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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 1.24 by pajs, Sun Mar 28 18:22:58 2004 UTC vs.
Revision 1.38 by ats, Sun Apr 4 21:40:55 2004 UTC

#	Line 42 | Line 42
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
#	Line 54 | Line 57
57		#else
58		#include <sys/proc.h>
59		#endif
60	+	#include <string.h>
61	+	#include <paths.h>
62	+	#include <fcntl.h>
63	+	#include <limits.h>
64	+	#include <kvm.h>
65		#endif
66
67		int get_proc_snapshot(proc_state_t **ps){
68		proc_state_t *proc_state = NULL;
69		proc_state_t *proc_state_ptr;
70		int proc_state_size = 0;
71	+	#ifdef ALLBSD
72	+	int mib[4];
73	+	size_t size;
74	+	struct kinfo_proc *kp_stats;
75	+	int procs, i, alloc;
76	+	char *proctitle;
77	+	#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
78	+	long buflen;
79	+	char *p;
80	+	int argc;
81	+	int j = 0;
82	+	#else
83	+	static kvm_t *kvmd;
84	+	char **args;
85	+	#endif
86	+	#endif
87		#if defined(SOLARIS) || defined(LINUX)
88		DIR *proc_dir;
89		struct dirent *dir_entry;
#	Line 68 | Line 92 | int get_proc_snapshot(proc_state_t **ps){
92		#ifdef SOLARIS
93		psinfo_t process_info;
94		#endif
95	+	#ifdef LINUX
96	+	char s;
97	+	/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
98	+	char ps_name[4096];
99	+	char *ptr;
100	+	static char *psargs = NULL;
101	+	static int psarg_size = 0;
102	+	unsigned long stime, utime;
103	+	int x;
104	+	int fn;
105	+	int toread;
106	+	ssize_t size;
107	+	int t_read;
108	+	#endif
109
110		if((proc_dir=opendir(PROC_LOCATION))==NULL){
111	<	return NULL;
111	>	return -1;
112		}
113
114		while((dir_entry=readdir(proc_dir))!=NULL){
#	Line 79 | Line 117 | int get_proc_snapshot(proc_state_t **ps){
117		#ifdef SOLARIS
118		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
119		#endif
120	+	#ifdef LINUX
121	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
122	+	#endif
123		if((f=fopen(filename, "r"))==NULL){
124		/* Open failed.. Process since vanished, or the path was too long.
125		* Ah well, move onwards to the next one */
#	Line 86 | Line 127 | int get_proc_snapshot(proc_state_t **ps){
127		}
128		#ifdef SOLARIS
129		fread(&process_info, sizeof(psinfo_t), 1, f);
130	+	#endif
131
132		proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
133		proc_state_ptr = proc_state+proc_state_size;
134	<
134	>	#ifdef SOLARIS
135		proc_state_ptr->pid = process_info.pr_pid;
136		proc_state_ptr->parent = process_info.pr_ppid;
137		proc_state_ptr->pgid = process_info.pr_pgid;
#	Line 110 | Line 152 | int get_proc_snapshot(proc_state_t **ps){
152		if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED;
153		if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING;
154		#endif
155	+	#ifdef LINUX
156	+	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));
157	+	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
158	+	if(s == 'S') proc_state_ptr->state = SLEEPING;
159	+	if(s == 'R') proc_state_ptr->state = RUNNING;
160	+	if(s == 'Z') proc_state_ptr->state = ZOMBIE;
161	+	if(s == 'T') proc_state_ptr->state = STOPPED;
162	+	if(s == 'D') proc_state_ptr->state = STOPPED;
163	+
164	+	/* pa_name[0] should = '(' */
165	+	ptr = strchr(&ps_name[1], ')');
166	+	if(ptr !=NULL) *ptr='\0';
167	+	proc_state_ptr->process_name = strdup(&ps_name[1]);
168
169	<	proc_state_size++;
169	>	/* Need to do cpu */
170	>
171	>
172	>	/* proctitle */
173	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
174	>
175	>	if((fn=open(filename, O_RDONLY)) == -1){
176	>	/* Open failed.. Process since vanished, or the path was too long.
