Name
aio_suspend — wait for asynchronous I/O operation or
timeout
Synopsis
#include <aio.h>
int
aio_suspend( |
const struct aiocb * const
|
cblist, |
| |
int |
n, |
| |
const struct timespec
* |
timeout); |
DESCRIPTION
The aio_suspend() function
suspends the calling process until at least one of the
asynchronous I/O requests in the list cblist of length n have completed, a signal is
delivered, or timeout
is not NULL and the time interval it indicates has
passed.
Each item in the list must either be NULL (and then is
ignored), or a pointer to a control block on which I/O was
initiated using aio_read(3), aio_write(3), or
lio_listio(3).
If CLOCK_MONOTONIC is supported, this clock is used to
measure the timeout interval.
RETURN VALUE
If this function returns after completion of one of the
indicated requests, it returns 0. Otherwise it returns
−1 and sets errno
appropriately.
ERRORS
- EAGAIN
-
The call was ended by timeout, before any of the
indicated operations had completed.
- EINTR
-
The call was ended by signal. (Possibly the
completion signal of one of the operations we were
waiting for.)
CONFORMING TO
POSIX.1-2001
NOTES
One can achieve polling by using a non-NULL timeout that specifies a zero
time interval.
SEE ALSO
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_return(3), aio_write(3)
Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The GNU General Public License's references to "object code"
and "executables" are to be interpreted as the output of any
document formatting or typesetting system, including
intermediate and printed output.
This manual is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this manual; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
USA.
|
