1 |
pajs |
1.1 |
/* |
2 |
|
|
* i-scream central monitoring system |
3 |
tdb |
1.7 |
* http://www.i-scream.org |
4 |
|
|
* Copyright (C) 2000-2003 i-scream |
5 |
pajs |
1.1 |
* |
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 "statgrab.h" |
26 |
|
|
#ifdef SOLARIS |
27 |
|
|
#include <unistd.h> |
28 |
|
|
#include <kstat.h> |
29 |
|
|
#endif |
30 |
pajs |
1.5 |
#ifdef LINUX |
31 |
|
|
#include <stdio.h> |
32 |
|
|
#include <string.h> |
33 |
|
|
#include "tools.h" |
34 |
|
|
#endif |
35 |
pajs |
1.6 |
#ifdef FREEBSD |
36 |
|
|
#include <sys/types.h> |
37 |
|
|
#include <sys/sysctl.h> |
38 |
|
|
#include <unistd.h> |
39 |
|
|
#endif |
40 |
pajs |
1.1 |
|
41 |
|
|
mem_stat_t *get_memory_stats(){ |
42 |
|
|
|
43 |
|
|
static mem_stat_t mem_stat; |
44 |
|
|
|
45 |
|
|
#ifdef SOLARIS |
46 |
|
|
kstat_ctl_t *kc; |
47 |
|
|
kstat_t *ksp; |
48 |
|
|
kstat_named_t *kn; |
49 |
|
|
long totalmem; |
50 |
|
|
int pagesize; |
51 |
|
|
#endif |
52 |
pajs |
1.5 |
#ifdef LINUX |
53 |
|
|
char *line_ptr; |
54 |
|
|
FILE *f; |
55 |
|
|
#endif |
56 |
pajs |
1.6 |
#ifdef FREEBSD |
57 |
tdb |
1.8 |
u_int free_count; |
58 |
|
|
u_int cache_count; |
59 |
|
|
u_int inactive_count; |
60 |
tdb |
1.9 |
u_long physmem; |
61 |
pajs |
1.6 |
size_t size; |
62 |
|
|
int pagesize; |
63 |
|
|
#endif |
64 |
pajs |
1.1 |
|
65 |
|
|
#ifdef SOLARIS |
66 |
|
|
if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
67 |
|
|
return NULL; |
68 |
|
|
} |
69 |
|
|
|
70 |
|
|
if((totalmem=sysconf(_SC_PHYS_PAGES)) == -1){ |
71 |
|
|
return NULL; |
72 |
|
|
} |
73 |
|
|
|
74 |
|
|
if ((kc = kstat_open()) == NULL) { |
75 |
|
|
return NULL; |
76 |
|
|
} |
77 |
|
|
if((ksp=kstat_lookup(kc, "unix", 0, "system_pages")) == NULL){ |
78 |
|
|
return NULL; |
79 |
|
|
} |
80 |
|
|
if (kstat_read(kc, ksp, 0) == -1) { |
81 |
|
|
return NULL; |
82 |
|
|
} |
83 |
|
|
if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){ |
84 |
|
|
return NULL; |
85 |
|
|
} |
86 |
pajs |
1.2 |
kstat_close(kc); |
87 |
|
|
|
88 |
pajs |
1.1 |
mem_stat.total = (long long)totalmem * (long long)pagesize; |
89 |
|
|
mem_stat.free = ((long long)kn->value.ul) * (long long)pagesize; |
90 |
|
|
mem_stat.used = mem_stat.total - mem_stat.free; |
91 |
pajs |
1.5 |
#endif |
92 |
|
|
|
93 |
|
|
#ifdef LINUX |
94 |
|
|
f=fopen("/proc/meminfo", "r"); |
95 |
|
|
if(f==NULL){ |
96 |
|
|
return NULL; |
97 |
|
|
} |
98 |
|
|
|
99 |
|
|
if((line_ptr=f_read_line(f, "Mem:"))==NULL){ |
100 |
|
|
fclose(f); |
101 |
|
|
return NULL; |
102 |
|
|
} |
103 |
|
|
|
104 |
|
|
fclose(f); |
105 |
|
|
|
106 |
|
|
/* Linux actually stores this as a unsigned long long, but |
107 |
|
|
* our structures are just long longs. This shouldn't be a |
108 |
|
|
* problem for sometime yet :) |
109 |
|
|
*/ |
110 |
|
|
if((sscanf(line_ptr,"Mem: %lld %lld %lld %*d %*d %lld", \ |
111 |
|
|
&mem_stat.total, \ |
112 |
|
|
&mem_stat.used, \ |
113 |
|
|
&mem_stat.free, \ |
114 |
|
|
&mem_stat.cache))!=4){ |
115 |
|
|
return NULL; |
116 |
|
|
} |
117 |
pajs |
1.6 |
|
118 |
|
|
#endif |
119 |
|
|
|
120 |
|
|
#ifdef FREEBSD |
121 |
tdb |
1.8 |
/* Returns bytes */ |
122 |
ats |
1.11 |
size = sizeof physmem; |
123 |
ats |
1.10 |
if (sysctlbyname("hw.physmem", &physmem, &size, NULL, 0) < 0){ |
124 |
pajs |
1.6 |
return NULL; |
125 |
|
|
} |
126 |
|
|
|
127 |
|
|
/*returns pages*/ |
128 |
ats |
1.11 |
size = sizeof free_count; |
129 |
ats |
1.10 |
if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, 0) < 0){ |
130 |
pajs |
1.6 |
return NULL; |
131 |
|
|
} |
132 |
|
|
|
133 |
ats |
1.11 |
size = sizeof inactive_count; |
134 |
ats |
1.10 |
if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, 0) < 0){ |
135 |
pajs |
1.6 |
return NULL; |
136 |
|
|
} |
137 |
|
|
|
138 |
ats |
1.11 |
size = sizeof cache_count; |
139 |
ats |
1.10 |
if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, 0) < 0){ |
140 |
pajs |
1.6 |
return NULL; |
141 |
|
|
} |
142 |
|
|
|
143 |
tdb |
1.8 |
/* Because all the vm.stats returns pages, I need to get the page size. |
144 |
|
|
* After that I then need to multiple the anything that used vm.stats to |
145 |
|
|
* get the system statistics by pagesize |
146 |
pajs |
1.6 |
*/ |
147 |
|
|
if ((pagesize=getpagesize()) == -1){ |
148 |
|
|
return NULL; |
149 |
|
|
} |
150 |
|
|
|
151 |
tdb |
1.8 |
mem_stat.total=physmem; |
152 |
|
|
mem_stat.cache=cache_count*pagesize; |
153 |
|
|
|
154 |
|
|
/* Of couse nothing is ever that simple :) And I have inactive pages to |
155 |
|
|
* deal with too. So I'm going to add them to free memory :) |
156 |
pajs |
1.6 |
*/ |
157 |
tdb |
1.8 |
mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize); |
158 |
|
|
mem_stat.used=physmem-mem_stat.free; |
159 |
pajs |
1.1 |
#endif |
160 |
|
|
|
161 |
|
|
return &mem_stat; |
162 |
|
|
|
163 |
|
|
} |