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
list[], int nent, const struct
timespec *timeout);
DESCRIPTION
The
aio_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 list argument is an array of nent 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 suspend. If timeout is a nil 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
The aio_suspend() system call will fail
if:
- [
EAGAIN] - The timeout expired before any of the listed I/O requests completed.
- [
EINTR] - The suspend was interrupted by a signal.
- [
EINVAL] - The list argument contains more than
AIO_LISTIO_MAXasynchronous I/O requests, or at least one of the requests is not valid.
SEE ALSO
aio_cancel(2), aio_error(2), aio_return(2), aio_write(2), aio(4)
STANDARDS
The aio_suspend() system call is expected
to conform to the IEEE Std 1003.1
(“POSIX.1”) standard.
HISTORY
The aio_suspend() system call first
appeared in FreeBSD 3.0.
AUTHORS
This manual page was written by Wes Peters ⟨wes@softweyr.com⟩.