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htop/Process.c

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/*
htop - Process.c
(C) 2004-2006 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#define _GNU_SOURCE
#include "ProcessList.h"
#include "Object.h"
#include "CRT.h"
#include "String.h"
#include "Process.h"
#include "debug.h"
#include <stdio.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <stdbool.h>
#include <pwd.h>
// This works only with glibc 2.1+. On earlier versions
// the behavior is similar to have a hardcoded page size.
#define PAGE_SIZE ( sysconf(_SC_PAGESIZE) / 1024 )
#define PROCESS_COMM_LEN 300
#define PROCESS_USER_LEN 10
/*{
typedef enum ProcessField_ {
PID = 1, COMM, STATE, PPID, PGRP, SESSION, TTY_NR, TPGID, FLAGS, MINFLT, CMINFLT, MAJFLT, CMAJFLT, UTIME,
STIME, CUTIME, CSTIME, PRIORITY, NICE, ITREALVALUE, STARTTIME, VSIZE, RSS, RLIM, STARTCODE, ENDCODE,
STARTSTACK, KSTKESP, KSTKEIP, SIGNAL, BLOCKED, SSIGIGNORE, SIGCATCH, WCHAN, NSWAP, CNSWAP, EXIT_SIGNAL,
PROCESSOR, M_SIZE, M_RESIDENT, M_SHARE, M_TRS, M_DRS, M_LRS, M_DT, ST_UID, PERCENT_CPU, PERCENT_MEM,
USER, TIME, LAST_PROCESSFIELD
} ProcessField;
struct ProcessList_;
typedef struct Process_ {
Object super;
struct ProcessList_ *pl;
bool updated;
int pid;
char* comm;
int indent;
char state;
bool tag;
int ppid;
int pgrp;
int session;
int tty_nr;
int tpgid;
unsigned long int flags;
unsigned long int minflt;
unsigned long int cminflt;
unsigned long int majflt;
unsigned long int cmajflt;
unsigned long int utime;
unsigned long int stime;
long int cutime;
long int cstime;
long int priority;
long int nice;
long int itrealvalue;
unsigned long int starttime;
unsigned long int vsize;
long int rss;
unsigned long int rlim;
unsigned long int startcode;
unsigned long int endcode;
unsigned long int startstack;
unsigned long int kstkesp;
unsigned long int kstkeip;
unsigned long int signal;
unsigned long int blocked;
unsigned long int sigignore;
unsigned long int sigcatch;
unsigned long int wchan;
unsigned long int nswap;
unsigned long int cnswap;
int exit_signal;
int processor;
int m_size;
int m_resident;
int m_share;
int m_trs;
int m_drs;
int m_lrs;
int m_dt;
uid_t st_uid;
float percent_cpu;
float percent_mem;
char user[PROCESS_USER_LEN + 1];
} Process;
}*/
char* PROCESS_CLASS = "Process";
char *Process_fieldNames[] = {
"", "PID", "Command", "STATE", "PPID", "PGRP", "SESSION", "TTY_NR", "TPGID", "FLAGS", "MINFLT", "CMINFLT", "MAJFLT", "CMAJFLT", "UTIME", "STIME", "CUTIME", "CSTIME", "PRIORITY", "NICE", "ITREALVALUE", "STARTTIME", "VSIZE", "RSS", "RLIM", "STARTCODE", "ENDCODE", "STARTSTACK", "KSTKESP", "KSTKEIP", "SIGNAL", "BLOCKED", "SIGIGNORE", "SIGCATCH", "WCHAN", "NSWAP", "CNSWAP", "EXIT_SIGNAL", "PROCESSOR", "M_SIZE", "M_RESIDENT", "M_SHARE", "M_TRS", "M_DRS", "M_LRS", "M_DT", "ST_UID", "PERCENT_CPU", "PERCENT_MEM", "USER", "TIME", "*** report bug! ***"
};
Process* Process_new(struct ProcessList_ *pl) {
Process* this = malloc(sizeof(Process));
((Object*)this)->class = PROCESS_CLASS;
((Object*)this)->display = Process_display;
((Object*)this)->compare = Process_compare;
((Object*)this)->delete = Process_delete;
this->pl = pl;
this->tag = false;
this->updated = false;
this->utime = 0;
this->stime = 0;
this->comm = NULL;
return this;
}
Process* Process_clone(Process* this) {
Process* clone = malloc(sizeof(Process));
memcpy(clone, this, sizeof(Process));
return clone;
}
void Process_delete(Object* cast) {
Process* this = (Process*) cast;
if (this->comm) free(this->comm);
assert (this != NULL);
free(this);
}
void Process_display(Object* cast, RichString* out) {
Process* this = (Process*) cast;
ProcessField* fields = this->pl->fields;
RichString_prune(out);
for (int i = 0; fields[i]; i++)
Process_writeField(this, out, fields[i]);
if (this->pl->shadowOtherUsers && this->st_uid != getuid())
