| 1 |
/* |
| 2 |
* i-scream central monitoring system |
| 3 |
* http://www.i-scream.org.uk |
| 4 |
* Copyright (C) 2000-2002 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 |
|
| 36 |
mem_stat_t *get_memory_stats(){ |
| 37 |
|
| 38 |
static mem_stat_t mem_stat; |
| 39 |
|
| 40 |
#ifdef SOLARIS |
| 41 |
kstat_ctl_t *kc; |
| 42 |
kstat_t *ksp; |
| 43 |
kstat_named_t *kn; |
| 44 |
long totalmem; |
| 45 |
int pagesize; |
| 46 |
#endif |
| 47 |
#ifdef LINUX |
| 48 |
char *line_ptr; |
| 49 |
FILE *f; |
| 50 |
#endif |
| 51 |
|
| 52 |
#ifdef SOLARIS |
| 53 |
if((pagesize=sysconf(_SC_PAGESIZE)) == -1){ |
| 54 |
return NULL; |
| 55 |
} |
| 56 |
|
| 57 |
if((totalmem=sysconf(_SC_PHYS_PAGES)) == -1){ |
| 58 |
return NULL; |
| 59 |
} |
| 60 |
|
| 61 |
if ((kc = kstat_open()) == NULL) { |
| 62 |
return NULL; |
| 63 |
} |
| 64 |
if((ksp=kstat_lookup(kc, "unix", 0, "system_pages")) == NULL){ |
| 65 |
return NULL; |
| 66 |
} |
| 67 |
if (kstat_read(kc, ksp, 0) == -1) { |
| 68 |
return NULL; |
| 69 |
} |
| 70 |
if((kn=kstat_data_lookup(ksp, "freemem")) == NULL){ |
| 71 |
return NULL; |
| 72 |
} |
| 73 |
kstat_close(kc); |
| 74 |
|
| 75 |
mem_stat.total = (long long)totalmem * (long long)pagesize; |
| 76 |
mem_stat.free = ((long long)kn->value.ul) * (long long)pagesize; |
| 77 |
mem_stat.used = mem_stat.total - mem_stat.free; |
| 78 |
#endif |
| 79 |
|
| 80 |
#ifdef LINUX |
| 81 |
f=fopen("/proc/meminfo", "r"); |
| 82 |
if(f==NULL){ |
| 83 |
return NULL; |
| 84 |
} |
| 85 |
|
| 86 |
if((line_ptr=f_read_line(f, "Mem:"))==NULL){ |
| 87 |
fclose(f); |
| 88 |
return NULL; |
| 89 |
} |
| 90 |
|
| 91 |
fclose(f); |
| 92 |
|
| 93 |
/* Linux actually stores this as a unsigned long long, but |
| 94 |
* our structures are just long longs. This shouldn't be a |
| 95 |
* problem for sometime yet :) |
| 96 |
*/ |
| 97 |
if((sscanf(line_ptr,"Mem: %lld %lld %lld %*d %*d %lld", \ |
| 98 |
&mem_stat.total, \ |
| 99 |
&mem_stat.used, \ |
| 100 |
&mem_stat.free, \ |
| 101 |
&mem_stat.cache))!=4){ |
| 102 |
return NULL; |
| 103 |
} |
| 104 |
|
| 105 |
#endif |
| 106 |
|
| 107 |
return &mem_stat; |
| 108 |
|
| 109 |
} |
