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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 1.23 by pajs, Sun Mar 28 18:04:14 2004 UTC vs.
Revision 1.51 by tdb, Mon Apr 5 11:21:49 2004 UTC

#	Line 26 | Line 26
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>
#	Line 42 | Line 44
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
#	Line 54 | Line 59
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	+	#include <tools.h>
69		#endif
70	+	#include <unistd.h>
71	+	#endif
72
73	+	static void proc_state_init(proc_state_t *s) {
74	+	s->process_name = NULL;
75	+	s->proctitle = NULL;
76	+	}
77	+
78	+	static void proc_state_destroy(proc_state_t *s) {
79	+	free(s->process_name);
80	+	free(s->proctitle);
81	+	}
82	+
83		int get_proc_snapshot(proc_state_t **ps){
84	<	proc_state_t *proc_state = NULL;
85	<	proc_state_t *proc_state_ptr;
84	>	VECTOR_DECLARE_STATIC(proc_state, proc_state_t, 64,
85	>	proc_state_init, proc_state_destroy);
86		int proc_state_size = 0;
87	<	#if defined(SOLARIS)
87	>	proc_state_t *proc_state_ptr;
88	>	#ifdef ALLBSD
89	>	int mib[4];
90	>	size_t size;
91	>	struct kinfo_proc *kp_stats;
92	>	int procs, i;
93	>	char *proctitle;
94	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
95	>	kvm_t *kvmd;
96	>	char **args, **argsp;
97	>	int argslen = 0;
98	>	#else
99	>	long buflen;
100	>	char *p;
101	>	#endif
102	>	#endif
103	>	#if defined(SOLARIS) || defined(LINUX)
104		DIR *proc_dir;
105		struct dirent *dir_entry;
106		char filename[MAX_FILE_LENGTH];
107		FILE *f;
108	+	#ifdef SOLARIS
109		psinfo_t process_info;
110	+	#endif
111	+	#ifdef LINUX
112	+	char s;
113	+	/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
114	+	char ps_name[4096];
115	+	char *ptr;
116	+	VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
117	+	unsigned long stime, utime;
118	+	int x;
119	+	int fn;
120	+	int len;
121	+	int rc;
122	+	#endif
123
124		if((proc_dir=opendir(PROC_LOCATION))==NULL){
125	<	return NULL;
125	>	return -1;
126		}
127
128		while((dir_entry=readdir(proc_dir))!=NULL){
129		if(atoi(dir_entry->d_name) == 0) continue;
130
131	+	#ifdef SOLARIS
132		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
133	<
133	>	#endif
134	>	#ifdef LINUX
135	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
136	>	#endif
137		if((f=fopen(filename, "r"))==NULL){
138		/* Open failed.. Process since vanished, or the path was too long.
139		* Ah well, move onwards to the next one */
140		continue;
141		}
142	+	#ifdef SOLARIS
143		fread(&process_info, sizeof(psinfo_t), 1, f);
144	+	#endif
145
146	<	proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
147	<
146	>	if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
147	>	return -1;
148	>	}
149		proc_state_ptr = proc_state+proc_state_size;
150	<
150	>
151	>	#ifdef SOLARIS
152		proc_state_ptr->pid = process_info.pr_pid;
153		proc_state_ptr->parent = process_info.pr_ppid;
154		proc_state_ptr->pgid = process_info.pr_pgid;
#	Line 101 | Line 163 | int get_proc_snapshot(proc_state_t **ps){
163		proc_state_ptr->process_name = strdup(process_info.pr_fname);
164		proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
165
166	<	proc_state_size++;
166	>	if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SLEEPING;
167	>	if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = RUNNING;
168	>	if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = ZOMBIE;
169	>	if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED;
170	>	if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING;
171		#endif
172	+	#ifdef LINUX
173	+	x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*u %*u %*u %*u %*u %lu %lu %*d %*d %*d %d %*d %*d %*u %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), &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident));
174	+	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
175	+	if(s == 'S') proc_state_ptr->state = SLEEPING;
176	+	if(s == 'R') proc_state_ptr->state = RUNNING;
177	+	if(s == 'Z') proc_state_ptr->state = ZOMBIE;
178	+	if(s == 'T') proc_state_ptr->state = STOPPED;
179	+	if(s == 'D') proc_state_ptr->state = STOPPED;
180	+
181	+	/* pa_name[0] should = '(' */
182	+	ptr = strchr(&ps_name[1], ')');
183	+	if(ptr !=NULL) *ptr='\0';
184
185	+	if (update_string(&proc_state_ptr->process_name,
186	+	&ps_name[1]) == NULL) {
187	+	return -1;
188	+	}
189
190	+	/* Need to do cpu */
191	+
192	+
193		fclose(f);
194	+
195	+	/* proctitle */
196	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
197	+
198	+	if((fn=open(filename, O_RDONLY)) == -1){
199	+	/* Open failed.. Process since vanished, or the path was too long.
