ViewVC Help
View File | Revision Log | Show Annotations | Revision Graph | Root Listing
root/i-scream/projects/libstatgrab/examples/vm_stats.c
Revision: 1.11
Committed: Wed Apr 7 21:47:50 2004 UTC (20 years, 6 months ago) by tdb
Content type: text/plain
Branch: MAIN
CVS Tags: LIBSTATGRAB_0_10_3, LIBSTATGRAB_0_10_2, LIBSTATGRAB_0_10_1, LIBSTATGRAB_0_10
Changes since 1.10: +2 -2 lines
Log Message:
Bugfix in error setting code - we can't strlcpy a NULL.
Test out the error code in an example.

File Contents

# User Rev Content
1 pajs 1.1 /*
2 tdb 1.10 * i-scream libstatgrab
3 tdb 1.2 * http://www.i-scream.org
4 tdb 1.6 * Copyright (C) 2000-2004 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 tdb 1.7 *
20 tdb 1.11 * $Id: vm_stats.c,v 1.10 2004/04/06 14:52:56 tdb Exp $
21 pajs 1.1 */
22    
23     #include <stdio.h>
24     #include <statgrab.h>
25     #include <stdlib.h>
26     #include <unistd.h>
27    
28     int main(int argc, char **argv){
29 tdb 1.4
30 tdb 1.9 sg_mem_stats *mem_stats;
31     sg_swap_stats *swap_stats;
32 pajs 1.1
33     long long total, free;
34    
35 tdb 1.4 /* Initialise statgrab */
36 tdb 1.9 sg_init();
37 tdb 1.4
38 tdb 1.5 /* Drop setuid/setgid privileges. */
39 tdb 1.9 if (sg_drop_privileges() != 0) {
40 tdb 1.5 perror("Error. Failed to drop privileges");
41     return 1;
42     }
43    
44 tdb 1.9 if( ((mem_stats=sg_get_mem_stats()) != NULL) && (swap_stats=sg_get_swap_stats()) != NULL){
45 pajs 1.1 printf("Total memory in bytes : %lld\n", mem_stats->total);
46     printf("Used memory in bytes : %lld\n", mem_stats->used);
47     printf("Cache memory in bytes : %lld\n", mem_stats->cache);
48     printf("Free memory in bytes : %lld\n", mem_stats->free);
49    
50     printf("Swap total in bytes : %lld\n", swap_stats->total);
51     printf("Swap used in bytes : %lld\n", swap_stats->used);
52     printf("Swap free in bytes : %lld\n", swap_stats->free);
53    
54     total = mem_stats->total + swap_stats->total;
55     free = mem_stats->free + swap_stats->free;
56    
57     printf("Total VM usage : %5.2f%%\n", 100 - (((float)total/(float)free)));
58    
59 tdb 1.8 }
60     else {
61 tdb 1.11 printf("Unable to get VM stats: %s\n", sg_str_error(sg_get_error()));
62 tdb 1.8 exit(1);
63 pajs 1.1 }
64     exit(0);
65     }