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NetBSD 6.1.5 - man page for aio_suspend (netbsd section 3)

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AIO_SUSPEND(3)			   BSD Library Functions Manual 		   AIO_SUSPEND(3)

     aio_suspend -- suspend until asynchronous I/O operations or timeout complete (REALTIME)

     POSIX Real-time Library (librt, -lrt)

     #include <aio.h>

     aio_suspend(const struct aiocb * const list[], int nent, const struct timespec * timeout);

     The aio_suspend() system call suspends the calling process until at least one of the speci-
     fied asynchronous I/O requests have completed, a signal is delivered, or the struct timeout
     (see timespec(3)) has passed.

     The list argument is an array of nent 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.

     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

     The aio_suspend() system call will fail if:

     [EAGAIN]		The timeout expired before any I/O requests completed.

     [EINTR]		The suspend was interrupted by a signal.

     [EINVAL]		The list argument contains more than AIO_LISTIO_MAX asynchronous I/O
			requests, or at least one of the requests is not valid.

     aio(3), timespec(3)

     The aio_suspend() system call is expected to conform to the IEEE Std 1003.1-2001
     (``POSIX.1'') standard.

     The aio_suspend() system call first appeared in NetBSD 5.0.

BSD					   May 17, 2010 				      BSD
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