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root/i-scream/projects/libstatgrab/src/libstatgrab/cpu_stats.c

Comparing projects/libstatgrab/src/libstatgrab/cpu_stats.c (file contents):
Revision 1.12 by ats, Sat Oct 18 23:04:23 2003 UTC vs.
Revision 1.22 by tdb, Wed Apr 7 14:45:40 2004 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
1	>	/*
2	>	* i-scream libstatgrab
3		* http://www.i-scream.org
4	<	* Copyright (C) 2000-2003 i-scream
4	>	* Copyright (C) 2000-2004 i-scream
5		*
6	<	* This program is free software; you can redistribute it and/or
7	<	* modify it under the terms of the GNU General Public License
8	<	* as published by the Free Software Foundation; either version 2
9	<	* of the License, or (at your option) any later version.
6	>	* This library is free software; you can redistribute it and/or
7	>	* modify it under the terms of the GNU Lesser General Public
8	>	* License as published by the Free Software Foundation; either
9	>	* version 2.1 of the License, or (at your option) any later version.
10		*
11	<	* This program is distributed in the hope that it will be useful,
11	>	* This library is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	<	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	<	* GNU General Public License for more details.
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	>	* Lesser General Public License for more details.
15		*
16	<	* You should have received a copy of the GNU General Public License
17	<	* along with this program; if not, write to the Free Software
18	<	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
16	>	* You should have received a copy of the GNU Lesser General Public
17	>	* License along with this library; if not, write to the Free Software
18	>	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19	>	*
20	>	* $Id$
21		*/
22
23		#ifdef HAVE_CONFIG_H
#	Line 24 | Line 26
26
27		#include <time.h>
28		#include "statgrab.h"
29	+	#include "tools.h"
30		#ifdef SOLARIS
31		#include <kstat.h>
32		#include <sys/sysinfo.h>
33		#include <string.h>
34		#endif
35	<	#ifdef LINUX
35	>	#if defined(LINUX) || defined(CYGWIN)
36		#include <stdio.h>
37		#endif
38	<	#ifdef FREEBSD
38	>	#if defined(FREEBSD) || defined(DFBSD)
39		#include <sys/sysctl.h>
40		#include <sys/dkstat.h>
41		#endif
42	+	#ifdef NETBSD
43	+	#include <sys/types.h>
44	+	#include <sys/param.h>
45	+	#include <sys/sysctl.h>
46	+	#include <sys/sched.h>
47	+	#endif
48	+	#ifdef OPENBSD
49	+	#include <sys/param.h>
50	+	#include <sys/sysctl.h>
51	+	#include <sys/dkstat.h>
52	+	#endif
53
54	<	static cpu_states_t cpu_now;
54	>	static sg_cpu_stats cpu_now;
55		static int cpu_now_uninit=1;
56
57	<	cpu_states_t *get_cpu_totals(){
57	>	sg_cpu_stats *sg_get_cpu_stats(){
58
59		#ifdef SOLARIS
60	<	kstat_ctl_t *kc;
61	<	kstat_t *ksp;
60	>	kstat_ctl_t *kc;
61	>	kstat_t *ksp;
62		cpu_stat_t cs;
63		#endif
64	<	#ifdef LINUX
64	>	#if defined(LINUX) || defined(CYGWIN)
65		FILE *f;
66		#endif
67	<	#ifdef FREEBSD
67	>	#ifdef ALLBSD
68	>	#if defined(NETBSD) || defined(OPENBSD)
69	>	int mib[2];
70	>	#endif
71	>	#ifdef NETBSD
72	>	u_int64_t cp_time[CPUSTATES];
73	>	#else
74		long cp_time[CPUSTATES];
75	+	#endif
76		size_t size;
77		#endif
78	<
78	>
79		cpu_now.user=0;
80		/* Not stored in linux or freebsd */
81		cpu_now.iowait=0;
#	Line 67 | Line 88 | cpu_states_t *get_cpu_totals(){
88		cpu_now.nice=0;
89
90		#ifdef SOLARIS
91	<	if ((kc = kstat_open()) == NULL) {
92	<	return NULL;
93	<	}
94	<	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
95	<	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
96	<	if (kstat_read(kc, ksp, &cs) == -1) {
97	<	continue;
98	<	}
91	>	if ((kc = kstat_open()) == NULL) {
92	>	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
