|AIO_SUSPEND(2)||FreeBSD System Calls Manual||AIO_SUSPEND(2)|
NAMEaio_suspend — suspend until asynchronous I/O operations or timeout complete (REALTIME)
LIBRARYStandard C Library (libc, -lc)
SYNOPSIS#include < aio.h>
aio_suspend( const struct aiocb *const iocbs, int niocb, const struct timespec *timeout);
DESCRIPTIONThe 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 iocbs argument is an array of niocb 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 VALUESIf 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.
ERRORSThe aio_suspend() system call will fail if:
- [ EAGAIN]
- the timeout expired before any I/O requests completed.
- [ EINVAL]
- The iocbs argument contains more than AIO_LISTIO_MAX asynchronous I/O requests, or at least one of the requests is not valid.
- [ EINTR]
- the suspend was interrupted by a signal.
STANDARDSThe aio_suspend() system call is expected to conform to the IEEE Std 1003.1 (“POSIX.1”) standard.
HISTORYThe aio_suspend() system call first appeared in FreeBSD 3.0.
AUTHORSThis manual page was written by <email@example.com>.
|June 2, 1999||FreeBSD|