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 1.13 2004/02/13 16:46:21 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 <sys/time.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:	1.14
Committed:	Sat Feb 14 00:04:12 2004 UTC (20 years, 3 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.13:	+2 -1 lines
Log Message:	uvm.h needs sys/time.h on NetBSD to get struct timeval.
#	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	ats	1.14	* $Id: swap_stats.c,v 1.13 2004/02/13 16:46:21 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	ats	1.14	#include <sys/time.h>
47	tdb	1.12	#include <uvm/uvm.h>
48			#endif
49	pajs	1.1
50			swap_stat_t *get_swap_stats(){
51
52			static swap_stat_t swap_stat;
53
54	pajs	1.3	#ifdef SOLARIS
55	pajs	1.1	struct anoninfo ai;
56			int pagesize;
57	pajs	1.3	#endif
58	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
59	pajs	1.3	FILE *f;
60			char *line_ptr;
61	ats	1.8	unsigned long long value;
62	pajs	1.3	#endif
63	pajs	1.4	#ifdef FREEBSD
64			struct kvm_swap swapinfo;
65			int pagesize;
66	ats	1.6	kvm_t *kvmd;
67	pajs	1.4	#endif
68	tdb	1.12	#if defined(NETBSD) \|\| defined(OPENBSD)
69	ats	1.7	struct uvmexp *uvm;
70			#endif
71	pajs	1.1
72	pajs	1.3	#ifdef SOLARIS
73	pajs	1.1	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
74			return NULL;
75			}
76			if (swapctl(SC_AINFO, &ai) == -1) {
77			return NULL;
78			}
79			swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
80			swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
81			swap_stat.free = swap_stat.total - swap_stat.used;
82	pajs	1.3	#endif
83	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
84	ats	1.8	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
85	pajs	1.3	return NULL;
86			}
87	ats	1.8
88			while ((line_ptr = f_read_line(f, "")) != NULL) {
89			if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
90			continue;
91			}
92			value *= 1024;
93
94			if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
95			swap_stat.total = value;
96			} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
97			swap_stat.free = value;
98			}
99	pajs	1.3	}
100	ats	1.8
101	pajs	1.3	fclose(f);
102	ats	1.8	swap_stat.used = swap_stat.total - swap_stat.free;
103	pajs	1.3	#endif
104	pajs	1.4	#ifdef FREEBSD
105	ats	1.6	if((kvmd = get_kvm()) == NULL){
106	pajs	1.4	return NULL;
107			}
108			if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
109			return NULL;
110			}
111			pagesize=getpagesize();
112	pajs	1.1
113	pajs	1.4	swap_stat.total= (long long)swapinfo.ksw_total * (long long)pagesize;
114			swap_stat.used = (long long)swapinfo.ksw_used * (long long)pagesize;
115			swap_stat.free = swap_stat.total-swap_stat.used;
116	ats	1.7	#endif
117	tdb	1.13	#if defined(NETBSD) \|\| defined(OPENBSD)
118	ats	1.7	if ((uvm = get_uvmexp()) == NULL) {
119			return NULL;
120			}
121
122			swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
123			swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
124			swap_stat.free = swap_stat.total - swap_stat.used;
125	tdb	1.12	#endif
126
127	pajs	1.1	return &swap_stat;
128
129			}