SCHED_FIFO
if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
if (policy < SCHED_FIFO || policy > SCHED_RR) {
if (policy < SCHED_FIFO || policy > SCHED_RR) {
CHECKr(pthread_attr_setschedpolicy(&attr, SCHED_FIFO));