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<div class="titlepage"><div><div><h4 class="title">
<a name="asio.reference.io_context.run_for"></a><a class="link" href="run_for.html" title="io_context::run_for">io_context::run_for</a>
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<p>
<a class="indexterm" name="asio.indexterm.io_context.run_for"></a>
Run the <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a>
object's event processing loop for a specified duration.
</p>
<pre class="programlisting">template<
typename Rep,
typename Period>
std::size_t run_for(
const chrono::duration< Rep, Period > & rel_time);
</pre>
<p>
The <code class="computeroutput">run_for()</code> function blocks until all work has finished
and there are no more handlers to be dispatched, until the <a class="link" href="../io_context.html" title="io_context"><code class="computeroutput">io_context</code></a>
has been stopped, or until the specified duration has elapsed.
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<h6>
<a name="asio.reference.io_context.run_for.h0"></a>
<span><a name="asio.reference.io_context.run_for.parameters"></a></span><a class="link" href="run_for.html#asio.reference.io_context.run_for.parameters">Parameters</a>
</h6>
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<p class="title"><b></b></p>
<dl>
<dt><span class="term">rel_time</span></dt>
<dd><p>
The duration for which the call may block.
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<h6>
<a name="asio.reference.io_context.run_for.h1"></a>
<span><a name="asio.reference.io_context.run_for.return_value"></a></span><a class="link" href="run_for.html#asio.reference.io_context.run_for.return_value">Return
Value</a>
</h6>
<p>
The number of handlers that were executed.
</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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