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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)
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.
The aio_suspend() system call is expected to conform to the IEEE Std 1003.1-2001
The aio_suspend() system call first appeared in NetBSD 5.0.
BSD May 17, 2010 BSD
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