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12
13<h1>MPCallback</h1>
14
15<h2>Definition</h2>
16<dl><dd>
17<pre><code>
18#include &lt;revolution/mp.h&gt;
19
20typedef void (*MPCallback)( s32 result, <A href="./MPCallbackInfo.html">MPCallbackInfo</A> *info );
21</code></pre>
22</dd></dl>
23
24<h2>Arguments</h2>
25<p>
26<table border="1">
27  <tr>
28<td valign="top" width="120" bgcolor="#ffffe8"><code><strong><em>result</em></strong></code></td>
29    <td width="520">Returns the processing result value.</td>
30  </tr>
31  <tr>
32<td valign="top" width="120" bgcolor="#ffffe8"><code><strong><em>info</em></strong></code></td>
33<td width="520">Parameter passed to each type of callback.</td>
34  </tr>
35</table>
36</p>
37
38<h2>Return Values</h2>
39
40<P>None.</P>
41
42<H2>Description</H2>
43<p>
44<CODE>MPCallback</CODE> is the MP library's asynchronous function callback function type.
45</p>
46
47<p>
48Callback functions are called from the MP library's callback thread. <br> This is not an interrupt callback, so thread synchronizing functions can be called. However, if a block takes too long, it will impact MP communications. Blocking should be kept to the minimum needed for exceptions. <br>
49 In some cases you should consider the means to receive and pass data without blocking, using <CODE>OSMessageQueue</CODE>, etc.</p>
50
51<h2>See Also</h2>
52<p>
53<code><a href="./MPSendAsync.html">MPSendAsync()</a></code>, <code><a href="./MPUpdateBeaconAsync.html">MPUpdateBeaconAsync()</a></code>, <code><a href="./MPCallbackType.html">MPCallbackType</a></code>, <code><a href="./MPCallbackInfo.html">MPCallbackInfo</a></code>
54</p>
55
56<H2>Revision History</H2>
57<p>
582007/11/28 Initial version.
59</p>
60
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