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root/i-scream/projects/libstatgrab/examples/cpu_usage.c
Revision: 1.6
Committed: Fri Jan 16 15:54:52 2004 UTC (20 years, 9 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.

File Contents

# 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     */
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 tdb 1.4
28 pajs 1.1 extern char *optarg;
29 tdb 1.4 extern int optind;
30     int c;
31 pajs 1.1
32     int delay = 1;
33     cpu_percent_t *cpu_percent;
34    
35 ats 1.3 while ((c = getopt(argc, argv, "d:")) != -1){
36 tdb 1.4 switch (c){
37     case 'd':
38     delay = atoi(optarg);
39     break;
40 pajs 1.1 }
41     }
42    
43 tdb 1.4 /* Initialise statgrab */
44     statgrab_init();
45    
46 tdb 1.5 /* Drop setuid/setgid privileges. */
47     if (statgrab_drop_privileges() != 0) {
48     perror("Error. Failed to drop privileges");
49     return 1;
50     }
51    
52 tdb 1.4 /* Throw away the first reading as thats averaged over the machines uptime */
53     cpu_percent = cpu_percent_usage();
54    
55     /* Clear the screen ready for display the cpu usage */
56     printf("\033[2J");
57 pajs 1.1
58     while( (cpu_percent = cpu_percent_usage()) != NULL){
59     printf("\033[2;2H%-12s : %6.2f", "User CPU", cpu_percent->user);
60     printf("\033[3;2H%-12s : %6.2f", "Kernel CPU", cpu_percent->kernel);
61     printf("\033[4;2H%-12s : %6.2f", "IOWait CPU", cpu_percent->iowait);
62     printf("\033[5;2H%-12s : %6.2f", "Swap CPU", cpu_percent->swap);
63     printf("\033[6;2H%-12s : %6.2f", "Nice CPU", cpu_percent->nice);
64     printf("\033[7;2H%-12s : %6.2f", "Idle CPU", cpu_percent->idle);
65     fflush(stdout);
66     sleep(delay);
67     }
68    
69     exit(0);
70     }