200	+	* Ah well, move onwards to the next one */
201	+	continue;
202	+	}
203	+
204	+	#define READ_BLOCK_SIZE 128
205	+	len = 0;
206	+	do {
207	+	if (VECTOR_RESIZE(psargs, len + READ_BLOCK_SIZE + 1) < 0) {
208	+	return -1;
209	+	}
210	+	rc = read(fn, psargs + len, READ_BLOCK_SIZE);
211	+	if (rc > 0) {
212	+	len += rc;
213	+	}
214	+	} while (rc == READ_BLOCK_SIZE);
215	+	close(fn);
216	+
217	+	if (rc == -1) {
218	+	/* Read failed; move on. */
219	+	continue;
220	+	}
221	+
222	+	/* Turn \0s into spaces within the command line. */
223	+	ptr = psargs;
224	+	for(x = 0; x < len; x++) {
225	+	if (*ptr == '\0') *ptr = ' ';
226	+	ptr++;
227	+	}
228	+	/* for safety's sake */
229	+	psargs[len] = '\0';
230	+
231	+	if (update_string(&proc_state_ptr->proctitle, psargs) == NULL) {
232	+	return -1;
233	+	}
234	+	#endif
235	+
236	+	proc_state_size++;
237		}
238		closedir(proc_dir);
239	<	*ps = proc_state;
239	>	#endif
240
241	+	#ifdef ALLBSD
242	+	mib[0] = CTL_KERN;
243	+	mib[1] = KERN_PROC;
244	+	mib[2] = KERN_PROC_ALL;
245	+
246	+	if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
247	+	return -1;
248	+	}
249	+
250	+	procs = size / sizeof(struct kinfo_proc);
251	+
252	+	kp_stats = malloc(size);
253	+	if(kp_stats == NULL) {
254	+	return -1;
255	+	}
256	+
257	+	if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
258	+	free(kp_stats);
259	+	return -1;
260	+	}
261	+
262	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
263	+	kvmd = get_kvm2();
264	+	#endif
265	+
266	+	for (i = 0; i < procs; i++) {
267	+	const char *name;
268	+
269	+	if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
270	+	return -1;
271	+	}
272	+	proc_state_ptr = proc_state+proc_state_size;
273	+
274	+	#ifdef FREEBSD5
275	+	name = kp_stats[i].ki_comm;
276	+	#elif defined(DFBSD)
277	+	name = kp_stats[i].kp_thread.td_comm;
278	+	#else
279	+	name = kp_stats[i].kp_proc.p_comm;
280	+	#endif
281	+	if (update_string(&proc_state_ptr->process_name, name) == NULL) {
282	+	return -1;
283	+	}
284	+
285	+	#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
286	+	size = sizeof(buflen);
287	+
288	+	#ifdef FREEBSD5
289	+	if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
290	+	return -1;
291	+	}
292	+	#else
293	+	mib[1] = KERN_ARGMAX;
294	+
295	+	if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
296	+	return -1;
297	+	}
298	+	#endif
299	+
300	+	proctitle = malloc(buflen);
301	+	if(proctitle == NULL) {
302	+	return -1;
303	+	}
304	+
305	+	size = buflen;
306	+
307	+	#ifdef FREEBSD5
308	+	mib[2] = KERN_PROC_ARGS;
309	+	mib[3] = kp_stats[i].ki_pid;
310	+	#else
311	+	mib[1] = KERN_PROC_ARGS;
312	+	mib[2] = kp_stats[i].kp_proc.p_pid;
313	+	mib[3] = KERN_PROC_ARGV;
314	+	#endif
315	+
316	+	free(proc_state_ptr->proctitle);
317	+	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
318	+	free(proctitle);
319	+	proc_state_ptr->proctitle = NULL;
320	+	}
321	+	else if(size > 0) {
