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/* |
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* i-scream central monitoring system |
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* http://www.i-scream.org |
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* Copyright (C) 2000-2004 i-scream |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id: process_stats.c,v 1.27 2004/04/02 21:20:23 tdb Exp $ |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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|
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#include "statgrab.h" |
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#if defined(SOLARIS) || defined(LINUX) |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <sys/types.h> |
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#include <dirent.h> |
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#include <string.h> |
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#endif |
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|
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#ifdef SOLARIS |
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#include <procfs.h> |
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#include <limits.h> |
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#define PROC_LOCATION "/proc" |
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#define MAX_FILE_LENGTH PATH_MAX |
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#endif |
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#ifdef LINUX |
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#include <limits.h> |
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#include <unistd.h> |
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#include <sys/stat.h> |
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#include <fcntl.h> |
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#define PROC_LOCATION "/proc" |
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#define MAX_FILE_LENGTH PATH_MAX |
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#endif |
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#ifdef ALLBSD |
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#include <stdlib.h> |
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#include <sys/param.h> |
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#include <sys/sysctl.h> |
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#if defined(FREEBSD) || defined(DFBSD) |
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#include <sys/user.h> |
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#else |
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#include <sys/proc.h> |
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#endif |
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#endif |
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|
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int get_proc_snapshot(proc_state_t **ps){ |
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proc_state_t *proc_state = NULL; |
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proc_state_t *proc_state_ptr; |
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int proc_state_size = 0; |
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#ifdef ALLBSD |
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int mib[3]; |
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size_t size; |
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struct kinfo_proc *kp_stats; |
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int procs, i; |
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#endif |
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#if defined(SOLARIS) || defined(LINUX) |
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DIR *proc_dir; |
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struct dirent *dir_entry; |
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char filename[MAX_FILE_LENGTH]; |
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FILE *f; |
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#ifdef SOLARIS |
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psinfo_t process_info; |
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#endif |
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#ifdef LINUX |
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char s; |
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/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */ |
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char ps_name[4096]; |
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char *ptr; |
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static char *psargs = NULL; |
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static int psarg_size = 0; |
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unsigned long stime, utime; |
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int x; |
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int fn; |
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int toread; |
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ssize_t size; |
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int t_read; |
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#endif |
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|
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if((proc_dir=opendir(PROC_LOCATION))==NULL){ |
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return -1; |
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} |
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|
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while((dir_entry=readdir(proc_dir))!=NULL){ |
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if(atoi(dir_entry->d_name) == 0) continue; |
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|
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#ifdef SOLARIS |
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snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name); |
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#endif |
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#ifdef LINUX |
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snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name); |
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#endif |
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if((f=fopen(filename, "r"))==NULL){ |
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/* Open failed.. Process since vanished, or the path was too long. |
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* Ah well, move onwards to the next one */ |
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continue; |
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} |
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#ifdef SOLARIS |
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fread(&process_info, sizeof(psinfo_t), 1, f); |
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#endif |
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|
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proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t)); |
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proc_state_ptr = proc_state+proc_state_size; |
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#ifdef SOLARIS |
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proc_state_ptr->pid = process_info.pr_pid; |
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proc_state_ptr->parent = process_info.pr_ppid; |
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proc_state_ptr->pgid = process_info.pr_pgid; |
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proc_state_ptr->uid = process_info.pr_uid; |
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proc_state_ptr->euid = process_info.pr_euid; |
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proc_state_ptr->gid = process_info.pr_gid; |
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proc_state_ptr->egid = process_info.pr_egid; |
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proc_state_ptr->proc_size = (process_info.pr_size) * 1024; |
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proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024; |
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proc_state_ptr->time_spent = process_info.pr_time.tv_sec; |
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proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000; |
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proc_state_ptr->process_name = strdup(process_info.pr_fname); |
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proc_state_ptr->proctitle = strdup(process_info.pr_psargs); |
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|
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if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SLEEPING; |
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if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = RUNNING; |
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if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = ZOMBIE; |
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if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED; |
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if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING; |
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#endif |
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#ifdef LINUX |
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x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*lu %*lu %*lu %*lu %*lu %lu %lu %*ld %*ld %*ld %d %*ld %*ld %*lu %llu %llu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*d %*d\n", &(proc_state_ptr->pid), ps_name, &s, &(proc_state_ptr->parent), &(proc_state_ptr->pgid), &utime, &stime, &(proc_state_ptr->nice), &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident)); |
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proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize(); |
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if(s == 'S') proc_state_ptr->state = SLEEPING; |
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if(s == 'R') proc_state_ptr->state = RUNNING; |
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if(s == 'Z') proc_state_ptr->state = ZOMBIE; |
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if(s == 'T') proc_state_ptr->state = STOPPED; |
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if(s == 'D') proc_state_ptr->state = STOPPED; |
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|
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/* pa_name[0] should = '(' */ |
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ptr = strchr(&ps_name[1], ')'); |
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if(ptr !=NULL) *ptr='\0'; |
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proc_state_ptr->process_name = strdup(&ps_name[1]); |
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|
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/* Need to do cpu */ |
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|
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|
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/* proctitle */ |
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snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name); |
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|
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if((fn=open(filename, O_RDONLY)) == -1){ |
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/* Open failed.. Process since vanished, or the path was too long. |
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* Ah well, move onwards to the next one */ |
