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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 1.53 by ats, Mon Apr 5 18:10:11 2004 UTC vs.
Revision 1.74 by ats, Sun Jul 18 21:30:11 2004 UTC

#	Line 1 | Line 1
1		/*
2	<	* i-scream central monitoring system
2	>	* i-scream libstatgrab
3		* http://www.i-scream.org
4		* Copyright (C) 2000-2004 i-scream
5		*
#	Line 51 | Line 51
51		#define MAX_FILE_LENGTH PATH_MAX
52		#endif
53		#ifdef ALLBSD
54	+	#include <errno.h>
55		#include <stdlib.h>
56		#include <sys/param.h>
57		#include <sys/sysctl.h>
#	Line 65 | Line 66
66		#include <limits.h>
67		#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
68		#include <kvm.h>
68	–	#include <tools.h>
69		#endif
70		#include <unistd.h>
71	+	#ifdef NETBSD2
72	+	#include <sys/lwp.h>
73		#endif
74	+	#endif
75
76		static void proc_state_init(sg_process_stats *s) {
77		s->process_name = NULL;
#	Line 82 | Line 85 | static void proc_state_destroy(sg_process_stats *s) {
85
86		sg_process_stats *sg_get_process_stats(int *entries){
87		VECTOR_DECLARE_STATIC(proc_state, sg_process_stats, 64,
88	<	proc_state_init, proc_state_destroy);
88	>	proc_state_init, proc_state_destroy);
89		int proc_state_size = 0;
90		sg_process_stats *proc_state_ptr;
91		#ifdef ALLBSD
#	Line 97 | Line 100 | sg_process_stats *sg_get_process_stats(int *entries){
100		int argslen = 0;
101		#else
102		long buflen;
103	<	char *p;
103	>	char *p, *proctitletmp;
104		#endif
105	+	#ifdef NETBSD2
106	+	int lwps;
107	+	struct kinfo_lwp *kl_stats;
108		#endif
109	+	#endif
110		#if defined(SOLARIS) || defined(LINUX)
111	<	DIR *proc_dir;
112	<	struct dirent *dir_entry;
113	<	char filename[MAX_FILE_LENGTH];
114	<	FILE *f;
111	>	DIR *proc_dir;
112	>	struct dirent *dir_entry;
113	>	char filename[MAX_FILE_LENGTH];
114	>	FILE *f;
115		#ifdef SOLARIS
116		psinfo_t process_info;
117		#endif
#	Line 114 | Line 121 | sg_process_stats *sg_get_process_stats(int *entries){
121		char ps_name[4096];
122		char *ptr;
123		VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
124	<	unsigned long stime, utime;
124	>	unsigned long stime, utime, starttime;
125		int x;
126		int fn;
127		int len;
128		int rc;
129	+	time_t uptime;
130		#endif
131
132	<	if((proc_dir=opendir(PROC_LOCATION))==NULL){
133	<	return NULL;
134	<	}
132	>	#ifdef LINUX
133	>	if ((f=fopen("/proc/uptime", "r")) == NULL) {
134	>	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/uptime");
135	>	return NULL;
136	>	}
137	>	if((fscanf(f,"%lu %*d",&uptime)) != 1){
138	>	sg_set_error(SG_ERROR_PARSE, NULL);
139	>	return NULL;
140	>	}
141	>	fclose(f);
142	>	#endif
143
144	<	while((dir_entry=readdir(proc_dir))!=NULL){
145	<	if(atoi(dir_entry->d_name) == 0) continue;
144	>	if((proc_dir=opendir(PROC_LOCATION))==NULL){
145	>	sg_set_error_with_errno(SG_ERROR_OPENDIR, PROC_LOCATION);
146	>	return NULL;
147	>	}
148
149	+	while((dir_entry=readdir(proc_dir))!=NULL){
150	+	if(atoi(dir_entry->d_name) == 0) continue;
151	+
152		#ifdef SOLARIS
153	<	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
153	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
154		#endif
155		#ifdef LINUX
156		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
157		#endif
158	<	if((f=fopen(filename, "r"))==NULL){
159	<	/* Open failed.. Process since vanished, or the path was too long.
