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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 1.56 by tdb, Tue Apr 6 14:44:29 2004 UTC vs.
Revision 1.76 by tdb, Mon Nov 1 18:30:17 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	+	#ifdef HPUX
76	+	#include <sys/param.h>
77	+	#include <sys/pstat.h>
78	+	#include <unistd.h>
79	+	#endif
80
81		static void proc_state_init(sg_process_stats *s) {
82		s->process_name = NULL;
#	Line 85 | Line 90 | static void proc_state_destroy(sg_process_stats *s) {
90
91		sg_process_stats *sg_get_process_stats(int *entries){
92		VECTOR_DECLARE_STATIC(proc_state, sg_process_stats, 64,
93	<	proc_state_init, proc_state_destroy);
93	>	proc_state_init, proc_state_destroy);
94		int proc_state_size = 0;
95		sg_process_stats *proc_state_ptr;
96	+	#ifdef HPUX
97	+	struct pst_status pstat_procinfo;
98	+	long procidx = 0;
99	+	long long pagesize = 0;
100	+	#endif
101		#ifdef ALLBSD
102		int mib[4];
103		size_t size;
#	Line 100 | Line 110 | sg_process_stats *sg_get_process_stats(int *entries){
110		int argslen = 0;
111		#else
112		long buflen;
113	<	char *p;
113	>	char *p, *proctitletmp;
114		#endif
115		#ifdef NETBSD2
116		int lwps;
#	Line 108 | Line 118 | sg_process_stats *sg_get_process_stats(int *entries){
118		#endif
119		#endif
120		#if defined(SOLARIS) || defined(LINUX)
121	<	DIR *proc_dir;
122	<	struct dirent *dir_entry;
123	<	char filename[MAX_FILE_LENGTH];
124	<	FILE *f;
121	>	DIR *proc_dir;
122	>	struct dirent *dir_entry;
123	>	char filename[MAX_FILE_LENGTH];
124	>	FILE *f;
125		#ifdef SOLARIS
126		psinfo_t process_info;
127		#endif
#	Line 121 | Line 131 | sg_process_stats *sg_get_process_stats(int *entries){
131		char ps_name[4096];
132		char *ptr;
133		VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
134	<	unsigned long stime, utime;
134	>	unsigned long stime, utime, starttime;
135		int x;
136		int fn;
137		int len;
138		int rc;
139	+	time_t uptime;
140		#endif
141
142	<	if((proc_dir=opendir(PROC_LOCATION))==NULL){
143	<	return NULL;
144	<	}
142	>	#ifdef LINUX
143	>	if ((f=fopen("/proc/uptime", "r")) == NULL) {
144	>	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/uptime");
145	>	return NULL;
146	>	}
147	>	if((fscanf(f,"%lu %*d",&uptime)) != 1){
148	>	sg_set_error(SG_ERROR_PARSE, NULL);
149	>	return NULL;
150	>	}
151	>	fclose(f);
152	>	#endif
153
154	<	while((dir_entry=readdir(proc_dir))!=NULL){
155	<	if(atoi(dir_entry->d_name) == 0) continue;
154	>	if((proc_dir=opendir(PROC_LOCATION))==NULL){
155	>	sg_set_error_with_errno(SG_ERROR_OPENDIR, PROC_LOCATION);
156	>	return NULL;
157	>	}
158
159	+	while((dir_entry=readdir(proc_dir))!=NULL){
160	+	if(atoi(dir_entry->d_name) == 0) continue;
161	+
162		#ifdef SOLARIS
163	<	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
163	>	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
164		#endif
165		#ifdef LINUX
166		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
167		#endif
168	<	if((f=fopen(filename, "r"))==NULL){
169	<	/* Open failed.. Process since vanished, or the path was too long.
170	<	* Ah well, move onwards to the next one */
171	<	continue;
172	<	}
168	>	if((f=fopen(filename, "r"))==NULL){
169	>	/* Open failed.. Process since vanished, or the path was too long.
