1<h2>io_done_queue_create</h2>
2<hr>
3<p>
4<strong>Function</strong> - Create an <strong>io_done_queue</strong> kernel object.
5<h3>SYNOPSIS</h3>
6<pre>
7<strong>kern_return_t   io_done_queue_create</strong>
8                <strong>(mach_port_t</strong>                               <var>host</var>,
9                 <strong>mach_port_t</strong>                               <var>queue</var><strong>);</strong>
10</pre>
11<h3>PARAMETERS</h3>
12<dl>
13<p>
14<dt> <var>host</var>
15<dd>
16[in host-name send right] The name (or control) port for the host on 
17which the io_done_queue should be created.
18<p>
19<dt> <var>queue</var>
20<dd>
21[out io-done-queue send right] The port referencing the created
22io_done_queue.
23</dl>
24<h3>DESCRIPTION</h3>
25<p>
26The io_done_queue_create function is called to create a new
27instatiation of the kernel object supporting asynchronous read/write
28operations on a device.
29<h3>RETURN VALUES</h3>
30<dl>
31<dt> <strong>KERN_INVALID_ARGUMENT</strong>
32<dd>
33     Invalid <var>host</var> parameter.
34     <p>
35     <dt> <strong>KERN_RESOURCE_SHORTAGE</strong>
36<dd>
37     Insufficient kernel resources to allocate kernel object.
38</dl>
39<h3>RELATED INFORMATION</h3>
40<p>
41Functions:
42<a href="io_done_queue_terminate.html"><strong>io_done_queue_terminate</strong></a>,
43<a href="io_done_queue_wait.html"><strong>io_done_queue_wait</strong></a>,
44<a href="device_read_async.html"><strong>device_read_async</strong></a>,
45<a href="device_read_async_inband.html"><strong>device_read_async_inband</strong></a>,
46<a href="DR_overwrite_async.html"><strong>device_read_overwrite_async</strong></a>,
47<a href="device_write_async.html"><strong>device_write_async</strong></a>,
48<a href="device_write_async_inband.html"><strong>device_write_async_inband</strong></a>.
49