1FUTEX_WAIT 2FUTEX_WAKE 3FUTEX_FD 4FUTEX_REQUEUE 5FUTEX_CMP_REQUEUE 6FUTEX_WAKE_OP 7FUTEX_LOCK_PI 8FUTEX_UNLOCK_PI 9FUTEX_TRYLOCK_PI 10FUTEX_WAIT_BITSET 11FUTEX_WAKE_BITSET 12FUTEX_WAIT_REQUEUE_PI 13FUTEX_CMP_REQUEUE_PI 14FUTEX_WAIT_PRIVATE 15FUTEX_WAKE_PRIVATE 16FUTEX_FD|FUTEX_PRIVATE_FLAG 17FUTEX_REQUEUE_PRIVATE 18FUTEX_CMP_REQUEUE_PRIVATE 19FUTEX_WAKE_OP_PRIVATE 20FUTEX_LOCK_PI_PRIVATE 21FUTEX_UNLOCK_PI_PRIVATE 22FUTEX_TRYLOCK_PI_PRIVATE 23FUTEX_WAIT_BITSET_PRIVATE 24FUTEX_WAKE_BITSET_PRIVATE 25FUTEX_WAIT_REQUEUE_PI_PRIVATE 26FUTEX_CMP_REQUEUE_PI_PRIVATE 27FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME 28FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME 29FUTEX_WAIT_REQUEUE_PI|FUTEX_CLOCK_REALTIME 30FUTEX_WAIT_REQUEUE_PI_PRIVATE|FUTEX_CLOCK_REALTIME 31