170	>	* Ah well, move onwards to the next one */
171	>	continue;
172	>	}
173		#ifdef SOLARIS
174	<	fread(&process_info, sizeof(psinfo_t), 1, f);
174	>	fread(&process_info, sizeof(psinfo_t), 1, f);
175	>	fclose(f);
176		#endif
177
178		if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
#	Line 167 | Line 192 | sg_process_stats *sg_get_process_stats(int *entries){
192		proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
193		proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
194		proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
195	<	proc_state_ptr->process_name = strdup(process_info.pr_fname);
196	<	proc_state_ptr->proctitle = strdup(process_info.pr_psargs);
195	>	proc_state_ptr->nice = (int)process_info.pr_lwp.pr_nice - 20;
196	>	if (sg_update_string(&proc_state_ptr->process_name,
197	>	process_info.pr_fname) < 0) {
198	>	return NULL;
199	>	}
200	>	if (sg_update_string(&proc_state_ptr->proctitle,
201	>	process_info.pr_psargs) < 0) {
202	>	return NULL;
203	>	}
204
205	<	if(process_info.pr_lwp.pr_state==1) proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
206	<	if(process_info.pr_lwp.pr_state==2) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
207	<	if(process_info.pr_lwp.pr_state==3) proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
208	<	if(process_info.pr_lwp.pr_state==4) proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
209	<	if(process_info.pr_lwp.pr_state==6) proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
205	>	switch (process_info.pr_lwp.pr_state) {
206	>	case 1:
207	>	proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
208	>	break;
209	>	case 2:
210	>	case 5:
211	>	proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
212	>	break;
213	>	case 3:
214	>	proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
215	>	break;
216	>	case 4:
217	>	proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
218	>	break;
219	>	}
220		#endif
221		#ifdef LINUX
222	<	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));
223	<	proc_state_ptr->proc_resident = proc_state_ptr->proc_resident * getpagesize();
224	<	if(s == 'S') proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
225	<	if(s == 'R') proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
226	<	if(s == 'Z') proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
227	<	if(s == 'T') proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
228	<	if(s == 'D') proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
222	>	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));
223	>	/* +3 becuase man page says "Resident  Set Size: number of pages the process has in real memory, minus 3 for administrative purposes." */
224	>	proc_state_ptr->proc_resident = (proc_state_ptr->proc_resident + 3) * getpagesize();
225	>	switch (s) {
226	>	case 'S':
227	>	proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
228	>	break;
229	>	case 'R':
230	>	proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
231	>	break;
232	>	case 'Z':
233	>	proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
234	>	break;
235	>	case 'T':
236	>	case 'D':
237	>	proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
238	>	break;
239	>	}
240
241		/* pa_name[0] should = '(' */
242		ptr = strchr(&ps_name[1], ')');
243		if(ptr !=NULL) *ptr='\0';
244
245		if (sg_update_string(&proc_state_ptr->process_name,
246	<	&ps_name[1]) < 0) {
246	>	&ps_name[1]) < 0) {
247		return NULL;
248		}
249
250	<	/* Need to do cpu */
251	<
250	>	/* cpu */
251	>	proc_state_ptr->cpu_percent = (100.0 * (utime + stime)) / ((uptime * 100.0) - starttime);
252
253	<	fclose(f);
253	>	fclose(f);
254
255	+	/* uid / gid */
256	+	snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
257	+	if ((f=fopen(filename, "r")) == NULL) {
258	+	/* Open failed.. Process since vanished, or the path was too long.
259	+	* Ah well, move onwards to the next one */
260	+	continue;
261	+	}
262	+
263	+	if((ptr=sg_f_read_line(f, "Uid:"))==NULL){
264	+	fclose(f);
265	+	continue;
266	+	}
267	+	sscanf(ptr, "Uid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->uid), &(proc_state_ptr->euid));
268	+
269	+	if((ptr=sg_f_read_line(f, "Gid:"))==NULL){
270	+	fclose(f);
271	+	continue;
272	+	}
273	+	sscanf(ptr, "Gid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->gid), &(proc_state_ptr->egid));
274	+
275	+	fclose(f);
276	+
277		/* proctitle */
278		snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);
279
280	<	if((fn=open(filename, O_RDONLY)) == -1){
281	<	/* Open failed.. Process since vanished, or the path was too long.
282	<	* Ah well, move onwards to the next one */
283	<	continue;
284	<	}
280	>	if((fn=open(filename, O_RDONLY)) == -1){
281	>	/* Open failed.. Process since vanished, or the path was too long.
