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htop/ProcessList.c

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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.
*/
#ifndef CONFIG_H
#define CONFIG_H
#include "config.h"
#endif
#include "ProcessList.h"
#include "Process.h"
#include "Vector.h"
#include "UsersTable.h"
#include "Hashtable.h"
#include "String.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <stdbool.h>
#include <sys/utsname.h>
#include <stdarg.h>
#include <math.h>
#include "debug.h"
#include <assert.h>
/*{
#ifndef PROCDIR
#define PROCDIR "/proc"
#endif
#ifndef PROCSTATFILE
#define PROCSTATFILE PROCDIR "/stat"
#endif
#ifndef PROCMEMINFOFILE
#define PROCMEMINFOFILE PROCDIR "/meminfo"
#endif
#ifndef MAX_NAME
#define MAX_NAME 128
#endif
#ifndef MAX_READ
#define MAX_READ 2048
#endif
}*/
/*{
#ifdef DEBUG_PROC
typedef int(*vxscanf)(void*, const char*, va_list);
#endif
typedef struct CPUData_ {
unsigned long long int totalTime;
unsigned long long int userTime;
unsigned long long int systemTime;
unsigned long long int systemAllTime;
unsigned long long int idleAllTime;
unsigned long long int idleTime;
unsigned long long int niceTime;
unsigned long long int ioWaitTime;
unsigned long long int irqTime;
unsigned long long int softIrqTime;
unsigned long long int stealTime;
unsigned long long int guestTime;
unsigned long long int totalPeriod;
unsigned long long int userPeriod;
unsigned long long int systemPeriod;
unsigned long long int systemAllPeriod;
unsigned long long int idleAllPeriod;
unsigned long long int idlePeriod;
unsigned long long int nicePeriod;
unsigned long long int ioWaitPeriod;
unsigned long long int irqPeriod;
unsigned long long int softIrqPeriod;
unsigned long long int stealPeriod;
unsigned long long int guestPeriod;
} CPUData;
typedef struct ProcessList_ {
Vector* processes;
Vector* processes2;
Hashtable* processTable;
UsersTable* usersTable;
int cpuCount;
int totalTasks;
int runningTasks;
CPUData* cpus;
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;
ProcessField* fields;
ProcessField sortKey;
int direction;
bool hideThreads;
bool shadowOtherUsers;
bool showThreadNames;
bool showingThreadNames;
bool hideKernelThreads;
bool hideUserlandThreads;
bool treeView;
bool highlightBaseName;
bool highlightMegabytes;
bool highlightThreads;
bool detailedCPUTime;
#ifdef DEBUG_PROC
FILE* traceFile;
#endif
} ProcessList;
}*/
static ProcessField defaultHeaders[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, M_SHARE, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
#ifdef DEBUG_PROC
#define ProcessList_read(this, buffer, format, ...) ProcessList_xread(this, (vxscanf) vsscanf, buffer, format, ## __VA_ARGS__ )
#define ProcessList_fread(this, file, format, ...) ProcessList_xread(this, (vxscanf) vfscanf, file, format, ## __VA_ARGS__ )
static FILE* ProcessList_fopen(ProcessList* this, const char* path, const char* mode) {
fprintf(this->traceFile, "[%s]\n", path);
return fopen(path, mode);
}
static inline int ProcessList_xread(ProcessList* this, vxscanf fn, void* buffer, char* format, ...) {
va_list ap;
va_start(ap, format);
int num = fn(buffer, format, ap);
va_end(format);
va_start(ap, format);
while (*format) {
char ch = *format;
char* c; int* d;
long int* ld; unsigned long int* lu;
long long int* lld; unsigned long long int* llu;
char** s;
if (ch != '%') {
fprintf(this->traceFile, "%c", ch);
format++;
continue;
}
format++;
switch(*format) {
case 'c': c = va_arg(ap, char*); fprintf(this->traceFile, "%c", *c); break;
case 'd': d = va_arg(ap, int*); fprintf(this->traceFile, "%d", *d); break;
case 's': s = va_arg(ap, char**); fprintf(this->traceFile, "%s", *s); break;
case 'l':
format++;
switch (*format) {
case 'd': ld = va_arg(ap, long int*); fprintf(this->traceFile, "%ld", *ld); break;
case 'u': lu = va_arg(ap, unsigned long int*); fprintf(this->traceFile, "%lu", *lu); break;
case 'l':
format++;
switch (*format) {
case 'd': lld = va_arg(ap, long long int*); fprintf(this->traceFile, "%lld", *lld); break;
