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root/i-scream/projects/libstatgrab/src/libstatgrab/swap_stats.c

Comparing projects/libstatgrab/src/libstatgrab/swap_stats.c (file contents):
Revision 1.1 by pajs, Tue Feb 18 19:28:30 2003 UTC vs.
Revision 1.24 by tdb, Sat Sep 24 13:29:23 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>
26	–	#include "ukcprog.h"
28		#include "statgrab.h"
29	+	#include "tools.h"
30		#ifdef SOLARIS
31		#include <sys/stat.h>
32		#include <sys/swap.h>
33		#include <unistd.h>
34		#endif
35	+	#if defined(LINUX) || defined(CYGWIN)
36	+	#include <stdio.h>
37	+	#include <string.h>
38	+	#endif
39	+	#if defined(FREEBSD) || defined(DFBSD)
40	+	#ifdef FREEBSD5
41	+	#include <sys/param.h>
42	+	#include <sys/sysctl.h>
43	+	#include <sys/user.h>
44	+	#else
45	+	#include <sys/types.h>
46	+	#include <kvm.h>
47	+	#endif
48	+	#include <unistd.h>
49	+	#endif
50	+	#if defined(NETBSD) || defined(OPENBSD)
51	+	#include <sys/param.h>
52	+	#include <sys/time.h>
53	+	#include <uvm/uvm.h>
54	+	#include <unistd.h>
55	+	#endif
56	+	#ifdef HPUX
57	+	#include <sys/param.h>
58	+	#include <sys/pstat.h>
59	+	#include <unistd.h>
60	+	#define SWAP_BATCH 5
61	+	#endif
62	+	#ifdef WIN32
63	+	#include <windows.h>
64	+	#endif
65
66	<	swap_stat_t *get_swap_stats(){
66	>	sg_swap_stats *sg_get_swap_stats(){
67
68	<	static swap_stat_t swap_stat;
68	>	static sg_swap_stats swap_stat;
69
70	+	#ifdef HPUX
71	+	struct pst_swapinfo pstat_swapinfo[SWAP_BATCH];
72	+	int swapidx = 0;
73	+	int num, i;
74	+	#endif
75	+	#ifdef SOLARIS
76		struct anoninfo ai;
77		int pagesize;
78	+	#endif
79	+	#if defined(LINUX) || defined(CYGWIN)
80	+	FILE *f;
81	+	char *line_ptr;
82	+	unsigned long long value;
83	+	#endif
84	+	#if defined(FREEBSD) || defined(DFBSD)
85	+	int pagesize;
86	+	#ifdef FREEBSD5
87	+	struct xswdev xsw;
88	+	int mib[16], n;
89	+	size_t mibsize, size;
90	+	#else
91	+	struct kvm_swap swapinfo;
92	+	kvm_t *kvmd;
93	+	#endif
94	+	#endif
95	+	#if defined(NETBSD) || defined(OPENBSD)
96	+	struct uvmexp *uvm;
97	+	#endif
98	+	#ifdef WIN32
99	+	MEMORYSTATUSEX memstats;
100	+	#endif
101
102	+	#ifdef HPUX
103	+	swap_stat.total = 0;
104	+	swap_stat.used = 0;
105	+	swap_stat.free = 0;
106	+
107	+	while (1) {
108	+	num = pstat_getswap(pstat_swapinfo, sizeof pstat_swapinfo[0],
109	+	SWAP_BATCH, swapidx);
110	+	if (num == -1) {
111	+	sg_set_error_with_errno(SG_ERROR_PSTAT,
112	+	"pstat_getswap");
113	+	return NULL;
114	+	} else if (num == 0) {
115	+	break;
116	+	}
117	+
118	+	for (i = 0; i < num; i++) {
119	+	struct pst_swapinfo *si = &pstat_swapinfo[i];
120	+
121	+	if ((si->pss_flags & SW_ENABLED) != SW_ENABLED) {
122	+	continue;
123	+	}
124	+
125	+	if ((si->pss_flags & SW_BLOCK) == SW_BLOCK) {
126	+	swap_stat.total += ((long long) si->pss_nblksavail) * 1024LL;
127	+	swap_stat.used += ((long long) si->pss_nfpgs) * 1024LL;
128	+	swap_stat.free = swap_stat.total - swap_stat.used;
129	+	}
130	+	if ((si->pss_flags & SW_FS) == SW_FS) {
131	+	swap_stat.total += ((long long) si->pss_limit) * 1024LL;
132	+	swap_stat.used += ((long long) si->pss_allocated) * 1024LL;
133	+	swap_stat.free = swap_stat.total - swap_stat.used;
134	+	}
135	+	}
136	+	swapidx = pstat_swapinfo[num - 1].pss_idx + 1;
137	+	}
138	+	#endif
139	+	#ifdef SOLARIS
140		if((pagesize=sysconf(_SC_PAGESIZE)) == -1){
141	+	sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
142		return NULL;
