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AIO_SUSPEND(3) Linux Programmer's Manual AIO_SUSPEND(3)
aio_suspend - wait for asynchronous I/O operation or timeout
#include <aio.h>
int aio_suspend(const struct aiocb * const aiocb_list[],
int nitems, const struct timespec *timeout);
Link with -lrt.
The aio_suspend() function suspends the calling thread until one of the
following occurs:
* One or more of the asynchronous I/O requests in the list aiocb_list has
completed.
* A signal is delivered.
* timeout is not NULL and the specified time interval has passed. (For
details of the timespec structure, see nanosleep(2).)
The nitems argument specifies the number of items in aiocb_list. Each item in
the list pointed to by aiocb_list must be either 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). (See aio(7) for a description of the aiocb
structure.)
If CLOCK_MONOTONIC is supported, this clock is used to measure the timeout
interval (see clock_gettime(3)).
If this function returns after completion of one of the I/O requests specified
in aiocb_list, 0 is returned. Otherwise, -1 is returned, and errno is set to
indicate the error.
EAGAIN The call timed out 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); see signal(7).
The aio_suspend() function is available since glibc 2.1.
POSIX.1-2001, POSIX.1-2008.
One can achieve polling by using a non-NULL timeout that specifies a zero time
interval.
If one or more of the asynchronous I/O operations specified in aiocb_list has
already completed at the time of the call to aio_suspend(), then the call
returns immediately.
To determine which I/O operations have completed after a successful return
from aio_suspend(), use aio_error(3) to scan the list of aiocb structures
pointed to by aiocb_list.
aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_return(3),
aio_write(3), lio_listio(3), aio(7), time(7)
This page is part of release 3.32 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be found
at http://www.kernel.org/doc/man-pages/.
2010-10-02 AIO_SUSPEND(3)
HTML rendering created 2010-12-03 by Michael Kerrisk, author of The Linux Programming Interface