RichString_setAttr(out, CRT_colors[PROCESS_SHADOW]);
if (this->tag == true)
RichString_setAttr(out, CRT_colors[PROCESS_TAG]);
assert(out->len > 0);
}
void Process_toggleTag(Process* this) {
this->tag = this->tag == true ? false : true;
}
void Process_setPriority(Process* this, int priority) {
int old_prio = getpriority(PRIO_PROCESS, this->pid);
int err = setpriority(PRIO_PROCESS, this->pid, priority);
if (err == 0 && old_prio != getpriority(PRIO_PROCESS, this->pid)) {
this->nice = priority;
}
}
void Process_sendSignal(Process* this, int signal) {
kill(this->pid, signal);
}
#define ONE_K 1024
#define ONE_M (ONE_K * ONE_K)
#define ONE_G (ONE_M * ONE_K)
static void Process_printLargeNumber(Process* this, RichString *str, unsigned int number) {
char buffer[11];
int len;
if(number >= (1000 * ONE_M)) {
len = snprintf(buffer, 10, "%4.2fG ", (float)number / ONE_M);
RichString_appendn(str, CRT_colors[LARGE_NUMBER], buffer, len);
} else if(number >= (100000)) {
len = snprintf(buffer, 10, "%4dM ", number / ONE_K);
int attr = this->pl->highlightMegabytes
? CRT_colors[PROCESS_MEGABYTES]
: CRT_colors[PROCESS];
RichString_appendn(str, attr, buffer, len);
} else if (this->pl->highlightMegabytes && number >= 1000) {
len = snprintf(buffer, 10, "%2d", number/1000);
RichString_appendn(str, CRT_colors[PROCESS_MEGABYTES], buffer, len);
number %= 1000;
len = snprintf(buffer, 10, "%03d ", number);
RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
} else {
len = snprintf(buffer, 10, "%5d ", number);
RichString_appendn(str, CRT_colors[PROCESS], buffer, len);
}
}
static double jiffy = 0.0;
static void Process_printTime(RichString* str, unsigned long t) {
if(jiffy == 0.0) jiffy = sysconf(_SC_CLK_TCK);
double jiffytime = 1.0 / jiffy;
double realTime = t * jiffytime;
int iRealTime = (int) realTime;
int hours = iRealTime / 3600;
int minutes = (iRealTime / 60) % 60;
int seconds = iRealTime % 60;
int hundredths = (realTime - iRealTime) * 100;
char buffer[11];
if (hours) {
snprintf(buffer, 10, "%2dh", hours);
RichString_append(str, CRT_colors[LARGE_NUMBER], buffer);
snprintf(buffer, 10, "%02d:%02d ", minutes, seconds);
} else {
snprintf(buffer, 10, "%2d:%02d.%02d ", minutes, seconds, hundredths);
}
RichString_append(str, CRT_colors[DEFAULT_COLOR], buffer);
}
static inline void Process_writeCommand(Process* this, int attr, RichString* str) {
if (this->pl->highlightBaseName) {
char* firstSpace = strchr(this->comm, ' ');
if (firstSpace) {
char* slash = firstSpace;
while (slash > this->comm && *slash != '/')
slash--;
if (slash > this->comm) {
slash++;
RichString_appendn(str, attr, this->comm, slash - this->comm);
}
RichString_appendn(str, CRT_colors[PROCESS_BASENAME], slash, firstSpace - slash);
RichString_append(str, attr, firstSpace);
} else {
RichString_append(str, CRT_colors[PROCESS_BASENAME], this->comm);
}
} else {
RichString_append(str, attr, this->comm);
}
}
void Process_writeField(Process* this, RichString* str, ProcessField field) {
char buffer[PROCESS_COMM_LEN];
int attr = CRT_colors[DEFAULT_COLOR];
int n = PROCESS_COMM_LEN;
switch (field) {
case PID: snprintf(buffer, n, "%5d ", this->pid); break;
case PPID: snprintf(buffer, n, "%5d ", this->ppid); break;
case PGRP: snprintf(buffer, n, "%5d ", this->pgrp); break;
case SESSION: snprintf(buffer, n, "%5d ", this->session); break;
case TTY_NR: snprintf(buffer, n, "%5d ", this->tty_nr); break;
case TPGID: snprintf(buffer, n, "%5d ", this->tpgid); break;
case PROCESSOR: snprintf(buffer, n, "%3d ", this->processor+1); break;
case COMM: {
if (!this->pl->treeView || this->indent == 0) {
Process_writeCommand(this, attr, str);
return;
} else {
char* buf = buffer;
int maxIndent = 0;
for (int i = 0; i < 32; i++)
if (this->indent & (1 << i))
maxIndent = i+1;
for (int i = 0; i < maxIndent - 1; i++) {
if (this->indent & (1 << i))
snprintf(buf, n, " | ");
