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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 1.47 by tdb, Mon Apr 5 00:21:29 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	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
65	+	#include <kvm.h>
66	+	#include <tools.h>
67		#endif
68	+	#include <unistd.h>
69	+	#endif
70
71		int get_proc_snapshot(proc_state_t **ps){
72		proc_state_t *proc_state = NULL;
73		proc_state_t *proc_state_ptr;
74		int proc_state_size = 0;
75	+	#ifdef ALLBSD
76	+	int mib[4];
77	+	size_t size;
78	+	struct kinfo_proc *kp_stats;
79	+	int procs, i;
80	+	char *proctitle;
81	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
82	+	kvm_t *kvmd;
83	+	char **args;
84	+	int alloc;
85	+	char *proctitletmp;
86	+	#else
87	+	long buflen;
88	+	char *p;
89	+	#endif
90	+	#endif
91		#if defined(SOLARIS) || defined(LINUX)
92		DIR *proc_dir;
93		struct dirent *dir_entry;
#	Line 68 | Line 96 | int get_proc_snapshot(proc_state_t **ps){
96		#ifdef SOLARIS
97		psinfo_t process_info;
98		#endif
99	+	#ifdef LINUX
100	+	char s;
101	+	/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
102	+	char ps_name[4096];
103	+	char *ptr;
104	+	static char *psargs = NULL;
105	+	static int psarg_size = 0;
106	+	unsigned long stime, utime;
107	+	int x;
108	+	int fn;
109	+	int toread;
110	+	ssize_t size;
111	+	int t_read;
112	+	#endif
113
114		if((proc_dir=opendir(PROC_LOCATION))==NULL){
115	<	return NULL;
115	>	return -1;
116		}
117
118		while((dir_entry=readdir(proc_dir))!=NULL){
#	Line 79 | Line 121 | int get_proc_snapshot(proc_state_t **ps){
121		#ifdef SOLARIS
122		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
123		#endif
124	+	#ifdef LINUX
125	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
126	+	#endif
127		if((f=fopen(filename, "r"))==NULL){
128		/* Open failed.. Process since vanished, or the path was too long.
129		* Ah well, move onwards to the next one */
#	Line 86 | Line 131 | int get_proc_snapshot(proc_state_t **ps){
131		}
132		#ifdef SOLARIS
133		fread(&process_info, sizeof(psinfo_t), 1, f);
134	+	#endif
135
136		proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
137		proc_state_ptr = proc_state+proc_state_size;
138	<
138	>	#ifdef SOLARIS
139		proc_state_ptr->pid = process_info.pr_pid;
140		proc_state_ptr->parent = process_info.pr_ppid;
141		proc_state_ptr->pgid = process_info.pr_pgid;
#	Line 110 | Line 156 | int get_proc_snapshot(proc_state_t **ps){
156		if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = STOPPED;
157		if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = RUNNING;
158		#endif
159	+	#ifdef LINUX
160	+	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));
161	+	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
162	+	if(s == 'S') proc_state_ptr->state = SLEEPING;
163	+	if(s == 'R') proc_state_ptr->state = RUNNING;
164	+	if(s == 'Z') proc_state_ptr->state = ZOMBIE;
165	+	if(s == 'T') proc_state_ptr->state = STOPPED;
166	+	if(s == 'D') proc_state_ptr->state = STOPPED;
167	+
168	+	/* pa_name[0] should = '(' */
169	+	ptr = strchr(&ps_name[1], ')');
170	+	if(ptr !=NULL) *ptr='\0';
171	+	proc_state_ptr->process_name = strdup(&ps_name[1]);
172
173	<	proc_state_size++;
173	>	/* Need to do cpu */
174	>
175	>
176	>	/* proctitle */
177	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
178	>
179	>	if((fn=open(filename, O_RDONLY)) == -1){
180	>	/* Open failed.. Process since vanished, or the path was too long.