160	<	* Ah well, move onwards to the next one */
161	<	continue;
162	<	}
158	>	if((f=fopen(filename, "r"))==NULL){
159	>	/* Open failed.. Process since vanished, or the path was too long.
160	>	* Ah well, move onwards to the next one */
161	>	continue;
162	>	}
163		#ifdef SOLARIS
164	<	fread(&process_info, sizeof(psinfo_t), 1, f);
164	>	fread(&process_info, sizeof(psinfo_t), 1, f);
165	>	fclose(f);
166		#endif
167
168		if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
#	Line 160 | Line 182 | sg_process_stats *sg_get_process_stats(int *entries){
182		proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
183		proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
184		proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
185	<	proc_state_ptr->process_name = strdup(process_info.pr_fname);
186	<	proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
185	>	proc_state_ptr->nice = (int)process_info.pr_lwp.pr_nice - 20;
186	>	if (sg_update_string(&proc_state_ptr->process_name,
187	>	process_info.pr_fname) < 0) {
188	>	return NULL;
189	>	}
190	>	if (sg_update_string(&proc_state_ptr->proctitle,
191	>	process_info.pr_psargs) < 0) {
192	>	return NULL;
193	>	}
194
195	<	if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
196	<	if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
197	<	if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
198	<	if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
199	<	if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
195	>	if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
196	>	if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
197	>	if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
198	>	if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
199	>	if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
200		#endif
201		#ifdef LINUX
202	<	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));
203	<	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
202	>	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));
203	>	/* +3 becuase man page says "Resident  Set Size: number of pages the process has in real memory, minus 3 for administrative purposes." */
204	>	proc_state_ptr->proc_resident = (proc_state_ptr->proc_resident + 3) * getpagesize();
205		if(s == 'S') proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
206		if(s == 'R') proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
207		if(s == 'Z') proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
#	Line 183 | Line 213 | sg_process_stats *sg_get_process_stats(int *entries){
213		if(ptr !=NULL) *ptr='\0';
214
215		if (sg_update_string(&proc_state_ptr->process_name,
216	<	&ps_name[1]) < 0) {
216	>	&ps_name[1]) < 0) {
217		return NULL;
218		}
219
220	<	/* Need to do cpu */
221	<
220	>	/* cpu */
221	>	proc_state_ptr->cpu_percent = (100.0 * (utime + stime)) / ((uptime * 100.0) - starttime);
222
223	<	fclose(f);
223	>	fclose(f);
224
225	+	/* uid / gid */
226	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
227	+	if ((f=fopen(filename, "r")) == NULL) {
228	+	/* Open failed.. Process since vanished, or the path was too long.
229	+	* Ah well, move onwards to the next one */
230	+	continue;
231	+	}
232	+
233	+	if((ptr=sg_f_read_line(f, "Uid:"))==NULL){
234	+	fclose(f);
235	+	continue;
236	+	}
237	+	sscanf(ptr, "Uid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->uid), &(proc_state_ptr->euid));
238	+
239	+	if((ptr=sg_f_read_line(f, "Gid:"))==NULL){
240	+	fclose(f);
241	+	continue;
242	+	}
243	+	sscanf(ptr, "Gid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->gid), &(proc_state_ptr->egid));
244	+
245	+	fclose(f);
246	+
247		/* proctitle */
248		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
249
250	<	if((fn=open(filename, O_RDONLY)) == -1){
251	<	/* Open failed.. Process since vanished, or the path was too long.
252	<	* Ah well, move onwards to the next one */
253	<	continue;
254	<	}
250	>	if((fn=open(filename, O_RDONLY)) == -1){
251	>	/* Open failed.. Process since vanished, or the path was too long.