case 'u': llu = va_arg(ap, unsigned long long int*); fprintf(this->traceFile, "%llu", *llu); break;
}
}
}
format++;
}
fprintf(this->traceFile, "\n");
va_end(format);
return num;
}
#else
#ifndef ProcessList_read
#define ProcessList_fopen(this, path, mode) fopen(path, mode)
#define ProcessList_read(this, buffer, format, ...) sscanf(buffer, format, ## __VA_ARGS__ )
#define ProcessList_fread(this, file, format, ...) fscanf(file, format, ## __VA_ARGS__ )
#endif
#endif
ProcessList* ProcessList_new(UsersTable* usersTable) {
ProcessList* this;
this = malloc(sizeof(ProcessList));
this->processes = Vector_new(PROCESS_CLASS, true, DEFAULT_SIZE, Process_compare);
this->processTable = Hashtable_new(70, false);
assert(Hashtable_count(this->processTable) == Vector_count(this->processes));
this->usersTable = usersTable;
/* tree-view auxiliary buffers */
this->processes2 = Vector_new(PROCESS_CLASS, true, DEFAULT_SIZE, Process_compare);
#ifdef DEBUG_PROC
this->traceFile = fopen("/tmp/htop-proc-trace", "w");
#endif
FILE* status = fopen(PROCSTATFILE, "r");
assert(status != NULL);
char buffer[256];
int cpus = -1;
do {
cpus++;
fgets(buffer, 255, status);
} while (String_startsWith(buffer, "cpu"));
fclose(status);
this->cpuCount = cpus - 1;
this->cpus = calloc(sizeof(CPUData), cpus);
for (int i = 0; i < cpus; i++) {
this->cpus[i].totalTime = 1;
this->cpus[i].totalPeriod = 1;
}
this->fields = calloc(sizeof(ProcessField), LAST_PROCESSFIELD+1);
// TODO: turn 'fields' into a Vector,
// (and ProcessFields into proper objects).
for (int i = 0; defaultHeaders[i]; i++) {
this->fields[i] = defaultHeaders[i];
}
this->sortKey = PERCENT_CPU;
this->direction = 1;
this->hideThreads = false;
this->shadowOtherUsers = false;
this->showThreadNames = true;
this->showingThreadNames = true;
this->hideKernelThreads = false;
this->hideUserlandThreads = false;
this->treeView = false;
this->highlightBaseName = false;
this->highlightMegabytes = false;
this->detailedCPUTime = false;
return this;
}
void ProcessList_delete(ProcessList* this) {
Hashtable_delete(this->processTable);
Vector_delete(this->processes);
Vector_delete(this->processes2);
free(this->cpus);
#ifdef DEBUG_PROC
fclose(this->traceFile);
#endif
free(this->fields);
free(this);
}
void ProcessList_invertSortOrder(ProcessList* this) {
if (this->direction == 1)
this->direction = -1;
else
this->direction = 1;
}
RichString ProcessList_printHeader(ProcessList* this) {
RichString out;
RichString_initVal(out);
ProcessField* fields = this->fields;
for (int i = 0; fields[i]; i++) {
const char* field = Process_fieldTitles[fields[i]];
if (this->sortKey == fields[i])
RichString_append(&out, CRT_colors[PANEL_HIGHLIGHT_FOCUS], field);
else
RichString_append(&out, CRT_colors[PANEL_HEADER_FOCUS], field);
}
return out;
}
static 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));
}
static 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(PROCESS_CLASS, false, DEFAULT_SIZE, Process_compare);
for (int i = Vector_size(this->processes) - 1; i >= 0; i--) {
Process* process = (Process*) (Vector_get(this->processes, i));
if (process->tgid == pid || (process->tgid == process->pid && process->ppid == 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) {
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;
if (i < size - 1)
nextIndent = indent | (1 << level);
ProcessList_buildTree(this, process->pid, level+1, nextIndent, direction, process->showChildren);
process->indent = indent | (1 << level);
} else {
ProcessList_remove(this, process);
}
}
Vector_delete(children);
}
void ProcessList_sort(ProcessList* this) {
if (!this->treeView) {
Vector_sort(this->processes);
} else {
// Save settings
int direction = this->direction;
int sortKey = this->sortKey;
// Sort by PID
this->sortKey = PID;
this->direction = 1;
Vector_sort(this->processes);
// Restore settings
this->sortKey = sortKey;
this->direction = direction;
// Take PID 1 as root and add to the new listing
int vsize = Vector_size(this->processes);
Process* init = (Process*) (Vector_take(this->processes, 0));
// This assertion crashes on hardened kernels.