143		}
144		if (swapctl(SC_AINFO, &ai) == -1) {
145	+	sg_set_error_with_errno(SG_ERROR_SWAPCTL, NULL);
146		return NULL;
147		}
148		swap_stat.total = (long long)ai.ani_max * (long long)pagesize;
149		swap_stat.used = (long long)ai.ani_resv * (long long)pagesize;
150		swap_stat.free = swap_stat.total - swap_stat.used;
151	+	#endif
152	+	#if defined(LINUX) || defined(CYGWIN)
153	+	if ((f = fopen("/proc/meminfo", "r")) == NULL) {
154	+	sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo");
155	+	return NULL;
156	+	}
157	+
158	+	while ((line_ptr = sg_f_read_line(f, "")) != NULL) {
159	+	if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) {
160	+	continue;
161	+	}
162	+	value *= 1024;
163	+
164	+	if (strncmp(line_ptr, "SwapTotal:", 10) == 0) {
165	+	swap_stat.total = value;
166	+	} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) {
167	+	swap_stat.free = value;
168	+	}
169	+	}
170	+
171	+	fclose(f);
172	+	swap_stat.used = swap_stat.total - swap_stat.free;
173	+	#endif
174	+	#if defined(FREEBSD) || defined(DFBSD)
175	+	pagesize=getpagesize();
176	+
177	+	#ifdef FREEBSD5
178	+	swap_stat.total = 0;
179	+	swap_stat.used = 0;
180	+
181	+	mibsize = sizeof mib / sizeof mib[0];
182	+	if (sysctlnametomib("vm.swap_info", mib, &mibsize) < 0) {
183	+	sg_set_error_with_errno(SG_ERROR_SYSCTLNAMETOMIB,
184	+	"vm.swap_info");
185	+	return NULL;
186	+	}
187	+	for (n = 0; ; ++n) {
188	+	mib[mibsize] = n;
189	+	size = sizeof xsw;
190	+	if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, NULL) < 0) {
191	+	break;
192	+	}
193	+	if (xsw.xsw_version != XSWDEV_VERSION) {
194	+	sg_set_error(SG_ERROR_XSW_VER_MISMATCH, NULL);
195	+	return NULL;
196	+	}
197	+	swap_stat.total += (long long) xsw.xsw_nblks;
198	+	swap_stat.used += (long long) xsw.xsw_used;
199	+	}
200	+	if (errno != ENOENT) {
201	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "vm.swap_info");
202	+	return NULL;
203	+	}
204	+	#else
205	+	if((kvmd = sg_get_kvm()) == NULL){
206	+	return NULL;
207	+	}
208	+	if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){
209	+	sg_set_error(SG_ERROR_KVM_GETSWAPINFO, NULL);
210	+	return NULL;
211	+	}
212	+
213	+	swap_stat.total = (long long)swapinfo.ksw_total;
214	+	swap_stat.used = (long long)swapinfo.ksw_used;
215	+	#endif
216	+	swap_stat.total *= pagesize;
217	+	swap_stat.used *= pagesize;
218	+	swap_stat.free = swap_stat.total - swap_stat.used;
219	+	#endif
220	+	#if defined(NETBSD) || defined(OPENBSD)
221	+	if ((uvm = sg_get_uvmexp()) == NULL) {
222	+	return NULL;
223	+	}
224	+
225	+	swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages;
226	+	swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse;
227	+	swap_stat.free = swap_stat.total - swap_stat.used;
228	+	#endif
229	+	#ifdef WIN32
230	+	memstats.dwLength = sizeof(memstats);
231	+	if (!GlobalMemoryStatusEx(&memstats)) {
232	+	sg_set_error_with_errno(SG_ERROR_MEMSTATUS,
233	+	"GloblaMemoryStatusEx");
234	+	return NULL;
235	+	}
236	+	/* the PageFile stats include Phys memory "minus an overhead".
237	+	* Due to this unknown "overhead" there's no way to extract just page
238	+	* file use from these numbers */
239	+	swap_stat.total = memstats.ullTotalPageFile;
240	+	swap_stat.free = memstats.ullAvailPageFile;
241	+	swap_stat.used = swap_stat.total - swap_stat.free;
242	+	#endif
243
244		return &swap_stat;
245

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