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root/i-scream/projects/cms/source/ihost/libstatgrab/memory_stats.c

Comparing projects/cms/source/ihost/libstatgrab/memory_stats.c (file contents):
Revision 1.1 by pajs, Wed May 15 17:09:05 2002 UTC vs.
Revision 1.10 by tdb, Wed May 29 19:41:59 2002 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org.uk
4	+	* Copyright (C) 2000-2002 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.
10	+	*
11	+	* This program 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.
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.
19	+	*/
20	+
21	+	#ifdef HAVE_CONFIG_H
22	+	#include "config.h"
23	+	#endif
24	+
25		#include <stdio.h>
26	+	#ifdef LINUX
27		#include <string.h>
28	<	#include <local/ukcprog.h>
28	>	#endif
29	>	#ifdef SOLARIS
30	>	#include <unistd.h>
31	>	#include <kstat.h>
32	>	#endif
33	>	#ifdef FREEBSD
34	>	#include <sys/types.h>
35	>	#include <sys/sysctl.h>
36	>	#include <unistd.h>
37	>	#endif
38	>	#include "ukcprog.h"
39
5	–
40		char *get_memory_stats(){
41	<	long total=0;
42	<	long free=0;
43	<	long used=0;
44	<	long cache=0;
41	>	long long total=0;
42	>	long long free=0;
43	>	long long used=0;
44	>	long long cache=0;
45		char *xml_memory_stats;
46		#ifdef LINUX
47		FILE *f;
48		char *line;
49	<	long buffers;
49	>	long long buffers;
50		#endif
51	+	#ifdef SOLARIS
52	+	kstat_ctl_t *kc;
53	+	kstat_t *ksp;
54	+	kstat_named_t *kn;
55	+	u_long totalmem;
56	+	int pagesize;
57	+	#endif
58	+	#ifdef FREEBSD
59	+	#define TOTAL_MEM_NAME "hw.physmem"
60	+	#define FREE_MEM_NAME "vm.stats.vm.v_free_count"
61	+	#define INACTIVE_MEM_NAME "vm.stats.vm.v_inactive_count"
62	+	#define CACHE_MEM_NAME "vm.stats.vm.v_cache_count"
63	+	int pagesize;
64	+	long inactive;
65	+	size_t size;
66	+	#endif
67
68		#ifdef LINUX
69		if ((f=fopen("/proc/meminfo", "r" ))==NULL) {
#	Line 22 | Line 72 | char *get_memory_stats(){
72		}
73		while((line=fpgetline(f)) != NULL){
74		if (((strncmp(line,"Mem:",4)) == 0)) {
75	<	if((sscanf(line, "%*s %ld %ld %ld %*s %ld %ld", &total, &used, &free, &buffers, &cache)) != 5){
75	>	if((sscanf(line, "%*s %lld %lld %lld %*s %lld %lld", &total, &used, &free, &buffers, &cache)) != 5){
76		errf("Failed to read memory details (%m)");
77		return NULL;
78		}
#	Line 35 | Line 85 | char *get_memory_stats(){
85		}
86
87		cache=cache+buffers;
88	<	used=total-(free+cache);
88	>	used=total-free;
89
90		total=(total/1024)/1024;
91		used=(used/1024)/1024;
92		free=(free/1024)/1024;
93	<	cache=(free/1024)/1024;
93	>	cache=(cache/1024)/1024;
94		#endif
95	+	#ifdef SOLARIS
96	+	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
97	+	errf("Failed to get pagesize (%m)");
98	+	return NULL;
99	+	}
100	+
101	+	if((totalmem=sysconf(_SC_PHYS_PAGES)) == -1){
102	+	errf("Failed to get total memory");
103	+	return NULL;
104	+	}
105	+
106	+	if ((kc = kstat_open()) == NULL) {
107	+	errf("kstat_open failure (%m)");
108	+	return NULL;
109	+	}
110	+	if((ksp=kstat_lookup(kc, "unix", 0, "system_pages")) == NULL){