181	>	* Ah well, move onwards to the next one */
182	>	continue;
183	>	}
184	>	#define         PSARG_START_SIZE 128
185	>	if(psargs == NULL){
186	>	psargs = malloc(PSARG_START_SIZE);
187	>	psarg_size = PSARG_START_SIZE;
188	>	}
189	>	ptr = psargs;
190	>	t_read = 0;
191	>	toread = psarg_size;
192	>	while((size = read(fn, ptr, toread)) == toread){
193	>	psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE));
194	>	ptr = psargs+psarg_size;
195	>	t_read = psarg_size;
196	>	psarg_size+=PSARG_START_SIZE;
197	>	toread = PSARG_START_SIZE;
198	>	}
199	>	if(size != -1) t_read+=size;
200	>
201	>	ptr = psargs;
202	>	for(x=0; x<t_read; x++){
203	>	if (*ptr == '\0') *ptr = ' ';
204	>	ptr++;
205	>	}
206	>	/*  for safety sake */
207	>	psargs[t_read] = '\0';
208	>
209	>	proc_state_ptr->proctitle = strdup(psargs);
210	>
211		#endif
212
213	+	proc_state_size++;
214
215		fclose(f);
216		}
217		closedir(proc_dir);
218	<	*ps = proc_state;
218	>	#endif
219
220	+	#ifdef ALLBSD
221	+	mib[0] = CTL_KERN;
222	+	mib[1] = KERN_PROC;
223	+	mib[2] = KERN_PROC_ALL;
224	+
225	+	if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
226	+	return -1;
227	+	}
228	+
229	+	procs = size / sizeof(struct kinfo_proc);
230	+
231	+	kp_stats = malloc(size);
232	+	if(kp_stats == NULL) {
233	+	return -1;
234	+	}
235	+
236	+	if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
237	+	free(kp_stats);
238	+	return -1;
239	+	}
240	+
241	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
242	+	kvmd = get_kvm2();
243	+	#endif
244	+
245	+	for (i = 0; i < procs; i++) {
246	+	/* replace with something more sensible */
247	+	proc_state = realloc(proc_state,
248	+	(1+proc_state_size)*sizeof(proc_state_t));
249	+	if(proc_state == NULL ) {
250	+	return -1;
251	+	}
252	+	proc_state_ptr = proc_state+proc_state_size;
253	+
254	+	#ifdef FREEBSD5
255	+	proc_state_ptr->process_name =
256	+	strdup(kp_stats[i].ki_comm);
257	+	#elif defined(DFBSD)
258	+	proc_state_ptr->process_name =
259	+	strdup(kp_stats[i].kp_thread.td_comm);
260	+	#else
261	+	proc_state_ptr->process_name =
262	+	strdup(kp_stats[i].kp_proc.p_comm);
263	+	#endif
264	+
265	+	#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
266	+	size = sizeof(buflen);
267	+
268	+	#ifdef FREEBSD5
269	+	if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
270	+	return -1;
271	+	}
272	+	#else
273	+	mib[1] = KERN_ARGMAX;
274	+
275	+	if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
276	+	return -1;
277	+	}
278	+	#endif
279	+
280	+	proctitle = malloc(buflen);
281	+	if(proctitle == NULL) {
282	+	return -1;
283	+	}
284	+
285	+	size = buflen;
286	+
287	+	#ifdef FREEBSD5
288	+	mib[2] = KERN_PROC_ARGS;
289	+	mib[3] = kp_stats[i].ki_pid;
290	+	#else
291	+	mib[1] = KERN_PROC_ARGS;
292	+	mib[2] = kp_stats[i].kp_proc.p_pid;
293	+	mib[3] = KERN_PROC_ARGV;
294	+	#endif
295	+
296	+	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
297	+	free(proctitle);
298	+	proc_state_ptr->proctitle = NULL;
299	+	}
300	+	else if(size > 0) {
301	+	proc_state_ptr->proctitle = malloc(size+1);
302	+	if(proc_state_ptr->proctitle == NULL) {
303	+	return -1;
304	+	}
305	+	p = proctitle;
306	+	proc_state_ptr->proctitle[0] = NULL;
307	+	do {
308	+	strlcat(proc_state_ptr->proctitle, p, size+1);
309	+	strlcat(proc_state_ptr->proctitle, " ", size+1);
310	+	p += strlen(p) + 1;
311	+	} while (p < proctitle + size);
312	+	free(proctitle);
313	+	/* remove trailing space */
314	+	proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
315	+	}
316	+	else {
317	+	free(proctitle);
318	+	proc_state_ptr->proctitle = NULL;
319	+	}
320	+	#else
321	+	if(kvmd != NULL) {
322	+	args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
323	+	if(args != NULL) {
324	+	alloc = 1;
325	+	proctitle = malloc(alloc);
326	+	if(proctitle == NULL) {
327	+	return -1;
328	+	}
329	+	while(*args != NULL) {
330	+	if(strlen(proctitle) + strlen(*args) >= alloc) {
331	+	alloc = (alloc + strlen(*args)) * 2;
332	+	proctitletmp = realloc(proctitle, alloc);
333	+	if(proctitletmp == NULL) {
334	+	return -1;
335	+	}
336	+	proctitle = proctitletmp;
337	+	}
338	+	strlcat(proctitle, *args, alloc);
339	+	strlcat(proctitle, " ", alloc);
340	+	args++;
341	+	}
342	+	/* remove trailing space */
343	+	proctitle[strlen(proctitle)-1] = '\0';
344	+	proc_state_ptr->proctitle = proctitle;
345	+	}
346	+	else {
347	+	proc_state_ptr->proctitle = NULL;
348	+	}
349	+	}
350	+	else {
351	+	proc_state_ptr->proctitle = NULL;
352	+	}
353	+	#endif
354	+
355	+	#ifdef FREEBSD5
