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root/i-scream/projects/libstatgrab/src/libstatgrab/memory_stats.c

Comparing projects/libstatgrab/src/libstatgrab/memory_stats.c (file contents):
Revision 1.3 by tdb, Thu Feb 20 13:19:52 2003 UTC vs.
Revision 1.21 by tdb, Fri Feb 13 16:46:21 2004 UTC

#	Line 1 | Line 1
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) 2000-2004 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
8	<	* as published by the Free Software Foundation; either version 2
9	<	* of the License, or (at your option) any later version.
6	>	* 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		*
11	<	* This program is distributed in the hope that it will be useful,
11	>	* This library is distributed in the hope that it will be useful,
12		* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	<	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	<	* GNU General Public License for more details.
13	>	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	>	* Lesser General Public License for more details.
15		*
16	<	* You should have received a copy of the GNU General Public License
17	<	* along with this program; if not, write to the Free Software
18	<	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
16	>	* 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	>	*
21	>	* $Id$
22		*/
23
24		#ifdef HAVE_CONFIG_H
25		#include "config.h"
26		#endif
27
25	–	#include <stdio.h>
28		#include "statgrab.h"
29	<	#ifdef LINUX
28	<	#include <string.h>
29	<	#endif
29	>	#include "tools.h"
30		#ifdef SOLARIS
31		#include <unistd.h>
32		#include <kstat.h>
33		#endif
34	+	#if defined(LINUX) || defined(CYGWIN)
35	+	#include <stdio.h>
36	+	#include <string.h>
37	+	#endif
38		#ifdef FREEBSD
39		#include <sys/types.h>
40		#include <sys/sysctl.h>
41		#include <unistd.h>
42		#endif
43	+	#if defined(NETBSD) || defined(OPENBSD)
44	+	#include <sys/param.h>
45	+	#include <uvm/uvm.h>
46	+	#endif
47
48		mem_stat_t *get_memory_stats(){
49
#	Line 48 | Line 56 | mem_stat_t *get_memory_stats(){
56		long totalmem;
57		int pagesize;
58		#endif
59	+	#if defined(LINUX) || defined(CYGWIN)
60	+	char *line_ptr;
61	+	unsigned long long value;
62	+	FILE *f;
63	+	#endif
64	+	#ifdef FREEBSD
65	+	int mib[2];
66	+	u_long physmem;
67	+	size_t size;
68	+	u_int free_count;
69	+	u_int cache_count;
70	+	u_int inactive_count;
71	+	int pagesize;
72	+	#endif
73	+	#if defined(NETBSD) || defined(OPENBSD)
74	+	struct uvmexp *uvm;
75	+	#endif
76
77		#ifdef SOLARIS
78		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
#	Line 77 | Line 102 | mem_stat_t *get_memory_stats(){
102		mem_stat.used = mem_stat.total - mem_stat.free;
103		#endif
104
105	<	return &mem_stat;
105	>	#if defined(LINUX) || defined(CYGWIN)
106	>	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
107	>	return NULL;
108	>	}
109
110	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
111	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
112	+	continue;
113	+	}
114	+	value *= 1024;
115	+
116	+	if (strncmp(line_ptr, "MemTotal:", 9) == 0) {
117	+	mem_stat.total = value;
118	+	} else if (strncmp(line_ptr, "MemFree:", 8) == 0) {
119	+	mem_stat.free = value;
120	+	} else if (strncmp(line_ptr, "Cached:", 7) == 0) {
121	+	mem_stat.cache = value;
122	+	}
123	+	}
124	+
125	+	fclose(f);
126	+	mem_stat.used = mem_stat.total - mem_stat.free;
127	+	#endif
128	+
129	+	#ifdef FREEBSD
130	+	/* Returns bytes */
131	+	mib[0] = CTL_HW;
132	+	mib[1] = HW_PHYSMEM;
133	+	size = sizeof physmem;
134	+	if (sysctl(mib, 2, &physmem, &size, NULL, 0) < 0) {
135	+	return NULL;
136	+	}
137	+	mem_stat.total = physmem;
138	+
139	+	/*returns pages*/
140	+	size = sizeof free_count;
141	+	if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){
142	+	return NULL;
143	+	}
144	+
145	+	size = sizeof inactive_count;
146	+	if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){
147	+	return NULL;
148	+	}
149	+
150	+	size = sizeof cache_count;
151	+	if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){
152	+	return NULL;
153	+	}
154	+
155	+	/* Because all the vm.stats returns pages, I need to get the page size.
156	+	* After that I then need to multiple the anything that used vm.stats to
157	+	* get the system statistics by pagesize
158	+	*/
159	+	if ((pagesize=getpagesize()) == -1){
160	+	return NULL;
161	+	}
162	+
163	+	mem_stat.cache=cache_count*pagesize;
164	+
165	+	/* Of couse nothing is ever that simple :) And I have inactive pages to
166	+	* deal with too. So I'm going to add them to free memory :)
167	+	*/
168	+	mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize);
169	+	mem_stat.used=physmem-mem_stat.free;
170	+	#endif
171	+
172	+	#if defined(NETBSD) || defined(OPENBSD)
173	+	if ((uvm = get_uvmexp()) == NULL) {
174	+	return NULL;
175	+	}
176	+
177	+	mem_stat.total = uvm->pagesize * uvm->npages;
178	+	#ifdef NETBSD
179	+	mem_stat.cache = uvm->pagesize * (uvm->filepages + uvm->execpages);
180	+	#else
181	+	/* Can't find cache memory on OpenBSD */
182	+	mem_stat.cache = 0;
183	+	#endif
184	+	mem_stat.free = uvm->pagesize * (uvm->free + uvm->inactive);
185	+	mem_stat.used = mem_stat.total - mem_stat.free;
186	+	#endif
187	+
188	+	return &mem_stat;
189		}

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