output"><span class="identifier">io_service</span></code></a> object's event processing
          loop.
        </p>
<pre class="programlisting"><span class="keyword">void</span> <span class="identifier">stop</span><span class="special">();</span>
</pre>
<p>
          This function does not block, but instead simply signals the <a class="link" href="../io_service.html" title="io_service"><code class="computeroutput"><span class="identifier">io_service</span></code></a> to stop. All invocations
          of 