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root/i-scream/projects/libstatgrab/src/libstatgrab/process_stats.c
Revision: 1.59
Committed: Tue Apr 6 21:08:03 2004 UTC (20 years, 1 month ago) by tdb
Content type: text/plain
Branch: MAIN
Changes since 1.58: +1 -2 lines
Log Message:
Fix a couple of includes.

File Contents

# Content
1 /*
2 * i-scream libstatgrab
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 * $Id: process_stats.c,v 1.58 2004/04/06 16:29:44 pajs Exp $
22 */
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include "statgrab.h"
29 #include "tools.h"
30 #include "vector.h"
31 #if defined(SOLARIS) || defined(LINUX)
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <sys/types.h>
35 #include <dirent.h>
36 #include <string.h>
37 #endif
38
39 #ifdef SOLARIS
40 #include <procfs.h>
41 #include <limits.h>
42 #define PROC_LOCATION "/proc"
43 #define MAX_FILE_LENGTH PATH_MAX
44 #endif
45 #ifdef LINUX
46 #include <limits.h>
47 #include <unistd.h>
48 #include <sys/stat.h>
49 #include <fcntl.h>
50 #define PROC_LOCATION "/proc"
51 #define MAX_FILE_LENGTH PATH_MAX
52 #endif
53 #ifdef ALLBSD
54 #include <stdlib.h>
55 #include <sys/param.h>
56 #include <sys/sysctl.h>
57 #if defined(FREEBSD) || defined(DFBSD)
58 #include <sys/user.h>
59 #else
60 #include <sys/proc.h>
61 #endif
62 #include <string.h>
63 #include <paths.h>
64 #include <fcntl.h>
65 #include <limits.h>
66 #if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
67 #include <kvm.h>
68 #endif
69 #include <unistd.h>
70 #ifdef NETBSD2
71 #include <sys/lwp.h>
72 #endif
73 #endif
74
75 static void proc_state_init(sg_process_stats *s) {
76 s->process_name = NULL;
77 s->proctitle = NULL;
78 }
79
80 static void proc_state_destroy(sg_process_stats *s) {
81 free(s->process_name);
82 free(s->proctitle);
83 }
84
85 sg_process_stats *sg_get_process_stats(int *entries){
86 VECTOR_DECLARE_STATIC(proc_state, sg_process_stats, 64,
87 proc_state_init, proc_state_destroy);
88 int proc_state_size = 0;
89 sg_process_stats *proc_state_ptr;
90 #ifdef ALLBSD
91 int mib[4];
92 size_t size;
93 struct kinfo_proc *kp_stats;
94 int procs, i;
95 char *proctitle;
96 #if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
97 kvm_t *kvmd;
98 char **args, **argsp;
99 int argslen = 0;
100 #else
101 long buflen;
102 char *p;
103 #endif
104 #ifdef NETBSD2
105 int lwps;
106 struct kinfo_lwp *kl_stats;
107 #endif
108 #endif
109 #if defined(SOLARIS) || defined(LINUX)
110 DIR *proc_dir;
111 struct dirent *dir_entry;
112 char filename[MAX_FILE_LENGTH];
113 FILE *f;
114 #ifdef SOLARIS
115 psinfo_t process_info;
116 #endif
117 #ifdef LINUX
118 char s;
119 /* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
120 char ps_name[4096];
121 char *ptr;
122 VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
123 unsigned long stime, utime, starttime;
124 int x;
125 int fn;
126 int len;
127 int rc;
128 time_t uptime;
129 #endif
130
131 #ifdef LINUX
132 if ((f=fopen("/proc/uptime", "r")) == NULL) {
133 return NULL;
134 }
135 if((fscanf(f,"%lu %*d",&uptime)) != 1){
136 return NULL;
137 }
138 fclose(f);
139 #endif
140
141 if((proc_dir=opendir(PROC_LOCATION))==NULL){
142 return NULL;
143 }
144
145 while((dir_entry=readdir(proc_dir))!=NULL){
146 if(atoi(dir_entry->d_name) == 0) continue;
147
148 #ifdef SOLARIS
149 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
150 #endif
151 #ifdef LINUX
152 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
153 #endif
154 if((f=fopen(filename, "r"))==NULL){
155 /* Open failed.. Process since vanished, or the path was too long.