252	>	* Ah well, move onwards to the next one */
253	>	continue;
254	>	}
255
256		#define READ_BLOCK_SIZE 128
257		len = 0;
#	Line 245 | Line 297 | sg_process_stats *sg_get_process_stats(int *entries){
297		#endif
298
299		proc_state_size++;
300	<	}
301	<	closedir(proc_dir);
300	>	}
301	>	closedir(proc_dir);
302		#endif
303
304		#ifdef ALLBSD
#	Line 255 | Line 307 | sg_process_stats *sg_get_process_stats(int *entries){
307		mib[2] = KERN_PROC_ALL;
308
309		if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
310	+	sg_set_error_with_errno(SG_ERROR_SYSCTL,
311	+	"CTL_KERN.KERN_PROC.KERN_PROC_ALL");
312		return NULL;
313		}
314
315		procs = size / sizeof(struct kinfo_proc);
316
317	<	kp_stats = malloc(size);
317	>	kp_stats = sg_malloc(size);
318		if(kp_stats == NULL) {
319		return NULL;
320		}
321	+	memset(kp_stats, 0, size);
322
323		if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
324	+	sg_set_error_with_errno(SG_ERROR_SYSCTL,
325	+	"CTL_KERN.KERN_PROC.KERN_PROC_ALL");
326		free(kp_stats);
327		return NULL;
328		}
#	Line 277 | Line 334 | sg_process_stats *sg_get_process_stats(int *entries){
334		for (i = 0; i < procs; i++) {
335		const char *name;
336
337	+	#ifdef FREEBSD5
338	+	if (kp_stats[i].ki_stat == 0) {
339	+	#else
340	+	if (kp_stats[i].kp_proc.p_stat == 0) {
341	+	#endif
342	+	/* FreeBSD 5 deliberately overallocates the array that
343	+	* the sysctl returns, so we'll get a few junk
344	+	* processes on the end that we have to ignore. (Search
345	+	* for "overestimate by 5 procs" in
346	+	* src/sys/kern/kern_proc.c for more details.) */
347	+	continue;
348	+	}
349	+
350		if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
351		return NULL;
352		}
#	Line 294 | Line 364 | sg_process_stats *sg_get_process_stats(int *entries){
364		}
365
366		#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
297	–	size = sizeof(buflen);
367
368		#ifdef FREEBSD5
300	–	if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
301	–	return NULL;
302	–	}
303	–	#else
304	–	mib[1] = KERN_ARGMAX;
305	–
306	–	if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
307	–	return NULL;
308	–	}
309	–	#endif
310	–
311	–	proctitle = malloc(buflen);
312	–	if(proctitle == NULL) {
313	–	return NULL;
314	–	}
315	–
316	–	size = buflen;
317	–
318	–	#ifdef FREEBSD5
369		mib[2] = KERN_PROC_ARGS;
370		mib[3] = kp_stats[i].ki_pid;
371		#else
#	Line 325 | Line 375 | sg_process_stats *sg_get_process_stats(int *entries){
375		#endif
376
377		free(proc_state_ptr->proctitle);
378	<	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
379	<	free(proctitle);
380	<	proc_state_ptr->proctitle = NULL;
381	<	}
382	<	else if(size > 0) {
383	<	proc_state_ptr->proctitle = malloc(size+1);
378	>	proc_state_ptr->proctitle = NULL;
379	>
380	>	/* Starting size - we'll double this straight away */
381	>	#define PROCTITLE_START_SIZE 64
382	>	buflen = PROCTITLE_START_SIZE;
383	>	size = buflen;
384	>	proctitle = NULL;
385	>
386	>	do {
387	>	if(size >= buflen) {
388	>	buflen *= 2;
389	>	size = buflen;
390	>	proctitletmp = sg_realloc(proctitle, buflen);
391	>	if(proctitletmp == NULL) {
392	>	free(proctitle);
393	>	proctitle = NULL;
394	>	proc_state_ptr->proctitle = NULL;
395	>	size = 0;
396	>	break;
397	>	}
398	>	proctitle = proctitletmp;
399	>	bzero(proctitle, buflen);
400	>	}
401	>
402	>	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
403	>	free(proctitle);
404	>	proctitle = NULL;
405	>	proc_state_ptr->proctitle = NULL;
406	>	size = 0;
