eventfd_ctx_remove_wait_queue (9) - Linux Manuals
eventfd_ctx_remove_wait_queue: Read the current counter and removes wait queue.
NAME
eventfd_ctx_remove_wait_queue - Read the current counter and removes wait queue.
SYNOPSIS
-
int eventfd_ctx_remove_wait_queue(struct eventfd_ctx
* ctx, wait_queue_t* wait, __u64* cnt);
ARGUMENTS
ctx
- [in] Pointer to eventfd context.
wait
- [in] Wait queue to be removed.
cnt
- [out] Pointer to the 64-bit counter value.
DESCRIPTION
-EAGAIN : The operation would have blocked.
This is used to atomically remove a wait queue entry from the eventfd wait queue head, and read/reset the counter value.
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