282	>	* Ah well, move onwards to the next one */
283	>	continue;
284	>	}
285
286		#define READ_BLOCK_SIZE 128
287		len = 0;
#	Line 252 | Line 327 | sg_process_stats *sg_get_process_stats(int *entries){
327		#endif
328
329		proc_state_size++;
330	<	}
331	<	closedir(proc_dir);
330	>	}
331	>	closedir(proc_dir);
332		#endif
333
334		#ifdef ALLBSD
#	Line 262 | Line 337 | sg_process_stats *sg_get_process_stats(int *entries){
337		mib[2] = KERN_PROC_ALL;
338
339		if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
340	+	sg_set_error_with_errno(SG_ERROR_SYSCTL,
341	+	"CTL_KERN.KERN_PROC.KERN_PROC_ALL");
342		return NULL;
343		}
344
345		procs = size / sizeof(struct kinfo_proc);
346
347	<	kp_stats = malloc(size);
347	>	kp_stats = sg_malloc(size);
348		if(kp_stats == NULL) {
349		return NULL;
350		}
351		memset(kp_stats, 0, size);
352
353		if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
354	+	sg_set_error_with_errno(SG_ERROR_SYSCTL,
355	+	"CTL_KERN.KERN_PROC.KERN_PROC_ALL");
356		free(kp_stats);
357		return NULL;
358		}
#	Line 315 | Line 394 | sg_process_stats *sg_get_process_stats(int *entries){
394		}
395
396		#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)
318	–	size = sizeof(buflen);
397
398		#ifdef FREEBSD5
321	–	if(sysctlbyname("kern.ps_arg_cache_limit", &buflen, &size, NULL, 0) < 0) {
322	–	return NULL;
323	–	}
324	–	#else
325	–	/* FIXME - this value can be too large on some of
326	–	the BSD's, which causes sysctl not to return
327	–	anything. Maybe we need something smaller? */
328	–	mib[1] = KERN_ARGMAX;
329	–
330	–	if(sysctl(mib, 2, &buflen, &size, NULL, 0) < 0) {
331	–	return NULL;
332	–	}
333	–	#endif
334	–
335	–	proctitle = malloc(buflen);
336	–	if(proctitle == NULL) {
337	–	return NULL;
338	–	}
339	–
340	–	size = buflen;
341	–
342	–	#ifdef FREEBSD5
399		mib[2] = KERN_PROC_ARGS;
400		mib[3] = kp_stats[i].ki_pid;
401		#else
#	Line 349 | Line 405 | sg_process_stats *sg_get_process_stats(int *entries){
405		#endif
406
407		free(proc_state_ptr->proctitle);
408	<	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
409	<	free(proctitle);
410	<	proc_state_ptr->proctitle = NULL;
411	<	}
412	<	else if(size > 0) {
413	<	proc_state_ptr->proctitle = malloc(size+1);
408	>	proc_state_ptr->proctitle = NULL;
409	>
410	>	/* Starting size - we'll double this straight away */
411	>	#define PROCTITLE_START_SIZE 64
412	>	buflen = PROCTITLE_START_SIZE;
413	>	size = buflen;
414	>	proctitle = NULL;
415	>
416	>	do {
417	>	if(size >= buflen) {
418	>	buflen *= 2;
419	>	size = buflen;
420	>	proctitletmp = sg_realloc(proctitle, buflen);
421	>	if(proctitletmp == NULL) {
422	>	free(proctitle);
423	>	proctitle = NULL;
424	>	proc_state_ptr->proctitle = NULL;
425	>	size = 0;
426	>	break;
427	>	}
428	>	proctitle = proctitletmp;
429	>	bzero(proctitle, buflen);
430	>	}
431	>
432	>	if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
433	>	free(proctitle);
434	>	proctitle = NULL;
435	>	proc_state_ptr->proctitle = NULL;
436	>	size = 0;
437	>	break;
438	>	}
439	>	} while(size >= buflen);
440	>
441	>	if(size > 0) {
442	>	proc_state_ptr->proctitle = sg_malloc(size+1);
443		if(proc_state_ptr->proctitle == NULL) {
444		return NULL;
445		}
446		p = proctitle;
447	+	#ifdef OPENBSD
448	+	/* On OpenBSD, this value has the argv pointers (which
449	+	* are terminated by a NULL) at the front, so we have
450	+	* to skip over them to get to the strings. */
451	+	while (*(char ***)p != NULL) {
452	+	p += sizeof(char **);
453	+	}
454	+	p += sizeof(char **);
455	+	#endif
456		proc_state_ptr->proctitle[0] = '\0';
457		do {
458		sg_strlcat(proc_state_ptr->proctitle, p, size+1);
