an class="special">::</span><span class="identifier">exclusive_lock_guard</span><span class="special">&lt;</span> <span class="identifier">MutexT</span> <span class="special">&gt;</span><span class="special">&gt;</span> <span class="special">:</span>
  <span class="keyword">public</span> <span class="identifier">mpl</span><span class="special">::</span><span class="identifier">integral_c</span><span class="special">&lt;</span> <span class="identifier">lock_access_mode</span><span class="special">,</span> <s