int io_queue_wait(io_context_t ctx_id, const struct timespec *timeout);
DESCRIPTIONAttempts to read an event from the completion queue for the aio_context specified by ctx_id.
RETURN VALUESMay return 0 if no events are available and the timeout specified by when has elapsed, where when == NULL specifies an infinite timeout. Note that the timeout pointed to by when is relative and will be updated if not NULL and the operation blocks. Will fail with -ENOSYS if not implemented.
RETURN VALUESOn success, io_queue_wait returns 0. Otherwise, -error is return, where error is one of the Exxx values defined in the Errors section.
- iocbs referenced data outside of the program's accessible address space.
- ctx_id refers to an uninitialized aio context, the iocb pointed to by iocbs contains an improperly initialized iocb.
- Not implemented.