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

Comparing projects/libstatgrab/src/libstatgrab/process_stats.c (file contents):
Revision 1.4 by pajs, Sat Mar 1 16:39:25 2003 UTC vs.
Revision 1.28 by tdb, Sat Apr 3 16:57:32 2004 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2004 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.
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 program is distributed in the hope that it will be useful,
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
14	<	* GNU General Public License for more details.
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 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.
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	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
25		#include "config.h"
26		#endif
27
28	+	#include "statgrab.h"
29	+	#if defined(SOLARIS) || defined(LINUX)
30		#include <stdio.h>
31		#include <stdlib.h>
32	<	#include <unistd.h>
33	<	#include "statgrab.h"
32	>	#include <sys/types.h>
33	>	#include <dirent.h>
34	>	#include <string.h>
35	>	#endif
36
37		#ifdef SOLARIS
38		#include <procfs.h>
39		#include <limits.h>
33	–	#include <dirent.h>
34	–	#include <string.h>
40		#define PROC_LOCATION "/proc"
41		#define MAX_FILE_LENGTH PATH_MAX
42		#endif
43	+	#ifdef LINUX
44	+	#include <limits.h>
45	+	#include <unistd.h>
46	+	#include <sys/stat.h>
47	+	#include <fcntl.h>
48	+	#define PROC_LOCATION "/proc"
49	+	#define MAX_FILE_LENGTH PATH_MAX
50	+	#endif
51	+	#ifdef ALLBSD
52	+	#include <stdlib.h>
53	+	#include <sys/param.h>
54	+	#include <sys/sysctl.h>
55	+	#if defined(FREEBSD) || defined(DFBSD)
56	+	#include <sys/user.h>
57	+	#else
58	+	#include <sys/proc.h>
59	+	#endif
60	+	#endif
61
62	<	process_stat_t *get_process_stats(){
62	>	int get_proc_snapshot(proc_state_t **ps){
63	>	proc_state_t *proc_state = NULL;
64	>	proc_state_t *proc_state_ptr;
65	>	int proc_state_size = 0;
66	>	#ifdef ALLBSD
67	>	int mib[3];
68	>	size_t size;
69	>	struct kinfo_proc *kp_stats;
70	>	int procs, i;
71	>	#endif
72	>	#if defined(SOLARIS) || defined(LINUX)
73	>	DIR *proc_dir;
74	>	struct dirent *dir_entry;
75	>	char filename[MAX_FILE_LENGTH];
76	>	FILE *f;
77	>	#ifdef SOLARIS
78	>	psinfo_t process_info;
79	>	#endif
80	>	#ifdef LINUX
81	>	char s;
82	>	/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
83	>	char ps_name[4096];
84	>	char *ptr;
85	>	static char *psargs = NULL;
86	>	static int psarg_size = 0;
87	>	unsigned long stime, utime;
88	>	int x;
89	>	int fn;
90	>	int toread;
91	>	ssize_t size;
92	>	int t_read;
93	>	#endif
94
95	<	static process_stat_t process_stat;
95	>	if((proc_dir=opendir(PROC_LOCATION))==NULL){
96	>	return -1;
97	>	}
98
99	<	psinfo_t process_info;
100	<	DIR *proc_dir;
45	<	struct dirent *dir_entry;
46	<	char filename[MAX_FILE_LENGTH];
47	<	FILE *f;
99	>	while((dir_entry=readdir(proc_dir))!=NULL){
100	>	if(atoi(dir_entry->d_name) == 0) continue;
101
102	<	process_stat.sleeping=0;
103	<	process_stat.running=0;
104	<	process_stat.zombie=0;
105	<	process_stat.stopped=0;
106	<	process_stat.running=0;
102	>	#ifdef SOLARIS
103	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
104	>	#endif
105	>	#ifdef LINUX
106	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
107	>	#endif
108	>	if((f=fopen(filename, "r"))==NULL){
109	>	/* Open failed.. Process since vanished, or the path was too long.