322	+	proc_state_ptr->proctitle = malloc(size+1);
323	+	if(proc_state_ptr->proctitle == NULL) {
324	+	return -1;
325	+	}
326	+	p = proctitle;
327	+	proc_state_ptr->proctitle[0] = '\0';
328	+	do {
329	+	strlcat(proc_state_ptr->proctitle, p, size+1);
330	+	strlcat(proc_state_ptr->proctitle, " ", size+1);
331	+	p += strlen(p) + 1;
332	+	} while (p < proctitle + size);
333	+	free(proctitle);
334	+	/* remove trailing space */
335	+	proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
336	+	}
337	+	else {
338	+	free(proctitle);
339	+	proc_state_ptr->proctitle = NULL;
340	+	}
341	+	#else
342	+	free(proc_state_ptr->proctitle);
343	+	if(kvmd != NULL) {
344	+	args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
345	+	if(args != NULL) {
346	+	argsp = args;
347	+	while(*argsp != NULL) {
348	+	argslen += strlen(*argsp) + 1;
349	+	argsp++;
350	+	}
351	+	proctitle = malloc(argslen + 1);
352	+	proctitle[0] = '\0';
353	+	if(proctitle == NULL) {
354	+	return -1;
355	+	}
356	+	while(*args != NULL) {
357	+	strlcat(proctitle, *args, argslen + 1);
358	+	strlcat(proctitle, " ", argslen + 1);
359	+	args++;
360	+	}
361	+	/* remove trailing space */
362	+	proctitle[strlen(proctitle)-1] = '\0';
363	+	proc_state_ptr->proctitle = proctitle;
364	+	}
365	+	else {
366	+	proc_state_ptr->proctitle = NULL;
367	+	}
368	+	}
369	+	else {
370	+	proc_state_ptr->proctitle = NULL;
371	+	}
372	+	#endif
373	+
374	+	#ifdef FREEBSD5
375	+	proc_state_ptr->pid = kp_stats[i].ki_pid;
376	+	proc_state_ptr->parent = kp_stats[i].ki_ppid;
377	+	proc_state_ptr->pgid = kp_stats[i].ki_pgid;
378	+	#else
379	+	proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
380	+	proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
381	+	proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
382	+	#endif
383	+
384	+	#ifdef FREEBSD5
385	+	proc_state_ptr->uid = kp_stats[i].ki_ruid;
386	+	proc_state_ptr->euid = kp_stats[i].ki_uid;
387	+	proc_state_ptr->gid = kp_stats[i].ki_rgid;
388	+	proc_state_ptr->egid = kp_stats[i].ki_svgid;
389	+	#elif defined(DFBSD)
390	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_ucred.cr_ruid;
391	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_ucred.cr_svuid;
392	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_ucred.cr_rgid;
393	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_ucred.cr_svgid;
394	+	#else
395	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
396	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
397	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
398	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
399	+	#endif
400	+
401	+	#ifdef FREEBSD5
402	+	proc_state_ptr->proc_size = kp_stats[i].ki_size;
403	+	/* This is in pages */
404	+	proc_state_ptr->proc_resident =
405	+	kp_stats[i].ki_rssize * getpagesize();
406	+	/* This is in microseconds */
407	+	proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
408	+	proc_state_ptr->cpu_percent =