111	+	errf("kstat lookup for \"system_pages\" (%m)");
112	+	return NULL;
113	+	}
114	+	if (kstat_read(kc, ksp, 0) == -1) {
115	+	errf("Failed to read kstat details (%m)");
116	+	return NULL;
117	+	}
118	+	if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){
119	+	errf("Failed to get free memory (%m)");
120	+	return NULL;
121	+	}
122	+	if((kstat_close(kc)) != 0){
123	+	errf("Failed to close kstat control structure (%m)");
124	+	return NULL;
125	+	}
126	+	total=((totalmem*pagesize)/1024)/1024;
127	+	free=(((kn->value.ul)*pagesize)/1024)/1024;
128	+	used=total-free;
129	+	#endif
130	+	#ifdef FREEBSD
131	+	if ((pagesize=getpagesize()) == -1){
132	+	errf("Failed to get page size (%m)");
133	+	return NULL;
134	+	}
135	+
136	+	if (sysctlbyname(TOTAL_MEM_NAME, NULL, &size, NULL, NULL) < 0){
137	+	errf("sysctlbyname failed to get total memory (%m)");
138	+	return NULL;
139	+	}
140	+	if (sysctlbyname(TOTAL_MEM_NAME, &total, &size, NULL, NULL) < 0){
141	+	errf("Failed to get total memory stats (%m)");
142	+	return NULL;
143	+	}
144	+
145	+	if (sysctlbyname(FREE_MEM_NAME, NULL, &size, NULL, NULL) < 0){
146	+	errf("sysctlbyname failed to get free memory (%m)");
147	+	return NULL;
148	+	}
149	+	if (sysctlbyname(FREE_MEM_NAME, &free, &size, NULL, NULL) < 0){
150	+	errf("Failed to get free memory stats (%m)");
151	+	return NULL;
152	+	}
153	+
154	+	if (sysctlbyname(INACTIVE_MEM_NAME, NULL, &size, NULL, NULL) < 0){
155	+	errf("sysctlbyname failed to get inactive memory (%m)");
156	+	return NULL;
157	+	}
158	+	if (sysctlbyname(INACTIVE_MEM_NAME, &inactive, &size, NULL, NULL) < 0){
159	+	errf("Failed to get inactive memory stats (%m)");
160	+	return NULL;
161	+	}
162	+
163	+	if (sysctlbyname(CACHE_MEM_NAME, NULL, &size, NULL, NULL) < 0){
164	+	errf("sysctlbyname failed to get cache memory (%m)");
165	+	return NULL;
166	+	}
167	+	if (sysctlbyname(CACHE_MEM_NAME, &cache, &size, NULL, NULL) < 0){
168	+	errf("Failed to get cache memory stats (%m)");
169	+	return NULL;
170	+	}
171	+
172	+	total/=(1024*1024);
173	+	free=((free*pagesize)/(1024*1024))+((inactive*pagesize)/(1024*1024));
174	+	cache=((cache*pagesize)/(1024*1024));
175
176	<	if((xml_memory_stats=strf("<memory><total>%ld</total><free>%ld</free><used>%ld</used><cache>%ld</cache></memory>", total, free, used, cache)) == NULL){
176	>	/* used should also be cache+active+wired but its less effort this way :) */
177	>	used=total-free;
178	>
179	>	#endif
180	>
181	>	/* casting these from a long long to a long is a KLUDGE! please fix it :) */
182	>	if((xml_memory_stats=strf("<memory><total>%ld</total><free>%ld</free><used>%ld</used><cache>%ld</cache></memory>", (long)total, (long)free, (long)used, (long)cache)) == NULL){
183		errf("strf failed (%m)");
184		return NULL;
185		}
186	<	}
51	<
52	<	int main(){
53	<	printf("%s\n", get_memory_stats());
54	<	exit(0);
186	>	return xml_memory_stats;
187		}

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