an><span class="special">&gt;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">typename</span> Mutex <span class="special">=</span> <a class="link" href="mutex.html" title="Class mutex">boost::signals2::mutex</a></pre></li>
</ol></div>
</div>
<div class="refsect2">
<a name="id-1.3.37.6.10.3.4.4"></a><h3>
<a name="boost.signals2.signaltypes"></a><code class="computeroutput">signal</code> 
        public
       types</h3>
<div class="orderedlist"><ol class="orderedlist" 