else
snprintf(buf, n, " ");
buf += 4;
n -= 4;
}
if (this->pl->direction == 1)
snprintf(buf, n, " `- ");
else
snprintf(buf, n, " ,- ");
RichString_append(str, CRT_colors[PROCESS_TREE], buffer);
Process_writeCommand(this, attr, str);
return;
}
}
case STATE: {
snprintf(buffer, n, "%c ", this->state);
attr = this->state == 'R'
? CRT_colors[PROCESS_R_STATE]
: attr;
break;
}
case PRIORITY: {
if(this->priority == -100)
snprintf(buffer, n, " RT ");
else
snprintf(buffer, n, "%3ld ", this->priority);
break;
}
case NICE: {
snprintf(buffer, n, "%3ld ", this->nice);
attr = this->nice < 0 ? CRT_colors[PROCESS_HIGH_PRIORITY]
: this->nice > 0 ? CRT_colors[PROCESS_LOW_PRIORITY]
: attr;
break;
}
case M_SIZE: Process_printLargeNumber(this, str, this->m_size * PAGE_SIZE); return;
case M_RESIDENT: Process_printLargeNumber(this, str, this->m_resident * PAGE_SIZE); return;
case M_SHARE: Process_printLargeNumber(this, str, this->m_share * PAGE_SIZE); return;
case ST_UID: snprintf(buffer, n, "%4d ", this->st_uid); break;
case USER: {
if (getuid() != this->st_uid)
attr = CRT_colors[PROCESS_SHADOW];
snprintf(buffer, n, "%-8s ", this->user);
if (buffer[8] != '\0') {
buffer[8] = ' ';
buffer[9] = '\0';
}
break;
}
case UTIME: Process_printTime(str, this->utime); return;
case STIME: Process_printTime(str, this->stime); return;
case CUTIME: Process_printTime(str, this->cutime); return;
case CSTIME: Process_printTime(str, this->cstime); return;
case TIME: Process_printTime(str, this->utime + this->stime); return;
case PERCENT_CPU: {
if (this->percent_cpu > 99.9) {
snprintf(buffer, n, "100. ");
} else {
snprintf(buffer, n, "%4.1f ", this->percent_cpu);
}
break;
}
case PERCENT_MEM: {
if (this->percent_mem > 99.9) {
snprintf(buffer, n, "100. ");
} else {
snprintf(buffer, n, "%4.1f ", this->percent_mem);
}
break;
}
default:
snprintf(buffer, n, "- ");
}
RichString_append(str, attr, buffer);
return;
}
int Process_compare(const Object* v1, const Object* v2) {
Process* p1 = (Process*)v1;
Process* p2 = (Process*)v2;
int direction = p1->pl->direction;
switch (p1->pl->sortKey) {
case PID:
return (p2->pid - p1->pid) * direction;
case PPID:
return (p2->ppid - p1->ppid) * direction;
case USER:
return strcmp(p2->user, p1->user) * direction;
case PRIORITY:
return (p2->priority - p1->priority) * direction;
case STATE:
return (p2->state - p1->state) * direction;
case NICE:
return (p2->nice - p1->nice) * direction;
case M_SIZE:
return (p1->m_size - p2->m_size) * direction;
case M_RESIDENT:
return (p1->m_resident - p2->m_resident) * direction;
case M_SHARE:
return (p1->m_share - p2->m_share) * direction;
case PERCENT_CPU:
return (p1->percent_cpu < p2->percent_cpu ? -1 : 1) * direction;
case PERCENT_MEM:
return (p1->percent_mem < p2->percent_mem ? -1 : 1) * direction;
case UTIME:
return (p1->utime - p2->utime) * direction;
case STIME:
return (p1->stime - p2->stime) * direction;
case TIME:
return ((p1->utime+p1->stime) - (p2->utime+p2->stime)) * direction;
case COMM:
return strcmp(p2->comm, p1->comm) * direction;
default:
return (p2->pid - p1->pid) * direction;
}
}
char* Process_printField(ProcessField field) {
switch (field) {
case PID: return " PID ";
case PPID: return " PPID ";
case PGRP: return " PGRP ";
case SESSION: return " SESN ";
case TTY_NR: return " TTY ";
case TPGID: return " TGID ";
case COMM: return "Command ";
case STATE: return "S ";
case PRIORITY: return "PRI ";
case NICE: return " NI ";
case M_SIZE: return " VIRT ";
case M_RESIDENT: return " RES ";
case M_SHARE: return " SHR ";
case ST_UID: return " UID ";
case USER: return "USER ";
case UTIME: return " UTIME+ ";
case STIME: return " STIME+ ";
case TIME: return " TIME+ ";
case PERCENT_CPU: return "CPU% ";
case PERCENT_MEM: return "MEM% ";
case PROCESSOR: return "CPU ";
default: return "- ";
}
}
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