1 |
/* |
2 |
* i-scream libstatgrab |
3 |
* http://www.i-scream.org |
4 |
* Copyright (C) 2000-2004 i-scream |
5 |
* |
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 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 GNU |
14 |
* Lesser General Public License for more details. |
15 |
* |
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: swap_stats.c,v 1.22 2004/11/01 18:30:17 tdb Exp $ |
22 |
*/ |
23 |
|
24 |
#ifdef HAVE_CONFIG_H |
25 |
#include "config.h" |
26 |
#endif |
27 |
|
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 |
|
63 |
sg_swap_stats *sg_get_swap_stats(){ |
64 |
|
65 |
static sg_swap_stats swap_stat; |
66 |
|
67 |
#ifdef HPUX |
68 |
struct pst_swapinfo pstat_swapinfo[SWAP_BATCH]; |
69 |
int swapidx = 0; |
70 |
int num, i; |
71 |
#endif |
72 |
#ifdef SOLARIS |
73 |
struct anoninfo ai; |
74 |
int pagesize; |
75 |
#endif |
76 |
#if defined(LINUX) || defined(CYGWIN) |
77 |
FILE *f; |
78 |
char *line_ptr; |
79 |
unsigned long long value; |
80 |
#endif |
81 |
#if defined(FREEBSD) || defined(DFBSD) |
82 |
int pagesize; |
83 |
#ifdef FREEBSD5 |
84 |
struct xswdev xsw; |
85 |
int mib[16], n; |
86 |
size_t mibsize, size; |
87 |
#else |
88 |
struct kvm_swap swapinfo; |
89 |
kvm_t *kvmd; |
90 |
#endif |
91 |
#endif |
92 |
#if defined(NETBSD) || defined(OPENBSD) |
93 |
struct uvmexp *uvm; |
94 |
#endif |
95 |
|
96 |
#ifdef HPUX |
97 |
swap_stat.total = 0; |
98 |
swap_stat.used = 0; |
99 |
swap_stat.free = 0; |
100 |
|
101 |
while (1) { |
102 |
num = pstat_getswap(pstat_swapinfo, sizeof pstat_swapinfo[0], |
103 |
SWAP_BATCH, swapidx); |
104 |
if (num == -1) { |
105 |
sg_set_error_with_errno(SG_ERROR_PSTAT, |
106 |
"pstat_getswap"); |
107 |
return NULL; |
108 |
} else if (num == 0) { |
109 |
break; |
110 |
} |
111 |
|
112 |
for (i = 0; i < num; i++) { |
113 |
struct pst_swapinfo *si = &pstat_swapinfo[i]; |
114 |
|
115 |
if ((si->pss_flags & SW_ENABLED) != SW_ENABLED) { |
116 |
continue; |
117 |
} |
118 |
|
119 |
if ((si->pss_flags & SW_BLOCK) == SW_BLOCK) { |
120 |
swap_stat.total += ((long long) si->pss_nblksavail) * 1024LL; |
121 |
swap_stat.used += ((long long) si->pss_nfpgs) * 1024LL; |
122 |
swap_stat.free = swap_stat.total - swap_stat.used; |
123 |
} |
124 |
if ((si->pss_flags & SW_FS) == SW_FS) { |
125 |
swap_stat.total += ((long long) si->pss_limit) * 1024LL; |
126 |
swap_stat.used += ((long long) si->pss_allocated) * 1024LL; |
127 |
swap_stat.free = swap_stat.total - swap_stat.used; |
128 |
} |
129 |
} |
130 |
swapidx = pstat_swapinfo[num - 1].pss_idx + 1; |
131 |
} |
132 |
#endif |
133 |
#ifdef SOLARIS |
134 |
if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
135 |
sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE"); |
136 |
return NULL; |
137 |
} |
138 |
if (swapctl(SC_AINFO, &ai) == -1) { |
139 |
sg_set_error_with_errno(SG_ERROR_SWAPCTL, NULL); |
140 |
