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aquafire / test_cpu_affinity.c

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test_cpu_affinity.c Raw
1#define _GNU_SOURCE
2#include <stdio.h>
3#include <sched.h>
4#include <errno.h>
5#include <unistd.h>
6
7int main() {
8 cpu_set_t my_set;
9 int pid = 1;
10 int affinity = sched_getaffinity(pid, sizeof(cpu_set_t), &my_set);
11 printf("cpuset of pid %d is %0.12x\n", pid, my_set);
12 printf("cpuset of pid %d: ", pid);
13 for (int i = 0; i < CPU_COUNT(&my_set); i++) {
14 printf("%d", CPU_ISSET(i, &my_set) ? 1 : 0);
15 if (i % 32 == 31) printf(" ");
16 }
17 printf("\n");
18 printf("errno: %d\n", errno);
19 return 0;
20}