156 * Ah well, move onwards to the next one */
157 continue;
158 }
159 #ifdef SOLARIS
160 fread(&process_info, sizeof(psinfo_t), 1, f);
161 #endif
162
163 if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
164 return NULL;
165 }
166 proc_state_ptr = proc_state+proc_state_size;
167
168 #ifdef SOLARIS
169 proc_state_ptr->pid = process_info.pr_pid;
170 proc_state_ptr->parent = process_info.pr_ppid;
171 proc_state_ptr->pgid = process_info.pr_pgid;
172 proc_state_ptr->uid = process_info.pr_uid;
173 proc_state_ptr->euid = process_info.pr_euid;
174 proc_state_ptr->gid = process_info.pr_gid;
175 proc_state_ptr->egid = process_info.pr_egid;
176 proc_state_ptr->proc_size = (process_info.pr_size) * 1024;
177 proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
178 proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
179 proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
180 proc_state_ptr->process_name = strdup(process_info.pr_fname);
181 proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
182
183 if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
184 if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
185 if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
186 if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
187 if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
188 #endif
189 #ifdef LINUX
190 x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*u %*u %*u %*u %*u %lu %lu %*d %*d %*d %d %*d %*d %lu %llu %llu %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*d %*d\n", &(proc_state_ptr->pid), ps_name, &s, &(proc_state_ptr->parent), &(proc_state_ptr->pgid), &utime, &stime, &(proc_state_ptr->nice), &starttime, &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident));
191 /* +3 becuase man page says "Resident Set Size: number of pages the process has in real memory, minus 3 for administrative purposes." */
192 proc_state_ptr->proc_resident = (proc_state_ptr->proc_resident + 3) * getpagesize();
193 if(s == 'S') proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
194 if(s == 'R') proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
195 if(s == 'Z') proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
196 if(s == 'T') proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
197 if(s == 'D') proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
198
199 /* pa_name[0] should = '(' */
200 ptr = strchr(&ps_name[1], ')');
201 if(ptr !=NULL) *ptr='\0';
202
203 if (sg_update_string(&proc_state_ptr->process_name,
204 &ps_name[1]) < 0) {
205 return NULL;
206 }
207
208 /* cpu */
209 proc_state_ptr->cpu_percent = (100.0 * (utime + stime)) / ((uptime * 100.0) - starttime);
210 printf("%s ut: %lu st: %lu up: %lu start: %lu\n", proc_state_ptr->process_name, utime, stime, uptime , starttime);
211
212 fclose(f);
213
214 /* proctitle */
215 snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
216
217 if((fn=open(filename, O_RDONLY)) == -1){
218 /* Open failed.. Process since vanished, or the path was too long.
219 * Ah well, move onwards to the next one */
220 continue;
221 }
222
223 #define READ_BLOCK_SIZE 128
224 len = 0;
225 do {
226 if (VECTOR_RESIZE(psargs, len + READ_BLOCK_SIZE) < 0) {
227 return NULL;
228 }
229 rc = read(fn, psargs + len, READ_BLOCK_SIZE);
230 if (rc > 0) {
231 len += rc;
232 }
233 } while (rc == READ_BLOCK_SIZE);
234 close(fn);
235
236 if (rc == -1) {
237 /* Read failed; move on. */
238 continue;
239 }
240
241 /* Turn \0s into spaces within the command line. */
242 ptr = psargs;
243 for(x = 0; x < len; x++) {
244 if (*ptr == '\0') *ptr = ' ';
245 ptr++;
246 }
247
248 if (len == 0) {
249 /* We want psargs to be NULL. */
250 if (VECTOR_RESIZE(psargs, 0) < 0) {
251 return NULL;
252 }
253 } else {
254 /* Not empty, so append a \0. */
255 if (VECTOR_RESIZE(psargs, len + 1) < 0) {
256 return NULL;
257 }
258 psargs[len] = '\0';
259 }
260
261 if (sg_update_string(&proc_state_ptr->proctitle, psargs) < 0) {
262 return NULL;
263 }
264 #endif
265
266 proc_state_size++;
267 }
268 closedir(proc_dir);
269 #endif
270
271 #ifdef ALLBSD
272 mib[0] = CTL_KERN;
273 mib[1] = KERN_PROC;
274 mib[2] = KERN_PROC_ALL;
275
276 if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
277 return NULL;
278 }
279
280 procs = size / sizeof(struct kinfo_proc);
281
282 kp_stats = malloc(size);
283 if(kp_stats == NULL) {
284 return NULL;
285 }
286 memset(kp_stats, 0, size);
287
288 if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
289 free(kp_stats);
290 return NULL;
291 }
292
