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 1.11 2004/01/19 16:49:21 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
#ifdef OPENBSD
#include <stdlib.h>
#include <sys/param.h>
#include <sys/sysctl.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 OPENBSD
        int mib[2];
        size_t size;
#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;
        }
#endif
#ifdef OPENBSD
        mib[0] = CTL_VM;
        mib[1] = VM_UVMEXP;

        if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
                return NULL;
        }

        uvm = malloc(size);
        if (uvm == NULL) {
                return NULL;
        }

        if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
                return NULL;
        }
#endif

#if defined(NETBSD) || defined(OPENBSD)
        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

#ifdef OPENBSD
        free(uvm);
#endif

        return &swap_stat;

}
Revision:	1.12
Committed:	Thu Feb 12 23:04:52 2004 UTC (20 years, 3 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+36 -2 lines
Log Message:	Add preliminary support for OpenBSD (tested on 3.3). All works apart from Disk IO stats - currently the disks are not named correctly. The fix for this is probably to use KVM. Mostly similar to the NetBSD code, the notable exception being the uvm stuff. In NetBSD there's a function to get it, in OpenBSD sysctl is needed to get hold of it.
#	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	1.12	* $Id: swap_stats.c,v 1.11 2004/01/19 16:49:21 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	1.12	#ifdef OPENBSD
45			#include <stdlib.h>
46			#include <sys/param.h>
47			#include <sys/sysctl.h>
48			#include <uvm/uvm.h>
49			#endif
50	pajs	1.1
51			swap_stat_t *get_swap_stats(){
52
53			static swap_stat_t swap_stat;
54
55	pajs	1.3	#ifdef SOLARIS
56	pajs	1.1	struct anoninfo ai;
57			int pagesize;
58	pajs	1.3	#endif
59	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
60	pajs	1.3	FILE *f;
61			char *line_ptr;
62	ats	1.8	unsigned long long value;
63	pajs	1.3	#endif
64	pajs	1.4	#ifdef FREEBSD
65			struct kvm_swap swapinfo;
66			int pagesize;
67	ats	1.6	kvm_t *kvmd;
68	pajs	1.4	#endif
69	tdb	1.12	#if defined(NETBSD) \|\| defined(OPENBSD)
70	ats	1.7	struct uvmexp *uvm;
71			#endif
72	tdb	1.12	#ifdef OPENBSD
73			int mib[2];
74			size_t size;
75			#endif
76	pajs	1.1
77	pajs	1.3	#ifdef SOLARIS
78	pajs	1.1	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
79			return NULL;
80			}
81			if (swapctl(SC_AINFO, &ai) == -1) {
82			return NULL;
83			}
84			swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
85			swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
86			swap_stat.free = swap_stat.total - swap_stat.used;
87	pajs	1.3	#endif
88	ats	1.9	#if defined(LINUX) \|\| defined(CYGWIN)
89	ats	1.8	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
90	pajs	1.3	return NULL;
91			}
92	ats	1.8
93			while ((line_ptr = f_read_line(f, "")) != NULL) {
94			if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
95			continue;
96			}
97			value *= 1024;
98
99			if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
100			swap_stat.total = value;
101			} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
102			swap_stat.free = value;
103			}
104	pajs	1.3	}
105	ats	1.8
106	pajs	1.3	fclose(f);
107	ats	1.8	swap_stat.used = swap_stat.total - swap_stat.free;
108	pajs	1.3	#endif
109	pajs	1.4	#ifdef FREEBSD
110	ats	1.6	if((kvmd = get_kvm()) == NULL){
111	pajs	1.4	return NULL;
112			}
113			if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
114			return NULL;
115			}
116			pagesize=getpagesize();
117	pajs	1.1
118	pajs	1.4	swap_stat.total= (long long)swapinfo.ksw_total * (long long)pagesize;
119			swap_stat.used = (long long)swapinfo.ksw_used * (long long)pagesize;
120			swap_stat.free = swap_stat.total-swap_stat.used;
121	ats	1.7	#endif
122			#ifdef NETBSD
123			if ((uvm = get_uvmexp()) == NULL) {
124			return NULL;
125			}
126	tdb	1.12	#endif
127			#ifdef OPENBSD
128			mib[0] = CTL_VM;
129			mib[1] = VM_UVMEXP;
130	ats	1.7
131	tdb	1.12	if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
132			return NULL;
133			}
134
135			uvm = malloc(size);
136			if (uvm == NULL) {
137			return NULL;
138			}
139
140			if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
141			return NULL;
142			}
143			#endif
144
145			#if defined(NETBSD) \|\| defined(OPENBSD)
146	ats	1.7	swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
147			swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
148			swap_stat.free = swap_stat.total - swap_stat.used;
149	pajs	1.4	#endif
150	tdb	1.12
151			#ifdef OPENBSD
152			free(uvm);
153			#endif
154
155	pajs	1.1	return &swap_stat;
156
157			}