#define _GNU_SOURCE
#include <stdio.h>
#include <sched.h>
#include <errno.h>
#include <unistd.h>

int main() {
    cpu_set_t my_set; 
    int pid = 1;
    int affinity = sched_getaffinity(pid, sizeof(cpu_set_t), &my_set);
    printf("cpuset of pid %d is %0.12x\n", pid, my_set);
    printf("cpuset of pid %d: ", pid);
    for (int i = 0; i < CPU_COUNT(&my_set); i++) {
        printf("%d", CPU_ISSET(i, &my_set) ? 1 : 0);
        if (i % 32 == 31) printf(" ");
    }
    printf("\n");
    printf("errno: %d\n", errno);
    return 0;
}