DD2-monitor/core/sysmetrics.c

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2019-01-29 02:57:45 +11:00
/*
* core/sysmetrics.c
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "sysmetrics.h"
extern 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;
}
/* --------------------------------------------------------------- */