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root/i-scream/projects/libstatgrab/src/libstatgrab/process_stats.c
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.

File Contents

# Content
1 /*
2 * i-scream central monitoring system
3 * http://www.i-scream.org
4 * Copyright (C) 2000-2003 i-scream
5 *
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 #include "statgrab.h"
26 #if defined(SOLARIS) || defined(LINUX)
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <sys/types.h>
30 #include <dirent.h>
31 #include <string.h>
32 #endif
33
34 #include "tools.h"
35 #ifdef SOLARIS
36 #include <procfs.h>
37 #include <limits.h>
38 #define PROC_LOCATION "/proc"
39 #define MAX_FILE_LENGTH PATH_MAX
40 #endif
41 #ifdef LINUX
42 #include <linux/limits.h>
43 #define PROC_LOCATION "/proc"
44 #define MAX_FILE_LENGTH PATH_MAX
45 #endif
46 #ifdef ALLBSD
47 #include <kvm.h>
48 #include <sys/param.h>
49 #include <sys/sysctl.h>
50 #endif
51 #ifdef FREEBSD
52 #include <sys/user.h>
53 #endif
54
55 process_stat_t *get_process_stats(){
56
57 static process_stat_t process_stat;
58
59 #if defined(SOLARIS) || defined(LINUX)
60 DIR *proc_dir;
61 struct dirent *dir_entry;
62 char filename[MAX_FILE_LENGTH];
63 FILE *f;
64 #endif
65 #ifdef LINUX
66 char *line_ptr;
67 #endif
68 #ifdef SOLARIS
69 psinfo_t process_info;
70 #endif
71 #ifdef ALLBSD
72 struct kinfo_proc *kp_stats;
73 kvm_t *kvmd;
74 int procs;
75 #endif
76
77 process_stat.sleeping=0;
78 process_stat.running=0;
79 process_stat.zombie=0;
80 process_stat.stopped=0;
81 process_stat.total=0;
82
83 #if defined(SOLARIS) || defined(LINUX)
84 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
91 #ifdef SOLARIS
92 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
93 #endif
94 #ifdef LINUX
95 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
96 #endif
97
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 #ifdef SOLARIS
105 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 #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 }
136 closedir(proc_dir);
137 #endif
138 #ifdef ALLBSD
139 if((kvmd = get_kvm()) == NULL){
140 return NULL;
141 }
142
143 kp_stats=kvm_getprocs(kvmd, KERN_PROC_ALL, 0, &procs);
144
145 while(procs--){
146 #ifdef FREEBSD5
147 if (kp_stats[procs].ki_stat == SSLEEP) process_stat.sleeping++;
148 if (kp_stats[procs].ki_stat == SWAIT) process_stat.sleeping++;
149 if (kp_stats[procs].ki_stat == SLOCK) process_stat.sleeping++;
150 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
155 #else
156 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 #endif
162 }
163 #endif
164
165 #ifdef CYGWIN
166 return NULL;
167 #endif
168
169 process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;
170
171 return &process_stat;
172 }