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.)

NOTE

One can achieve polling by using a non-NULL timeout that specifies a zero time interval.

CONFORMING TO

POSIX 1003.1-2003

SEE ALSO

aio_cancel(3), aio_error(3), aio_fsync(3), aio_read(3), aio_return(3), aio_write(3)