407	>	break;
408	>	}
409	>	} while(size >= buflen);
410	>
411	>	if(size > 0) {
412	>	proc_state_ptr->proctitle = sg_malloc(size+1);
413		if(proc_state_ptr->proctitle == NULL) {
414		return NULL;
415		}
416		p = proctitle;
417	+	#ifdef OPENBSD
418	+	/* On OpenBSD, this value has the argv pointers (which
419	+	* are terminated by a NULL) at the front, so we have
420	+	* to skip over them to get to the strings. */
421	+	while (*(char ***)p != NULL) {
422	+	p += sizeof(char **);
423	+	}
424	+	p += sizeof(char **);
425	+	#endif
426		proc_state_ptr->proctitle[0] = '\0';
427		do {
428		sg_strlcat(proc_state_ptr->proctitle, p, size+1);
#	Line 342 | Line 430 | sg_process_stats *sg_get_process_stats(int *entries){
430		p += strlen(p) + 1;
431		} while (p < proctitle + size);
432		free(proctitle);
433	+	proctitle = NULL;
434		/* remove trailing space */
435		proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
436		}
437		else {
438	<	free(proctitle);
438	>	if(proctitle != NULL) {
439	>	free(proctitle);
440	>	proctitle = NULL;
441	>	}
442		proc_state_ptr->proctitle = NULL;
443		}
444		#else
445		free(proc_state_ptr->proctitle);
446	+	proc_state_ptr->proctitle = NULL;
447		if(kvmd != NULL) {
448		args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
449		if(args != NULL) {
#	Line 359 | Line 452 | sg_process_stats *sg_get_process_stats(int *entries){
452		argslen += strlen(*argsp) + 1;
453		argsp++;
454		}
455	<	proctitle = malloc(argslen + 1);
455	>	proctitle = sg_malloc(argslen + 1);
456		proctitle[0] = '\0';
457		if(proctitle == NULL) {
458		return NULL;
#	Line 443 | Line 536 | sg_process_stats *sg_get_process_stats(int *entries){
536		proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
537		#endif
538
539	+	#ifdef NETBSD2
540	+	{
541	+	size_t size;
542	+	int mib[5];
543	+
544	+	mib[0] = CTL_KERN;
545	+	mib[1] = KERN_LWP;
546	+	mib[2] = kp_stats[i].kp_proc.p_pid;
547	+	mib[3] = sizeof(struct kinfo_lwp);
548	+	mib[4] = 0;
549	+
550	+	if(sysctl(mib, 5, NULL, &size, NULL, 0) < 0) {
551	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.0");
552	+	return NULL;
553	+	}
554	+
555	+	lwps = size / sizeof(struct kinfo_lwp);
556	+	mib[4] = lwps;
557	+
558	+	kl_stats = sg_malloc(size);
559	+	if(kl_stats == NULL) {
560	+	return NULL;
561	+	}
562	+
563	+	if(sysctl(mib, 5, kl_stats, &size, NULL, 0) < 0) {
564	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.buffersize");
565	+	return NULL;
566	+	}
567	+	}
568	+
569	+	switch(kp_stats[i].kp_proc.p_stat) {
570	+	case SIDL:
571	+	proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
572	+	break;
573	+	case SACTIVE:
574	+	{
575	+	int i;
576	+
577	+	for(i = 0; i < lwps; i++) {
578	+	switch(kl_stats[i].l_stat) {
579	+	case LSONPROC:
580	+	case LSRUN:
581	+	proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
582	+	goto end;
583	+	case LSSLEEP:
584	+	proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
585	+	goto end;
586	+	case LSSTOP:
587	+	case LSSUSPENDED:
588	+	proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
589	+	goto end;
590	+	}
591	+	proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
592	+	}
593	+	end: ;
594	+	}
595	+	break;
596	+	case SSTOP:
597	+	proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
598	+	break;
599	+	case SZOMB:
600	+	proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
601	+	break;
602	+	default:
603	+	proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
604	+	break;
605	+	}
606	+
