ual to <code>threshold</code>.</p>
      </td></tr></table>

  </div></div>

</div><h3 id="Semaphore_Valve">Semaphore Valve</h3><div class="text">

  <div class="subsection"><h4 id="Semaphore_Valve/Introduction">Introduction</h4><div class="text">

    <p>The <strong>Semaphore Valve</strong> is able to limit the number of
    concurrent request processing threads.</p>
    <p><strong>org.apache.catalina.valves.SemaphoreValve</strong> provides
    methods which may be overridden by a subclass to customize beh