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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 1.4 by tdb, Fri Feb 28 22:59:35 2003 UTC vs.
Revision 1.32 by tdb, Sat Sep 24 13:29:22 2005 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
1	>	/*
2	>	* i-scream libstatgrab
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	+	#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	+	#if defined(FREEBSD) || defined(DFBSD)
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 <sys/time.h>
46	+	#include <uvm/uvm.h>
47	+	#endif
48	+	#ifdef HPUX
49	+	#include <sys/param.h>
50	+	#include <sys/pstat.h>
51	+	#include <unistd.h>
52	+	#endif
53	+	#ifdef WIN32
54	+	#include <windows.h>
55	+	#include "win32.h"
56	+	#endif
57
58	<	mem_stat_t *get_memory_stats(){
58	>	sg_mem_stats *sg_get_mem_stats(){
59
60	<	static mem_stat_t mem_stat;
60	>	static sg_mem_stats mem_stat;
61
62	+	#ifdef HPUX
63	+	struct pst_static *pstat_static;
64	+	struct pst_dynamic pstat_dynamic;
65	+	long long pagesize;
66	+	#endif
67		#ifdef SOLARIS
68		kstat_ctl_t *kc;
69		kstat_t *ksp;
#	Line 40 | Line 71 | mem_stat_t *get_memory_stats(){
71		long totalmem;
72		int pagesize;
73		#endif
74	+	#if defined(LINUX) || defined(CYGWIN)
75	+	char *line_ptr;
76	+	unsigned long long value;
77	+	FILE *f;
78	+	#endif
79	+	#if defined(FREEBSD) || defined(DFBSD)
80	+	int mib[2];
81	+	u_long physmem;
82	+	size_t size;
83	+	u_int free_count;
84	+	u_int cache_count;
85	+	u_int inactive_count;
86	+	int pagesize;
87	+	#endif
88	+	#if defined(NETBSD) || defined(OPENBSD)
89	+	struct uvmexp *uvm;
90	+	#endif
91	+	#ifdef WIN32
92	+	MEMORYSTATUSEX memstats;
93	+	#endif
94
95	+	#ifdef HPUX
96	+	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
97	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
98	+	return NULL;
99	+	}
100	+
101	+	if (pstat_getdynamic(&pstat_dynamic, sizeof(pstat_dynamic), 1, 0) == -1) {
102	+	sg_set_error_with_errno(SG_ERROR_PSTAT, "pstat_dynamic");
103	+	return NULL;
104	+	}
105	+	pstat_static = sg_get_pstat_static();
106	+	if (pstat_static == NULL) {
107	+	return NULL;
108	+	}
109	+
110	+	/* FIXME Does this include swap? */
111	+	mem_stat.total = ((long long) pstat_static->physical_memory) * pagesize;
112	+	mem_stat.free = ((long long) pstat_dynamic.psd_free) * pagesize;
113	+	mem_stat.used = mem_stat.total - mem_stat.free;
114	+	#endif
115		#ifdef SOLARIS
116		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
117	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
118		return NULL;
119		}
120
121		if((totalmem=sysconf(_SC_PHYS_PAGES)) == -1){
122	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PHYS_PAGES");
123		return NULL;
124		}
125
126		if ((kc = kstat_open()) == NULL) {
127	+	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
128		return NULL;
129		}
130		if((ksp=kstat_lookup(kc, "unix", 0, "system_pages")) == NULL){
131	+	sg_set_error(SG_ERROR_KSTAT_LOOKUP, "unix,0,system_pages");
132		return NULL;
133		}
134		if (kstat_read(kc, ksp, 0) == -1) {
135	+	sg_set_error(SG_ERROR_KSTAT_READ, NULL);
136		return NULL;
137		}
138		if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){
139	+	sg_set_error(SG_ERROR_KSTAT_DATA_LOOKUP, "freemem");
140		return NULL;
141		}
142	<	kstat_close(kc);
142	>	kstat_close(kc);
143
144		mem_stat.total = (long long)totalmem * (long long)pagesize;
145		mem_stat.free = ((long long)kn->value.ul) * (long long)pagesize;
146		mem_stat.used = mem_stat.total - mem_stat.free;
