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root/i-scream/projects/libstatgrab/src/libstatgrab/process_stats.c
Revision: 1.17
Committed: Fri Jan 16 15:54:54 2004 UTC (20 years, 4 months ago) by tdb
Content type: text/plain
Branch: MAIN
Changes since 1.16: +13 -12 lines
Log Message:
Alter the licensing of libstatgrab. The library part is now under the
LGPL, whilst the tools/examples are under the GPL. Both licenses are
included in the distribution (and are both now in CVS). Also made a
minor alteration to the webpage where it said everything was licensed
under the GPL.

File Contents

# Content
1 /*
2 * i-scream central monitoring system
3 * http://www.i-scream.org
4 * Copyright (C) 2000-2004 i-scream
5 *
6 * 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 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * 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 */
21
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25
26 #include "statgrab.h"
27 #if defined(SOLARIS) || defined(LINUX)
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <sys/types.h>
31 #include <dirent.h>
32 #include <string.h>
33 #endif
34
35 #include "tools.h"
36 #ifdef SOLARIS
37 #include <procfs.h>
38 #include <limits.h>
39 #define PROC_LOCATION "/proc"
40 #define MAX_FILE_LENGTH PATH_MAX
41 #endif
42 #ifdef LINUX
43 #include <limits.h>
44 #define PROC_LOCATION "/proc"
45 #define MAX_FILE_LENGTH PATH_MAX
46 #endif
47 #ifdef ALLBSD
48 #include <kvm.h>
49 #include <sys/param.h>
50 #include <sys/sysctl.h>
51 #endif
52 #ifdef FREEBSD
53 #include <sys/user.h>
54 #endif
55
56 process_stat_t *get_process_stats(){
57
58 static process_stat_t process_stat;
59
60 #if defined(SOLARIS) || defined(LINUX)
61 DIR *proc_dir;
62 struct dirent *dir_entry;
63 char filename[MAX_FILE_LENGTH];
64 FILE *f;
65 #endif
66 #ifdef LINUX
67 char *line_ptr;
68 #endif
69 #ifdef SOLARIS
70 psinfo_t process_info;
71 #endif
72 #ifdef ALLBSD
73 struct kinfo_proc *kp_stats;
74 kvm_t *kvmd;
75 int procs;
76 #endif
77
78 process_stat.sleeping=0;
79 process_stat.running=0;
80 process_stat.zombie=0;
81 process_stat.stopped=0;
82 process_stat.total=0;
83
84 #if defined(SOLARIS) || defined(LINUX)
85 if((proc_dir=opendir(PROC_LOCATION))==NULL){
86 return NULL;
87 }
88
89 while((dir_entry=readdir(proc_dir))!=NULL){
90 if(atoi(dir_entry->d_name) == 0) continue;
91
92 #ifdef SOLARIS
93 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
94 #endif
95 #ifdef LINUX
96 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
97 #endif
98
99 if((f=fopen(filename, "r"))==NULL){
100 /* Open failed.. Process since vanished, or the path was too long.
101 * Ah well, move onwards to the next one */
102 continue;
103 }
104
105 #ifdef SOLARIS
106 fread(&process_info, sizeof(psinfo_t), 1, f);
107 if(process_info.pr_lwp.pr_state==1) process_stat.sleeping++;
108 if(process_info.pr_lwp.pr_state==2) process_stat.running++;
109 if(process_info.pr_lwp.pr_state==3) process_stat.zombie++;
110 if(process_info.pr_lwp.pr_state==4) process_stat.stopped++;
111 if(process_info.pr_lwp.pr_state==6) process_stat.running++;
112 #endif
113 #ifdef LINUX
114 if((line_ptr=f_read_line(f, "State:"))==NULL){
115 fclose(f);
116 continue;
117 }
118 if((line_ptr=strchr(line_ptr, '\t'))==NULL){
119 fclose(f);
120 continue;
121 }
122 line_ptr++;
123 if(line_ptr=='\0'){
124 fclose(f);
125 continue;
126 }
127
128 if(*line_ptr=='S') process_stat.sleeping++;
129 if(*line_ptr=='R') process_stat.running++;
130 if(*line_ptr=='Z') process_stat.zombie++;
131 if(*line_ptr=='T') process_stat.stopped++;
132 if(*line_ptr=='D') process_stat.stopped++;
133 #endif
134
135 fclose(f);
136 }
137 closedir(proc_dir);
138 #endif
139 #ifdef ALLBSD
140 if((kvmd = get_kvm()) == NULL){
141 return NULL;
142 }
143
144 kp_stats=kvm_getprocs(kvmd, KERN_PROC_ALL, 0, &procs);
145
146 while(procs--){
147 #ifdef FREEBSD5
148 if (kp_stats[procs].ki_stat == SSLEEP) process_stat.sleeping++;
149 if (kp_stats[procs].ki_stat == SWAIT) process_stat.sleeping++;
150 if (kp_stats[procs].ki_stat == SLOCK) process_stat.sleeping++;
151 if (kp_stats[procs].ki_stat == SRUN) process_stat.running++;
152 if (kp_stats[procs].ki_stat == SIDL) process_stat.running++;
153 if (kp_stats[procs].ki_stat == SZOMB) process_stat.zombie++;
154 if (kp_stats[procs].ki_stat == SSTOP) process_stat.stopped++;
155
156 #else
157 if (kp_stats[procs].kp_proc.p_stat == SSLEEP) process_stat.sleeping++;
158 if (kp_stats[procs].kp_proc.p_stat == SRUN) process_stat.running++;
159 if (kp_stats[procs].kp_proc.p_stat == SIDL) process_stat.running++;
160 if (kp_stats[procs].kp_proc.p_stat == SZOMB) process_stat.zombie++;
161 if (kp_stats[procs].kp_proc.p_stat == SSTOP) process_stat.stopped++;
162 #endif
163 }
164 #endif
165
166 #ifdef CYGWIN
167 return NULL;
168 #endif
169
170 process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;
171
172 return &process_stat;
173 }