#	Line 366 | Line 460 | sg_process_stats *sg_get_process_stats(int *entries){
460		p += strlen(p) + 1;
461		} while (p < proctitle + size);
462		free(proctitle);
463	+	proctitle = NULL;
464		/* remove trailing space */
465		proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
466		}
467		else {
468	<	free(proctitle);
468	>	if(proctitle != NULL) {
469	>	free(proctitle);
470	>	proctitle = NULL;
471	>	}
472		proc_state_ptr->proctitle = NULL;
473		}
474		#else
475		free(proc_state_ptr->proctitle);
476	+	proc_state_ptr->proctitle = NULL;
477		if(kvmd != NULL) {
478		args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
479		if(args != NULL) {
#	Line 383 | Line 482 | sg_process_stats *sg_get_process_stats(int *entries){
482		argslen += strlen(*argsp) + 1;
483		argsp++;
484		}
485	<	proctitle = malloc(argslen + 1);
485	>	proctitle = sg_malloc(argslen + 1);
486		proctitle[0] = '\0';
487		if(proctitle == NULL) {
488		return NULL;
#	Line 479 | Line 578 | sg_process_stats *sg_get_process_stats(int *entries){
578		mib[4] = 0;
579
580		if(sysctl(mib, 5, NULL, &size, NULL, 0) < 0) {
581	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.0");
582		return NULL;
583		}
584
585		lwps = size / sizeof(struct kinfo_lwp);
586		mib[4] = lwps;
587
588	<	kl_stats = malloc(size);
588	>	kl_stats = sg_malloc(size);
589		if(kl_stats == NULL) {
590		return NULL;
591		}
592
593		if(sysctl(mib, 5, kl_stats, &size, NULL, 0) < 0) {
594	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.buffersize");
595		return NULL;
596		}
597		}
#	Line 532 | Line 633 | sg_process_stats *sg_get_process_stats(int *entries){
633		proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
634		break;
635		}
636	+
637	+	free(kl_stats);
638		#else
639		#ifdef FREEBSD5
640		switch (kp_stats[i].ki_stat) {
#	Line 574 | Line 677 | sg_process_stats *sg_get_process_stats(int *entries){
677		free(kp_stats);
678		#endif
679
680	+	#ifdef HPUX
681	+	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
682	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
683	+	return NULL;
684	+	}
685	+
686	+	for (procidx = 0; procidx < 65536; procidx++) {
687	+	if (pstat_getproc(&pstat_procinfo, sizeof(pstat_procinfo), 1, procidx) == -1) {
688	+	break;
689	+	}
690	+	if (pstat_procinfo.pst_idx != procidx) {
691	+	continue;
692	+	}
693	+
694	+	if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
695	+	return NULL;
696	+	}
697	+	proc_state_ptr = proc_state+proc_state_size;
698	+
699	+	proc_state_ptr->pid = pstat_procinfo.pst_pid;
700	+	proc_state_ptr->parent = pstat_procinfo.pst_ppid;
701	+	proc_state_ptr->pgid = pstat_procinfo.pst_pgrp;
702	+	proc_state_ptr->uid = pstat_procinfo.pst_uid;
703	+	proc_state_ptr->euid = pstat_procinfo.pst_euid;
704	+	proc_state_ptr->gid = pstat_procinfo.pst_gid;
705	+	proc_state_ptr->egid = pstat_procinfo.pst_egid;
706	+	proc_state_ptr->proc_size = (pstat_procinfo.pst_dsize + pstat_procinfo.pst_tsize + pstat_procinfo.pst_ssize) * pagesize;
707	+	proc_state_ptr->proc_resident = pstat_procinfo.pst_rssize * pagesize;
708	+	proc_state_ptr->time_spent = pstat_procinfo.pst_time;
709	+	proc_state_ptr->cpu_percent = (pstat_procinfo.pst_pctcpu * 100.0) / 0x8000;
710	+	proc_state_ptr->nice = pstat_procinfo.pst_nice;
711	+
712	+	if (sg_update_string(&proc_state_ptr->process_name,
713	+	pstat_procinfo.pst_ucomm) < 0) {
714	+	return NULL;
715	+	}
716	+	if (sg_update_string(&proc_state_ptr->proctitle,
717	+	pstat_procinfo.pst_cmd) < 0) {
718	+	return NULL;
719	+	}
720	+
721	+	switch (pstat_procinfo.pst_stat) {
722	+	case PS_SLEEP:
