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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 1.34 by tdb, Mon Oct 30 08:20:05 2006 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)
44	+	#include <sys/param.h>
45	+	#include <sys/time.h>
46	+	#include <uvm/uvm.h>
47	+	#endif
48	+	#if defined(OPENBSD)
49	+	#include <sys/param.h>
50	+	#include <sys/types.h>
51	+	#include <sys/sysctl.h>
52	+	#include <sys/unistd.h>
53	+	#endif
54	+	#ifdef HPUX
55	+	#include <sys/param.h>
56	+	#include <sys/pstat.h>
57	+	#include <unistd.h>
58	+	#endif
59	+	#ifdef WIN32
60	+	#include <windows.h>
61	+	#include "win32.h"
62	+	#endif
63
64	<	mem_stat_t *get_memory_stats(){
64	>	sg_mem_stats *sg_get_mem_stats(){
65
66	<	static mem_stat_t mem_stat;
66	>	static sg_mem_stats mem_stat;
67
68	+	#ifdef HPUX
69	+	struct pst_static *pstat_static;
70	+	struct pst_dynamic pstat_dynamic;
71	+	long long pagesize;
72	+	#endif
73		#ifdef SOLARIS
74		kstat_ctl_t *kc;
75		kstat_t *ksp;
#	Line 40 | Line 77 | mem_stat_t *get_memory_stats(){
77		long totalmem;
78		int pagesize;
79		#endif
80	+	#if defined(LINUX) || defined(CYGWIN)
81	+	char *line_ptr;
82	+	unsigned long long value;
83	+	FILE *f;
84	+	#endif
85	+	#if defined(FREEBSD) || defined(DFBSD)
86	+	int mib[2];
87	+	u_long physmem;
88	+	size_t size;
89	+	u_int free_count;
90	+	u_int cache_count;
91	+	u_int inactive_count;
92	+	int pagesize;
93	+	#endif
94	+	#if defined(NETBSD)
95	+	struct uvmexp *uvm;
96	+	#endif
97	+	#if defined(OPENBSD)
98	+	int mib[2];
99	+	struct vmtotal vmtotal;
100	+	size_t size;
101	+	static int pagesize, pageshift;
102	+	#endif
103	+	#ifdef WIN32
104	+	MEMORYSTATUSEX memstats;
105	+	#endif
106
107	+	#ifdef HPUX
108	+	if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
109	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
110	+	return NULL;
111	+	}
112	+
113	+	if (pstat_getdynamic(&pstat_dynamic, sizeof(pstat_dynamic), 1, 0) == -1) {
114	+	sg_set_error_with_errno(SG_ERROR_PSTAT, "pstat_dynamic");
115	+	return NULL;
116	+	}
117	+	pstat_static = sg_get_pstat_static();
118	+	if (pstat_static == NULL) {
119	+	return NULL;
120	+	}
121	+
122	+	/* FIXME Does this include swap? */
123	+	mem_stat.total = ((long long) pstat_static->physical_memory) * pagesize;
124	+	mem_stat.free = ((long long) pstat_dynamic.psd_free) * pagesize;
125	+	mem_stat.used = mem_stat.total - mem_stat.free;
126	+	#endif
127		#ifdef SOLARIS
128		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
129	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
130		return NULL;
131		}
132
133		if((totalmem=sysconf(_SC_PHYS_PAGES)) == -1){
134	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PHYS_PAGES");
135		return NULL;
136		}
137
138		if ((kc = kstat_open()) == NULL) {
139	+	sg_set_error(SG_ERROR_KSTAT_OPEN, NULL);
140		return NULL;
141		}
142		if((ksp=kstat_lookup(kc, "unix", 0, "system_pages")) == NULL){
143	+	sg_set_error(SG_ERROR_KSTAT_LOOKUP, "unix,0,system_pages");
144		return NULL;
145		}
146		if (kstat_read(kc, ksp, 0) == -1) {
147	+	sg_set_error(SG_ERROR_KSTAT_READ, NULL);
148		return NULL;
149		}
150		if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){
151	+	sg_set_error(SG_ERROR_KSTAT_DATA_LOOKUP, "freemem");
152		return NULL;
153		}
154	<	kstat_close(kc);
154	>	kstat_close(kc);
155
156		mem_stat.total = (long long)totalmem * (long long)pagesize;
157		mem_stat.free = ((long long)kn->value.ul) * (long long)pagesize;
158		mem_stat.used = mem_stat.total - mem_stat.free;
159		#endif
160
161	<	return &mem_stat;
161	>	#if defined(LINUX) || defined(CYGWIN)
162	>	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
163	>	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo");
164	>	return NULL;
165	>	}
166
167	+	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
168	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
169	+	continue;
170	+	}
171	+	value *= 1024;
172	+
