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