93	>	return NULL;
94	>	}
95	>	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
96	>	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
97	>	if (kstat_read(kc, ksp, &cs) == -1) {
98	>	continue;
99	>	}
100		cpu_now.user+=(long long)cs.cpu_sysinfo.cpu[CPU_USER];
101		cpu_now.iowait+=(long long)cs.cpu_sysinfo.cpu[CPU_WAIT];
102		cpu_now.kernel+=(long long)cs.cpu_sysinfo.cpu[CPU_KERNEL];
#	Line 84 | Line 106 | cpu_states_t *get_cpu_totals(){
106
107		cpu_now.total=cpu_now.user+cpu_now.iowait+cpu_now.kernel+cpu_now.idle+cpu_now.swap;
108
109	<	kstat_close(kc);
109	>	kstat_close(kc);
110		#endif
111	<	#ifdef LINUX
111	>	#if defined(LINUX) || defined(CYGWIN)
112		if ((f=fopen("/proc/stat", "r" ))==NULL) {
113	+	sg_set_error(SG_ERROR_OPEN, "/proc/stat");
114		return NULL;
115		}
116		/* The very first line should be cpu */
#	Line 96 | Line 119 | cpu_states_t *get_cpu_totals(){
119		&cpu_now.nice, \
120		&cpu_now.kernel, \
121		&cpu_now.idle)) != 4){
122	+	sg_set_error(SG_ERROR_PARSE, "cpu");
123		fclose(f);
124		return NULL;
125		}
#	Line 104 | Line 128 | cpu_states_t *get_cpu_totals(){
128
129		cpu_now.total=cpu_now.user+cpu_now.nice+cpu_now.kernel+cpu_now.idle;
130		#endif
131	<	#ifdef FREEBSD
131	>	#ifdef ALLBSD
132	>	#if defined(FREEBSD) || defined(DFBSD)
133		size = sizeof cp_time;
134		if (sysctlbyname("kern.cp_time", &cp_time, &size, NULL, 0) < 0){
135	+	sg_set_error(SG_ERROR_SYSCTLBYNAME, "kern.cp_time");
136		return NULL;
137		}
138	+	#else
139	+	mib[0] = CTL_KERN;
140	+	#ifdef NETBSD
141	+	mib[1] = KERN_CP_TIME;
142	+	#else
143	+	mib[1] = KERN_CPTIME;
144	+	#endif
145	+	size = sizeof cp_time;
146	+	if (sysctl(mib, 2, &cp_time, &size, NULL, 0) < 0) {
147	+	#ifdef NETBSD
148	+	sg_set_error(SG_ERROR_SYSCTL, "CTL_KERN.KERN_CP_TIME");
149	+	#else
150	+	sg_set_error(SG_ERROR_SYSCTL, "CTL_KERN.KERN_CPTIME");
151	+	#endif
152	+	return NULL;
153	+	}
154	+	#endif
155
156		cpu_now.user=cp_time[CP_USER];
157		cpu_now.nice=cp_time[CP_NICE];
#	Line 126 | Line 169 | cpu_states_t *get_cpu_totals(){
169		return &cpu_now;
170		}
171
172	<	cpu_states_t *get_cpu_diff(){
173	<	static cpu_states_t cpu_diff;
174	<	cpu_states_t cpu_then, *cpu_tmp;
172	>	sg_cpu_stats *sg_get_cpu_stats_diff(){
173	>	static sg_cpu_stats cpu_diff;
174	>	sg_cpu_stats cpu_then, *cpu_tmp;
175
176		if (cpu_now_uninit){
177	<	if((cpu_tmp=get_cpu_totals())==NULL){
178	<	/* Should get_cpu_totals fail */
177	>	if((cpu_tmp=sg_get_cpu_stats())==NULL){
178	>	/* Should sg_get_cpu_stats fail */
179		return NULL;
180		}
181		return cpu_tmp;
182		}
183
184
185	<	cpu_then.user=cpu_now.user;
186	<	cpu_then.kernel=cpu_now.kernel;
187	<	cpu_then.idle=cpu_now.idle;
188	<	cpu_then.iowait=cpu_now.iowait;
189	<	cpu_then.swap=cpu_now.swap;
190	<	cpu_then.nice=cpu_now.nice;
191	<	cpu_then.total=cpu_now.total;
192	<	cpu_then.systime=cpu_now.systime;
185	>	cpu_then.user=cpu_now.user;
186	>	cpu_then.kernel=cpu_now.kernel;
187	>	cpu_then.idle=cpu_now.idle;
188	>	cpu_then.iowait=cpu_now.iowait;
189	>	cpu_then.swap=cpu_now.swap;
190	>	cpu_then.nice=cpu_now.nice;
191	>	cpu_then.total=cpu_now.total;
192	>	cpu_then.systime=cpu_now.systime;
193
194	<	if((cpu_tmp=get_cpu_totals())==NULL){
194	>	if((cpu_tmp=sg_get_cpu_stats())==NULL){
195		return NULL;
196		}
197
#	Line 164 | Line 207 | cpu_states_t *get_cpu_diff(){
207		return &cpu_diff;
208		}
209
210	<	cpu_percent_t *cpu_percent_usage(){
211	<	static cpu_percent_t cpu_usage;
212	<	cpu_states_t *cs_ptr;
210	>	sg_cpu_percents *sg_get_cpu_percents(){
211	>	static sg_cpu_percents cpu_usage;
212	>	sg_cpu_stats *cs_ptr;
213
214	<	cs_ptr=get_cpu_diff();
214	>	cs_ptr=sg_get_cpu_stats_diff();
215		if(cs_ptr==NULL){
216		return NULL;
217		}

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