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root/i-scream/projects/libstatgrab/examples/cpu_usage.c
Revision: 1.7
Committed: Mon Jan 19 16:49:19 2004 UTC (20 years, 9 months ago) by tdb
Content type: text/plain
Branch: MAIN
CVS Tags: LIBSTATGRAB_0_9, LIBSTATGRAB_0_8_2, LIBSTATGRAB_0_8_1
Changes since 1.6: +2 -0 lines
Log Message:
A whole bunch of minor cosmetic changes.

File Contents

# 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 * $Id$
21 */
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
30 extern char *optarg;
31 extern int optind;
32 int c;
33
34 int delay = 1;
35 cpu_percent_t *cpu_percent;
36
37 while ((c = getopt(argc, argv, "d:")) != -1){
38 switch (c){
39 case 'd':
40 delay = atoi(optarg);
41 break;
42 }
43 }
44
45 /* Initialise statgrab */
46 statgrab_init();
47
48 /* Drop setuid/setgid privileges. */
49 if (statgrab_drop_privileges() != 0) {
50 perror("Error. Failed to drop privileges");
51 return 1;
52 }
53
54 /* Throw away the first reading as thats averaged over the machines uptime */
55 cpu_percent = cpu_percent_usage();
56
57 /* Clear the screen ready for display the cpu usage */
58 printf("\033[2J");
59
60 while( (cpu_percent = cpu_percent_usage()) != NULL){
61 printf("\033[2;2H%-12s : %6.2f", "User CPU", cpu_percent->user);
62 printf("\033[3;2H%-12s : %6.2f", "Kernel CPU", cpu_percent->kernel);
63 printf("\033[4;2H%-12s : %6.2f", "IOWait CPU", cpu_percent->iowait);
64 printf("\033[5;2H%-12s : %6.2f", "Swap CPU", cpu_percent->swap);
65 printf("\033[6;2H%-12s : %6.2f", "Nice CPU", cpu_percent->nice);
66 printf("\033[7;2H%-12s : %6.2f", "Idle CPU", cpu_percent->idle);
67 fflush(stdout);
68 sleep(delay);
69 }
70
71 exit(0);
72 }