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eventfd_ctx_remove_wait_queue(9) - phpMan

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EVENTFD_CTX_REMOVE_W(9)           Events based on file descripto          EVENTFD_CTX_REMOVE_W(9)



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
       Returns 0 if successful, or the following error codes:

       -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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   EVENTFD_CTX_REMOVE_W(9)


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