Function bindThreadToCpu

runtime/Perf.cc:63–69

* Ask the operating system to pin the current thread to a given CPU. * * \param cpu * Indicates the desired CPU and hyperthread; low order 2 bits * specify CPU, next bit specifies hyperthread. */

 *      specify CPU, next bit specifies hyperthread.
 */
void bindThreadToCpu(int cpu)
{
    cpu_set_t set;
    CPU_ZERO(&set);
    CPU_SET(cpu, &set);
    sched_setaffinity((pid_t)syscall(SYS_gettid), sizeof(set), &set);
}

/*
 * This function just discards its argument. It's used to make it