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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 1.1 by pajs, Tue Feb 18 19:28:30 2003 UTC vs.
Revision 1.19 by tdb, Mon Jan 19 16:49:21 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
39	–	#include "ukcprog.h"
43
44		mem_stat_t *get_memory_stats(){
45
#	Line 49 | Line 52 | mem_stat_t *get_memory_stats(){
52		long totalmem;
53		int pagesize;
54		#endif
55	+	#if defined(LINUX) || defined(CYGWIN)
56	+	char *line_ptr;
57	+	unsigned long long value;
58	+	FILE *f;
59	+	#endif
60	+	#ifdef FREEBSD
61	+	int mib[2];
62	+	u_long physmem;
63	+	size_t size;
64	+	u_int free_count;
65	+	u_int cache_count;
66	+	u_int inactive_count;
67	+	int pagesize;
68	+	#endif
69	+	#ifdef NETBSD
70	+	struct uvmexp *uvm;
71	+	#endif
72
73		#ifdef SOLARIS
74		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
#	Line 71 | Line 91 | mem_stat_t *get_memory_stats(){
91		if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){
92		return NULL;
93		}
94	<	if((kstat_close(kc)) != 0){
95	<	return NULL;
76	<	}
94	>	kstat_close(kc);
95	>
96		mem_stat.total = (long long)totalmem * (long long)pagesize;
97		mem_stat.free = ((long long)kn->value.ul) * (long long)pagesize;
98		mem_stat.used = mem_stat.total - mem_stat.free;
99		#endif
100
101	<	return &mem_stat;
101	>	#if defined(LINUX) || defined(CYGWIN)
102	>	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
103	>	return NULL;
104	>	}
105
106	+	while ((line_ptr = f_read_line(f, "")) != NULL) {
107	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
108	+	continue;
109	+	}
110	+	value *= 1024;
111	+
112	+	if (strncmp(line_ptr, "MemTotal:", 9) == 0) {
113	+	mem_stat.total = value;
114	+	} else if (strncmp(line_ptr, "MemFree:", 8) == 0) {
115	+	mem_stat.free = value;
116	+	} else if (strncmp(line_ptr, "Cached:", 7) == 0) {
117	+	mem_stat.cache = value;
118	+	}
119	+	}
120	+
121	+	fclose(f);
122	+	mem_stat.used = mem_stat.total - mem_stat.free;
123	+	#endif
124	+
125	+	#ifdef FREEBSD
126	+	/* Returns bytes */
127	+	mib[0] = CTL_HW;
128	+	mib[1] = HW_PHYSMEM;
129	+	size = sizeof physmem;
130	+	if (sysctl(mib, 2, &physmem, &size, NULL, 0) < 0) {
131	+	return NULL;
132	+	}
133	+	mem_stat.total = physmem;
134	+
135	+	/*returns pages*/
136	+	size = sizeof free_count;
137	+	if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){
138	+	return NULL;
139	+	}
140	+
141	+	size = sizeof inactive_count;
142	+	if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){
143	+	return NULL;
144	+	}
145	+
146	+	size = sizeof cache_count;
147	+	if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){
148	+	return NULL;
149	+	}
150	+
151	+	/* Because all the vm.stats returns pages, I need to get the page size.
152	+	* After that I then need to multiple the anything that used vm.stats to
153	+	* get the system statistics by pagesize
154	+	*/
155	+	if ((pagesize=getpagesize()) == -1){
156	+	return NULL;
157	+	}
158	+
159	+	mem_stat.cache=cache_count*pagesize;
160	+
161	+	/* Of couse nothing is ever that simple :) And I have inactive pages to
162	+	* deal with too. So I'm going to add them to free memory :)
163	+	*/
164	+	mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize);
165	+	mem_stat.used=physmem-mem_stat.free;
166	+	#endif
167	+
168	+	#ifdef NETBSD
169	+	if ((uvm = get_uvmexp()) == NULL) {
170	+	return NULL;
171	+	}
172	+	mem_stat.total = uvm->pagesize * uvm->npages;
173	+	mem_stat.cache = uvm->pagesize * (uvm->filepages + uvm->execpages);
174	+	mem_stat.free = uvm->pagesize * (uvm->free + uvm->inactive);
175	+	mem_stat.used = mem_stat.total - mem_stat.free;
176	+	#endif
177	+
178	+	return &mem_stat;
179		}

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