DD2-monitor/essai.c

/*
 *		essai.c
 */

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

#include  "core/utils.h"

int	verbosity;

/* --------------------------------------------------------------- */

int get_loadavg(double *where)
{
FILE		*fp;
double		loads[3];
int		foo;

if ( ! (fp=fopen("/proc/loadavg", "r")) ) {
	perror("read loadavg");
	return -1;
	}

foo = fscanf(fp, "%lf %lf %lf", loads, loads+1, loads+2);
if (3 != foo) fprintf(stderr, "%s : read %d vals\n", __func__, foo);

memcpy(where, loads, 3 * sizeof(double));

fclose(fp);

return 0;	
}

/* --------------------------------------------------------------- */

int main(int argc, char *argv[])
{
int		opt, foo;
double		loads[3];

while ((opt = getopt(argc, argv, "v")) != -1) {
	switch (opt) {
		case 'v':	verbosity++;		break;
		default:				break;
		}
	}

foo = get_loadavg(loads);
if (foo) fprintf(stderr, "get loadavg -> %d\n", foo);

printf("%f %f %f %f\n", dtime(), loads[0], loads[1], loads[2]);

return 0;
}

/* --------------------------------------------------------------- */