173	+	if (strncmp(line_ptr, "MemTotal:", 9) == 0) {
174	+	mem_stat.total = value;
175	+	} else if (strncmp(line_ptr, "MemFree:", 8) == 0) {
176	+	mem_stat.free = value;
177	+	} else if (strncmp(line_ptr, "Cached:", 7) == 0) {
178	+	mem_stat.cache = value;
179	+	}
180	+	}
181	+
182	+	fclose(f);
183	+	mem_stat.used = mem_stat.total - mem_stat.free;
184	+	#endif
185	+
186	+	#if defined(FREEBSD) || defined(DFBSD)
187	+	/* Returns bytes */
188	+	mib[0] = CTL_HW;
189	+	mib[1] = HW_PHYSMEM;
190	+	size = sizeof physmem;
191	+	if (sysctl(mib, 2, &physmem, &size, NULL, 0) < 0) {
192	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_HW.HW_PHYSMEM");
193	+	return NULL;
194	+	}
195	+	mem_stat.total = physmem;
196	+
197	+	/*returns pages*/
198	+	size = sizeof free_count;
199	+	if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){
200	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
201	+	"vm.stats.vm.v_free_count");
202	+	return NULL;
203	+	}
204	+
205	+	size = sizeof inactive_count;
206	+	if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){
207	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
208	+	"vm.stats.vm.v_inactive_count");
209	+	return NULL;
210	+	}
211	+
212	+	size = sizeof cache_count;
213	+	if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){
214	+	sg_set_error_with_errno(SG_ERROR_SYSCTLBYNAME,
215	+	"vm.stats.vm.v_cache_count");
216	+	return NULL;
217	+	}
218	+
219	+	/* Because all the vm.stats returns pages, I need to get the page size.
220	+	* After that I then need to multiple the anything that used vm.stats to
221	+	* get the system statistics by pagesize
222	+	*/
223	+	pagesize = getpagesize();
224	+	mem_stat.cache=cache_count*pagesize;
225	+
226	+	/* Of couse nothing is ever that simple :) And I have inactive pages to
227	+	* deal with too. So I'm going to add them to free memory :)
228	+	*/
229	+	mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize);
230	+	mem_stat.used=physmem-mem_stat.free;
231	+	#endif
232	+
233	+	#if defined(NETBSD)
234	+	if ((uvm = sg_get_uvmexp()) == NULL) {
235	+	return NULL;
236	+	}
237	+
238	+	mem_stat.total = uvm->pagesize * uvm->npages;
239	+	mem_stat.cache = uvm->pagesize * (uvm->filepages + uvm->execpages);
240	+	mem_stat.free = uvm->pagesize * (uvm->free + uvm->inactive);
241	+	mem_stat.used = mem_stat.total - mem_stat.free;
242	+	#endif
243	+
244	+	#if defined(OPENBSD)
245	+	/* get the page size with "getpagesize" and calculate pageshift
246	+	* from it
247	+	*/
248	+	pagesize = getpagesize();
249	+	pageshift = 0;
250	+	while (pagesize > 1) {
251	+	pageshift++;
252	+	pagesize >>= 1;
253	+	}
254	+
255	+	/* we only need the amount of log(2)1024 for our conversion */
256	+	pageshift -= 10;        /* Log base 2 of 1024 is 10 (2^10 == 1024) */
257	+	#define pagetok(size) ((size) << pageshift)
258	+	mib[0] = CTL_VM;
259	+	mib[1] = VM_METER;
260	+	size = sizeof(vmtotal);
261	+	if (sysctl(mib, 2, &vmtotal, &size, NULL, 0) < 0) {
262	+	sg_set_error_with_errno(SG_ERROR_SYSCTL,
263	+	"CTL_VM.VM_METER");
264	+	return NULL;
265	+	}
266	+	/* convert memory stats to Kbytes */
267	+	mem_stat.used = pagetok(vmtotal.t_rm);          /* total real mem in use */
268	+	mem_stat.cache = 0;                             /* ? */
269	+	mem_stat.free = pagetok(vmtotal.t_free);        /* free memory pages */
270	+	mem_stat.total = (mem_stat.used + mem_stat.free);
271	+	#endif
272	+
273	+	#ifdef WIN32
274	+	memstats.dwLength = sizeof(memstats);
275	+	if (!GlobalMemoryStatusEx(&memstats)) {
276	+	sg_set_error_with_errno(SG_ERROR_MEMSTATUS, NULL);
277	+	return NULL;
278	+	}
279	+	mem_stat.free = memstats.ullAvailPhys;
280	+	mem_stat.total = memstats.ullTotalPhys;
281	+	mem_stat.used = mem_stat.total - mem_stat.free;
282	+	if(read_counter_large(SG_WIN32_MEM_CACHE, &mem_stat.cache)) {
283	+	mem_stat.cache = 0;
284	+	}
285	+	#endif
286	+	return &mem_stat;
287		}

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