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 1.19 2004/02/14 02:56:11 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

#include "tools.h"
#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>
#include <sys/proc.h>
#endif
#ifdef FREEBSD
#include <sys/user.h>
#endif

process_stat_t *get_process_stats(){

        static process_stat_t process_stat;

#if defined(SOLARIS) || defined(LINUX)
        DIR *proc_dir; 
        struct dirent *dir_entry;
        char filename[MAX_FILE_LENGTH];
        FILE *f;
#endif
#ifdef LINUX
        char *line_ptr;
#endif
#ifdef SOLARIS
        psinfo_t process_info;
#endif
#ifdef ALLBSD
        int mib[3];
        size_t size;
        struct kinfo_proc *kp_stats;    
        int procs, i;
#endif

        process_stat.sleeping=0;
        process_stat.running=0;
        process_stat.zombie=0;
        process_stat.stopped=0;
        process_stat.total=0;

#if defined(SOLARIS) || defined(LINUX)
        if((proc_dir=opendir(PROC_LOCATION))==NULL){
                return NULL;
        }

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

#ifdef SOLARIS
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
#endif
#ifdef LINUX
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
#endif

                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;
                }

#ifdef SOLARIS
                fread(&process_info, sizeof(psinfo_t), 1, f);
                if(process_info.pr_lwp.pr_state==1) process_stat.sleeping++;
                if(process_info.pr_lwp.pr_state==2) process_stat.running++;
                if(process_info.pr_lwp.pr_state==3) process_stat.zombie++;
                if(process_info.pr_lwp.pr_state==4) process_stat.stopped++;
                if(process_info.pr_lwp.pr_state==6) process_stat.running++;
#endif
#ifdef LINUX
                if((line_ptr=f_read_line(f, "State:"))==NULL){
                        fclose(f);
                        continue;
                }
                if((line_ptr=strchr(line_ptr, '\t'))==NULL){
                        fclose(f);
                        continue;
                }
                line_ptr++;
                if(line_ptr=='\0'){
                        fclose(f);
                        continue;
                }

                if(*line_ptr=='S') process_stat.sleeping++;
                if(*line_ptr=='R') process_stat.running++;
                if(*line_ptr=='Z') process_stat.zombie++;
                if(*line_ptr=='T') process_stat.stopped++;
                if(*line_ptr=='D') process_stat.stopped++;
#endif  

                fclose(f);
        }
        closedir(proc_dir);
#endif
#ifdef ALLBSD
        mib[0] = CTL_KERN;
        mib[1] = KERN_PROC;
        mib[2] = KERN_PROC_ALL;

        if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
                return NULL;
        }
        
        procs = size / sizeof(struct kinfo_proc);

        kp_stats = malloc(size);
        if (kp_stats == NULL) {
                return NULL;
        }
        
        if (sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
                return NULL;
        }

        for (i = 0; i < procs; i++) {
#ifdef FREEBSD5
                switch (kp_stats[i].ki_stat) {
#else
                switch (kp_stats[i].kp_proc.p_stat) {
#endif
                case SIDL:
                case SRUN:
#ifdef SONPROC
                case SONPROC: /* NetBSD */
#endif
                        process_stat.running++;
                        break;
                case SSLEEP:
#ifdef SWAIT
                case SWAIT: /* FreeBSD 5 */
#endif
#ifdef SLOCK
                case SLOCK: /* FreeBSD 5 */
#endif
                        process_stat.sleeping++;
                        break;
                case SSTOP:
                        process_stat.stopped++;
                        break;
                case SZOMB:
#ifdef SDEAD
                case SDEAD: /* OpenBSD & NetBSD */
#endif
                        process_stat.zombie++;
                        break;
                }
        }
#endif

free(kp_stats);

#ifdef CYGWIN
        return NULL;
#endif

        process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;

