| 1 |
/* |
| 2 |
* i-scream central monitoring system |
| 3 |
* http://www.i-scream.org |
| 4 |
* Copyright (C) 2000-2003 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. |
| 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 |
#ifdef LINUX |
| 31 |
#include <stdio.h> |
| 32 |
#include <string.h> |
| 33 |
#include "tools.h" |
| 34 |
#endif |
| 35 |
#ifdef FREEBSD |
| 36 |
#include <sys/types.h> |
| 37 |
#include <sys/sysctl.h> |
| 38 |
#include <unistd.h> |
| 39 |
#endif |
| 40 |
|
| 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 |
#ifdef LINUX |
| 53 |
char *line_ptr; |
| 54 |
FILE *f; |
| 55 |
#endif |
| 56 |
#ifdef FREEBSD |
| 57 |
u_int free_count; |
| 58 |
u_int cache_count; |
| 59 |
u_int inactive_count; |
| 60 |
u_int physmem; |
| 61 |
size_t size; |
| 62 |
int pagesize; |
| 63 |
#endif |
| 64 |
|
| 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 |
kstat_close(kc); |
| 87 |
|
| 88 |
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 |
#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 |
|
| 118 |
#endif |
| 119 |
|
| 120 |
#ifdef FREEBSD |
| 121 |
/* Returns bytes */ |
| 122 |
if (sysctlbyname("hw.physmem", NULL, &size, NULL, NULL) < 0){ |
| 123 |
return NULL; |
| 124 |
} |
| 125 |
if (sysctlbyname("hw.physmem", &physmem, &size, NULL, NULL) < 0){ |
| 126 |
return NULL; |
| 127 |
} |
| 128 |
|
| 129 |
/*returns pages*/ |
| 130 |
if (sysctlbyname("vm.stats.vm.v_free_count", NULL, &size, NULL, NULL) < 0){ |
| 131 |
return NULL; |
| 132 |
} |
| 133 |
if (sysctlbyname("vm.stats.vm.v_free_count", &free_count, &size, NULL, NULL) < 0){ |
| 134 |
return NULL; |
| 135 |
} |
| 136 |
|
| 137 |
if (sysctlbyname("vm.stats.vm.v_inactive_count", NULL, &size, NULL, NULL) < 0){ |
| 138 |
return NULL; |
| 139 |
} |
| 140 |
if (sysctlbyname("vm.stats.vm.v_inactive_count", &inactive_count , &size, NULL, NULL) < 0){ |
| 141 |
return NULL; |
| 142 |
} |
| 143 |
|
| 144 |
if (sysctlbyname("vm.stats.vm.v_cache_count", NULL, &size, NULL, NULL) < 0){ |
| 145 |
return NULL; |
| 146 |
} |
| 147 |
if (sysctlbyname("vm.stats.vm.v_cache_count", &cache_count, &size, NULL, NULL) < 0){ |
| 148 |
return NULL; |
| 149 |
} |
| 150 |
|
| 151 |
/* Because all the vm.stats returns pages, I need to get the page size. |
| 152 |
* After that I then need to multiple the anything that used vm.stats to |
| 153 |
* get the system statistics by pagesize |
| 154 |
*/ |
| 155 |
if ((pagesize=getpagesize()) == -1){ |
| 156 |
return NULL; |
| 157 |
} |
| 158 |
|
| 159 |
mem_stat.total=physmem; |
| 160 |
mem_stat.cache=cache_count*pagesize; |
| 161 |
|
| 162 |
/* Of couse nothing is ever that simple :) And I have inactive pages to |
| 163 |
* deal with too. So I'm going to add them to free memory :) |
| 164 |
*/ |
| 165 |
mem_stat.free=(free_count*pagesize)+(inactive_count*pagesize); |
| 166 |
mem_stat.used=physmem-mem_stat.free; |
| 167 |
#endif |
| 168 |
|
| 169 |
return &mem_stat; |
| 170 |
|
| 171 |
} |
