// If pid is 0 the calling thread is used.
func SchedGetaffinity(pid int, set *CPUSet) error {
	return schedAffinity(SYS_SCHED_GETAFFINITY, pid, set)
}

// SchedSetaffinity sets the CPU affinity mask of the thread specified by pid.
// If pid is 0 the calling thread is used.
func SchedSetaffinity(pid int, set *CPUSet) error {
	return schedAffinity(SYS_SCHED_SETAFFINITY, pid, set)
}

// Zero clears the set s, so that it contains no CPUs.