Section: Linux Programmer's Manual (2)
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io_getevents - read asynchronous I/O events from the completion queue
int io_getevents(aio_context_t ctx_id, long min_nr, long nr,
struct io_event *events, struct timespec *timeout);
Link with -laio.
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.
returns the number of events read: 0 if no events are
available, or less than min_nr if the timeout has elapsed.
For the failure return, see NOTES.
Either events or timeout is an invalid pointer.
ctx_id is invalid.
min_nr is out of range or nr is
out of range.
Interrupted by a signal handler; see
is not implemented on this architecture.
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
is Linux-specific and should not be used in
programs that are intended to be portable.
Glibc does not provide a wrapper function for this system call.
The wrapper provided in
does not follow the usual C library conventions for indicating error:
on error it returns a negated error number
(the negative of one of the values listed in ERRORS).
If the system call is invoked via
then the return value follows the usual conventions for
indicating an error: -1, with
set to a (positive) value that indicates the error.
This page is part of release 3.27 of the Linux
A description of the project,
and information about reporting bugs,
can be found at
- RETURN VALUE
- CONFORMING TO
- SEE ALSO
This document was created by
using the manual pages.