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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 1.44 by tdb, Sun Apr 4 23:24:42 2004 UTC vs.
Revision 1.48 by ats, Mon Apr 5 01:41:25 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 68 | Line 70
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	+	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, *proctitletmp;
93	>	char *proctitle;
94		#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
95		kvm_t *kvmd;
96		char **args;
97		int alloc;
98	+	char *proctitletmp;
99		#else
100		long buflen;
101		char *p;
#	Line 100 | Line 114 | int get_proc_snapshot(proc_state_t **ps){
114		/* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
115		char ps_name[4096];
116		char *ptr;
117	<	static char *psargs = NULL;
104	<	static int psarg_size = 0;
117	>	VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
118		unsigned long stime, utime;
119		int x;
120		int fn;
121	<	int toread;
122	<	ssize_t size;
110	<	int t_read;
121	>	int len;
122	>	int rc;
123		#endif
124
125		if((proc_dir=opendir(PROC_LOCATION))==NULL){
#	Line 132 | Line 144 | int get_proc_snapshot(proc_state_t **ps){
144		fread(&process_info, sizeof(psinfo_t), 1, f);
145		#endif
146
147	<	proc_state = realloc(proc_state, (1+proc_state_size)*sizeof(proc_state_t));
147	>	if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
148	>	return -1;
149	>	}
150		proc_state_ptr = proc_state+proc_state_size;
151	+
152		#ifdef SOLARIS
153		proc_state_ptr->pid = process_info.pr_pid;
154		proc_state_ptr->parent = process_info.pr_ppid;
#	Line 167 | Line 182 | int get_proc_snapshot(proc_state_t **ps){
182		/* pa_name[0] should = '(' */
183		ptr = strchr(&ps_name[1], ')');
184		if(ptr !=NULL) *ptr='\0';
170	–	proc_state_ptr->process_name = strdup(&ps_name[1]);
185
186	+	if (update_string(&proc_state_ptr->process_name,
187	+	&ps_name[1]) == NULL) {
188	+	return -1;
189	+	}
190	+
191		/* Need to do cpu */
192
193
194	+	fclose(f);
195	+
196		/* proctitle */
197		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
198
#	Line 180 | Line 201 | int get_proc_snapshot(proc_state_t **ps){
201		* Ah well, move onwards to the next one */
202		continue;
203		}
204	<	#define         PSARG_START_SIZE 128
205	<	if(psargs == NULL){
206	<	psargs = malloc(PSARG_START_SIZE);
207	<	psarg_size = PSARG_START_SIZE;
204	>
205	>	#define READ_BLOCK_SIZE 128
206	>	len = 0;
207	>	do {
208	>	if (VECTOR_RESIZE(psargs, len + READ_BLOCK_SIZE + 1) < 0) {
209	>	return -1;
210	>	}
211	>	rc = read(fn, psargs + len, READ_BLOCK_SIZE);
212	>	if (rc > 0) {
213	>	len += rc;
214	>	}
215	>	} while (rc == READ_BLOCK_SIZE);
216	>	close(fn);
217	>
218	>	if (rc == -1) {
219	>	/* Read failed; move on. */
220	>	continue;
221		}
188	–	ptr = psargs;
189	–	t_read = 0;
190	–	toread = psarg_size;
191	–	while((size = read(fn, ptr, toread)) == toread){
192	–	psargs = realloc(psargs, (psarg_size + PSARG_START_SIZE));
193	–	ptr = psargs+psarg_size;
194	–	t_read = psarg_size;
195	–	psarg_size+=PSARG_START_SIZE;
196	–	toread = PSARG_START_SIZE;
197	–	}
198	–	if(size != -1) t_read+=size;
222
223	+	/* Turn \0s into spaces within the command line. */
224		ptr = psargs;
225	<	for(x=0; x<t_read; x++){
225	>	for(x = 0; x < len; x++) {
226		if (*ptr == '\0') *ptr = ' ';
227		ptr++;
228		}
229	<	/*  for safety sake */
230	<	psargs[t_read] = '\0';
229	>	/* for safety's sake */
230	>	psargs[len] = '\0';
231
232	<	proc_state_ptr->proctitle = strdup(psargs);
233	<
232	>	if (update_string(&proc_state_ptr->proctitle, psargs) == NULL) {
233	>	return -1;
234	>	}
235		#endif
236
237		proc_state_size++;
213	–
214	–	fclose(f);
238		}
239		closedir(proc_dir);
240		#endif
#	Line 222 | Line 245 | int get_proc_snapshot(proc_state_t **ps){
245		mib[2] = KERN_PROC_ALL;
246
247		if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
248	<	return NULL;
248	>	return -1;
249		}
250
251		procs = size / sizeof(struct kinfo_proc);
252
253		kp_stats = malloc(size);
254		if(kp_stats == NULL) {
255	<	return NULL;
255	>	return -1;
