content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.db.timing;
  
  import java.util.concurrent.CopyOnWriteArrayList;
  
  /**
   * Default profiling handler which only has a single instance and delegates method calls to its
   * registered child handlers.<p>
   */
  public class CmsDefaultProfilingHandler implements I_CmsProfilingHandler {
  
      /** The singleton instance. */
      public static final CmsDefaultProfilingHandler INSTANCE = new CmsDefaultProfilingHandler();
  
      /** The list of child handlers. */
      private CopyOnWriteArrayList<I_CmsProfilingHandler> m_handlers = new CopyOnWriteArrayList<>();
  
      /**
       * Hidden default constructor.<p>
       */
      protected CmsDefaultProfilingHandler() {
          // do nothing
      }
  
      /**
       * Adds a handler.<p>
       *
       * @param handler the handler to add
       */
      public void addHandler(I_CmsProfilingHandler handler) {
  
          m_handlers.add(handler);
      }
  
      /**
       * @see org.opencms.db.timing.I_CmsProfilingHandler#putTime(java.lang.String, long)
       */
      public void putTime(String key, long nanos) {
  
          for (I_CmsProfilingHandler handler : m_handlers) {
              handler.putTime(key, nanos);
          }
      }
  
      /**
       * Removes a handler.<p>
       *
       * @param handler the handler to remove
       */
      public void removeHandler(I_CmsProfilingHandler handler) {
  
          m_handlers.remove(handler);
      }
  
  }
  