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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.system_context"></a><a class="link" href="system_context.html" title="system_context">system_context</a>
</h3></div></div></div>
<p>
<a class="indexterm" name="boost_asio.indexterm.system_context"></a>
</p>
<p>
The executor context for the system executor.
</p>
<pre class="programlisting">class system_context :
public execution_context
</pre>
<h5>
<a name="boost_asio.reference.system_context.h0"></a>
<span class="phrase"><a name="boost_asio.reference.system_context.types"></a></span><a class="link" href="system_context.html#boost_asio.reference.system_context.types">Types</a>
</h5>
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Name
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Description
</p>
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<tr>
<td>
<p>
<a class="link" href="system_context/executor_type.html" title="system_context::executor_type"><span class="bold"><strong>executor_type</strong></span></a>
</p>
</td>
<td>
<p>
The executor type associated with the context.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/fork_event.html" title="system_context::fork_event"><span class="bold"><strong>fork_event</strong></span></a>
</p>
</td>
<td>
<p>
Fork-related event notifications.
</p>
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<h5>
<a name="boost_asio.reference.system_context.h1"></a>
<span class="phrase"><a name="boost_asio.reference.system_context.member_functions"></a></span><a class="link" href="system_context.html#boost_asio.reference.system_context.member_functions">Member Functions</a>
</h5>
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<p>
<a class="link" href="system_context/get_executor.html" title="system_context::get_executor"><span class="bold"><strong>get_executor</strong></span></a>
</p>
</td>
<td>
<p>
Obtain an executor for the context.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/join.html" title="system_context::join"><span class="bold"><strong>join</strong></span></a>
</p>
</td>
<td>
<p>
Join all threads in the system thread pool.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/notify_fork.html" title="system_context::notify_fork"><span class="bold"><strong>notify_fork</strong></span></a>
</p>
</td>
<td>
<p>
Notify the execution_context of a fork-related event.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/stop.html" title="system_context::stop"><span class="bold"><strong>stop</strong></span></a>
</p>
</td>
<td>
<p>
Signal all threads in the system thread pool to stop.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/stopped.html" title="system_context::stopped"><span class="bold"><strong>stopped</strong></span></a>
</p>
</td>
<td>
<p>
Determine whether the system thread pool has been stopped.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/_system_context.html" title="system_context::~system_context"><span class="bold"><strong>~system_context</strong></span></a> <span class="silver">[destructor]</span>
</p>
</td>
<td>
<p>
Destructor shuts down all threads in the system thread pool.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.system_context.h2"></a>
<span class="phrase"><a name="boost_asio.reference.system_context.protected_member_functions"></a></span><a class="link" href="system_context.html#boost_asio.reference.system_context.protected_member_functions">Protected
Member Functions</a>
</h5>
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<p>
<a class="link" href="system_context/destroy.html" title="system_context::destroy"><span class="bold"><strong>destroy</strong></span></a>
</p>
</td>
<td>
<p>
Destroys all services in the context.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/shutdown.html" title="system_context::shutdown"><span class="bold"><strong>shutdown</strong></span></a>
</p>
</td>
<td>
<p>
Shuts down all services in the context.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.system_context.h3"></a>
<span class="phrase"><a name="boost_asio.reference.system_context.friends"></a></span><a class="link" href="system_context.html#boost_asio.reference.system_context.friends">Friends</a>
</h5>
<div class="informaltable"><table class="table">
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<col>
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Name
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Description
</p>
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<td>
<p>
<a class="link" href="system_context/add_service.html" title="system_context::add_service"><span class="bold"><strong>add_service</strong></span></a>
</p>
</td>
<td>
<p>
(Deprecated: Use make_service().) Add a service object to the execution_context.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/has_service.html" title="system_context::has_service"><span class="bold"><strong>has_service</strong></span></a>
</p>
</td>
<td>
<p>
Determine if an execution_context contains a specified service
type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/make_service.html" title="system_context::make_service"><span class="bold"><strong>make_service</strong></span></a>
</p>
</td>
<td>
<p>
Creates a service object and adds it to the execution_context.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="system_context/use_service.html" title="system_context::use_service"><span class="bold"><strong>use_service</strong></span></a>
</p>
</td>
<td>
<p>
Obtain the service object corresponding to the given type.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.system_context.h4"></a>
<span class="phrase"><a name="boost_asio.reference.system_context.requirements"></a></span><a class="link" href="system_context.html#boost_asio.reference.system_context.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/system_context.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2021 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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