AIO_SUSPEND(2)						      BSD System Calls Manual						    AIO_SUSPEND(2)

NAME

     aio_suspend -- suspend until asynchronous I/O operations or timeout complete (REALTIME)

LIBRARY

     Standard C Library (libc, -lc)

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 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.

SEE ALSO

     aio_cancel(2), aio_error(2), aio_return(2), aio_write(2), aio(4)

STANDARDS

     The aio_suspend() system call is expected to conform to the IEEE Std 1003.1 (``POSIX.1'') standard.

HISTORY

     The aio_suspend() system call first appeared in FreeBSD 3.0.

AUTHORS

     This manual page was written by Wes Peters <wes@softweyr.com>.

BSD
								   June 2, 1999 							       BSD