</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">segment_manager</span> <a name="boost.interprocess.adaptive_pool.segment_manager"></a><span class="identifier">segment_manager</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">segment_manager</span><span class="special">::</span><span class="identifier">void_poin