4 class="title">
<a name="log.detailed.sink_frontends.unlocked"></a><a class="link" href="sink_frontends.html#log.detailed.sink_frontends.unlocked" title="Unlocked sink frontend">Unlocked sink
        frontend</a>
</h4></div></div></div>
<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><code class="computeroutput"><a class="link" href="../../sinks.html#header.boost.log.sinks.unlocked_frontend_hpp" title="Header &lt;boost/log/sinks/unlocked_frontend.hpp&