// I wonder how well tree view works on those systems.
// assert(init->pid == 1);
init->indent = 0;
Vector_add(this->processes2, init);
// Recursively empty list
ProcessList_buildTree(this, init->pid, 0, 0, direction, true);
// Add leftovers
while (Vector_size(this->processes)) {
Process* p = (Process*) (Vector_take(this->processes, 0));
p->indent = 0;
Vector_add(this->processes2, p);
ProcessList_buildTree(this, p->pid, 0, 0, direction, p->showChildren);
}
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;
}
}
static int ProcessList_readStatFile(Process *proc, FILE *f, char *command) {
static char buf[MAX_READ];
unsigned long int zero;
int size = fread(buf, 1, MAX_READ, f);
if(!size) return 0;
assert(proc->pid == atoi(buf));
char *location = strchr(buf, ' ');
if(!location) return 0;
location += 2;
char *end = strrchr(location, ')');
if(!end) return 0;
int commsize = end - location;
memcpy(command, location, commsize);
command[commsize] = '\0';
location = end + 2;
#ifdef DEBUG_PROC
int num = ProcessList_read(this, location,
"%c %u %u %u %u %d %lu %lu %lu %lu "
"%lu %lu %lu %ld %ld %ld %ld %ld %ld "
"%lu %lu %ld %lu %lu %lu %lu %lu "
"%lu %lu %lu %lu %lu %lu %lu %lu "
"%d %d",
&proc->state, &proc->ppid, &proc->pgrp, &proc->session, &proc->tty_nr,
&proc->tpgid, &proc->flags,
&proc->minflt, &proc->cminflt, &proc->majflt, &proc->cmajflt,
&proc->utime, &proc->stime, &proc->cutime, &proc->cstime,
&proc->priority, &proc->nice, &proc->nlwp, &proc->itrealvalue,
&zero, &proc->vsize, &proc->rss, &proc->rlim,
&proc->startcode, &proc->endcode, &proc->startstack, &proc->kstkesp,
&proc->kstkeip, &proc->signal, &proc->blocked, &proc->sigignore,
&proc->sigcatch, &proc->wchan, &proc->nswap, &proc->cnswap,
&proc->exit_signal, &proc->processor);
#else
long int uzero;
int num = ProcessList_read(this, location,
"%c %d %u %u %u %d %lu %lu %lu %lu "
"%lu %lu %lu %ld %ld %ld %ld %ld %ld "
"%lu %lu %ld %lu %lu %lu %lu %lu "
"%lu %lu %lu %lu %lu %lu %lu %lu "
"%d %d",
&proc->state, &proc->ppid, &proc->pgrp, &proc->session, &proc->tty_nr,
&proc->tpgid, &proc->flags,
&zero, &zero, &zero, &zero,
&proc->utime, &proc->stime, &proc->cutime, &proc->cstime,
&proc->priority, &proc->nice, &proc->nlwp, &uzero,
&zero, &zero, &uzero, &zero,
&zero, &zero, &zero, &zero,
&zero, &zero, &zero, &zero,
&zero, &zero, &zero, &zero,
&proc->exit_signal, &proc->processor);
#endif
// This assert is always valid on 2.4, but reportedly not always valid on 2.6.
// TODO: Check if the semantics of this field has changed.