293 #if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
294 kvmd = sg_get_kvm2();
295 #endif
296
297 for (i = 0; i < procs; i++) {
298 const char *name;
299
300 #ifdef FREEBSD5
301 if (kp_stats[i].ki_stat == 0) {
302 #else
303 if (kp_stats[i].kp_proc.p_stat == 0) {
304 #endif
305 /* FreeBSD 5 deliberately overallocates the array that
306 * the sysctl returns, so we'll get a few junk
307 * processes on the end that we have to ignore. (Search
308 * for "overestimate by 5 procs" in
309 * src/sys/kern/kern_proc.c for more details.) */
310 continue;
311 }
312
313 if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
314 return NULL;
315 }
316 proc_state_ptr = proc_state+proc_state_size;
317
318 #ifdef FREEBSD5
319 name = kp_stats[i].ki_comm;
320 #elif defined(DFBSD)
321 name = kp_stats[i].kp_thread.td_comm;
322 #else
323 name = kp_stats[i].kp_proc.p_comm;
324 #endif
325 if (sg_update_string(&proc_state_ptr->process_name, name) < 0) {
326 return NULL;
327 }
328
329 #if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
330 size = sizeof(buflen);
331
332 #ifdef FREEBSD5
333 if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
334 return NULL;
335 }
336 #else
337 /* FIXME - this value can be too large on some of
338 the BSD's, which causes sysctl not to return
339 anything. Maybe we need something smaller? */
340 mib[1] = KERN_ARGMAX;
341
342 if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
343 return NULL;
344 }
345 #endif
346
347 proctitle = malloc(buflen);
348 if(proctitle == NULL) {
349 return NULL;
350 }
351
352 size = buflen;
353
354 #ifdef FREEBSD5
355 mib[2] = KERN_PROC_ARGS;
356 mib[3] = kp_stats[i].ki_pid;
357 #else
358 mib[1] = KERN_PROC_ARGS;
359 mib[2] = kp_stats[i].kp_proc.p_pid;
360 mib[3] = KERN_PROC_ARGV;
361 #endif
362
363 free(proc_state_ptr->proctitle);
364 if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
365 free(proctitle);
366 proc_state_ptr->proctitle = NULL;
367 }
368 else if(size > 0) {
369 proc_state_ptr->proctitle = malloc(size+1);
370 if(proc_state_ptr->proctitle == NULL) {
371 return NULL;
372 }
373 p = proctitle;
374 proc_state_ptr->proctitle[0] = '\0';
375 do {
376 sg_strlcat(proc_state_ptr->proctitle, p, size+1);
377 sg_strlcat(proc_state_ptr->proctitle, " ", size+1);
378 p += strlen(p) + 1;
379 } while (p < proctitle + size);
380 free(proctitle);
381 /* remove trailing space */
382 proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
383 }
384 else {
385 free(proctitle);
386 proc_state_ptr->proctitle = NULL;
387 }
388 #else
389 free(proc_state_ptr->proctitle);
390 if(kvmd != NULL) {
391 args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
392 if(args != NULL) {
393 argsp = args;
394 while(*argsp != NULL) {
395 argslen += strlen(*argsp) + 1;
396 argsp++;
397 }
398 proctitle = malloc(argslen + 1);
399 proctitle[0] = '\0';
400 if(proctitle == NULL) {
401 return NULL;
402 }
403 while(*args != NULL) {
404 sg_strlcat(proctitle, *args, argslen + 1);
405 sg_strlcat(proctitle, " ", argslen + 1);
406 args++;
407 }
408 /* remove trailing space */
409 proctitle[strlen(proctitle)-1] = '\0';
410 proc_state_ptr->proctitle = proctitle;
411 }
412 else {
413 proc_state_ptr->proctitle = NULL;
414 }
415 }
416 else {
417 proc_state_ptr->proctitle = NULL;
418 }
419 #endif
420
421 #ifdef FREEBSD5
422 proc_state_ptr->pid = kp_stats[i].ki_pid;
423 proc_state_ptr->parent = kp_stats[i].ki_ppid;
424 proc_state_ptr->pgid = kp_stats[i].ki_pgid;
425 #else
426 proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
427 proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
428 proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
429 #endif
430
431 #ifdef FREEBSD5
432 proc_state_ptr->uid = kp_stats[i].ki_ruid;
433 proc_state_ptr->euid = kp_stats[i].ki_uid;
434 proc_state_ptr->gid = kp_stats[i].ki_rgid;
435 proc_state_ptr->egid = kp_stats[i].ki_svgid;
436 #elif defined(DFBSD)
437 proc_state_ptr->uid = kp_stats[i].kp_eproc.e_ucred.cr_ruid;
438 proc_state_ptr->euid = kp_stats[i].kp_eproc.e_ucred.cr_svuid;
439 proc_state_ptr->gid = kp_stats[i].kp_eproc.e_ucred.cr_rgid;
440 proc_state_ptr->egid = kp_stats[i].kp_eproc.e_ucred.cr_svgid;
441 #else
442 proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
443 proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
444 proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
445 proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
446 #endif
447
448 #ifdef FREEBSD5
449 proc_state_ptr->proc_size = kp_stats[i].ki_size;
450 /* This is in pages */
451 proc_state_ptr->proc_resident =
