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AIO_SUSPEND(3) NetBSD Library Functions Manual AIO_SUSPEND(3)
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aio_suspend -- suspend until asynchronous I/O operations or timeout com-
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 specified 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
If timeout is not a NULL pointer, it specifies a maximum interval to sus-
pend. If timeout is a NULL pointer, the suspend blocks indefinitely. To
effect a poll, the timeout should point to a zero-value timespec struc-
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 indi-
cate the error, as enumerated below.
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 (``POSIX.1'') standard.
The aio_suspend() system call first appeared in NetBSD 5.0.
NetBSD 9.1 May 17, 2010 NetBSD 9.1