177	>	* Ah well, move onwards to the next one */
178	>	continue;
179	>	}
180	>	#define         PSARG_START_SIZE 128
181	>	if(psargs == NULL){
182	>	psargs = malloc(PSARG_START_SIZE);
183	>	psarg_size = PSARG_START_SIZE;
184	>	}
185	>	ptr = psargs;
186	>	t_read = 0;
187	>	toread = psarg_size;
188	>	while((size = read(fn, ptr, toread)) == toread){
189	>	psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE));
190	>	ptr = psargs+psarg_size;
191	>	t_read = psarg_size;
192	>	psarg_size+=PSARG_START_SIZE;
193	>	toread = PSARG_START_SIZE;
194	>	}
195	>	if(size != -1) t_read+=size;
196	>
197	>	ptr = psargs;
198	>	for(x=0; x<t_read; x++){
199	>	if (*ptr == '\0') *ptr = ' ';
200	>	ptr++;
201	>	}
202	>	/*  for safety sake */
203	>	psargs[t_read] = '\0';
204	>
205	>	proc_state_ptr->proctitle = strdup(psargs);
206	>
207		#endif
208
209	+	proc_state_size++;
210
211		fclose(f);
212		}
213		closedir(proc_dir);
214	<	*ps = proc_state;
214	>	#endif
215
216	+	#ifdef ALLBSD
217	+	mib[0] = CTL_KERN;
218	+	mib[1] = KERN_PROC;
219	+	mib[2] = KERN_PROC_ALL;
220	+
221	+	if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
222	+	return NULL;
223	+	}
224	+
225	+	procs = size / sizeof(struct kinfo_proc);
226	+
227	+	kp_stats = malloc(size);
228	+	if(kp_stats == NULL) {
229	+	return NULL;
230	+	}
231	+
232	+	if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
233	+	free(kp_stats);
234	+	return NULL;
235	+	}
236	+
237	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
238	+	kvmd = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
239	+	#endif
240	+
241	+	for (i = 0; i < procs; i++) {
242	+	/* replace with something more sensible */
243	+	proc_state = realloc(proc_state,
244	+	(1+proc_state_size)*sizeof(proc_state_t));
245	+	if(proc_state == NULL ) {
246	+	return NULL;
247	+	}
248	+	proc_state_ptr = proc_state+proc_state_size;
249	+
250	+	#ifdef FREEBSD5
251	+	proc_state_ptr->process_name =
252	+	strdup(kp_stats[i].ki_comm);
253	+	#elif defined(DFBSD)
254	+	proc_state_ptr->process_name =
255	+	strdup(kp_stats[i].kp_thread.td_comm);
256	+	#else
257	+	proc_state_ptr->process_name =
258	+	strdup(kp_stats[i].kp_proc.p_comm);
259	+	#endif
260	+
261	+	#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
262	+	size = sizeof(buflen);
263	+
264	+	#ifdef FREEBSD5
265	+	if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
266	+	return NULL;
267	+	}
268	+	#else
269	+	mib[1] = KERN_ARGMAX;
270	+
271	+	if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
272	+	return NULL;
273	+	}
274	+	#endif
275	+
276	+	proctitle = malloc(buflen);
277	+	if(proctitle == NULL) {
278	+	return NULL;
279	+	}
280	+
281	+	size = buflen;
282	+
283	+	#ifdef FREEBSD5
284	+	mib[2] = KERN_PROC_ARGS;
285	+	mib[3] = kp_stats[i].ki_pid;
286	+	#else
287	+	mib[1] = KERN_PROC_ARGS;
288	+	mib[2] = kp_stats[i].kp_proc.p_pid;
289	+	mib[3] = KERN_PROC_ARGV;
290	+	#endif
291	+
292	+	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
293	+	free(proctitle);
294	+	proc_state_ptr->proctitle = NULL;
295	+	}
296	+	else if(size > 0) {
297	+	proc_state_ptr->proctitle = malloc(size);
298	+	if(proc_state_ptr->proctitle == NULL) {
299	+	return NULL;
300	+	}
301	+	p = proctitle;
302	+	proc_state_ptr->proctitle[0] = NULL;
303	+	do {
304	+	strncat(proc_state_ptr->proctitle, p, strlen(p));
305	+	strncat(proc_state_ptr->proctitle, " ", 1);
306	+	p += strlen(p) + 1;
307	+	} while (p < proctitle + size);
308	+	free(proctitle);
309	+	proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = NULL;
310	+	}
311	+	else {
312	+	free(proctitle);
313	+	proc_state_ptr->proctitle = NULL;
314	+	}
315	+	#else
316	+	if(kvmd != NULL) {
317	+	args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
318	+	if(args != NULL) {
319	+	alloc = 1;
320	+	proctitle = malloc(alloc);
321	+	if(proctitle == NULL) {
322	+	return NULL;
323	+	}
324	+	while(*args != NULL) {
325	+	if(strlen(proctitle) + strlen(*args) >= alloc) {
326	+	alloc = (alloc + strlen(*args)) << 1;
327	+	proctitle = realloc(proctitle, alloc);
328	+	if(proctitle == NULL) {
329	+	return NULL;
330	+	}
331	+	}
332	+	strncat(proctitle, *args, strlen(*args));
333	+	strncat(proctitle, " ", 1);
334	+	args++;
335	+	}
336	+	/* remove trailing space */
337	+	proctitle[strlen(proctitle)-1] = NULL;
338	+	proc_state_ptr->proctitle = proctitle;
339	+	}
340	+	else {
341	+	proc_state_ptr->proctitle = NULL;
342	+	}
343	+	}
344	+	else {
345	+	proc_state_ptr->proctitle = NULL;
