libstatgrab/examples/vm_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <stdio.h>
#include <statgrab.h>
#include <stdlib.h>
#include <unistd.h>

int main(int argc, char **argv){

        extern char *optarg;
        extern int optind;
        int c;

        int delay = 1;
        mem_stat_t *mem_stats;
        swap_stat_t *swap_stats;

        long long total, free;

        while ((c = getopt(argc, argv, "d:")) != -1){
                switch (c){
                        case 'd':
                                delay = atoi(optarg);
                                break;
                }
        }

        /* Initialise statgrab */
        statgrab_init();

        /* Drop setuid/setgid privileges. */
        if (statgrab_drop_privileges() != 0) {
                perror("Error. Failed to drop privileges");
                return 1;
        }

        if( ((mem_stats=get_memory_stats()) != NULL) && (swap_stats=get_swap_stats()) != NULL){
                printf("Total memory in bytes : %lld\n", mem_stats->total);
                printf("Used memory in bytes : %lld\n", mem_stats->used);
                printf("Cache memory in bytes : %lld\n", mem_stats->cache);
                printf("Free memory in bytes : %lld\n", mem_stats->free);

                printf("Swap total in bytes : %lld\n", swap_stats->total);
                printf("Swap used in bytes : %lld\n", swap_stats->used);        
                printf("Swap free in bytes : %lld\n", swap_stats->free);

                total = mem_stats->total + swap_stats->total;
                free = mem_stats->free + swap_stats->free;

                printf("Total VM usage : %5.2f%%\n", 100 - (((float)total/(float)free)));

        }
        exit(0);
}
Revision:	1.6
Committed:	Fri Jan 16 15:54:52 2004 UTC (20 years, 9 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+1 -1 lines
Log Message:	Alter the licensing of libstatgrab. The library part is now under the LGPL, whilst the tools/examples are under the GPL. Both licenses are included in the distribution (and are both now in CVS). Also made a minor alteration to the webpage where it said everything was licensed under the GPL.
#	User	Rev	Content
1	pajs	1.1	/*
2			* i-scream central monitoring system
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			*/
20
21			#include <stdio.h>
22			#include <statgrab.h>
23			#include <stdlib.h>
24			#include <unistd.h>
25
26			int main(int argc, char **argv){
27	tdb	1.4
28	pajs	1.1	extern char *optarg;
29	tdb	1.4	extern int optind;
30			int c;
31	pajs	1.1
32			int delay = 1;
33			mem_stat_t *mem_stats;
34			swap_stat_t *swap_stats;
35
36			long long total, free;
37
38	ats	1.3	while ((c = getopt(argc, argv, "d:")) != -1){
39	tdb	1.4	switch (c){
40			case 'd':
41			delay = atoi(optarg);
42			break;
43	pajs	1.1	}
44			}
45
46	tdb	1.4	/* Initialise statgrab */
47			statgrab_init();
48
49	tdb	1.5	/* Drop setuid/setgid privileges. */
50			if (statgrab_drop_privileges() != 0) {
51			perror("Error. Failed to drop privileges");
52			return 1;
53			}
54
55	pajs	1.1	if( ((mem_stats=get_memory_stats()) != NULL) && (swap_stats=get_swap_stats()) != NULL){
56			printf("Total memory in bytes : %lld\n", mem_stats->total);
57			printf("Used memory in bytes : %lld\n", mem_stats->used);
58			printf("Cache memory in bytes : %lld\n", mem_stats->cache);
59			printf("Free memory in bytes : %lld\n", mem_stats->free);
60
61			printf("Swap total in bytes : %lld\n", swap_stats->total);
62			printf("Swap used in bytes : %lld\n", swap_stats->used);
63			printf("Swap free in bytes : %lld\n", swap_stats->free);
64
65			total = mem_stats->total + swap_stats->total;
66			free = mem_stats->free + swap_stats->free;
67
68			printf("Total VM usage : %5.2f%%\n", 100 - (((float)total/(float)free)));
69
70			}
71			exit(0);
72			}