723	+	proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
724	+	break;
725	+	case PS_RUN:
726	+	proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
727	+	break;
728	+	case PS_STOP:
729	+	proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
730	+	break;
731	+	case PS_ZOMBIE:
732	+	proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
733	+	break;
734	+	case PS_IDLE:
735	+	case PS_OTHER:
736	+	proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
737	+	break;
738	+	}
739	+
740	+	proc_state_size++;
741	+	}
742	+
743	+	#endif
744	+
745		#ifdef CYGWIN
746	+	sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
747		return NULL;
748		#endif
749
#	Line 624 | Line 793 | sg_process_count *sg_get_process_count() {
793
794		return &process_stat;
795		}
796	+
797	+	int sg_process_compare_name(const void *va, const void *vb) {
798	+	const sg_process_stats *a = (sg_process_stats *)va;
799	+	const sg_process_stats *b = (sg_process_stats *)vb;
800	+
801	+	return strcmp(a->process_name, b->process_name);
802	+	}
803	+
804	+	int sg_process_compare_pid(const void *va, const void *vb) {
805	+	const sg_process_stats *a = (sg_process_stats *)va;
806	+	const sg_process_stats *b = (sg_process_stats *)vb;
807	+
808	+	if (a->pid < b->pid) {
809	+	return -1;
810	+	} else if (a->pid == b->pid) {
811	+	return 0;
812	+	} else {
813	+	return 1;
814	+	}
815	+	}
816	+
817	+	int sg_process_compare_uid(const void *va, const void *vb) {
818	+	const sg_process_stats *a = (sg_process_stats *)va;
819	+	const sg_process_stats *b = (sg_process_stats *)vb;
820	+
821	+	if (a->uid < b->uid) {
822	+	return -1;
823	+	} else if (a->uid == b->uid) {
824	+	return 0;
825	+	} else {
826	+	return 1;
827	+	}
828	+	}
829	+
830	+	int sg_process_compare_gid(const void *va, const void *vb) {
831	+	const sg_process_stats *a = (sg_process_stats *)va;
832	+	const sg_process_stats *b = (sg_process_stats *)vb;
833	+
834	+	if (a->gid < b->gid) {
835	+	return -1;
836	+	} else if (a->gid == b->gid) {
837	+	return 0;
838	+	} else {
839	+	return 1;
840	+	}
841	+	}
842	+
843	+	int sg_process_compare_size(const void *va, const void *vb) {
844	+	const sg_process_stats *a = (sg_process_stats *)va;
845	+	const sg_process_stats *b = (sg_process_stats *)vb;
846	+
847	+	if (a->proc_size < b->proc_size) {
848	+	return -1;
849	+	} else if (a->proc_size == b->proc_size) {
850	+	return 0;
851	+	} else {
852	+	return 1;
853	+	}
854	+	}
855	+
856	+	int sg_process_compare_res(const void *va, const void *vb) {
857	+	const sg_process_stats *a = (sg_process_stats *)va;
858	+	const sg_process_stats *b = (sg_process_stats *)vb;
859	+
860	+	if (a->proc_resident < b->proc_resident) {
861	+	return -1;
862	+	} else if (a->proc_resident == b->proc_resident) {
863	+	return 0;
864	+	} else {
865	+	return 1;
866	+	}
867	+	}
868	+
869	+	int sg_process_compare_cpu(const void *va, const void *vb) {
870	+	const sg_process_stats *a = (sg_process_stats *)va;
871	+	const sg_process_stats *b = (sg_process_stats *)vb;
872	+
873	+	if (a->cpu_percent < b->cpu_percent) {
874	+	return -1;
875	+	} else if (a->cpu_percent == b->cpu_percent) {
876	+	return 0;
877	+	} else {
878	+	return 1;
879	+	}
880	+	}
881	+
882	+	int sg_process_compare_time(const void *va, const void *vb) {
883	+	const sg_process_stats *a = (sg_process_stats *)va;
884	+	const sg_process_stats *b = (sg_process_stats *)vb;
885	+
886	+	if (a->time_spent < b->time_spent) {
887	+	return -1;
888	+	} else if (a->time_spent == b->time_spent) {
889	+	return 0;
890	+	} else {
891	+	return 1;
892	+	}
893	+	}
894	+

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