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   * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
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   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
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   *
   * This code 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 General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
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   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
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  package sun.jvmstat.perfdata.monitor;
  
  import sun.jvmstat.monitor.*;
  import java.nio.LongBuffer;
  
  /**
   * Class for monitoring a PerfData Long instrument.
   *
   * @author Brian Doherty
   * @since 1.5
   */
  public class PerfLongMonitor extends AbstractMonitor implements LongMonitor {
  
      /**
       * The buffer containing the data for the long instrument.
       */
      LongBuffer lb;
  
      /**
       * Constructor to create a LongMonitor object for the long instrument
       * represented by the data in the given buffer.
       *
       * @param name the name of the long instrument
       * @param u the units of measure attribute
       * @param v the variability attribute
       * @param supported support level indicator
       * @param lb the buffer containing the long instrument data.
       */
      public PerfLongMonitor(String name, Units u, Variability v,
                             boolean supported, LongBuffer lb) {
          super(name, u, v, supported);
          this.lb = lb;
      }
  
      /**
       * {@inheritDoc}
       * The object returned contains a Long object containing the
       * current value of the LongInstrument.
       *
       * @return Object - the current value of the LongInstrument. The
       *                  return type is guaranteed to be of type Long.
       */
      public Object getValue() {
          return Long.valueOf(lb.get(0));
      }
  
      /**
       * Return the current value of the LongInstrument as an long.
       *
       * @return long - the current value of the LongInstrument
       */
      public long longValue() {
          return lb.get(0);
      }
  }
  