dentifier">segment_manager</span><span class="special">::</span><span class="identifier">difference_type</span>                                                      <a name="boost.interprocess.allocator.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">interprocess</span><span class="special">::</span><span class="identifier">ver