<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>io_service::add_service</title> <link rel="stylesheet" href="../../../boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> <link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> <link rel="up" href="../io_service.html" title="io_service"> <link rel="prev" href="../io_service.html" title="io_service"> <link rel="next" href="dispatch.html" title="io_service::dispatch"> </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.html"><img src="../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../io_service.html"><img src="../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="dispatch.html"><img src="../../../../../doc/html/images/next.png" alt="Next"></a> </div> <div class="section" title="io_service::add_service"> <div class="titlepage"><div><div><h4 class="title"> <a name="boost_asio.reference.io_service.add_service"></a><a class="link" href="add_service.html" title="io_service::add_service"> io_service::add_service</a> </h4></div></div></div> <p> <a class="indexterm" name="id943034"></a> Add a service object to the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a>. </p> <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> <span class="keyword">typename</span> <a class="link" href="../Service.html" title="Service requirements">Service</a><span class="special">></span> <span class="keyword">friend</span> <span class="keyword">void</span> <span class="identifier">add_service</span><span class="special">(</span> <span class="identifier">io_service</span> <span class="special">&</span> <span class="identifier">ios</span><span class="special">,</span> <span class="identifier">Service</span> <span class="special">*</span> <span class="identifier">svc</span><span class="special">);</span> </pre> <p> This function is used to add a service to the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a>. </p> <a name="boost_asio.reference.io_service.add_service.parameters"></a><h6> <a name="id943182"></a> <a class="link" href="add_service.html#boost_asio.reference.io_service.add_service.parameters">Parameters</a> </h6> <div class="variablelist"> <p class="title"><b></b></p> <dl> <dt><span class="term">ios</span></dt> <dd><p> The <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> object that owns the service. </p></dd> <dt><span class="term">svc</span></dt> <dd> <p> The service object. On success, ownership of the service object is transferred to the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a>. When the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> object is destroyed, it will destroy the service object by performing: </p> <pre class="programlisting"><span class="keyword">delete</span> <span class="keyword">static_cast</span><span class="special"><</span><span class="identifier">io_service</span><span class="special">::</span><span class="identifier">service</span><span class="special">*>(</span><span class="identifier">svc</span><span class="special">)</span> </pre> <p> </p> </dd> </dl> </div> <a name="boost_asio.reference.io_service.add_service.exceptions"></a><h6> <a name="id943331"></a> <a class="link" href="add_service.html#boost_asio.reference.io_service.add_service.exceptions">Exceptions</a> </h6> <div class="variablelist"> <p class="title"><b></b></p> <dl> <dt><span class="term">boost::asio::service_already_exists</span></dt> <dd><p> Thrown if a service of the given type is already present in the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a>. </p></dd> <dt><span class="term">boost::asio::invalid_service_owner</span></dt> <dd><p> Thrown if the service's owning <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> is not the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> object specified by the ios parameter. </p></dd> </dl> </div> <a name="boost_asio.reference.io_service.add_service.requirements"></a><h6> <a name="id943432"></a> <a class="link" href="add_service.html#boost_asio.reference.io_service.add_service.requirements">Requirements</a> </h6> <p> <span class="bold"><strong>Header: </strong></span><code class="literal">boost/asio/io_service.hpp</code> </p> <p> <span class="bold"><strong>Convenience header: </strong></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 - 2010 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.html"><img src="../../../../../doc/html/images/prev.png" alt="Prev"></a><a accesskey="u" href="../io_service.html"><img src="../../../../../doc/html/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/html/images/home.png" alt="Home"></a><a accesskey="n" href="dispatch.html"><img src="../../../../../doc/html/images/next.png" alt="Next"></a> </div> </body> </html>