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io_getevents() - Unix, Linux System Call
io_getevents - Read asynchronous I/O events from the completion queue
long io_getevents (aio_context_t ctx_id, long min_nr, long nr, struct io_event *events, struct timespec *timeout);
io_getevents() attempts to read at least min_nr events and
up to nr events from the completion queue of the AIO context
specified by ctx_id.
timeout specifies the amount of time to wait for events,
where a NULL timeout waits until at least min_nr events have been seen.
Note that timeout is relative and will be updated if not NULL
and the operation blocks.
io_getevents() returns the number of events read: 0 if no events are
available or < min_nr if the timeout has elapsed.
ctx_id is invalid. min_nr is out of range or nr is
out of range.
Either events or timeout is an invalid pointer.
io_getevents() is not implemented on this architecture.
io_getevents() is Linux specific and should not be used in programs that are intended to be portable.
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
io_setup(2), io_submit(2), io_getevents(2), io_cancel(2), io_destroy(2).
The asynchronous I/O system calls were written by Benjamin LaHaise.