        return &process_stat;
}
Revision:	1.20
Committed:	Sat Feb 14 16:12:46 2004 UTC (20 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+19 -8 lines
Log Message:	Look at all the process states on all the BSD's. Tidly done using ifdef's.
#	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	tdb	1.20	* $Id: process_stats.c,v 1.19 2004/02/14 02:56:11 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	ats	1.13	#include "tools.h"
38	pajs	1.1	#ifdef SOLARIS
39			#include <procfs.h>
40			#include <limits.h>
41	pajs	1.5	#define PROC_LOCATION "/proc"
42			#define MAX_FILE_LENGTH PATH_MAX
43			#endif
44			#ifdef LINUX
45	ats	1.16	#include <limits.h>
46	pajs	1.1	#define PROC_LOCATION "/proc"
47			#define MAX_FILE_LENGTH PATH_MAX
48			#endif
49	ats	1.13	#ifdef ALLBSD
50	tdb	1.19	#include <stdlib.h>
51	pajs	1.6	#include <sys/param.h>
52			#include <sys/sysctl.h>
53	tdb	1.19	#include <sys/proc.h>
54	ats	1.13	#endif
55			#ifdef FREEBSD
56	pajs	1.6	#include <sys/user.h>
57			#endif
58	pajs	1.1
59			process_stat_t *get_process_stats(){
60
61			static process_stat_t process_stat;
62
63	pajs	1.6	#if defined(SOLARIS) \|\| defined(LINUX)
64	pajs	1.1	DIR *proc_dir;
65			struct dirent *dir_entry;
66			char filename[MAX_FILE_LENGTH];
67			FILE *f;
68	pajs	1.6	#endif
69	pajs	1.5	#ifdef LINUX
70			char *line_ptr;
71			#endif
72			#ifdef SOLARIS
73			psinfo_t process_info;
74			#endif
75	ats	1.13	#ifdef ALLBSD
76	tdb	1.19	int mib[3];
77			size_t size;
78	pajs	1.6	struct kinfo_proc *kp_stats;
79	tdb	1.19	int procs, i;
80	pajs	1.6	#endif
81	pajs	1.1
82			process_stat.sleeping=0;
83			process_stat.running=0;
84			process_stat.zombie=0;
85			process_stat.stopped=0;
86	pajs	1.5	process_stat.total=0;
87	pajs	1.1
88	pajs	1.7	#if defined(SOLARIS) \|\| defined(LINUX)
89	pajs	1.1	if((proc_dir=opendir(PROC_LOCATION))==NULL){
90			return NULL;
91			}
92
93			while((dir_entry=readdir(proc_dir))!=NULL){
94			if(atoi(dir_entry->d_name) == 0) continue;
95	pajs	1.5
96			#ifdef SOLARIS
97	pajs	1.1	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
98	pajs	1.5	#endif
99			#ifdef LINUX
100			snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
101			#endif
102	pajs	1.1
103			if((f=fopen(filename, "r"))==NULL){
104			/* Open failed.. Process since vanished, or the path was too long.
105			* Ah well, move onwards to the next one */
106			continue;
107			}
108
109	pajs	1.5	#ifdef SOLARIS
110	pajs	1.1	fread(&process_info, sizeof(psinfo_t), 1, f);
111			if(process_info.pr_lwp.pr_state==1) process_stat.sleeping++;
112			if(process_info.pr_lwp.pr_state==2) process_stat.running++;
113			if(process_info.pr_lwp.pr_state==3) process_stat.zombie++;
114			if(process_info.pr_lwp.pr_state==4) process_stat.stopped++;
115			if(process_info.pr_lwp.pr_state==6) process_stat.running++;
116	pajs	1.5	#endif
117			#ifdef LINUX
118			if((line_ptr=f_read_line(f, "State:"))==NULL){
119			fclose(f);
120			continue;
121			}
122			if((line_ptr=strchr(line_ptr, '\t'))==NULL){
123			fclose(f);
124			continue;
125			}
126			line_ptr++;
127			if(line_ptr=='\0'){
128			fclose(f);
129			continue;
130			}
131
132			if(*line_ptr=='S') process_stat.sleeping++;
133			if(*line_ptr=='R') process_stat.running++;
134			if(*line_ptr=='Z') process_stat.zombie++;
135			if(*line_ptr=='T') process_stat.stopped++;
136			if(*line_ptr=='D') process_stat.stopped++;
137			#endif
138
139			fclose(f);
140	pajs	1.1	}
141			closedir(proc_dir);
142	pajs	1.6	#endif
143	ats	1.13	#ifdef ALLBSD
144	tdb	1.19	mib[0] = CTL_KERN;
145			mib[1] = KERN_PROC;
146			mib[2] = KERN_PROC_ALL;
147
148			if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
149	pajs	1.6	return NULL;
150			}
151	tdb	1.19
152			procs = size / sizeof(struct kinfo_proc);
153	pajs	1.6
154	tdb	1.19	kp_stats = malloc(size);
155			if (kp_stats == NULL) {
156			return NULL;
157			}
158
159			if (sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
160			return NULL;
161			}
162	pajs	1.1
163	tdb	1.19	for (i = 0; i < procs; i++) {
164	pajs	1.9	#ifdef FREEBSD5
165	tdb	1.19	switch (kp_stats[i].ki_stat) {
166	pajs	1.9	#else
167	tdb	1.19	switch (kp_stats[i].kp_proc.p_stat) {
168	pajs	1.9	#endif
169	tdb	1.20	case SIDL:
170			case SRUN:
171			#ifdef SONPROC
172			case SONPROC: /* NetBSD */
173			#endif
174			process_stat.running++;
175			break;
176	tdb	1.19	case SSLEEP:
177	tdb	1.20	#ifdef SWAIT
178			case SWAIT: /* FreeBSD 5 */
179			#endif
180			#ifdef SLOCK
181			case SLOCK: /* FreeBSD 5 */
182			#endif
183	tdb	1.19	process_stat.sleeping++;
184			break;
185	tdb	1.20	case SSTOP:
186			process_stat.stopped++;
187	tdb	1.19	break;
188			case SZOMB:
189	tdb	1.20	#ifdef SDEAD
190			case SDEAD: /* OpenBSD & NetBSD */
191			#endif
192	tdb	1.19	process_stat.zombie++;
193			break;
194			}
195	pajs	1.6	}
196	ats	1.15	#endif
197	tdb	1.19
198			free(kp_stats);
199	ats	1.15
200			#ifdef CYGWIN
201			return NULL;
202	pajs	1.6	#endif
203	pajs	1.4
204			process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;
205	pajs	1.10
206	pajs	1.1	return &process_stat;
207			}