AIO_SUSPEND(2) BSD System Calls Manual AIO_SUSPEND(2)NAMEaio_suspend — suspend until asynchronous I/O operations or timeout com‐
plete (REALTIME)
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <aio.h>
int
aio_suspend(const struct aiocb * const iocbs[], int niocb,
const struct timespec * timeout);
DESCRIPTION
The aio_suspend() function suspends the calling process until at least
one of the specified asynchronous I/O requests have completed, a signal
is delivered, or the timeout has passed.
iocbs is an array of niocb pointers to asynchronous I/O requests. Array
members containing NULL will be silently ignored.
If timeout is a non-nil pointer, it specifies a maximum interval to sus‐
pend. If timeout is a nil pointer, the suspend blocks indefinitely. To
effect a poll, the timeout should point to a zero-value timespec struc‐
ture.
RETURN VALUES
If one or more of the specified asynchronous I/O requests have completed,
aio_suspend() returns 0. Otherwise it returns -1 and sets errno to indi‐
cate the error, as enumerated below.
ERRORS
The aio_suspend() function will fail if:
[EAGAIN] the timeout expired before any I/O requests completed.
[EINVAL] iocbs contains more than AIO_LISTIO_MAX asynchronous
I/O requests, or at least one of the requests is not
valid.
[EINTR] the suspend was interrupted by a signal.
SEE ALSOaio_cancel(2), aio_error(2), aio_read(2), aio_suspend(2), aio_write(2)STANDARDSaio_suspend() is expected to conform to the IEEE Std 1003.2 (“POSIX.2”)
standard.
HISTORY
The aio_suspend function first appeared in FreeBSD 3.0.
AUTHORS
This manual page was written by Wes Peters ⟨wes@softweyr.com⟩.
BSD June 2, 1999 BSD
