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
 */

#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

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
#ifdef NETBSD
        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
#ifdef NETBSD
        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:	1.10
Committed:	Fri Jan 16 15:54:54 2004 UTC (20 years, 4 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+13 -12 lines
Log Message:	Alter the licensing of libstatgrab. The library part is now under the LGPL, whilst the tools/examples are under the GPL. Both licenses are included in the distribution (and are both now in CVS). Also made a minor alteration to the webpage where it said everything was licensed under the GPL.
#	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	pajs	1.1	*/
21
22			#ifdef HAVE_CONFIG_H
23			#include "config.h"
24			#endif
25
26			#include "statgrab.h"
27	ats	1.6	#include "tools.h"
28	pajs	1.1	#ifdef SOLARIS
29			#include <sys/stat.h>
30			#include <sys/swap.h>
31			#include <unistd.h>
32			#endif
33	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
34	pajs	1.3	#include <stdio.h>
35	ats	1.8	#include <string.h>
36	pajs	1.3	#endif
37	pajs	1.4	#ifdef FREEBSD
38			#include <unistd.h>
39			#include <sys/types.h>
40			#include <kvm.h>
41			#endif
42	pajs	1.1
43			swap_stat_t *get_swap_stats(){
44
45			static swap_stat_t swap_stat;
46
47	pajs	1.3	#ifdef SOLARIS
48	pajs	1.1	struct anoninfo ai;
49			int pagesize;
50	pajs	1.3	#endif
51	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
52	pajs	1.3	FILE *f;
53			char *line_ptr;
54	ats	1.8	unsigned long long value;
55	pajs	1.3	#endif
56	pajs	1.4	#ifdef FREEBSD
57			struct kvm_swap swapinfo;
58			int pagesize;
59	ats	1.6	kvm_t *kvmd;
60	pajs	1.4	#endif
61	ats	1.7	#ifdef NETBSD
62			struct uvmexp *uvm;
63			#endif
64	pajs	1.1
65	pajs	1.3	#ifdef SOLARIS
66	pajs	1.1	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
67			return NULL;
68			}
69			if (swapctl(SC_AINFO, &ai) == -1) {
70			return NULL;
71			}
72			swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
73			swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
74			swap_stat.free = swap_stat.total - swap_stat.used;
75	pajs	1.3	#endif
76	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
77	ats	1.8	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
78	pajs	1.3	return NULL;
79			}
80	ats	1.8
81			while ((line_ptr = f_read_line(f, "")) != NULL) {
82			if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
83			continue;
84			}
85			value *= 1024;
86
87			if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
88			swap_stat.total = value;
89			} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
90			swap_stat.free = value;
91			}
92	pajs	1.3	}
93	ats	1.8
94	pajs	1.3	fclose(f);
95	ats	1.8	swap_stat.used = swap_stat.total - swap_stat.free;
96	pajs	1.3	#endif
97	pajs	1.4	#ifdef FREEBSD
98	ats	1.6	if((kvmd = get_kvm()) == NULL){
99	pajs	1.4	return NULL;
100			}
101			if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
102			return NULL;
103			}
104			pagesize=getpagesize();
105	pajs	1.1
106	pajs	1.4	swap_stat.total= (long long)swapinfo.ksw_total * (long long)pagesize;
107			swap_stat.used = (long long)swapinfo.ksw_used * (long long)pagesize;
108			swap_stat.free = swap_stat.total-swap_stat.used;
109	ats	1.7	#endif
110			#ifdef NETBSD
111			if ((uvm = get_uvmexp()) == NULL) {
112			return NULL;
113			}
114
115			swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
116			swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
117			swap_stat.free = swap_stat.total - swap_stat.used;
118	pajs	1.4	#endif
119	pajs	1.1	return &swap_stat;
120
121			}