libstatgrab/examples/cpu_usage.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.
 *
 * $Id: cpu_usage.c,v 1.8 2004/04/04 22:48:49 tdb Exp $
 */

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

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

        extern char *optarg;
        int c;

        int delay = 1;
        sg_cpu_percents *cpu_percent;

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

        /* Initialise statgrab */
        sg_init();

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

        /* Throw away the first reading as thats averaged over the machines uptime */
        cpu_percent = sg_get_cpu_percents();

        /* Clear the screen ready for display the cpu usage */
        printf("\033[2J");

        while( (cpu_percent = sg_get_cpu_percents()) != NULL){
                printf("\033[2;2H%-12s : %6.2f", "User CPU", cpu_percent->user);
                printf("\033[3;2H%-12s : %6.2f", "Kernel CPU", cpu_percent->kernel);
                printf("\033[4;2H%-12s : %6.2f", "IOWait CPU", cpu_percent->iowait);
                printf("\033[5;2H%-12s : %6.2f", "Swap CPU", cpu_percent->swap);
                printf("\033[6;2H%-12s : %6.2f", "Nice CPU", cpu_percent->nice);
                printf("\033[7;2H%-12s : %6.2f", "Idle CPU", cpu_percent->idle);
                fflush(stdout);
                sleep(delay);
        }

        exit(0);
}
Revision:	1.9
Committed:	Mon Apr 5 16:23:08 2004 UTC (20 years, 1 month ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.8:	+6 -6 lines
Log Message:	Update examples to use new names. I guess some renaming could probably be done here, but at least they all compile again now.
#	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	tdb	1.7	*
20	tdb	1.9	* $Id: cpu_usage.c,v 1.8 2004/04/04 22:48:49 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	pajs	1.1	extern char *optarg;
31	tdb	1.4	int c;
32	pajs	1.1
33			int delay = 1;
34	tdb	1.9	sg_cpu_percents *cpu_percent;
35	pajs	1.1
36	ats	1.3	while ((c = getopt(argc, argv, "d:")) != -1){
37	tdb	1.4	switch (c){
38			case 'd':
39			delay = atoi(optarg);
40			break;
41	pajs	1.1	}
42			}
43
44	tdb	1.4	/* Initialise statgrab */
45	tdb	1.9	sg_init();
46	tdb	1.4
47	tdb	1.5	/* Drop setuid/setgid privileges. */
48	tdb	1.9	if (sg_drop_privileges() != 0) {
49	tdb	1.5	perror("Error. Failed to drop privileges");
50			return 1;
51			}
52
53	tdb	1.4	/* Throw away the first reading as thats averaged over the machines uptime */
54	tdb	1.9	cpu_percent = sg_get_cpu_percents();
55	tdb	1.4
56			/* Clear the screen ready for display the cpu usage */
57			printf("\033[2J");
58	pajs	1.1
59	tdb	1.9	while( (cpu_percent = sg_get_cpu_percents()) != NULL){
60	pajs	1.1	printf("\033[2;2H%-12s : %6.2f", "User CPU", cpu_percent->user);
61			printf("\033[3;2H%-12s : %6.2f", "Kernel CPU", cpu_percent->kernel);
62			printf("\033[4;2H%-12s : %6.2f", "IOWait CPU", cpu_percent->iowait);
63			printf("\033[5;2H%-12s : %6.2f", "Swap CPU", cpu_percent->swap);
64			printf("\033[6;2H%-12s : %6.2f", "Nice CPU", cpu_percent->nice);
65			printf("\033[7;2H%-12s : %6.2f", "Idle CPU", cpu_percent->idle);
66			fflush(stdout);
67			sleep(delay);
68			}
69
70			exit(0);
71			}