110	>	* Ah well, move onwards to the next one */
111	>	continue;
112	>	}
113	>	#ifdef SOLARIS
114	>	fread(&process_info, sizeof(psinfo_t), 1, f);
115	>	#endif
116
117	<	if((proc_dir=opendir(PROC_LOCATION))==NULL){
117	>	proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
118	>	proc_state_ptr = proc_state+proc_state_size;
119	>	#ifdef SOLARIS
120	>	proc_state_ptr->pid = process_info.pr_pid;
121	>	proc_state_ptr->parent = process_info.pr_ppid;
122	>	proc_state_ptr->pgid = process_info.pr_pgid;
123	>	proc_state_ptr->uid = process_info.pr_uid;
124	>	proc_state_ptr->euid = process_info.pr_euid;
125	>	proc_state_ptr->gid = process_info.pr_gid;
126	>	proc_state_ptr->egid = process_info.pr_egid;
127	>	proc_state_ptr->proc_size = (process_info.pr_size) * 1024;
128	>	proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
129	>	proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
130	>	proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
131	>	proc_state_ptr->process_name = strdup(process_info.pr_fname);
132	>	proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
133	>
134	>	if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SLEEPING;
135	>	if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = RUNNING;
136	>	if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = ZOMBIE;
137	>	if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED;
138	>	if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING;
139	>	#endif
140	>	#ifdef LINUX
141	>	x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*lu %*lu %*lu %*lu %*lu %lu %lu %*ld %*ld %*ld %d %*ld %*ld %*lu %llu %llu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*lu %*d %*d\n", &(proc_state_ptr->pid), ps_name, &s, &(proc_state_ptr->parent), &(proc_state_ptr->pgid), &utime, &stime, &(proc_state_ptr->nice), &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident));
142	>	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
143	>	if(s == 'S') proc_state_ptr->state = SLEEPING;
144	>	if(s == 'R') proc_state_ptr->state = RUNNING;
145	>	if(s == 'Z') proc_state_ptr->state = ZOMBIE;
146	>	if(s == 'T') proc_state_ptr->state = STOPPED;
147	>	if(s == 'D') proc_state_ptr->state = STOPPED;
148	>
149	>	/* pa_name[0] should = '(' */
150	>	ptr = strchr(&ps_name[1], ')');
151	>	if(ptr !=NULL) *ptr='\0';
152	>	proc_state_ptr->process_name = strdup(&ps_name[1]);
153	>
154	>	/* Need to do cpu */
155	>
156	>
157	>	/* proctitle */
158	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
159	>
160	>	if((fn=open(filename, O_RDONLY)) == -1){
161	>	/* Open failed.. Process since vanished, or the path was too long.
162	>	* Ah well, move onwards to the next one */
163	>	continue;
164	>	}
165	>	#define         PSARG_START_SIZE 128
166	>	if(psargs == NULL){
167	>	psargs = malloc(PSARG_START_SIZE);
168	>	psarg_size = PSARG_START_SIZE;
169	>	}
170	>	ptr = psargs;
171	>	t_read = 0;
172	>	toread = psarg_size;
173	>	while((size = read(fn, ptr, toread)) == toread){
174	>	psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE));
175	>	ptr = psargs+psarg_size;
176	>	t_read = psarg_size;
177	>	psarg_size+=PSARG_START_SIZE;
178	>	toread = PSARG_START_SIZE;
179	>	}
180	>	if(size != -1) t_read+=size;
181	>
182	>	ptr = psargs;
183	>	for(x=0; x<t_read; x++){
184	>	if (*ptr == '\0') *ptr = ' ';
185	>	ptr++;
186	>	}
187	>	/*  for safety sake */
188	>	psargs[t_read] = '\0';
189	>
190	>	proc_state_ptr->proctitle = strdup(psargs);
191	>
192	>	#endif
193	>
194	>	proc_state_size++;
195	>
196	>	fclose(f);
197	>	}
198	>	closedir(proc_dir);
199	>	#endif
200	>
201	>	#ifdef ALLBSD
202	>	mib[0] = CTL_KERN;
203	>	mib[1] = KERN_PROC;
204	>	mib[2] = KERN_PROC_ALL;
205	>
206	>	if (sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
207		return NULL;
208		}
209
210	<	while((dir_entry=readdir(proc_dir))!=NULL){
60	<	if(atoi(dir_entry->d_name) == 0) continue;
61	<	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
210	>	procs = size / sizeof(struct kinfo_proc);
211
212	<	if((f=fopen(filename, "r"))==NULL){
213	<	/* Open failed.. Process since vanished, or the path was too long.
