futex_lock_pi_atomic (9) Linux Manual Page
futex_lock_pi_atomic – Atomic work required to acquire a pi aware futex
Synopsis
int futex_lock_pi_atomic(u32 __user *uaddr, struct futex_hash_bucket *hb, union futex_key *key, struct futex_pi_state **ps, struct task_struct *task, int set_waiters);Arguments
uaddr
-
- the pi futex user address
hb
- the pi futex hash bucket
key
- the futex key associated with uaddr and hb
ps
- the pi_state pointer where we store the result of the lookup
task
- the task to perform the atomic lock work for. This will be “current” except in the case of requeue pi.
set_waiters
- force setting the FUTEX_WAITERS bit (1) or not (0)
Return
0 – ready to wait; 1 – acquired the lock; <0 – error
The hb->lock and futex_key refs shall be held by the caller.
Author
Rusty Russell <rusty [at] rustcorp.com.au>
- Author.