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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 1.10 by ats, Fri Oct 24 17:26:43 2003 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
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2003 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
#	Line 22 | Line 22
22		#include "config.h"
23		#endif
24
25	<	#include <stdio.h>
26	<	#include <statgrab.h>
25	>	#include "statgrab.h"
26	>	#include "tools.h"
27	>	#include <time.h>
28		#ifdef SOLARIS
29		#include <kstat.h>
30		#include <sys/sysinfo.h>
31	+	#include <string.h>
32		#endif
33	+	#ifdef LINUX
34	+	#include <stdio.h>
35	+	#include <string.h>
36	+	#endif
37	+	#ifdef FREEBSD
38	+	#include <sys/types.h>
39	+	#include <sys/sysctl.h>
40	+	#endif
41
42	+	static page_stat_t page_stats;
43	+	static int page_stats_uninit=1;
44	+
45		page_stat_t *get_page_stats(){
46	<	static page_stat_t page_stats;
46	>	#ifdef SOLARIS
47		kstat_ctl_t *kc;
48		kstat_t *ksp;
49		cpu_stat_t cs;
50	<	uint_t swapin, swapout;
50	>	#endif
51	>	#ifdef LINUX
52	>	FILE *f;
53	>	char *line_ptr;
54	>	#endif
55	>	#ifdef FREEBSD
56	>	size_t size;
57	>	#endif
58	>	#ifdef NETBSD
59	>	struct uvmexp *uvm;
60	>	#endif
61
62	+	page_stats.systime = time(NULL);
63	+	page_stats.pages_pagein=0;
64	+	page_stats.pages_pageout=0;
65	+
66	+	#ifdef SOLARIS
67		if ((kc = kstat_open()) == NULL) {
40	–	errf("kstat_open failure (%m)");
68		return NULL;
69		}
70		for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
#	Line 46 | Line 73 | page_stat_t *get_page_stats(){
73		continue;
74		}
75
76	<	page_stats+=cs.cpu_vminfo.pgswapin;
77	<	page_stats+=cs.cpu_vminfo.pgswapout;
76	>	page_stats.pages_pagein+=(long long)cs.cpu_vminfo.pgpgin;
77	>	page_stats.pages_pageout+=(long long)cs.cpu_vminfo.pgpgout;
78	>	}
79
80	+	kstat_close(kc);
81	+	#endif
82	+	#ifdef LINUX
83	+	if ((f = fopen("/proc/vmstat", "r")) != NULL) {
84	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
85	+	long long value;
86	+
87	+	if (sscanf(line_ptr, "%*s %lld", &value) != 1) {
88	+	continue;
89	+	}
90	+
91	+	if (strncmp(line_ptr, "pgpgin ", 7) == 0) {
92	+	page_stats.pages_pagein = value;
93	+	} else if (strncmp(line_ptr, "pgpgout ", 8) == 0) {
94	+	page_stats.pages_pageout = value;
95	+	}
96	+	}
97	+
98	+	fclose(f);
99	+	} else if ((f = fopen("/proc/stat", "r")) != NULL) {
100	+	if ((line_ptr = f_read_line(f, "page")) == NULL) {
101	+	fclose(f);
102	+	return NULL;
103	+	}
104	+
105	+	if (sscanf(line_ptr, "page %lld %lld", &page_stats.pages_pagein, &page_stats.pages_pageout) != 2) {
106	+	return NULL;
107	+	}
108	+
109	+	fclose(f);
110	+	} else {
111	+	return NULL;
112	+	}
113	+	#endif
114	+	#ifdef FREEBSD
115	+	size = sizeof page_stats.pages_pagein;
116	+	if (sysctlbyname("vm.stats.vm.v_swappgsin", &page_stats.pages_pagein, &size, NULL, 0) < 0){
117	+	return NULL;
118	+	}
119	+	size = sizeof page_stats.pages_pageout;
120	+	if (sysctlbyname("vm.stats.vm.v_swappgsout", &page_stats.pages_pageout, &size, NULL, 0) < 0){
121	+	return NULL;
122	+	}
123	+	#endif
124	+	#ifdef NETBSD
125	+	if ((uvm = get_uvmexp()) == NULL) {
126	+	return NULL;
127	+	}
128	+	page_stats.pages_pagein = uvm->pgswapin;
129	+	page_stats.pages_pageout = uvm->pgswapout;
130	+	#endif
131	+
132	+	return &page_stats;
133	+	}
134	+
135	+	page_stat_t *get_page_stats_diff(){
136	+	page_stat_t *page_ptr;
137	+	static page_stat_t page_stats_diff;
138	+
139	+	if(page_stats_uninit){
140	+	page_ptr=get_page_stats();
141	+	if(page_ptr==NULL){
142	+	return NULL;
143	+	}
144	+	page_stats_uninit=0;
145	+	return page_ptr;
146	+	}
147	+
148	+	page_stats_diff.pages_pagein=page_stats.pages_pagein;
149	+	page_stats_diff.pages_pageout=page_stats.pages_pageout;
150	+	page_stats_diff.systime=page_stats.systime;
151	+
152	+	page_ptr=get_page_stats();
153	+	if(page_ptr==NULL){
154	+	return NULL;
155	+	}
156	+
157	+	page_stats_diff.pages_pagein=page_stats.pages_pagein-page_stats_diff.pages_pagein;
158	+	page_stats_diff.pages_pageout=page_stats.pages_pageout-page_stats_diff.pages_pageout;
159	+	page_stats_diff.systime=page_stats.systime-page_stats_diff.systime;
160	+
161	+	return &page_stats_diff;
162		}

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