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AIO_SUSPEND(2) | System Calls Manual | AIO_SUSPEND(2) |
NAME¶
aio_suspend
—
suspend until asynchronous I/O operations or timeout
complete (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¶
Theaio_suspend
() system call 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.
The iocbs argument is an array of
niocb pointers to asynchronous I/O requests.
Array members containing null pointers will be silently ignored.
If timeout is not a null pointer, it specifies
a maximum interval to suspend. If timeout is
a null pointer, the suspend blocks indefinitely. To effect a poll, the
timeout should point to a zero-value timespec
structure.
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 indicate the
error, as enumerated below.
ERRORS¶
Theaio_suspend
() system call will fail if:
- [
EAGAIN
] - the timeout expired before any I/O requests completed.
- [
EINVAL
] - The iocbs argument 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 ALSO¶
aio_cancel(2), aio_error(2), aio_return(2), aio_waitcomplete(2), aio_write(2), aio(4)STANDARDS¶
Theaio_suspend
() system call is expected to
conform to the IEEE Std 1003.1
(“POSIX.1”) standard.
HISTORY¶
Theaio_suspend
() system call first appeared
in FreeBSD 3.0.
AUTHORS¶
This manual page was written by Wes Peters ⟨wes@softweyr.com⟩.June 2, 1999 | Debian |