src/libstatgrab/process_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: process_stats.c,v 1.22 2004/02/16 14:55:32 tdb Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "statgrab.h"
#if defined(SOLARIS) || defined(LINUX)
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#endif

#ifdef SOLARIS
#include <procfs.h>
#include <limits.h>
#define PROC_LOCATION "/proc"
#define MAX_FILE_LENGTH PATH_MAX
#endif
#ifdef LINUX
#include <limits.h>
#define PROC_LOCATION "/proc"
#define MAX_FILE_LENGTH PATH_MAX
#endif
#ifdef ALLBSD
#include <stdlib.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#if defined(FREEBSD) || defined(DFBSD)
#include <sys/user.h>
#else
#include <sys/proc.h>
#endif
#endif

int get_proc_snapshot(proc_state_t **ps){
        proc_state_t *proc_state = NULL;
        proc_state_t *proc_state_ptr;
        int proc_state_size = 0;
#if defined(SOLARIS)    
        DIR *proc_dir;
        struct dirent *dir_entry;
        char filename[MAX_FILE_LENGTH];
        FILE *f;
        psinfo_t process_info;

        if((proc_dir=opendir(PROC_LOCATION))==NULL){
                return NULL;
        }

        while((dir_entry=readdir(proc_dir))!=NULL){
                if(atoi(dir_entry->d_name) == 0) continue;

                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);

                if((f=fopen(filename, "r"))==NULL){
                        /* Open failed.. Process since vanished, or the path was too long.
                         * Ah well, move onwards to the next one */
                        continue;
                }
                fread(&process_info, sizeof(psinfo_t), 1, f);

                proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));

                proc_state_ptr = proc_state+proc_state_size;
                
                proc_state_ptr->pid = process_info.pr_pid;
                proc_state_ptr->parent = process_info.pr_ppid;
                proc_state_ptr->pgid = process_info.pr_pgid;
                proc_state_ptr->uid = process_info.pr_uid;
                proc_state_ptr->euid = process_info.pr_euid;
                proc_state_ptr->gid = process_info.pr_gid;
                proc_state_ptr->egid = process_info.pr_egid;
                proc_state_ptr->proc_size = (process_info.pr_size) * 1024;
                proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
                proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
                proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
                proc_state_ptr->process_name = strdup(process_info.pr_fname);
                proc_state_ptr->proctitle = strdup(process_info.pr_psargs);

                proc_state_size++;
#endif


                fclose(f);
        }
        closedir(proc_dir);
        *ps = proc_state;

        return proc_state_size;
}

Revision:	1.23
Committed:	Sun Mar 28 18:04:14 2004 UTC (20 years, 1 month ago) by pajs
Content type:	text/plain
Branch:	MAIN
Changes since 1.22:	+49 -143 lines
Log Message:	The start of the rework for process_stats to give more information, and to become a standard proc interface.
#	User	Rev	Content
1	tdb	1.17	/*
2	pajs	1.1	* i-scream central monitoring system
3	tdb	1.8	* http://www.i-scream.org
4	tdb	1.17	* Copyright (C) 2000-2004 i-scream
5	pajs	1.1	*
6	tdb	1.17	* This library is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public
8			* License as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10	pajs	1.1	*
11	tdb	1.17	* This library is distributed in the hope that it will be useful,
12	pajs	1.1	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	tdb	1.17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15	pajs	1.1	*
16	tdb	1.17	* You should have received a copy of the GNU Lesser General Public
17			* License along with this library; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19			* 02111-1307 USA
20	tdb	1.18	*
21	pajs	1.23	* $Id: process_stats.c,v 1.22 2004/02/16 14:55:32 tdb Exp $
22	pajs	1.1	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28	pajs	1.6	#include "statgrab.h"
29			#if defined(SOLARIS) \|\| defined(LINUX)
30	pajs	1.1	#include <stdio.h>
31			#include <stdlib.h>
32	pajs	1.5	#include <sys/types.h>
33			#include <dirent.h>
34			#include <string.h>
35	pajs	1.6	#endif
36	pajs	1.1
37			#ifdef SOLARIS
38			#include <procfs.h>
39			#include <limits.h>
40	pajs	1.5	#define PROC_LOCATION "/proc"
41			#define MAX_FILE_LENGTH PATH_MAX
42			#endif
43			#ifdef LINUX
44	ats	1.16	#include <limits.h>
45	pajs	1.1	#define PROC_LOCATION "/proc"
46			#define MAX_FILE_LENGTH PATH_MAX
47			#endif
48	ats	1.13	#ifdef ALLBSD
49	tdb	1.19	#include <stdlib.h>
50	pajs	1.6	#include <sys/param.h>
51			#include <sys/sysctl.h>
52	tdb	1.22	#if defined(FREEBSD) \|\| defined(DFBSD)
53			#include <sys/user.h>
54			#else
55	tdb	1.19	#include <sys/proc.h>
56	ats	1.13	#endif
57	pajs	1.6	#endif
58	pajs	1.1
59	pajs	1.23	int get_proc_snapshot(proc_state_t **ps){
60			proc_state_t *proc_state = NULL;
61			proc_state_t *proc_state_ptr;
62			int proc_state_size = 0;
63			#if defined(SOLARIS)
64			DIR *proc_dir;
65			struct dirent *dir_entry;
66			char filename[MAX_FILE_LENGTH];
67			FILE *f;
68	pajs	1.5	psinfo_t process_info;
69	pajs	1.1
70	pajs	1.23	if((proc_dir=opendir(PROC_LOCATION))==NULL){
71			return NULL;
72			}
73
74			while((dir_entry=readdir(proc_dir))!=NULL){
75			if(atoi(dir_entry->d_name) == 0) continue;
76
77			snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
78
79			if((f=fopen(filename, "r"))==NULL){
80			/* Open failed.. Process since vanished, or the path was too long.
81			* Ah well, move onwards to the next one */
82			continue;
83			}
84			fread(&process_info, sizeof(psinfo_t), 1, f);
85	pajs	1.1
86	pajs	1.23	proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
87	pajs	1.5
88	pajs	1.23	proc_state_ptr = proc_state+proc_state_size;
89
90			proc_state_ptr->pid = process_info.pr_pid;
91			proc_state_ptr->parent = process_info.pr_ppid;
92			proc_state_ptr->pgid = process_info.pr_pgid;
93			proc_state_ptr->uid = process_info.pr_uid;
94			proc_state_ptr->euid = process_info.pr_euid;
95			proc_state_ptr->gid = process_info.pr_gid;
96			proc_state_ptr->egid = process_info.pr_egid;
97			proc_state_ptr->proc_size = (process_info.pr_size) * 1024;
98			proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
99			proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
100			proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
101			proc_state_ptr->process_name = strdup(process_info.pr_fname);
102			proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
103
104			proc_state_size++;
105	pajs	1.5	#endif
106	pajs	1.1
107
108	pajs	1.23	fclose(f);
109			}
110			closedir(proc_dir);
111			*ps = proc_state;
112	ats	1.21
113	pajs	1.23	return proc_state_size;
114			}
115	ats	1.15