ViewVC Help
View File | Revision Log | Show Annotations | Revision Graph | Root Listing
root/i-scream/projects/libstatgrab/examples/cpu_usage.c
Revision: 1.1
Committed: Thu Jun 5 14:45:39 2003 UTC (21 years, 5 months ago) by pajs
Content type: text/plain
Branch: MAIN
Log Message:
Example of how to get and display cpu usage.

File Contents

# Content
1 /*
2 * i-scream central monitoring system
3 * http://www.i-scream.org.uk
4 * Copyright (C) 2000-2002 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 cpu_percent_t *cpu_percent;
34
35 /* Throw away the first reading as thats averaged over the machines uptime */
36 cpu_percent = cpu_percent_usage();
37
38 while ((c = getopt(argc, argv, "d:")) != EOF){
39 switch (c){
40 case 'd':
41 delay = atoi(optarg);
42 break;
43 }
44 }
45
46 /* Clear the screen ready for display the cpu usage */
47 printf("\033[2J");
48
49 while( (cpu_percent = cpu_percent_usage()) != NULL){
50 printf("\033[2;2H%-12s : %6.2f", "User CPU", cpu_percent->user);
51 printf("\033[3;2H%-12s : %6.2f", "Kernel CPU", cpu_percent->kernel);
52 printf("\033[4;2H%-12s : %6.2f", "IOWait CPU", cpu_percent->iowait);
53 printf("\033[5;2H%-12s : %6.2f", "Swap CPU", cpu_percent->swap);
54 printf("\033[6;2H%-12s : %6.2f", "Nice CPU", cpu_percent->nice);
55 printf("\033[7;2H%-12s : %6.2f", "Idle CPU", cpu_percent->idle);
56 fflush(stdout);
57 sleep(delay);
58 }
59
60 exit(0);
61 }
62
63
64