346	+	}
347	+	#endif
348	+
349	+	#ifdef FREEBSD5
350	+	proc_state_ptr->pid = kp_stats[i].ki_pid;
351	+	proc_state_ptr->parent = kp_stats[i].ki_ppid;
352	+	proc_state_ptr->pgid = kp_stats[i].ki_pgid;
353	+	#else
354	+	proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
355	+	proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
356	+	proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
357	+	#endif
358	+
359	+	#ifdef FREEBSD5
360	+	proc_state_ptr->uid = kp_stats[i].ki_ruid;
361	+	proc_state_ptr->euid = kp_stats[i].ki_uid;
362	+	proc_state_ptr->gid = kp_stats[i].ki_rgid;
363	+	proc_state_ptr->egid = kp_stats[i].ki_svgid;
364	+	#elif defined(DFBSD)
365	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_ucred.cr_ruid;
366	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_ucred.cr_svuid;
367	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_ucred.cr_rgid;
368	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_ucred.cr_svgid;
369	+	#else
370	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
371	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
372	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
373	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
374	+	#endif
375	+
376	+	#ifdef FREEBSD5
377	+	proc_state_ptr->proc_size = kp_stats[i].ki_size;
378	+	/* This is in pages */
379	+	proc_state_ptr->proc_resident =
380	+	kp_stats[i].ki_rssize * getpagesize();
381	+	/* This is in microseconds */
382	+	proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
383	+	proc_state_ptr->cpu_percent =
384	+	((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
385	+	proc_state_ptr->nice = kp_stats[i].ki_nice;
386	+	#else
387	+	proc_state_ptr->proc_size =
388	+	kp_stats[i].kp_eproc.e_vm.vm_map.size;
389	+	/* This is in pages */
390	+	proc_state_ptr->proc_resident =
391	+	kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
392	+	#if defined(NETBSD) || defined(OPENBSD)
393	+	proc_state_ptr->time_spent =
394	+	kp_stats[i].kp_proc.p_rtime.tv_sec;
395	+	#elif defined(DFBSD)
396	+	proc_state_ptr->time_spent =
397	+	( kp_stats[i].kp_thread.td_uticks +
398	+	kp_stats[i].kp_thread.td_sticks +
399	+	kp_stats[i].kp_thread.td_iticks ) / 1000000;
400	+	#else
401	+	/* This is in microseconds */
402	+	proc_state_ptr->time_spent =
403	+	kp_stats[i].kp_proc.p_runtime / 1000000;
404	+	#endif
405	+	proc_state_ptr->cpu_percent =
406	+	((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
407	+	proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
408	+	#endif
409	+
410	+	#ifdef FREEBSD5
411	+	switch (kp_stats[i].ki_stat) {
412	+	#else
413	+	switch (kp_stats[i].kp_proc.p_stat) {
414	+	#endif
415	+	case SIDL:
416	+	case SRUN:
417	+	#ifdef SONPROC
418	+	case SONPROC: /* NetBSD */
419	+	#endif
420	+	proc_state_ptr->state = RUNNING;
421	+	break;
422	+	case SSLEEP:
423	+	#ifdef SWAIT
424	+	case SWAIT: /* FreeBSD 5 */
425	+	#endif
426	+	#ifdef SLOCK
427	+	case SLOCK: /* FreeBSD 5 */
428	+	#endif
429	+	proc_state_ptr->state = SLEEPING;
430	+	break;
431	+	case SSTOP:
432	+	proc_state_ptr->state = STOPPED;
433	+	break;
434	+	case SZOMB:
435	+	#ifdef SDEAD
436	+	case SDEAD: /* OpenBSD & NetBSD */
437	+	#endif
438	+	proc_state_ptr->state = ZOMBIE;
439	+	break;
440	+	default:
441	+	proc_state_ptr->state = UNKNOWN;
442	+	break;
443	+	}
444	+	proc_state_size++;
445	+	}
446	+
447	+	free(kp_stats);
448	+	#endif
449	+
450	+	*ps = proc_state;
451		return proc_state_size;
452		}
453
454	+	process_stat_t *get_process_stats() {
455	+	static process_stat_t process_stat;
456	+	proc_state_t *ps;
457	+	int ps_size, x;
458	+
459	+	process_stat.sleeping = 0;
460	+	process_stat.running = 0;
461	+	process_stat.zombie = 0;
462	+	process_stat.stopped = 0;
463	+	process_stat.total = 0;
464	+
465	+	ps_size = get_proc_snapshot(&ps);
466	+
467	+	if(ps_size == NULL) {
468	+	return NULL;
469	+	}
470	+
471	+	for(x = 0; x < ps_size; x++) {
472	+	switch (ps->state) {
473	+	/* currently no mapping for UNKNOWN in process_stat_t */
474	+	case RUNNING:
475	+	process_stat.running++;
476	+	break;
477	+	case SLEEPING:
478	+	process_stat.sleeping++;
479	+	break;
480	+	case STOPPED:
481	+	process_stat.stopped++;
482	+	break;
483	+	case ZOMBIE:
484	+	process_stat.zombie++;
485	+	break;
486	+	}
487	+	ps++;
488	+	}
489	+
490	+	process_stat.total = ps_size;
491	+
492	+	return &process_stat;
493	+	}

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