// assert(zero == 0);
if(num != 37) return 0;
return 1;
}
static bool ProcessList_readStatusFile(Process* proc, const char* dirname, char* name) {
char statusfilename[MAX_NAME+1];
statusfilename[MAX_NAME] = '\0';
snprintf(statusfilename, MAX_NAME, "%s/%s", dirname, name);
struct stat sstat;
int statok = stat(statusfilename, &sstat);
if (statok == -1)
return false;
proc->st_uid = sstat.st_uid;
struct tm date;
time_t ctime = sstat.st_ctime;
proc->starttime_ctime = ctime;
(void) localtime_r((time_t*) &ctime, &date);
strftime(proc->starttime_show, 7, ((ctime > time(NULL) - 86400) ? "%R " : "%b%d "), &date);
return true;
}
#ifdef HAVE_TASKSTATS
static void ProcessList_readIoFile(Process* proc, const char* dirname, char* name) {
char iofilename[MAX_NAME+1];
iofilename[MAX_NAME] = '\0';
snprintf(iofilename, MAX_NAME, "%s/%s/io", dirname, name);
FILE* io = ProcessList_fopen(this, iofilename, "r");
if (io) {
char buffer[256];
buffer[255] = '\0';
struct timeval tv;
gettimeofday(&tv,NULL);
unsigned long long now = tv.tv_sec*1000+tv.tv_usec/1000;
unsigned long long last_read = proc->io_read_bytes;
unsigned long long last_write = proc->io_write_bytes;
while (fgets(buffer, 255, io)) {
if (ProcessList_read(this, buffer, "rchar: %llu", &proc->io_rchar)) continue;
if (ProcessList_read(this, buffer, "wchar: %llu", &proc->io_wchar)) continue;
if (ProcessList_read(this, buffer, "syscr: %llu", &proc->io_syscr)) continue;
if (ProcessList_read(this, buffer, "syscw: %llu", &proc->io_syscw)) continue;
if (ProcessList_read(this, buffer, "read_bytes: %llu", &proc->io_read_bytes)) {
proc->io_rate_read_bps =
((double)(proc->io_read_bytes - last_read))/(((double)(now - proc->io_rate_read_time))/1000);
proc->io_rate_read_time = now;
continue;
}
if (ProcessList_read(this, buffer, "write_bytes: %llu", &proc->io_write_bytes)) {
proc->io_rate_write_bps =
((double)(proc->io_write_bytes - last_write))/(((double)(now - proc->io_rate_write_time))/1000);
proc->io_rate_write_time = now;
continue;
}
ProcessList_read(this, buffer, "cancelled_write_bytes: %llu", &proc->io_cancelled_write_bytes);
}
fclose(io);
}
}
#endif
static bool ProcessList_processEntries(ProcessList* this, const char* dirname, Process* parent, pid_t parentPid, float period) {
DIR* dir;
struct dirent* entry;
dir = opendir(dirname);
if (!dir) return false;
int cpus = this->cpuCount;
bool showUserlandThreads = !this->hideUserlandThreads;
while ((entry = readdir(dir)) != NULL) {
char* name = entry->d_name;
int pid;
// filename is a number: process directory
pid = atoi(name);
if (pid == parentPid)
continue;
// The RedHat kernel hides threads with a dot.
// I believe this is non-standard.
bool isThread = false;
if ((!this->hideThreads) && pid == 0 && name[0] == '.') {
char* tname = name + 1;
pid = atoi(tname);
if (pid > 0)
isThread = true;
}
if (pid > 0) {
FILE* status;
char statusfilename[MAX_NAME+1];
char command[PROCESS_COMM_LEN + 1];
Process* process = NULL;
Process* existingProcess = (Process*) Hashtable_get(this->processTable, pid);
if (existingProcess) {
assert(Vector_indexOf(this->processes, existingProcess, Process_pidCompare) != -1);
process = existingProcess;
assert(process->pid == pid);
} else {
if (parent && parent->pid == pid) {
process = parent;
} else {
process = Process_new(this);
assert(process->comm == NULL);
process->pid = pid;
}
}
process->tgid = parent ? parent->pid : pid;
if (showUserlandThreads && (!parent || pid != parent->pid)) {
char subdirname[MAX_NAME+1];
snprintf(subdirname, MAX_NAME, "%s/%s/task", dirname, name);
ProcessList_processEntries(this, subdirname, process, pid, period);
}
#ifdef HAVE_TASKSTATS
ProcessList_readIoFile(process, dirname, name);
#endif
process->updated = true;
if (!existingProcess)
