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io_getevents
Langue: en
Version: 2003-02-21 (openSuse - 09/10/07)
Section: 2 (Appels système)
NAME
io_getevents - read asynchronous I/O events from the completion queueSYNOPSIS
#include <linux/time.h> #include <libaio.h> int io_getevents(aio_context_t ctx_id, long min_nr, long nr, struct io_event *events, struct timespec *timeout); Link with -laio.
DESCRIPTION
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.
RETURN VALUE
On success, io_getevents() returns the number of events read: 0 if no events are available or < min_nr if the timeout has elapsed; on failure, it returns one of the errors listed under ERRORS.
ERRORS
- EINVAL
- ctx_id is invalid. min_nr is out of range or nr is out of range.
- EFAULT
- Either events or timeout is an invalid pointer.
- ENOSYS
- io_getevents() is not implemented on this architecture.
VERSIONS
The asynchronous I/O system calls first appeared in Linux 2.5, August 2002.
CONFORMING TO
io_getevents() is Linux specific and should not be used in programs that are intended to be portable.
SEE ALSO
io_setup(2), io_submit(2), io_getevents(2), io_cancel(2), io_destroy(2)
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