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17 lines · cpp
1#include <pthread.h>2int main() {3  cpu_set_t set;4  CPU_ZERO(&set);5  for (int i = 0; i < CPU_SETSIZE; ++i) {6    CPU_SET(i, &set);7    CPU_CLR(i, &set);8  }9  pthread_t self = pthread_self();10  int ret;11  ret = pthread_getaffinity_np(self, sizeof(set), &set);12  if (ret != 0) return ret;13  ret = pthread_setaffinity_np(self, sizeof(set), &set);14  if (ret != 0) return ret;15  return 0;16}17