452 kp_stats[i].ki_rssize * getpagesize();
453 /* This is in microseconds */
454 proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
455 proc_state_ptr->cpu_percent =
456 ((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
457 proc_state_ptr->nice = kp_stats[i].ki_nice;
458 #else
459 proc_state_ptr->proc_size =
460 kp_stats[i].kp_eproc.e_vm.vm_map.size;
461 /* This is in pages */
462 proc_state_ptr->proc_resident =
463 kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
464 #if defined(NETBSD) || defined(OPENBSD)
465 proc_state_ptr->time_spent =
466 kp_stats[i].kp_proc.p_rtime.tv_sec;
467 #elif defined(DFBSD)
468 proc_state_ptr->time_spent =
469 ( kp_stats[i].kp_thread.td_uticks +
470 kp_stats[i].kp_thread.td_sticks +
471 kp_stats[i].kp_thread.td_iticks ) / 1000000;
472 #else
473 /* This is in microseconds */
474 proc_state_ptr->time_spent =
475 kp_stats[i].kp_proc.p_runtime / 1000000;
476 #endif
477 proc_state_ptr->cpu_percent =
478 ((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
479 proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
480 #endif
481
482 #ifdef NETBSD2
483 {
484 size_t size;
485 int mib[5];
486
487 mib[0] = CTL_KERN;
488 mib[1] = KERN_LWP;
489 mib[2] = kp_stats[i].kp_proc.p_pid;
490 mib[3] = sizeof(struct kinfo_lwp);
491 mib[4] = 0;
492
493 if(sysctl(mib, 5, NULL, &size, NULL, 0) < 0) {
494 return NULL;
495 }
496
497 lwps = size / sizeof(struct kinfo_lwp);
498 mib[4] = lwps;
499
500 kl_stats = malloc(size);
501 if(kl_stats == NULL) {
502 return NULL;
503 }
504
505 if(sysctl(mib, 5, kl_stats, &size, NULL, 0) < 0) {
506 return NULL;
507 }
508 }
509
510 switch(kp_stats[i].kp_proc.p_stat) {
511 case SIDL:
512 proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
513 break;
514 case SACTIVE:
515 {
516 int i;
517
518 for(i = 0; i < lwps; i++) {
519 switch(kl_stats[i].l_stat) {
520 case LSONPROC:
521 case LSRUN:
522 proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
523 goto end;
524 case LSSLEEP:
525 proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
526 goto end;
527 case LSSTOP:
528 case LSSUSPENDED:
529 proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
530 goto end;
531 }
532 proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
533 }
534 end: ;
535 }
536 break;
537 case SSTOP:
538 proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
539 break;
540 case SZOMB:
541 proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
542 break;
543 default:
544 proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
545 break;
546 }
547 #else
548 #ifdef FREEBSD5
549 switch (kp_stats[i].ki_stat) {
550 #else
551 switch (kp_stats[i].kp_proc.p_stat) {
552 #endif
553 case SIDL:
554 case SRUN:
555 #ifdef SONPROC
556 case SONPROC: /* NetBSD */
557 #endif
558 proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
559 break;
560 case SSLEEP:
561 #ifdef SWAIT
562 case SWAIT: /* FreeBSD 5 */
563 #endif
564 #ifdef SLOCK
565 case SLOCK: /* FreeBSD 5 */
566 #endif
567 proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
568 break;
569 case SSTOP:
570 proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
571 break;
572 case SZOMB:
573 #ifdef SDEAD
574 case SDEAD: /* OpenBSD & NetBSD */
575 #endif
576 proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
577 break;
578 default:
579 proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
580 break;
581 }
582 #endif
583 proc_state_size++;
584 }
585
586 free(kp_stats);
587 #endif
588
589 #ifdef CYGWIN
590 return NULL;
591 #endif
592
593 *entries = proc_state_size;
594 return proc_state;
595 }
596
597 sg_process_count *sg_get_process_count() {
598 static sg_process_count process_stat;
599 sg_process_stats *ps;
600 int ps_size, x;
601
602 process_stat.sleeping = 0;
603 process_stat.running = 0;
604 process_stat.zombie = 0;
605 process_stat.stopped = 0;
606 process_stat.total = 0;
607
608 ps = sg_get_process_stats(&ps_size);
609 if (ps == NULL) {
610 return NULL;
611 }
612
613 for(x = 0; x < ps_size; x++) {
614 switch (ps->state) {
615 case SG_PROCESS_STATE_RUNNING:
616 process_stat.running++;
617 break;
618 case SG_PROCESS_STATE_SLEEPING:
619 process_stat.sleeping++;
620 break;
621 case SG_PROCESS_STATE_STOPPED:
622 process_stat.stopped++;
623 break;
624 case SG_PROCESS_STATE_ZOMBIE:
625 process_stat.zombie++;
626 break;
627 default:
628 /* currently no mapping for SG_PROCESS_STATE_UNKNOWN in
629 * sg_process_count */
630 break;
631 }
632 ps++;
633 }
634
635 process_stat.total = ps_size;
636
637 return &process_stat;
638 }