man/tip/nng_aio_wait.3.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

---
version: tip
layout: manpage_v2
title: nng_aio_wait(3)
---
<h1>nng_aio_wait(3)</h1>
<div class="sect1">
<h2 id="_name">NAME</h2>
<div class="sectionbody">
<div class="paragraph">
<p>nng_aio_wait - wait for asynchronous I/O operation</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="listingblock">
<div class="content">
<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span><span class="tok-w"> </span><span class="tok-cpf">&lt;nng/nng.h&gt;</span>

<span class="tok-kt">void</span><span class="tok-w"> </span><span class="tok-nf">nng_aio_wait</span><span class="tok-p">(</span><span class="tok-n">nng_aio</span><span class="tok-w"> </span><span class="tok-o">*</span><span class="tok-n">aio</span><span class="tok-p">);</span></code></pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The <code>nng_aio_wait()</code> function waits for an asynchronous I/O operation
to complete.
If the operation has not been started, or has already
completed, then it returns immediately.</p>
</div>
<div class="paragraph">
<p>If a callback was set with <em>aio</em> when it was allocated, then this
function will not be called until the callback has completed.</p>
</div>
<div class="admonitionblock important">
<table>
<tr>
<td class="icon">
<i class="fa icon-important" title="Important"></i>
</td>
<td class="content">
This function should never be called from a function that itself
is a callback of an <a href="nng_aio.5.html"><code>aio</code></a>, either this one or any other.
Doing so may result in a deadlock.
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_return_values">RETURN VALUES</h2>
<div class="sectionbody">
<div class="paragraph">
<p>None.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_errors">ERRORS</h2>
<div class="sectionbody">
<div class="paragraph">
<p>None.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph text-left">
<p><a href="nng_aio_abort.3.html">nng_aio_abort(3)</a>,
<a href="nng_aio_alloc.3.html">nng_aio_alloc(3)</a>,
<a href="nng_aio_busy.3.html">nng_aio_busy(3)</a>,
<a href="nng_aio.5.html">nng_aio(5)</a>,
<a href="nng.7.html">nng(7)</a></p>
</div>
</div>
</div>