607	+	free(kl_stats);
608	+	#else
609		#ifdef FREEBSD5
610		switch (kp_stats[i].ki_stat) {
611		#else
#	Line 477 | Line 640 | sg_process_stats *sg_get_process_stats(int *entries){
640		proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
641		break;
642		}
643	+	#endif
644		proc_state_size++;
645		}
646
#	Line 484 | Line 648 | sg_process_stats *sg_get_process_stats(int *entries){
648		#endif
649
650		#ifdef CYGWIN
651	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
652		return NULL;
653		#endif
654
#	Line 533 | Line 698 | sg_process_count *sg_get_process_count() {
698
699		return &process_stat;
700		}
701	+
702	+	int sg_process_compare_name(const void *va, const void *vb) {
703	+	const sg_process_stats *a = (sg_process_stats *)va;
704	+	const sg_process_stats *b = (sg_process_stats *)vb;
705	+
706	+	return strcmp(a->process_name, b->process_name);
707	+	}
708	+
709	+	int sg_process_compare_pid(const void *va, const void *vb) {
710	+	const sg_process_stats *a = (sg_process_stats *)va;
711	+	const sg_process_stats *b = (sg_process_stats *)vb;
712	+
713	+	if (a->pid < b->pid) {
714	+	return -1;
715	+	} else if (a->pid == b->pid) {
716	+	return 0;
717	+	} else {
718	+	return 1;
719	+	}
720	+	}
721	+
722	+	int sg_process_compare_uid(const void *va, const void *vb) {
723	+	const sg_process_stats *a = (sg_process_stats *)va;
724	+	const sg_process_stats *b = (sg_process_stats *)vb;
725	+
726	+	if (a->uid < b->uid) {
727	+	return -1;
728	+	} else if (a->uid == b->uid) {
729	+	return 0;
730	+	} else {
731	+	return 1;
732	+	}
733	+	}
734	+
735	+	int sg_process_compare_gid(const void *va, const void *vb) {
736	+	const sg_process_stats *a = (sg_process_stats *)va;
737	+	const sg_process_stats *b = (sg_process_stats *)vb;
738	+
739	+	if (a->gid < b->gid) {
740	+	return -1;
741	+	} else if (a->gid == b->gid) {
742	+	return 0;
743	+	} else {
744	+	return 1;
745	+	}
746	+	}
747	+
748	+	int sg_process_compare_size(const void *va, const void *vb) {
749	+	const sg_process_stats *a = (sg_process_stats *)va;
750	+	const sg_process_stats *b = (sg_process_stats *)vb;
751	+
752	+	if (a->proc_size < b->proc_size) {
753	+	return -1;
754	+	} else if (a->proc_size == b->proc_size) {
755	+	return 0;
756	+	} else {
757	+	return 1;
758	+	}
759	+	}
760	+
761	+	int sg_process_compare_res(const void *va, const void *vb) {
762	+	const sg_process_stats *a = (sg_process_stats *)va;
763	+	const sg_process_stats *b = (sg_process_stats *)vb;
764	+
765	+	if (a->proc_resident < b->proc_resident) {
766	+	return -1;
767	+	} else if (a->proc_resident == b->proc_resident) {
768	+	return 0;
769	+	} else {
770	+	return 1;
771	+	}
772	+	}
773	+
774	+	int sg_process_compare_cpu(const void *va, const void *vb) {
775	+	const sg_process_stats *a = (sg_process_stats *)va;
776	+	const sg_process_stats *b = (sg_process_stats *)vb;
777	+
778	+	if (a->cpu_percent < b->cpu_percent) {
779	+	return -1;
780	+	} else if (a->cpu_percent == b->cpu_percent) {
781	+	return 0;
782	+	} else {
783	+	return 1;
784	+	}
785	+	}
786	+
787	+	int sg_process_compare_time(const void *va, const void *vb) {
788	+	const sg_process_stats *a = (sg_process_stats *)va;
789	+	const sg_process_stats *b = (sg_process_stats *)vb;
790	+
791	+	if (a->time_spent < b->time_spent) {
792	+	return -1;
793	+	} else if (a->time_spent == b->time_spent) {
794	+	return 0;
795	+	} else {
796	+	return 1;
797	+	}
798	+	}
799	+

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