409	+	((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
410	+	proc_state_ptr->nice = kp_stats[i].ki_nice;
411	+	#else
412	+	proc_state_ptr->proc_size =
413	+	kp_stats[i].kp_eproc.e_vm.vm_map.size;
414	+	/* This is in pages */
415	+	proc_state_ptr->proc_resident =
416	+	kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
417	+	#if defined(NETBSD) || defined(OPENBSD)
418	+	proc_state_ptr->time_spent =
419	+	kp_stats[i].kp_proc.p_rtime.tv_sec;
420	+	#elif defined(DFBSD)
421	+	proc_state_ptr->time_spent =
422	+	( kp_stats[i].kp_thread.td_uticks +
423	+	kp_stats[i].kp_thread.td_sticks +
424	+	kp_stats[i].kp_thread.td_iticks ) / 1000000;
425	+	#else
426	+	/* This is in microseconds */
427	+	proc_state_ptr->time_spent =
428	+	kp_stats[i].kp_proc.p_runtime / 1000000;
429	+	#endif
430	+	proc_state_ptr->cpu_percent =
431	+	((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
432	+	proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
433	+	#endif
434	+
435	+	#ifdef FREEBSD5
436	+	switch (kp_stats[i].ki_stat) {
437	+	#else
438	+	switch (kp_stats[i].kp_proc.p_stat) {
439	+	#endif
440	+	case SIDL:
441	+	case SRUN:
442	+	#ifdef SONPROC
443	+	case SONPROC: /* NetBSD */
444	+	#endif
445	+	proc_state_ptr->state = RUNNING;
446	+	break;
447	+	case SSLEEP:
448	+	#ifdef SWAIT
449	+	case SWAIT: /* FreeBSD 5 */
450	+	#endif
451	+	#ifdef SLOCK
452	+	case SLOCK: /* FreeBSD 5 */
453	+	#endif
454	+	proc_state_ptr->state = SLEEPING;
455	+	break;
456	+	case SSTOP:
457	+	proc_state_ptr->state = STOPPED;
458	+	break;
459	+	case SZOMB:
460	+	#ifdef SDEAD
461	+	case SDEAD: /* OpenBSD & NetBSD */
462	+	#endif
463	+	proc_state_ptr->state = ZOMBIE;
464	+	break;
465	+	default:
466	+	proc_state_ptr->state = UNKNOWN;
467	+	break;
468	+	}
469	+	proc_state_size++;
470	+	}
471	+
472	+	free(kp_stats);
473	+	#endif
474	+
475	+	#ifdef CYGWIN
476	+	return -1;
477	+	#endif
478	+
479	+	*ps = proc_state;
480		return proc_state_size;
481		}
482
483	+	process_stat_t *get_process_stats() {
484	+	static process_stat_t process_stat;
485	+	proc_state_t *ps;
486	+	int ps_size, x;
487	+
488	+	process_stat.sleeping = 0;
489	+	process_stat.running = 0;
490	+	process_stat.zombie = 0;
491	+	process_stat.stopped = 0;
492	+	process_stat.total = 0;
493	+
494	+	ps_size = get_proc_snapshot(&ps);
495	+
496	+	if(ps_size < 0) {
497	+	return NULL;
498	+	}
499	+
500	+	for(x = 0; x < ps_size; x++) {
501	+	switch (ps->state) {
502	+	case RUNNING:
503	+	process_stat.running++;
504	+	break;
505	+	case SLEEPING:
506	+	process_stat.sleeping++;
507	+	break;
508	+	case STOPPED:
509	+	process_stat.stopped++;
510	+	break;
511	+	case ZOMBIE:
512	+	process_stat.zombie++;
513	+	break;
514	+	default:
515	+	/* currently no mapping for UNKNOWN in process_stat_t */
516	+	break;
517	+	}
518	+	ps++;
519	+	}
520	+
521	+	process_stat.total = ps_size;
522	+
523	+	return &process_stat;
524	+	}

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