AIO_SUSPEND(3) BSD Library Functions Manual AIO_SUSPEND(3)
NAME
aio_suspend -- suspend until asynchronous I/O operations or timeout complete (REALTIME)
LIBRARY
POSIX Real-time Library (librt, -lrt)
SYNOPSIS
#include <aio.h>
int
aio_suspend(const struct aiocb * const list[], int nent, const struct timespec * timeout);
DESCRIPTION
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
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.
RETURN VALUES
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 below.
ERRORS
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.
SEE ALSO
aio(3), timespec(3)
STANDARDS
The aio_suspend() system call is expected to conform to the IEEE Std 1003.1-2001 (``POSIX.1'') standard.
HISTORY
The aio_suspend() system call first appeared in NetBSD 5.0.
BSD
May 17, 2010 BSD
