gnals2/slot.hpp&gt;</a></span></dt>
<dt><span class="section"><a href="signals2/reference.html#header.boost.signals2.slot_base_hpp">Header &lt;boost/signals2/slot_base.hpp&gt;</a></span></dt>
<dt><span class="section"><a href="signals2/reference.html#header.boost.signals2.trackable_hpp">Header &lt;boost/signals2/trackable.hpp&gt;</a></span></dt>
</dl></dd>
<dt><span class="section"><a href="signals2/thread-safety.html">Thread-Safety</a></span></dt>
<dd><dl>
<dt><span class="section"><a href="signals2/thread