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.Dd June 2, 1999
.Dt AIO_SUSPEND 2
.Os
.Sh NAME
.Nm aio_suspend
.Nd suspend until asynchronous I/O operations or timeout complete (REALTIME)
.Sh SYNOPSIS
.Fd #include <aio.h>
.Ft int
.Fn aio_suspend "const struct aiocb * const iocbs[]" "int niocb" "const struct timespec * timeout"
.Sh DESCRIPTION
The
.Fn aio_suspend
function suspends the calling process until all of the specified
asynchronous I/O requests have completed or the
.Ar timeout
has passed.
.Ar iocbs
is an array of 
.Ar niocb
pointers to asynchronous I/O requests.  Array members containing NULL
will be silently ignored.
.Sh RETURN VALUES
If all of the specified asynchronous I/O requests have completed, 
.Fn aio_suspend
returns 0. If the 
.Ar timeout
expired,
.Dv EAGAIN
is returned.  Other return values indicate an error condition as
detailed below.
.Sh SEE ALSO
.Xr aio_cancel 2 ,
.Xr aio_error 2 ,
.Xr aio_read 2 ,
.Xr aio_suspend 2 ,
.Xr aio_write 2 .
.Sh ERRORS
The
.Fn aio_suspend
function will fail if:
.Bl -tag -width Er
.It Bq Er EINVAL
.Ar iocbs
contains more than
.Dv AIO_LISTIO_MAX asynchronous I/O requests, or at least one 
of the requests is not valid.
.It Bq Er EINTR
the suspend was interrupted by a signal.
.El
.Sh STANDARDS
.Fn aio_suspend
is expected to conform to the
.St -p1003.2
standard.
.Sh HISTORY
The
.Nm
function first appeared in
.Fx 3.0 .
.Sh AUTHORS
This
manual page was written by
.An Wes Peters Aq wes@softweyr.com .