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, 11 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.
#	Content
1	/*
2	* i-scream central monitoring system
3	* http://www.i-scream.org
4	* Copyright (C) 2000-2004 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	#include <stdio.h>
22	#include <statgrab.h>
23	#include <stdlib.h>
24	#include <unistd.h>
25
26	int main(int argc, char **argv){
27
28	extern char *optarg;
29	extern int optind;
30	int c;
31
32	int delay = 1;
33	mem_stat_t *mem_stats;
34	swap_stat_t *swap_stats;
35
36	long long total, free;
37
38	while ((c = getopt(argc, argv, "d:")) != -1){
39	switch (c){
40	case 'd':
41	delay = atoi(optarg);
42	break;
43	}
44	}
45
46	/* Initialise statgrab */
47	statgrab_init();
48
49	/* Drop setuid/setgid privileges. */
50	if (statgrab_drop_privileges() != 0) {
51	perror("Error. Failed to drop privileges");
52	return 1;
53	}
54
55	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	}