return NULL; |
141 |
} |
142 |
swap_stat.total = (long long)ai.ani_max * (long long)pagesize; |
143 |
swap_stat.used = (long long)ai.ani_resv * (long long)pagesize; |
144 |
swap_stat.free = swap_stat.total - swap_stat.used; |
145 |
#endif |
146 |
#if defined(LINUX) || defined(CYGWIN) |
147 |
if ((f = fopen("/proc/meminfo", "r")) == NULL) { |
148 |
sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/meminfo"); |
149 |
return NULL; |
150 |
} |
151 |
|
152 |
while ((line_ptr = sg_f_read_line(f, "")) != NULL) { |
153 |
if (sscanf(line_ptr, "%*s %llu kB", &value) != 1) { |
154 |
continue; |
155 |
} |
156 |
value *= 1024; |
157 |
|
158 |
if (strncmp(line_ptr, "SwapTotal:", 10) == 0) { |
159 |
swap_stat.total = value; |
160 |
} else if (strncmp(line_ptr, "SwapFree:", 9) == 0) { |
161 |
swap_stat.free = value; |
162 |
} |
163 |
} |
164 |
|
165 |
fclose(f); |
166 |
swap_stat.used = swap_stat.total - swap_stat.free; |
167 |
#endif |
168 |
#if defined(FREEBSD) || defined(DFBSD) |
169 |
pagesize=getpagesize(); |
170 |
|
171 |
#ifdef FREEBSD5 |
172 |
swap_stat.total = 0; |
173 |
swap_stat.used = 0; |
174 |
|
175 |
mibsize = sizeof mib / sizeof mib[0]; |
176 |
if (sysctlnametomib("vm.swap_info", mib, &mibsize) < 0) { |
177 |
sg_set_error_with_errno(SG_ERROR_SYSCTLNAMETOMIB, |
178 |
"vm.swap_info"); |
179 |
return NULL; |
180 |
} |
181 |
for (n = 0; ; ++n) { |
182 |
mib[mibsize] = n; |
183 |
size = sizeof xsw; |
184 |
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, NULL) < 0) { |
185 |
break; |
186 |
} |
187 |
if (xsw.xsw_version != XSWDEV_VERSION) { |
188 |
sg_set_error(SG_ERROR_XSW_VER_MISMATCH, NULL); |
189 |
return NULL; |
190 |
} |
191 |
swap_stat.total += (long long) xsw.xsw_nblks; |
192 |
swap_stat.used += (long long) xsw.xsw_used; |
193 |
} |
194 |
if (errno != ENOENT) { |
195 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "vm.swap_info"); |
196 |
return NULL; |
197 |
} |
198 |
#else |
199 |
if((kvmd = sg_get_kvm()) == NULL){ |
200 |
return NULL; |
201 |
} |
202 |
if ((kvm_getswapinfo(kvmd, &swapinfo, 1,0)) == -1){ |
203 |
sg_set_error(SG_ERROR_KVM_GETSWAPINFO, NULL); |
204 |
return NULL; |
205 |
} |
206 |
|
207 |
swap_stat.total = (long long)swapinfo.ksw_total; |
208 |
swap_stat.used = (long long)swapinfo.ksw_used; |
209 |
#endif |
210 |
swap_stat.total *= pagesize; |
211 |
swap_stat.used *= pagesize; |
212 |
swap_stat.free = swap_stat.total - swap_stat.used; |
213 |
#endif |
214 |
#if defined(NETBSD) || defined(OPENBSD) |
215 |
if ((uvm = sg_get_uvmexp()) == NULL) { |
216 |
return NULL; |
217 |
} |
218 |
|
219 |
swap_stat.total = (long long)uvm->pagesize * (long long)uvm->swpages; |
220 |
swap_stat.used = (long long)uvm->pagesize * (long long)uvm->swpginuse; |
221 |
swap_stat.free = swap_stat.total - swap_stat.used; |
222 |
#endif |
223 |
|
224 |
return &swap_stat; |
225 |
|
226 |
} |