356	+	proc_state_ptr->pid = kp_stats[i].ki_pid;
357	+	proc_state_ptr->parent = kp_stats[i].ki_ppid;
358	+	proc_state_ptr->pgid = kp_stats[i].ki_pgid;
359	+	#else
360	+	proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
361	+	proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
362	+	proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
363	+	#endif
364	+
365	+	#ifdef FREEBSD5
366	+	proc_state_ptr->uid = kp_stats[i].ki_ruid;
367	+	proc_state_ptr->euid = kp_stats[i].ki_uid;
368	+	proc_state_ptr->gid = kp_stats[i].ki_rgid;
369	+	proc_state_ptr->egid = kp_stats[i].ki_svgid;
370	+	#elif defined(DFBSD)
371	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_ucred.cr_ruid;
372	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_ucred.cr_svuid;
373	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_ucred.cr_rgid;
374	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_ucred.cr_svgid;
375	+	#else
376	+	proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
377	+	proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
378	+	proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
379	+	proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
380	+	#endif
381	+
382	+	#ifdef FREEBSD5
383	+	proc_state_ptr->proc_size = kp_stats[i].ki_size;
384	+	/* This is in pages */
385	+	proc_state_ptr->proc_resident =
386	+	kp_stats[i].ki_rssize * getpagesize();
387	+	/* This is in microseconds */
388	+	proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
389	+	proc_state_ptr->cpu_percent =
390	+	((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
391	+	proc_state_ptr->nice = kp_stats[i].ki_nice;
392	+	#else
393	+	proc_state_ptr->proc_size =
394	+	kp_stats[i].kp_eproc.e_vm.vm_map.size;
395	+	/* This is in pages */
396	+	proc_state_ptr->proc_resident =
397	+	kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
398	+	#if defined(NETBSD) || defined(OPENBSD)
399	+	proc_state_ptr->time_spent =
400	+	kp_stats[i].kp_proc.p_rtime.tv_sec;
401	+	#elif defined(DFBSD)
402	+	proc_state_ptr->time_spent =
403	+	( kp_stats[i].kp_thread.td_uticks +
404	+	kp_stats[i].kp_thread.td_sticks +
405	+	kp_stats[i].kp_thread.td_iticks ) / 1000000;
406	+	#else
407	+	/* This is in microseconds */
408	+	proc_state_ptr->time_spent =
409	+	kp_stats[i].kp_proc.p_runtime / 1000000;
410	+	#endif
411	+	proc_state_ptr->cpu_percent =
412	+	((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
413	+	proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
414	+	#endif
415	+
416	+	#ifdef FREEBSD5
417	+	switch (kp_stats[i].ki_stat) {
418	+	#else
419	+	switch (kp_stats[i].kp_proc.p_stat) {
420	+	#endif
421	+	case SIDL:
422	+	case SRUN:
423	+	#ifdef SONPROC
424	+	case SONPROC: /* NetBSD */
425	+	#endif
426	+	proc_state_ptr->state = RUNNING;
427	+	break;
428	+	case SSLEEP:
429	+	#ifdef SWAIT
430	+	case SWAIT: /* FreeBSD 5 */
431	+	#endif
432	+	#ifdef SLOCK
433	+	case SLOCK: /* FreeBSD 5 */
434	+	#endif
435	+	proc_state_ptr->state = SLEEPING;
436	+	break;
437	+	case SSTOP:
438	+	proc_state_ptr->state = STOPPED;
439	+	break;
440	+	case SZOMB:
441	+	#ifdef SDEAD
442	+	case SDEAD: /* OpenBSD & NetBSD */
443	+	#endif
444	+	proc_state_ptr->state = ZOMBIE;
445	+	break;
446	+	default:
447	+	proc_state_ptr->state = UNKNOWN;
448	+	break;
449	+	}
450	+	proc_state_size++;
451	+	}
452	+
453	+	free(kp_stats);
454	+	#endif
455	+
456	+	#ifdef CYGWIN
457	+	return -1;
458	+	#endif
459	+
460	+	*ps = proc_state;
461		return proc_state_size;
462		}
463
464	+	process_stat_t *get_process_stats() {
465	+	static process_stat_t process_stat;
466	+	proc_state_t *ps;
467	+	int ps_size, x;
468	+
469	+	process_stat.sleeping = 0;
470	+	process_stat.running = 0;
471	+	process_stat.zombie = 0;
472	+	process_stat.stopped = 0;
473	+	process_stat.total = 0;
474	+
475	+	ps_size = get_proc_snapshot(&ps);
476	+
477	+	if(ps_size < 0) {
478	+	return NULL;
479	+	}
480	+
481	+	for(x = 0; x < ps_size; x++) {
482	+	switch (ps->state) {
483	+	case RUNNING:
484	+	process_stat.running++;
485	+	break;
486	+	case SLEEPING:
487	+	process_stat.sleeping++;
488	+	break;
489	+	case STOPPED:
490	+	process_stat.stopped++;
491	+	break;
492	+	case ZOMBIE:
493	+	process_stat.zombie++;
494	+	break;
495	+	default:
496	+	/* currently no mapping for UNKNOWN in process_stat_t */
497	+	break;
498	+	}
499	+	ps++;
500	+	}
501	+
502	+	process_stat.total = ps_size;
503	+
504	+	return &process_stat;
505	+	}

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