147		#endif
148
149	<	return &mem_stat;
149	>	#if defined(LINUX) || defined(CYGWIN)
150	>	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
151	>	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo");
152	>	return NULL;
153	>	}
154
155	+	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
156	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
157	+	continue;
158	+	}
159	+	value *= 1024;
160	+
161	+	if (strncmp(line_ptr, "MemTotal:", 9) == 0) {
162	+	mem_stat.total = value;
163	+	} else if (strncmp(line_ptr, "MemFree:", 8) == 0) {
164	+	mem_stat.free = value;
165	+	} else if (strncmp(line_ptr, "Cached:", 7) == 0) {
166	+	mem_stat.cache = value;
167	+	}
168	+	}
169	+
170	+	fclose(f);
171	+	mem_stat.used = mem_stat.total - mem_stat.free;
172	+	#endif
173	+
174	+	#if defined(FREEBSD) || defined(DFBSD)
175	+	/* Returns bytes */
176	+	mib[0] = CTL_HW;
177	+	mib[1] = HW_PHYSMEM;
178	+	size = sizeof physmem;
179	+	if (sysctl(mib, 2, &physmem, &size, NULL, 0) < 0) {
180	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_PHYSMEM");
181	+	return NULL;
182	+	}
183	+	mem_stat.total = physmem;
184	+
185	+	/*returns pages*/
186	+	size = sizeof free_count;
187	+	if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){
188	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
189	+	"vm.stats.vm.v_free_count");
190	+	return NULL;
191	+	}
192	+
193	+	size = sizeof inactive_count;
194	+	if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){
195	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
196	+	"vm.stats.vm.v_inactive_count");
197	+	return NULL;
198	+	}
199	+
200	+	size = sizeof cache_count;
201	+	if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){
202	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
203	+	"vm.stats.vm.v_cache_count");
204	+	return NULL;
205	+	}
206	+
207	+	/* Because all the vm.stats returns pages, I need to get the page size.
208	+	* After that I then need to multiple the anything that used vm.stats to
209	+	* get the system statistics by pagesize
210	+	*/
211	+	pagesize = getpagesize();
212	+	mem_stat.cache=cache_count*pagesize;
213	+
214	+	/* Of couse nothing is ever that simple :) And I have inactive pages to
215	+	* deal with too. So I'm going to add them to free memory :)
216	+	*/
217	+	mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize);
218	+	mem_stat.used=physmem-mem_stat.free;
219	+	#endif
220	+
221	+	#if defined(NETBSD) || defined(OPENBSD)
222	+	if ((uvm = sg_get_uvmexp()) == NULL) {
223	+	return NULL;
224	+	}
225	+
226	+	mem_stat.total = uvm->pagesize * uvm->npages;
227	+	#ifdef NETBSD
228	+	mem_stat.cache = uvm->pagesize * (uvm->filepages + uvm->execpages);
229	+	#else
230	+	/* Can't find cache memory on OpenBSD */
231	+	mem_stat.cache = 0;
232	+	#endif
233	+	mem_stat.free = uvm->pagesize * (uvm->free + uvm->inactive);
234	+	mem_stat.used = mem_stat.total - mem_stat.free;
235	+	#endif
236	+
237	+	#ifdef WIN32
238	+	memstats.dwLength = sizeof(memstats);
239	+	if (!GlobalMemoryStatusEx(&memstats)) {
240	+	sg_set_error_with_errno(SG_ERROR_MEMSTATUS, NULL);
241	+	return NULL;
242	+	}
243	+	mem_stat.free = memstats.ullAvailPhys;
244	+	mem_stat.total = memstats.ullTotalPhys;
245	+	mem_stat.used = mem_stat.total - mem_stat.free;
246	+	if(read_counter_large(SG_WIN32_MEM_CACHE, &mem_stat.cache)) {
247	+	mem_stat.cache = 0;
248	+	}
249	+	#endif
250	+	return &mem_stat;
251		}

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