel_setSelected(this->panel, idx);
this->panel->scrollV = currScrollV;
}
idx++;
}
}
}
Process* ProcessList_getProcess(ProcessList* this, pid_t pid, bool* isNew) {
Process* proc = (Process*) Hashtable_get(this->processTable, pid);
if (proc) {
*isNew = false;
assert(Vector_indexOf(this->processes, proc, Process_pidCompare) != -1);
assert(proc->pid == pid);
} else {
*isNew = true;
proc = Process_new(this->settings);
assert(proc->comm == NULL);
proc->pid = pid;
}
return proc;
}
void ProcessList_scan(ProcessList* this) {
// mark all process as "dirty"
for (int i = 0; i < Vector_size(this->processes); i++) {
Process* p = (Process*) Vector_get(this->processes, i);
p->updated = false;
p->show = true;
}
this->totalTasks = 0;
this->userlandThreads = 0;
this->kernelThreads = 0;
this->runningTasks = 0;
ProcessList_goThroughEntries(this);
for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
Process* p = (Process*) Vector_get(this->processes, i);
if (p->updated == false)
ProcessList_remove(this, p);
else
p->updated = false;
}
}
void ProcessList_scanProcess(ProcessList* this, pid_t pid, ProcessScanData* psd) {
Settings* settings = this->settings;
bool isNew = false;
Process* proc = ProcessList_getProcess(this, pid, &isNew);
bool ok = Process_update(proc, isNew, this, psd);
if (ok) {
proc->show = ! ((settings->hideKernelThreads && Process_isKernelThread(proc)) ||
(settings->hideUserlandThreads && Process_isUserlandThread(proc)));
if (isNew) {
ProcessList_add(this, proc);
}
if (isNew || proc->st_uid != proc->old_st_uid) {
proc->user = UsersTable_getRef(this->usersTable, proc->st_uid);
proc->old_st_uid = proc->st_uid;
}
this->totalTasks++;
if (proc->state == 'R') {
this->runningTasks++;
}
if (Process_isThread(proc)) {
if (Process_isKernelThread(proc)) {
this->kernelThreads++;
} else {
this->userlandThreads++;
}
}
proc->updated = true;
} else {
if (isNew) {
Process_delete((Object*)proc);
} else {
ProcessList_remove(this, proc);
}
}
}