if (! ProcessList_readStatusFile(process, dirname, name))
goto errorReadingProcess;
snprintf(statusfilename, MAX_NAME, "%s/%s/statm", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if(!status) {
goto errorReadingProcess;
}
int num = ProcessList_fread(this, status, "%d %d %d %d %d %d %d",
&process->m_size, &process->m_resident, &process->m_share,
&process->m_trs, &process->m_lrs, &process->m_drs,
&process->m_dt);
fclose(status);
if(num != 7)
goto errorReadingProcess;
if (this->hideKernelThreads && process->m_size == 0)
goto errorReadingProcess;
int lasttimes = (process->utime + process->stime);
snprintf(statusfilename, MAX_NAME, "%s/%s/stat", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if (status == NULL)
goto errorReadingProcess;
int success = ProcessList_readStatFile(process, status, command);
fclose(status);
if(!success) {
goto errorReadingProcess;
}
if(!existingProcess) {
process->user = UsersTable_getRef(this->usersTable, process->st_uid);
#ifdef HAVE_OPENVZ
if (access("/proc/vz", R_OK) != 0) {
process->vpid = process->pid;
process->ctid = 0;
} else {
snprintf(statusfilename, MAX_NAME, "%s/%s/stat", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if (status == NULL)
goto errorReadingProcess;
num = ProcessList_fread(this, status,
"%*u %*s %*c %*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %*u %*u %*u %*u %*u "
"%*u %*u %u %u",
&process->vpid, &process->ctid);
fclose(status);
}
#endif
#ifdef HAVE_CGROUP
snprintf(statusfilename, MAX_NAME, "%s/%s/cgroup", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if (status) {
char buffer[256];
char *ok = fgets(buffer, 255, status);
if (ok) {
char* trimmed = String_trim(buffer);
char** fields = String_split(trimmed, ':');
free(trimmed);
process->cgroup = strndup(fields[2] + 1, 10);
String_freeArray(fields);
}
fclose(status);
} else {
process->cgroup = strdup("");
}
#endif
#ifdef HAVE_VSERVER
snprintf(statusfilename, MAX_NAME, "%s/%s/status", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if (status == NULL)
goto errorReadingProcess;
else {
char buffer[256];
process->vxid = 0;
while (fgets(buffer, 255, status)) {
if (String_startsWith(buffer, "VxID:")) {
int vxid;
int ok = ProcessList_read(this, buffer, "VxID:\t%d", &vxid);
if (ok >= 1) {
process->vxid = vxid;
}
}
#if defined HAVE_ANCIENT_VSERVER
else if (String_startsWith(buffer, "s_context:")) {
int vxid;
int ok = ProcessList_read(this, buffer, "s_context:\t%d", &vxid);
if (ok >= 1) {
process->vxid = vxid;
}
}
#endif
}
fclose(status);
}
#endif
}
if ( ((!existingProcess) && (!showUserlandThreads || pid == parentPid || !this->showThreadNames))
|| (this->showingThreadNames && !this->showThreadNames) ) {
snprintf(statusfilename, MAX_NAME, "%s/%s/cmdline", dirname, name);
status = ProcessList_fopen(this, statusfilename, "r");
if (!status) {
goto errorReadingProcess;
}
int amtRead = fread(command, 1, PROCESS_COMM_LEN - 1, status);
if (amtRead > 0) {
for (int i = 0; i < amtRead; i++)
if (command[i] == '\0' || command[i] == '\n')
command[i] = ' ';
command[amtRead] = '\0';
}
fclose(status);
command[PROCESS_COMM_LEN] = '\0';
free(process->comm);
process->comm = String_copy(command);
} else if (pid != parentPid && this->showThreadNames) {
free(process->comm);
process->comm = String_copy(command);
}
int percent_cpu = (process->utime + process->stime - lasttimes) /
period * 100.0;
process->percent_cpu = MAX(MIN(percent_cpu, cpus*100.0), 0.0);
if (isnan(process->percent_cpu)) process->percent_cpu = 0.0;
process->percent_mem = (process->m_resident * PAGE_SIZE_KB) /
(float)(this->totalMem) *
100.0;
this->totalTasks++;
if (process->state == 'R') {
this->runningTasks++;
}
if (!existingProcess) {
ProcessList_add(this, process);
}
continue;
// Exception handler.
