<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>io_service::work</title>
<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="../../boost_asio.html" title="Boost.Asio">
<link rel="up" href="../reference.html" title="Reference">
<link rel="prev" href="io_service__strand/_strand.html" title="io_service::strand::~strand">
<link rel="next" href="io_service__work/get_io_service.html" title="io_service::work::get_io_service">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../boost.png"></td>
<td align="center"><a href="../../../../index.html">Home</a></td>
<td align="center"><a href="../../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="io_service__strand/_strand.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="io_service__work/get_io_service.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.io_service__work"></a><a class="link" href="io_service__work.html" title="io_service::work">io_service::work</a>
</h3></div></div></div>
<p>
Class to inform the <a class="link" href="io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> when it has work to do.
</p>
<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">work</span>
</pre>
<h5>
<a name="boost_asio.reference.io_service__work.h0"></a>
<span class="phrase"><a name="boost_asio.reference.io_service__work.member_functions"></a></span><a class="link" href="io_service__work.html#boost_asio.reference.io_service__work.member_functions">Member Functions</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<a class="link" href="io_service__work/get_io_service.html" title="io_service::work::get_io_service"><span class="bold"><strong>get_io_service</strong></span></a>
</p>
</td>
<td>
<p>
Get the io_service associated with the work.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="io_service__work/work.html" title="io_service::work::work"><span class="bold"><strong>work</strong></span></a>
</p>
</td>
<td>
<p>
Constructor notifies the io_service that work is starting.
</p>
<p>
Copy constructor notifies the io_service that work is starting.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="io_service__work/_work.html" title="io_service::work::~work"><span class="bold"><strong>~work</strong></span></a>
</p>
</td>
<td>
<p>
Destructor notifies the io_service that the work is complete.
</p>
</td>
</tr>
</tbody>
</table></div>
<p>
The work class is used to inform the <a class="link" href="io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> when work starts and
finishes. This ensures that the <a class="link" href="io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> object's <code class="computeroutput"><span class="identifier">run</span><span class="special">()</span></code> function
will not exit while work is underway, and that it does exit when there is
no unfinished work remaining.
</p>
<p>
The work class is copy-constructible so that it may be used as a data member
in a handler class. It is not assignable.
</p>
<h5>
<a name="boost_asio.reference.io_service__work.h1"></a>
<span class="phrase"><a name="boost_asio.reference.io_service__work.requirements"></a></span><a class="link" href="io_service__work.html#boost_asio.reference.io_service__work.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/io_service.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
</p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright © 2003-2015 Christopher M.
Kohlhoff<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="io_service__strand/_strand.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../boost_asio.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="io_service__work/get_io_service.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
</div>
</body>
</html>
