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

Comparing projects/libstatgrab/src/libstatgrab/page_stats.c (file contents):
Revision 1.1 by pajs, Tue Feb 18 19:28:30 2003 UTC vs.
Revision 1.20 by tdb, Wed Apr 7 14:53:40 2004 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
1	>	/*
2	>	* i-scream libstatgrab
3	>	* http://www.i-scream.org
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
19	>	* 02111-1307 USA
20	>	*
21	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
25		#include "config.h"
26		#endif
27
28	<	#include <stdio.h>
29	<	#include <statgrab.h>
28	>	#include "statgrab.h"
29	>	#include "tools.h"
30	>	#include <time.h>
31		#ifdef SOLARIS
32		#include <kstat.h>
33		#include <sys/sysinfo.h>
34	+	#include <string.h>
35		#endif
36	+	#if defined(LINUX) || defined(CYGWIN)
37	+	#include <stdio.h>
38	+	#include <string.h>
39	+	#endif
40	+	#if defined(FREEBSD) || defined(DFBSD)
41	+	#include <sys/types.h>
42	+	#include <sys/sysctl.h>
43	+	#endif
44	+	#if defined(NETBSD) || defined(OPENBSD)
45	+	#include <sys/param.h>
46	+	#include <uvm/uvm.h>
47	+	#endif
48
49	<	page_stat_t *get_page_stats(){
50	<	static page_stat_t page_stats;
34	<	kstat_ctl_t *kc;
35	<	kstat_t *ksp;
36	<	cpu_stat_t cs;
37	<	uint_t swapin, swapout;
49	>	static sg_page_stats page_stats;
50	>	static int page_stats_uninit=1;
51
52	<	if ((kc = kstat_open()) == NULL) {
53	<	errf("kstat_open failure (%m)");
54	<	return NULL;
55	<	}
56	<	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
57	<	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
58	<	if (kstat_read(kc, ksp, &cs) == -1) {
59	<	continue;
60	<	}
52	>	sg_page_stats *sg_get_page_stats(){
53	>	#ifdef SOLARIS
54	>	kstat_ctl_t *kc;
55	>	kstat_t *ksp;
56	>	cpu_stat_t cs;
57	>	#endif
58	>	#if defined(LINUX) || defined(CYGWIN)
59	>	FILE *f;
60	>	char *line_ptr;
61	>	#endif
62	>	#if defined(FREEBSD) || defined(DFBSD)
63	>	size_t size;
64	>	#endif
65	>	#if defined(NETBSD) || defined(OPENBSD)
66	>	struct uvmexp *uvm;
67	>	#endif
68
69	<	page_stats+=cs.cpu_vminfo.pgswapin;
70	<	page_stats+=cs.cpu_vminfo.pgswapout;
69	>	page_stats.systime = time(NULL);
70	>	page_stats.pages_pagein=0;
71	>	page_stats.pages_pageout=0;
72
73	+	#ifdef SOLARIS
74	+	if ((kc = kstat_open()) == NULL) {
75	+	return NULL;
76	+	}
77	+	for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
78	+	if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
79	+	if (kstat_read(kc, ksp, &cs) == -1) {
80	+	continue;
81	+	}
82	+
83	+	page_stats.pages_pagein+=(long long)cs.cpu_vminfo.pgpgin;
84	+	page_stats.pages_pageout+=(long long)cs.cpu_vminfo.pgpgout;
85	+	}
86	+
87	+	kstat_close(kc);
88	+	#endif
89	+	#if defined(LINUX) || defined(CYGWIN)
90	+	if ((f = fopen("/proc/vmstat", "r")) != NULL) {
91	+	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
92	+	long long value;
93	+
94	+	if (sscanf(line_ptr, "%*s %lld", &value) != 1) {
95	+	continue;
96	+	}
97	+
98	+	if (strncmp(line_ptr, "pgpgin ", 7) == 0) {
99	+	page_stats.pages_pagein = value;
100	+	} else if (strncmp(line_ptr, "pgpgout ", 8) == 0) {
101	+	page_stats.pages_pageout = value;
102	+	}
103	+	}
104	+
105	+	fclose(f);
106	+	} else if ((f = fopen("/proc/stat", "r")) != NULL) {
107	+	if ((line_ptr = sg_f_read_line(f, "page")) == NULL) {
108	+	fclose(f);
109	+	return NULL;
110	+	}
111	+
112	+	if (sscanf(line_ptr, "page %lld %lld", &page_stats.pages_pagein, &page_stats.pages_pageout) != 2) {
113	+	fclose(f);
114	+	return NULL;
115	+	}
116	+
117	+	fclose(f);
118	+	} else {
119	+	return NULL;
120	+	}
121	+	#endif
122	+	#if defined(FREEBSD) || defined(DFBSD)
123	+	size = sizeof page_stats.pages_pagein;
124	+	if (sysctlbyname("vm.stats.vm.v_swappgsin", &page_stats.pages_pagein, &size, NULL, 0) < 0){
125	+	return NULL;
126	+	}
127	+	size = sizeof page_stats.pages_pageout;
128	+	if (sysctlbyname("vm.stats.vm.v_swappgsout", &page_stats.pages_pageout, &size, NULL, 0) < 0){
129	+	return NULL;
130	+	}
131	+	#endif
132	+	#if defined(NETBSD) || defined(OPENBSD)
133	+	if ((uvm = sg_get_uvmexp()) == NULL) {
134	+	return NULL;
135	+	}
136	+
137	+	page_stats.pages_pagein = uvm->pgswapin;
138	+	page_stats.pages_pageout = uvm->pgswapout;
139	+	#endif
140	+
141	+	return &page_stats;
142	+	}
143	+
144	+	sg_page_stats *sg_get_page_stats_diff(){
145	+	sg_page_stats *page_ptr;
146	+	static sg_page_stats page_stats_diff;
147	+
148	+	if(page_stats_uninit){
149	+	page_ptr=sg_get_page_stats();
150	+	if(page_ptr==NULL){
151	+	return NULL;
152	+	}
153	+	page_stats_uninit=0;
154	+	return page_ptr;
155	+	}
156	+
157	+	page_stats_diff.pages_pagein=page_stats.pages_pagein;
158	+	page_stats_diff.pages_pageout=page_stats.pages_pageout;
159	+	page_stats_diff.systime=page_stats.systime;
160	+
161	+	page_ptr=sg_get_page_stats();
162	+	if(page_ptr==NULL){
163	+	return NULL;
164	+	}
165	+
166	+	page_stats_diff.pages_pagein=page_stats.pages_pagein-page_stats_diff.pages_pagein;
167	+	page_stats_diff.pages_pageout=page_stats.pages_pageout-page_stats_diff.pages_pageout;
168	+	page_stats_diff.systime=page_stats.systime-page_stats_diff.systime;
169	+
170	+	return &page_stats_diff;
171		}

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