errorReadingProcess: {
if (process->comm) {
free(process->comm);
process->comm = NULL;
}
if (existingProcess)
ProcessList_remove(this, process);
else
Process_delete((Object*)process);
}
}
}
closedir(dir);
return true;
}
void ProcessList_scan(ProcessList* this) {
unsigned long long int usertime, nicetime, systemtime, systemalltime, idlealltime, idletime, totaltime, virtalltime;
unsigned long long int swapFree = 0;
FILE* status;
status = ProcessList_fopen(this, PROCMEMINFOFILE, "r");
assert(status != NULL);
int cpus = this->cpuCount;
{
char buffer[128];
while (fgets(buffer, 128, status)) {
switch (buffer[0]) {
case 'M':
if (String_startsWith(buffer, "MemTotal:"))
ProcessList_read(this, buffer, "MemTotal: %llu kB", &this->totalMem);
else if (String_startsWith(buffer, "MemFree:"))
ProcessList_read(this, buffer, "MemFree: %llu kB", &this->freeMem);
else if (String_startsWith(buffer, "MemShared:"))
ProcessList_read(this, buffer, "MemShared: %llu kB", &this->sharedMem);
break;
case 'B':
if (String_startsWith(buffer, "Buffers:"))
ProcessList_read(this, buffer, "Buffers: %llu kB", &this->buffersMem);
break;
case 'C':
if (String_startsWith(buffer, "Cached:"))
ProcessList_read(this, buffer, "Cached: %llu kB", &this->cachedMem);
break;
case 'S':
if (String_startsWith(buffer, "SwapTotal:"))
ProcessList_read(this, buffer, "SwapTotal: %llu kB", &this->totalSwap);
if (String_startsWith(buffer, "SwapFree:"))
ProcessList_read(this, buffer, "SwapFree: %llu kB", &swapFree);
break;
}
}
}
this->usedMem = this->totalMem - this->freeMem;
this->usedSwap = this->totalSwap - swapFree;
fclose(status);
status = ProcessList_fopen(this, PROCSTATFILE, "r");
assert(status != NULL);
for (int i = 0; i <= cpus; i++) {
char buffer[256];
int cpuid;
unsigned long long int ioWait, irq, softIrq, steal, guest;
ioWait = irq = softIrq = steal = guest = 0;
// Dependending on your kernel version,
// 5, 7 or 8 of these fields will be set.
// The rest will remain at zero.
fgets(buffer, 255, status);
if (i == 0)
ProcessList_read(this, buffer, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu", &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest);
else {
ProcessList_read(this, buffer, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu", &cpuid, &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest);
assert(cpuid == i - 1);
}
// Fields existing on kernels >= 2.6
// (and RHEL's patched kernel 2.4...)
idlealltime = idletime + ioWait;
systemalltime = systemtime + irq + softIrq;
virtalltime = steal + guest;
totaltime = usertime + nicetime + systemalltime + idlealltime + virtalltime;
CPUData* cpuData = &(this->cpus[i]);
assert (usertime >= cpuData->userTime);
assert (nicetime >= cpuData->niceTime);
assert (systemtime >= cpuData->systemTime);
assert (idletime >= cpuData->idleTime);
assert (totaltime >= cpuData->totalTime);
assert (systemalltime >= cpuData->systemAllTime);
assert (idlealltime >= cpuData->idleAllTime);
assert (ioWait >= cpuData->ioWaitTime);
assert (irq >= cpuData->irqTime);
assert (softIrq >= cpuData->softIrqTime);
assert (steal >= cpuData->stealTime);
assert (guest >= cpuData->guestTime);
cpuData->userPeriod = usertime - cpuData->userTime;
cpuData->nicePeriod = nicetime - cpuData->niceTime;
cpuData->systemPeriod = systemtime - cpuData->systemTime;
cpuData->systemAllPeriod = systemalltime - cpuData->systemAllTime;
cpuData->idleAllPeriod = idlealltime - cpuData->idleAllTime;
cpuData->idlePeriod = idletime - cpuData->idleTime;
cpuData->ioWaitPeriod = ioWait - cpuData->ioWaitTime;
cpuData->irqPeriod = irq - cpuData->irqTime;
cpuData->softIrqPeriod = softIrq - cpuData->softIrqTime;
cpuData->stealPeriod = steal - cpuData->stealTime;
cpuData->guestPeriod = guest - cpuData->guestTime;
cpuData->totalPeriod = totaltime - cpuData->totalTime;
cpuData->userTime = usertime;
cpuData->niceTime = nicetime;
cpuData->systemTime = systemtime;
cpuData->systemAllTime = systemalltime;
cpuData->idleAllTime = idlealltime;
cpuData->idleTime = idletime;
cpuData->ioWaitTime = ioWait;
cpuData->irqTime = irq;
cpuData->softIrqTime = softIrq;
cpuData->stealTime = steal;
cpuData->guestTime = guest;
cpuData->totalTime = totaltime;
}
float period = (float)this->cpus[0].totalPeriod / cpus; fclose(status);
// 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;
}
this->totalTasks = 0;
this->runningTasks = 0;
ProcessList_processEntries(this, PROCDIR, NULL, 0, period);
this->showingThreadNames = this->showThreadNames;
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;
}
}
ProcessField ProcessList_keyAt(ProcessList* this, int at) {
int x = 0;
ProcessField* fields = this->fields;
ProcessField field;
for (int i = 0; (field = fields[i]); i++) {
int len = strlen(Process_fieldTitles[field]);
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;
}
}
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