Administrace komentářů

libstatgrab

/*                                  
 * i-scream libstatgrab             
 * 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 1.11 2005/09/24 13:29:22 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;
                }
        }
#ifdef WIN32
        delay = delay * 1000;
#endif

        /* 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 */
        sg_snapshot();
        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){
                sg_snapshot();
                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);
        }
        sg_shutdown();

        exit(0);
}