src/libstatgrab/swap_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: swap_stats.c,v 1.12 2004/02/12 23:04:52 tdb Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "statgrab.h"
#include "tools.h"
#ifdef SOLARIS
#include <sys/stat.h>
#include <sys/swap.h>
#include <unistd.h>
#endif
#if defined(LINUX) || defined(CYGWIN)
#include <stdio.h>
#include <string.h>
#endif
#ifdef FREEBSD
#include <unistd.h>
#include <sys/types.h>
#include <kvm.h>
#endif
#if defined(NETBSD) || defined(OPENBSD)
#include <sys/param.h>
#include <uvm/uvm.h>
#endif

swap_stat_t *get_swap_stats(){

        static swap_stat_t swap_stat;

#ifdef SOLARIS
        struct anoninfo ai;
        int pagesize;
#endif
#if defined(LINUX) || defined(CYGWIN)
        FILE *f;
        char *line_ptr;
        unsigned long long value;
#endif
#ifdef FREEBSD
        struct kvm_swap swapinfo;
        int pagesize;
        kvm_t *kvmd;
#endif
#if defined(NETBSD) || defined(OPENBSD)
        struct uvmexp *uvm;
#endif

#ifdef SOLARIS
        if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
                return NULL;
        }
        if (swapctl(SC_AINFO, &ai) == -1) {
                return NULL;
        }
        swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
        swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
        swap_stat.free = swap_stat.total - swap_stat.used;
#endif
#if defined(LINUX) || defined(CYGWIN)
        if ((f = fopen("/proc/meminfo", "r")) == NULL) {
                return NULL;
        }

        while ((line_ptr = f_read_line(f, "")) != NULL) {
                if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
                        continue;
                }
                value *= 1024;

                if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
                        swap_stat.total = value;
                } else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
                        swap_stat.free = value;
                }
        }

        fclose(f);
        swap_stat.used = swap_stat.total - swap_stat.free;
#endif
#ifdef FREEBSD
        if((kvmd = get_kvm()) == NULL){
                return NULL;
        }
        if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
                return NULL;
        }
        pagesize=getpagesize();

        swap_stat.total= (long long)swapinfo.ksw_total * (long long)pagesize;
        swap_stat.used = (long long)swapinfo.ksw_used * (long long)pagesize;
        swap_stat.free = swap_stat.total-swap_stat.used;
#endif
#if defined(NETBSD) || defined(OPENBSD)
        if ((uvm = get_uvmexp()) == NULL) {
                return NULL;
        }

        swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
        swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
        swap_stat.free = swap_stat.total - swap_stat.used;
#endif

        return &swap_stat;

}
Revision:	1.13
Committed:	Fri Feb 13 16:46:21 2004 UTC (20 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+3 -32 lines
Log Message:	Finish support for OpenBSD. Get disknames out of sysctl as well for Disk IO. Fix memory/page/swap stats to use get_uvmexp in tools.c (same as NetBSD).
#	User	Rev	Content
1	tdb	1.10	/*
2	pajs	1.1	* i-scream central monitoring system
3	tdb	1.5	* http://www.i-scream.org
4	tdb	1.10	* Copyright (C) 2000-2004 i-scream
5	pajs	1.1	*
6	tdb	1.10	* 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	pajs	1.1	*
11	tdb	1.10	* This library is distributed in the hope that it will be useful,
12	pajs	1.1	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	tdb	1.10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15	pajs	1.1	*
16	tdb	1.10	* 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	tdb	1.11	*
21	tdb	1.13	* $Id: swap_stats.c,v 1.12 2004/02/12 23:04:52 tdb Exp $
22	pajs	1.1	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28			#include "statgrab.h"
29	ats	1.6	#include "tools.h"
30	pajs	1.1	#ifdef SOLARIS
31			#include <sys/stat.h>
32			#include <sys/swap.h>
33			#include <unistd.h>
34			#endif
35	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
36	pajs	1.3	#include <stdio.h>
37	ats	1.8	#include <string.h>
38	pajs	1.3	#endif
39	pajs	1.4	#ifdef FREEBSD
40			#include <unistd.h>
41			#include <sys/types.h>
42			#include <kvm.h>
43			#endif
44	tdb	1.13	#if defined(NETBSD) \|\| defined(OPENBSD)
45	tdb	1.12	#include <sys/param.h>
46			#include <uvm/uvm.h>
47			#endif
48	pajs	1.1
49			swap_stat_t *get_swap_stats(){
50
51			static swap_stat_t swap_stat;
52
53	pajs	1.3	#ifdef SOLARIS
54	pajs	1.1	struct anoninfo ai;
55			int pagesize;
56	pajs	1.3	#endif
57	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
58	pajs	1.3	FILE *f;
59			char *line_ptr;
60	ats	1.8	unsigned long long value;
61	pajs	1.3	#endif
62	pajs	1.4	#ifdef FREEBSD
63			struct kvm_swap swapinfo;
64			int pagesize;
65	ats	1.6	kvm_t *kvmd;
66	pajs	1.4	#endif
67	tdb	1.12	#if defined(NETBSD) \|\| defined(OPENBSD)
68	ats	1.7	struct uvmexp *uvm;
69			#endif
70	pajs	1.1
71	pajs	1.3	#ifdef SOLARIS
72	pajs	1.1	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
73			return NULL;
74			}
75			if (swapctl(SC_AINFO, &ai) == -1) {
76			return NULL;
77			}
78			swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
79			swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
80			swap_stat.free = swap_stat.total - swap_stat.used;
81	pajs	1.3	#endif
82	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
83	ats	1.8	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
84	pajs	1.3	return NULL;
85			}
86	ats	1.8
87			while ((line_ptr = f_read_line(f, "")) != NULL) {
88			if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
89			continue;
90			}
91			value *= 1024;
92
93			if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
94			swap_stat.total = value;
95			} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
96			swap_stat.free = value;
97			}
98	pajs	1.3	}
99	ats	1.8
100	pajs	1.3	fclose(f);
101	ats	1.8	swap_stat.used = swap_stat.total - swap_stat.free;
102	pajs	1.3	#endif
103	pajs	1.4	#ifdef FREEBSD
104	ats	1.6	if((kvmd = get_kvm()) == NULL){
105	pajs	1.4	return NULL;
106			}
107			if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
108			return NULL;
109			}
110			pagesize=getpagesize();
111	pajs	1.1
112	pajs	1.4	swap_stat.total= (long long)swapinfo.ksw_total * (long long)pagesize;
113			swap_stat.used = (long long)swapinfo.ksw_used * (long long)pagesize;
114			swap_stat.free = swap_stat.total-swap_stat.used;
115	ats	1.7	#endif
116	tdb	1.13	#if defined(NETBSD) \|\| defined(OPENBSD)
117	ats	1.7	if ((uvm = get_uvmexp()) == NULL) {
118			return NULL;
119			}
120
121			swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
122			swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
123			swap_stat.free = swap_stat.total - swap_stat.used;
124	tdb	1.12	#endif
125
126	pajs	1.1	return &swap_stat;
127
128			}