src/libstatgrab/process_stats.c

/* 
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2003 i-scream
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#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 <linux/limits.h>
#define PROC_LOCATION "/proc"
#define MAX_FILE_LENGTH PATH_MAX
#endif
#ifdef ALLBSD
#include <kvm.h>
#include <sys/param.h>
#include <sys/sysctl.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
        struct kinfo_proc *kp_stats;    
        kvm_t *kvmd;
        int procs;
#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
        if((kvmd = get_kvm()) == NULL){
                return NULL;
        }

        kp_stats=kvm_getprocs(kvmd, KERN_PROC_ALL, 0, &procs);

        while(procs--){
#ifdef FREEBSD5
                if (kp_stats[procs].ki_stat == SSLEEP) process_stat.sleeping++;
                if (kp_stats[procs].ki_stat == SWAIT) process_stat.sleeping++;
                if (kp_stats[procs].ki_stat == SLOCK) process_stat.sleeping++;
                if (kp_stats[procs].ki_stat == SRUN) process_stat.running++;
                if (kp_stats[procs].ki_stat == SIDL) process_stat.running++;
                if (kp_stats[procs].ki_stat == SZOMB) process_stat.zombie++;
                if (kp_stats[procs].ki_stat == SSTOP) process_stat.stopped++;
                
#else
                if (kp_stats[procs].kp_proc.p_stat == SSLEEP) process_stat.sleeping++;  
                if (kp_stats[procs].kp_proc.p_stat == SRUN) process_stat.running++;
                if (kp_stats[procs].kp_proc.p_stat == SIDL) process_stat.running++;
                if (kp_stats[procs].kp_proc.p_stat == SZOMB) process_stat.zombie++;
                if (kp_stats[procs].kp_proc.p_stat == SSTOP) process_stat.stopped++;
#endif
        }
#endif

