loadavg.c

loadavg.c

#include<sys/sysinfo.h>
#include<stdio.h>

// NOTE: FSHIFT might differ

#define FSHIFT		16
#define FIXED_1		(1<<FSHIFT)	/* 1.0 as fixed-point */
#define LOAD_INT(x) ((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)

int main(){
    struct sysinfo info;
    sysinfo(&info);
    printf("%lu.%02lu\n", LOAD_INT(info.loads[0]), LOAD_FRAC(info.loads[0]));
    printf("%lu.%02lu\n", LOAD_INT(info.loads[1]), LOAD_FRAC(info.loads[1]));
    printf("%lu.%02lu\n", LOAD_INT(info.loads[2]), LOAD_FRAC(info.loads[2]));
}