class="special">::</span><span class="identifier">default_mutex</span><span class="special">,</span> 
         <span class="keyword">unsigned</span> NextSize <span class="special">=</span> <span class="number">32</span><span class="special">,</span> <span class="keyword">unsigned</span> MaxSize <span class="special">=</span> <span class="number">0</span><span class="special">&gt;</span> 
<span class="keyword">class</span> <a class="link" href="pool_allocator.html" title="Class template pool_allocator">pool_