214	<	* Ah well, move onwards to the next one */
215	<	continue;
212	>	kp_stats = malloc(size);
213	>	if (kp_stats == NULL) {
214	>	return NULL;
215	>	}
216	>
217	>	if (sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
218	>	free(kp_stats);
219	>	return NULL;
220	>	}
221	>
222	>	for (i = 0; i < procs; i++) {
223	>	proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
224	>	proc_state_ptr = proc_state+proc_state_size;
225	>
226	>	proc_state_ptr->process_name = strdup(kp_stats[i].ki_comm);
227	>	/* Seems we don't have access to that bit of memory */
228	>	/*proc_state_ptr->proctitle = strdup(kp_stats[i].ki_args->ar_args);*/
229	>	proc_state_ptr->proctitle = NULL;
230	>
231	>	proc_state_ptr->pid = kp_stats[i].ki_pid;
232	>	proc_state_ptr->parent = kp_stats[i].ki_ppid;
233	>	proc_state_ptr->pgid = kp_stats[i].ki_pgid;
234	>
235	>	proc_state_ptr->uid = kp_stats[i].ki_ruid;
236	>	proc_state_ptr->euid = kp_stats[i].ki_uid;
237	>	proc_state_ptr->gid = kp_stats[i].ki_rgid;
238	>	proc_state_ptr->egid = kp_stats[i].ki_svgid;
239	>
240	>	proc_state_ptr->proc_size = kp_stats[i].ki_size;
241	>	/* This is in pages */
242	>	proc_state_ptr->proc_resident = kp_stats[i].ki_rssize * getpagesize();
243	>	/* This is in microseconds */
244	>	proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
245	>	proc_state_ptr->cpu_percent = ((double) kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
246	>	proc_state_ptr->nice = kp_stats[i].ki_nice;
247	>
248	>	switch (kp_stats[i].ki_stat) {
249	>	case SIDL:
250	>	case SRUN:
251	>	#ifdef SONPROC
252	>	case SONPROC: /* NetBSD */
253	>	#endif
254	>	proc_state_ptr->state = RUNNING;
255	>	break;
256	>	case SSLEEP:
257	>	#ifdef SWAIT
258	>	case SWAIT: /* FreeBSD 5 */
259	>	#endif
260	>	#ifdef SLOCK
261	>	case SLOCK: /* FreeBSD 5 */
262	>	#endif
263	>	proc_state_ptr->state = SLEEPING;
264	>	break;
265	>	case SSTOP:
266	>	proc_state_ptr->state = STOPPED;
267	>	break;
268	>	case SZOMB:
269	>	#ifdef SDEAD
270	>	case SDEAD: /* OpenBSD & NetBSD */
271	>	#endif
272	>	proc_state_ptr->state = ZOMBIE;
273	>	break;
274		}
275	+	proc_state_size++;
276	+	}
277
278	<	fread(&process_info, sizeof(psinfo_t), 1, f);
279	<	fclose(f);
278	>	free(kp_stats);
279	>	#endif
280
281	<	if(process_info.pr_lwp.pr_state==1) process_stat.sleeping++;
282	<	if(process_info.pr_lwp.pr_state==2) process_stat.running++;
283	<	if(process_info.pr_lwp.pr_state==3) process_stat.zombie++;
284	<	if(process_info.pr_lwp.pr_state==4) process_stat.stopped++;
285	<	if(process_info.pr_lwp.pr_state==6) process_stat.running++;
281	>	*ps = proc_state;
282	>	return proc_state_size;
283	>	}
284	>
285	>	process_stat_t *get_process_stats() {
286	>	static process_stat_t process_stat;
287	>	proc_state_t *ps;
288	>	int ps_size, x;
289	>
290	>	process_stat.sleeping=0;
291	>	process_stat.running=0;
292	>	process_stat.zombie=0;
293	>	process_stat.stopped=0;
294	>	process_stat.total=0;
295	>
296	>	ps_size = get_proc_snapshot(&ps);
297	>
298	>	for(x = 0; x < ps_size; x++) {
299	>	switch (ps->state) {
300	>	case RUNNING:
301	>	process_stat.running++;
302	>	break;
303	>	case SLEEPING:
304	>	process_stat.sleeping++;
305	>	break;
306	>	case STOPPED:
307	>	process_stat.stopped++;
308	>	break;
309	>	case ZOMBIE:
310	>	process_stat.zombie++;
311	>	break;
312	>	}
313	>	ps++;
314		}
78	–
79	–	closedir(proc_dir);
315
316	+	process_stat.total = ps_size;
317
82	–	process_stat.total=process_stat.sleeping+process_stat.running+process_stat.zombie+process_stat.stopped;
318		return &process_stat;
319		}

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