256		}
257
258		if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
259		free(kp_stats);
260	<	return NULL;
260	>	return -1;
261		}
262
263		#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
#	Line 242 | Line 265 | int get_proc_snapshot(proc_state_t **ps){
265		#endif
266
267		for (i = 0; i < procs; i++) {
268	<	/* replace with something more sensible */
269	<	proc_state = realloc(proc_state,
270	<	(1+proc_state_size)*sizeof(proc_state_t));
271	<	if(proc_state == NULL ) {
249	<	return NULL;
268	>	const char *name;
269	>
270	>	if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
271	>	return -1;
272		}
273		proc_state_ptr = proc_state+proc_state_size;
274
275		#ifdef FREEBSD5
276	<	proc_state_ptr->process_name =
255	<	strdup(kp_stats[i].ki_comm);
276	>	name = kp_stats[i].ki_comm;
277		#elif defined(DFBSD)
278	<	proc_state_ptr->process_name =
258	<	strdup(kp_stats[i].kp_thread.td_comm);
278	>	name = kp_stats[i].kp_thread.td_comm;
279		#else
280	<	proc_state_ptr->process_name =
261	<	strdup(kp_stats[i].kp_proc.p_comm);
280	>	name = kp_stats[i].kp_proc.p_comm;
281		#endif
282	+	if (update_string(&proc_state_ptr->process_name, name) == NULL) {
283	+	return -1;
284	+	}
285
286		#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
287		size = sizeof(buflen);
288
289		#ifdef FREEBSD5
290		if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
291	<	return NULL;
291	>	return -1;
292		}
293		#else
294		mib[1] = KERN_ARGMAX;
295
296		if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
297	<	return NULL;
297	>	return -1;
298		}
299		#endif
300
301		proctitle = malloc(buflen);
302		if(proctitle == NULL) {
303	<	return NULL;
303	>	return -1;
304		}
305
306		size = buflen;
#	Line 292 | Line 314 | int get_proc_snapshot(proc_state_t **ps){
314		mib[3] = KERN_PROC_ARGV;
315		#endif
316
317	+	free(proc_state_ptr->proctitle);
318		if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
319		free(proctitle);
320		proc_state_ptr->proctitle = NULL;
#	Line 299 | Line 322 | int get_proc_snapshot(proc_state_t **ps){
322		else if(size > 0) {
323		proc_state_ptr->proctitle = malloc(size+1);
324		if(proc_state_ptr->proctitle == NULL) {
325	<	return NULL;
325	>	return -1;
326		}
327		p = proctitle;
328		proc_state_ptr->proctitle[0] = NULL;
#	Line 309 | Line 332 | int get_proc_snapshot(proc_state_t **ps){
332		p += strlen(p) + 1;
333		} while (p < proctitle + size);
334		free(proctitle);
335	<	/* remove trailing space */
336	<	proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = \0;
335	>	/* remove trailing space */
336	>	proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
337		}
338		else {
339		free(proctitle);
340		proc_state_ptr->proctitle = NULL;
341		}
342		#else
343	+	free(proc_state_ptr->proctitle);
344		if(kvmd != NULL) {
345		args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
346		if(args != NULL) {
347		alloc = 1;
348		proctitle = malloc(alloc);
349		if(proctitle == NULL) {
350	<	return NULL;
350	>	return -1;
351		}
352		while(*args != NULL) {
353		if(strlen(proctitle) + strlen(*args) >= alloc) {
354		alloc = (alloc + strlen(*args)) * 2;
355		proctitletmp = realloc(proctitle, alloc);
356		if(proctitletmp == NULL) {
357	<	return NULL;
357	>	return -1;
358		}
359		proctitle = proctitletmp;
360		}
#	Line 339 | Line 363 | int get_proc_snapshot(proc_state_t **ps){
363		args++;
364		}
365		/* remove trailing space */
366	<	proctitle[strlen(proctitle)-1] = \0;
366	>	proctitle[strlen(proctitle)-1] = '\0';
367		proc_state_ptr->proctitle = proctitle;
368		}
369		else {
#	Line 452 | Line 476 | int get_proc_snapshot(proc_state_t **ps){
476		free(kp_stats);
477		#endif
478
479	+	#ifdef CYGWIN
480	+	return -1;
481	+	#endif
482	+
483		*ps = proc_state;
484		return proc_state_size;
485		}
#	Line 469 | Line 497 | process_stat_t *get_process_stats() {
497
498		ps_size = get_proc_snapshot(&ps);
499
500	<	if(ps_size == 0) {
500	>	if(ps_size < 0) {
501		return NULL;
502		}
503

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