libstatgrab/examples/vm_stats.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2003 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();

        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:	1.4
Committed:	Sun Nov 23 13:51:10 2003 UTC (21 years ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+10 -10 lines
Log Message:	Add statgrab_init() call to the examples. If people are going to copy them I guess we should try and make them correct :-) Also tidied up whitespace in the examples.
#	Content
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	#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	if( ((mem_stats=get_memory_stats()) != NULL) && (swap_stats=get_swap_stats()) != NULL){
50	printf("Total memory in bytes : %lld\n", mem_stats->total);
51	printf("Used memory in bytes : %lld\n", mem_stats->used);
52	printf("Cache memory in bytes : %lld\n", mem_stats->cache);
53	printf("Free memory in bytes : %lld\n", mem_stats->free);
54
55	printf("Swap total in bytes : %lld\n", swap_stats->total);
56	printf("Swap used in bytes : %lld\n", swap_stats->used);
57	printf("Swap free in bytes : %lld\n", swap_stats->free);
58
59	total = mem_stats->total + swap_stats->total;
60	free = mem_stats->free + swap_stats->free;
61
62	printf("Total VM usage : %5.2f%%\n", 100 - (((float)total/(float)free)));
63
64	}
65	exit(0);
66	}