#ifdef CYGWIN
        return NULL;
#endif

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

        return &process_stat;
}
Revision:	1.15
Committed:	Wed Nov 12 01:36:19 2003 UTC (20 years, 6 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.14:	+4 -4 lines
Log Message:	Make libstatgrab functions return NULL for stats that can't be fetched on cygwin.
#	User	Rev	Content
1	pajs	1.1	/*
2			* i-scream central monitoring system
3	tdb	1.8	* http://www.i-scream.org
4			* Copyright (C) 2000-2003 i-scream
5	pajs	1.1	*
6			* This program is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU General Public License
8			* as published by the Free Software Foundation; either version 2
9			* of the License, or (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19			*/
20
21			#ifdef HAVE_CONFIG_H
22			#include "config.h"
23			#endif
24
25	pajs	1.6	#include "statgrab.h"
26			#if defined(SOLARIS) \|\| defined(LINUX)
27	pajs	1.1	#include <stdio.h>
28			#include <stdlib.h>
29	pajs	1.5	#include <sys/types.h>
30			#include <dirent.h>
31			#include <string.h>
32	pajs	1.6	#endif
33	pajs	1.1
34	ats	1.13	#include "tools.h"
35	pajs	1.1	#ifdef SOLARIS
36			#include <procfs.h>
37			#include <limits.h>
38	pajs	1.5	#define PROC_LOCATION "/proc"
39			#define MAX_FILE_LENGTH PATH_MAX
40			#endif
41			#ifdef LINUX
42			#include <linux/limits.h>
43	pajs	1.1	#define PROC_LOCATION "/proc"
44			#define MAX_FILE_LENGTH PATH_MAX
45			#endif
46	ats	1.13	#ifdef ALLBSD
47	pajs	1.6	#include <kvm.h>
48			#include <sys/param.h>
49			#include <sys/sysctl.h>
50	ats	1.13	#endif
51			#ifdef FREEBSD
52	pajs	1.6	#include <sys/user.h>
53			#endif
54	pajs	1.1
55			process_stat_t *get_process_stats(){
56
57			static process_stat_t process_stat;
58
59	pajs	1.6	#if defined(SOLARIS) \|\| defined(LINUX)
60	pajs	1.1	DIR *proc_dir;
61			struct dirent *dir_entry;
62			char filename[MAX_FILE_LENGTH];
63			FILE *f;
64	pajs	1.6	#endif
65	pajs	1.5	#ifdef LINUX
66			char *line_ptr;
67			#endif
68			#ifdef SOLARIS
69			psinfo_t process_info;
70			#endif
71	ats	1.13	#ifdef ALLBSD
72	pajs	1.6	struct kinfo_proc *kp_stats;
73	ats	1.12	kvm_t *kvmd;
74	pajs	1.6	int procs;
75			#endif
76	pajs	1.1
77			process_stat.sleeping=0;
78			process_stat.running=0;
79			process_stat.zombie=0;
80			process_stat.stopped=0;
81	pajs	1.5	process_stat.total=0;
82	pajs	1.1
83	pajs	1.7	#if defined(SOLARIS) \|\| defined(LINUX)
84	pajs	1.1	if((proc_dir=opendir(PROC_LOCATION))==NULL){
85			return NULL;
86			}
87
88			while((dir_entry=readdir(proc_dir))!=NULL){
89			if(atoi(dir_entry->d_name) == 0) continue;
90	pajs	1.5
91			#ifdef SOLARIS
92	pajs	1.1	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
93	pajs	1.5	#endif
94			#ifdef LINUX
95			snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
96			#endif
97	pajs	1.1
98			if((f=fopen(filename, "r"))==NULL){
99			/* Open failed.. Process since vanished, or the path was too long.
100			* Ah well, move onwards to the next one */
101			continue;
102			}
103
104	pajs	1.5	#ifdef SOLARIS
105	pajs	1.1	fread(&process_info, sizeof(psinfo_t), 1, f);
106			if(process_info.pr_lwp.pr_state==1) process_stat.sleeping++;
107			if(process_info.pr_lwp.pr_state==2) process_stat.running++;
108			if(process_info.pr_lwp.pr_state==3) process_stat.zombie++;
109			if(process_info.pr_lwp.pr_state==4) process_stat.stopped++;
110			if(process_info.pr_lwp.pr_state==6) process_stat.running++;
111	pajs	1.5	#endif
112			#ifdef LINUX
113			if((line_ptr=f_read_line(f, "State:"))==NULL){
114			fclose(f);
115			continue;
116			}
117			if((line_ptr=strchr(line_ptr, '\t'))==NULL){
118			fclose(f);
119			continue;
120			}
121			line_ptr++;
122			if(line_ptr=='\0'){
123			fclose(f);
124			continue;
125			}
126
127			if(*line_ptr=='S') process_stat.sleeping++;
128			if(*line_ptr=='R') process_stat.running++;
129			if(*line_ptr=='Z') process_stat.zombie++;
130			if(*line_ptr=='T') process_stat.stopped++;
131			if(*line_ptr=='D') process_stat.stopped++;
132			#endif
133
134			fclose(f);
135	pajs	1.1	}
136			closedir(proc_dir);
137	pajs	1.6	#endif
138	ats	1.13	#ifdef ALLBSD
139	ats	1.12	if((kvmd = get_kvm()) == NULL){
140	pajs	1.6	return NULL;
141			}
142
143			kp_stats=kvm_getprocs(kvmd, KERN_PROC_ALL, 0, &procs);
144	pajs	1.1
145	pajs	1.6	while(procs--){
146	pajs	1.9	#ifdef FREEBSD5
147			if (kp_stats[procs].ki_stat == SSLEEP) process_stat.sleeping++;
148	pajs	1.11	if (kp_stats[procs].ki_stat == SWAIT) process_stat.sleeping++;
149			if (kp_stats[procs].ki_stat == SLOCK) process_stat.sleeping++;
150	pajs	1.9	if (kp_stats[procs].ki_stat == SRUN) process_stat.running++;
151			if (kp_stats[procs].ki_stat == SIDL) process_stat.running++;
152			if (kp_stats[procs].ki_stat == SZOMB) process_stat.zombie++;
153			if (kp_stats[procs].ki_stat == SSTOP) process_stat.stopped++;
154	pajs	1.11
155	pajs	1.9	#else
156	pajs	1.6	if (kp_stats[procs].kp_proc.p_stat == SSLEEP) process_stat.sleeping++;
157			if (kp_stats[procs].kp_proc.p_stat == SRUN) process_stat.running++;
158			if (kp_stats[procs].kp_proc.p_stat == SIDL) process_stat.running++;
159			if (kp_stats[procs].kp_proc.p_stat == SZOMB) process_stat.zombie++;
160			if (kp_stats[procs].kp_proc.p_stat == SSTOP) process_stat.stopped++;
161	pajs	1.9	#endif
162	pajs	1.6	}
163	ats	1.15	#endif
164
165			#ifdef CYGWIN
166			return NULL;
167	pajs	1.6	#endif
168	pajs	1.4
169			process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;
170	pajs	1.10
171	pajs	1.1	return &process_stat;
172			}