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<div class="titlepage"><div><div><h3 class="title">
<a name="asio.reference.associated_executor"></a><a class="link" href="associated_executor.html" title="associated_executor">associated_executor</a>
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<p>
Traits type used to obtain the executor associated with an object.
</p>
<pre class="programlisting">template&lt;
typename T,
typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a> = system_executor&gt;
struct associated_executor
</pre>
<h5>
<a name="asio.reference.associated_executor.h0"></a>
<span><a name="asio.reference.associated_executor.types"></a></span><a class="link" href="associated_executor.html#asio.reference.associated_executor.types">Types</a>
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Name
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Description
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<p>
<a class="link" href="associated_executor/type.html" title="associated_executor::type"><span class="bold"><strong>type</strong></span></a>
</p>
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<td>
<p>
If T has a nested type executor_type, T::executor_type. Otherwise
Executor.
</p>
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<h5>
<a name="asio.reference.associated_executor.h1"></a>
<span><a name="asio.reference.associated_executor.member_functions"></a></span><a class="link" href="associated_executor.html#asio.reference.associated_executor.member_functions">Member
Functions</a>
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Description
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<p>
<a class="link" href="associated_executor/get.html" title="associated_executor::get"><span class="bold"><strong>get</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
If T has a nested type executor_type, returns t.get_executor().
Otherwise returns ex.
</p>
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<p>
A program may specialise this traits type if the <code class="computeroutput">T</code> template
parameter in the specialisation is a user-defined type. The template parameter
<code class="computeroutput">Executor</code> shall be a type meeting the Executor requirements.
</p>
<p>
Specialisations shall meet the following requirements, where <code class="computeroutput">t</code>
is a const reference to an object of type <code class="computeroutput">T</code>, and <code class="computeroutput">e</code>
is an object of type <code class="computeroutput">Executor</code>.
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
Provide a nested typedef <code class="computeroutput">type</code> that identifies a type meeting
the Executor requirements.
</li>
<li class="listitem">
Provide a noexcept static member function named <code class="computeroutput">get</code>, callable
as <code class="computeroutput">get(t)</code> and with return type <code class="computeroutput">type</code>.
</li>
<li class="listitem">
Provide a noexcept static member function named <code class="computeroutput">get</code>, callable
as <code class="computeroutput">get(t,e)</code> and with return type <code class="computeroutput">type</code>.
</li>
</ul></div>
<h5>
<a name="asio.reference.associated_executor.h2"></a>
<span><a name="asio.reference.associated_executor.requirements"></a></span><a class="link" href="associated_executor.html#asio.reference.associated_executor.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/associated_executor.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2020 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>)
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