xref: /xnu-12377.41.6/osfmk/man/io_done_queue_create.html (revision bbb1b6f9e71b8cdde6e5cd6f4841f207dee3d828)
1*bbb1b6f9SApple OSS Distributions<h2>io_done_queue_create</h2>
2*bbb1b6f9SApple OSS Distributions<hr>
3*bbb1b6f9SApple OSS Distributions<p>
4*bbb1b6f9SApple OSS Distributions<strong>Function</strong> - Create an <strong>io_done_queue</strong> kernel object.
5*bbb1b6f9SApple OSS Distributions<h3>SYNOPSIS</h3>
6*bbb1b6f9SApple OSS Distributions<pre>
7*bbb1b6f9SApple OSS Distributions<strong>kern_return_t   io_done_queue_create</strong>
8*bbb1b6f9SApple OSS Distributions                <strong>(mach_port_t</strong>                               <var>host</var>,
9*bbb1b6f9SApple OSS Distributions                 <strong>mach_port_t</strong>                               <var>queue</var><strong>);</strong>
10*bbb1b6f9SApple OSS Distributions</pre>
11*bbb1b6f9SApple OSS Distributions<h3>PARAMETERS</h3>
12*bbb1b6f9SApple OSS Distributions<dl>
13*bbb1b6f9SApple OSS Distributions<p>
14*bbb1b6f9SApple OSS Distributions<dt> <var>host</var>
15*bbb1b6f9SApple OSS Distributions<dd>
16*bbb1b6f9SApple OSS Distributions[in host-name send right] The name (or control) port for the host on
17*bbb1b6f9SApple OSS Distributionswhich the io_done_queue should be created.
18*bbb1b6f9SApple OSS Distributions<p>
19*bbb1b6f9SApple OSS Distributions<dt> <var>queue</var>
20*bbb1b6f9SApple OSS Distributions<dd>
21*bbb1b6f9SApple OSS Distributions[out io-done-queue send right] The port referencing the created
22*bbb1b6f9SApple OSS Distributionsio_done_queue.
23*bbb1b6f9SApple OSS Distributions</dl>
24*bbb1b6f9SApple OSS Distributions<h3>DESCRIPTION</h3>
25*bbb1b6f9SApple OSS Distributions<p>
26*bbb1b6f9SApple OSS DistributionsThe io_done_queue_create function is called to create a new
27*bbb1b6f9SApple OSS Distributionsinstatiation of the kernel object supporting asynchronous read/write
28*bbb1b6f9SApple OSS Distributionsoperations on a device.
29*bbb1b6f9SApple OSS Distributions<h3>RETURN VALUES</h3>
30*bbb1b6f9SApple OSS Distributions<dl>
31*bbb1b6f9SApple OSS Distributions<dt> <strong>KERN_INVALID_ARGUMENT</strong>
32*bbb1b6f9SApple OSS Distributions<dd>
33*bbb1b6f9SApple OSS Distributions     Invalid <var>host</var> parameter.
34*bbb1b6f9SApple OSS Distributions     <p>
35*bbb1b6f9SApple OSS Distributions     <dt> <strong>KERN_RESOURCE_SHORTAGE</strong>
36*bbb1b6f9SApple OSS Distributions<dd>
37*bbb1b6f9SApple OSS Distributions     Insufficient kernel resources to allocate kernel object.
38*bbb1b6f9SApple OSS Distributions</dl>
39*bbb1b6f9SApple OSS Distributions<h3>RELATED INFORMATION</h3>
40*bbb1b6f9SApple OSS Distributions<p>
41*bbb1b6f9SApple OSS DistributionsFunctions:
42*bbb1b6f9SApple OSS Distributions<a href="io_done_queue_terminate.html"><strong>io_done_queue_terminate</strong></a>,
43*bbb1b6f9SApple OSS Distributions<a href="io_done_queue_wait.html"><strong>io_done_queue_wait</strong></a>,
44*bbb1b6f9SApple OSS Distributions<a href="device_read_async.html"><strong>device_read_async</strong></a>,
45*bbb1b6f9SApple OSS Distributions<a href="device_read_async_inband.html"><strong>device_read_async_inband</strong></a>,
46*bbb1b6f9SApple OSS Distributions<a href="DR_overwrite_async.html"><strong>device_read_overwrite_async</strong></a>,
47*bbb1b6f9SApple OSS Distributions<a href="device_write_async.html"><strong>device_write_async</strong></a>,
48*bbb1b6f9SApple OSS Distributions<a href="device_write_async_inband.html"><strong>device_write_async_inband</strong></a>.
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