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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 1.18 by tdb, Fri Jan 16 15:54:54 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
22		#ifdef HAVE_CONFIG_H
23		#include "config.h"
24		#endif
25
25	–	#include <stdio.h>
26		#include "statgrab.h"
27	<	#ifdef LINUX
28	<	#include <string.h>
29	<	#endif
27	>	#include "tools.h"
28		#ifdef SOLARIS
29		#include <unistd.h>
30		#include <kstat.h>
31		#endif
32	+	#if defined(LINUX) || defined(CYGWIN)
33	+	#include <stdio.h>
34	+	#include <string.h>
35	+	#endif
36		#ifdef FREEBSD
37		#include <sys/types.h>
38		#include <sys/sysctl.h>
#	Line 48 | Line 50 | mem_stat_t *get_memory_stats(){
50		long totalmem;
51		int pagesize;
52		#endif
53	+	#if defined(LINUX) || defined(CYGWIN)
54	+	char *line_ptr;
55	+	unsigned long long value;
56	+	FILE *f;
57	+	#endif
58	+	#ifdef FREEBSD
59	+	int mib[2];
60	+	u_long physmem;
61	+	size_t size;
62	+	u_int free_count;
63	+	u_int cache_count;
64	+	u_int inactive_count;
65	+	int pagesize;
66	+	#endif
67	+	#ifdef NETBSD
68	+	struct uvmexp *uvm;
69	+	#endif
70
71		#ifdef SOLARIS
72		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
#	Line 77 | Line 96 | mem_stat_t *get_memory_stats(){
96		mem_stat.used = mem_stat.total - mem_stat.free;
97		#endif
98
99	<	return &mem_stat;
99	>	#if defined(LINUX) || defined(CYGWIN)
100	>	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
101	>	return NULL;
102	>	}
103
104	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
105	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
106	+	continue;
107	+	}
108	+	value *= 1024;
109	+
110	+	if (strncmp(line_ptr, "MemTotal:", 9) == 0) {
111	+	mem_stat.total = value;
112	+	} else if (strncmp(line_ptr, "MemFree:", 8) == 0) {
113	+	mem_stat.free = value;
114	+	} else if (strncmp(line_ptr, "Cached:", 7) == 0) {
115	+	mem_stat.cache = value;
116	+	}
117	+	}
118	+
119	+	fclose(f);
120	+	mem_stat.used = mem_stat.total - mem_stat.free;
121	+	#endif
122	+
123	+	#ifdef FREEBSD
124	+	/* Returns bytes */
125	+	mib[0] = CTL_HW;
126	+	mib[1] = HW_PHYSMEM;
127	+	size = sizeof physmem;
128	+	if (sysctl(mib, 2, &physmem, &size, NULL, 0) < 0) {
129	+	return NULL;
130	+	}
131	+	mem_stat.total = physmem;
132	+
133	+	/*returns pages*/
134	+	size = sizeof free_count;
135	+	if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){
136	+	return NULL;
137	+	}
138	+
139	+	size = sizeof inactive_count;
140	+	if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){
141	+	return NULL;
142	+	}
143	+
144	+	size = sizeof cache_count;
145	+	if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){
146	+	return NULL;
147	+	}
148	+
149	+	/* Because all the vm.stats returns pages, I need to get the page size.
150	+	* After that I then need to multiple the anything that used vm.stats to
151	+	* get the system statistics by pagesize
152	+	*/
153	+	if ((pagesize=getpagesize()) == -1){
154	+	return NULL;
155	+	}
156	+
157	+	mem_stat.cache=cache_count*pagesize;
158	+
159	+	/* Of couse nothing is ever that simple :) And I have inactive pages to
160	+	* deal with too. So I'm going to add them to free memory :)
161	+	*/
162	+	mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize);
163	+	mem_stat.used=physmem-mem_stat.free;
164	+	#endif
165	+
166	+	#ifdef NETBSD
167	+	if ((uvm = get_uvmexp()) == NULL) {
168	+	return NULL;
169	+	}
170	+	mem_stat.total = uvm->pagesize * uvm->npages;
171	+	mem_stat.cache = uvm->pagesize * (uvm->filepages + uvm->execpages);
172	+	mem_stat.free = uvm->pagesize * (uvm->free + uvm->inactive);
173	+	mem_stat.used = mem_stat.total - mem_stat.free;
174	+	#endif
175	+
176	+	return &mem_stat;
177		}

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