aio_suspend2
Suspend until asynchronous i/o operations or timeout complete (realtime)
Usage
#include <aio.h>
int
aio_suspend(const struct aiocb *const list[], int nent, const struct timespec *timeout);
Library
Standard C Library (libc, -lc)
Overview
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 timeout has passed.
The list argument is an array of nent pointers to asynchronous I/O requests. Array members containing NULL will be silently ignored.
If timeout is a non-nil pointer, it specifies a maximum interval to suspend. If timeout is a nil 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 of the listed 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.
Releases
128 releases since Mac OS X 10.4; the text changed 1 time.