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continue; |
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} |
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#define PSARG_START_SIZE 128 |
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if(psargs == NULL){ |
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psargs = malloc(PSARG_START_SIZE); |
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psarg_size = PSARG_START_SIZE; |
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} |
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ptr = psargs; |
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t_read = 0; |
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toread = psarg_size; |
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while((size = read(fn, ptr, toread)) == toread){ |
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psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE)); |
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ptr = psargs+psarg_size; |
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t_read = psarg_size; |
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psarg_size+=PSARG_START_SIZE; |
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toread = PSARG_START_SIZE; |
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} |
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if(size != -1) t_read+=size; |
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|
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ptr = psargs; |
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for(x=0; x<t_read; x++){ |
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if (*ptr == '\0') *ptr = ' '; |
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ptr++; |
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} |
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/* for safety sake */ |
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psargs[t_read] = '\0'; |
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|
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proc_state_ptr->proctitle = strdup(psargs); |
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|
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#endif |
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|
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proc_state_size++; |
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|
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fclose(f); |
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} |
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closedir(proc_dir); |
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#endif |
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|
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#ifdef ALLBSD |
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mib[0] = CTL_KERN; |
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mib[1] = KERN_PROC; |
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mib[2] = KERN_PROC_ALL; |
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|
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if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) { |
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return NULL; |
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} |
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|
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procs = size / sizeof(struct kinfo_proc); |
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|
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kp_stats = malloc(size); |
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if (kp_stats == NULL) { |
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return NULL; |
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} |
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|
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if (sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) { |
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free(kp_stats); |
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return NULL; |
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} |
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|
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for (i = 0; i < procs; i++) { |
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proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t)); |
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proc_state_ptr = proc_state+proc_state_size; |
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|
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proc_state_ptr->process_name = strdup(kp_stats[i].ki_comm); |
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/* Seems we don't have access to that bit of memory */ |
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/*proc_state_ptr->proctitle = strdup(kp_stats[i].ki_args->ar_args);*/ |
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proc_state_ptr->proctitle = NULL; |
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|
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proc_state_ptr->pid = kp_stats[i].ki_pid; |
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proc_state_ptr->parent = kp_stats[i].ki_ppid; |
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proc_state_ptr->pgid = kp_stats[i].ki_pgid; |
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|
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proc_state_ptr->uid = kp_stats[i].ki_ruid; |
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proc_state_ptr->euid = kp_stats[i].ki_uid; |
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proc_state_ptr->gid = kp_stats[i].ki_rgid; |
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proc_state_ptr->egid = kp_stats[i].ki_svgid; |
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|
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proc_state_ptr->proc_size = kp_stats[i].ki_size; |
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/* This is in pages */ |
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proc_state_ptr->proc_resident = kp_stats[i].ki_rssize * getpagesize(); |
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/* This is in microseconds */ |
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proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000; |
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proc_state_ptr->cpu_percent = ((double) kp_stats[i].ki_pctcpu / FSCALE) * 100.0; |
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proc_state_ptr->nice = kp_stats[i].ki_nice; |
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|
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switch (kp_stats[i].ki_stat) { |
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case SIDL: |
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case SRUN: |
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#ifdef SONPROC |
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case SONPROC: /* NetBSD */ |
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#endif |
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proc_state_ptr->state = RUNNING; |
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break; |
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case SSLEEP: |
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#ifdef SWAIT |
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case SWAIT: /* FreeBSD 5 */ |
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#endif |
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#ifdef SLOCK |
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case SLOCK: /* FreeBSD 5 */ |
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#endif |
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proc_state_ptr->state = SLEEPING; |
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break; |
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case SSTOP: |
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proc_state_ptr->state = STOPPED; |
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break; |
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case SZOMB: |
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#ifdef SDEAD |
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case SDEAD: /* OpenBSD & NetBSD */ |
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#endif |
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proc_state_ptr->state = ZOMBIE; |
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break; |
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} |
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proc_state_size++; |
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} |
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|
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free(kp_stats); |
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#endif |
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|
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*ps = proc_state; |
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return proc_state_size; |
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} |
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|
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process_stat_t *get_process_stats() { |
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static process_stat_t process_stat; |
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proc_state_t *ps; |
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int ps_size, x; |
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|
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process_stat.sleeping=0; |
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process_stat.running=0; |
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process_stat.zombie=0; |
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process_stat.stopped=0; |
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process_stat.total=0; |
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|
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ps_size = get_proc_snapshot(&ps); |
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|
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for(x = 0; x < ps_size; x++) { |
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switch (ps->state) { |
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case RUNNING: |
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process_stat.running++; |
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break; |
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case SLEEPING: |
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process_stat.sleeping++; |
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break; |
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case STOPPED: |
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process_stat.stopped++; |
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break; |
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case ZOMBIE: |
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process_stat.zombie++; |
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break; |
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} |
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ps++; |
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} |
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|
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process_stat.total = ps_size; |
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|
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return &process_stat; |
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} |
