GNU/Linux man pages
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GNU/Linux |
CentOS 4.8 |
i386 |
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io_getevents(2) |
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io_getevents − Read asynchronous I/O events from the completion queue
#include <linux/time.h>
#include <libaio.h>
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extern int io_getevents (io_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.
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EINVAL |
ctx_id is invalid. min_nr is out of range or nr is out of range. | ||
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EFAULT |
Either events or timeout is an invalid pointer. | ||
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ENOSYS |
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.
Kent Yoder.
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io_getevents(2) | |