001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013package org.jikesrvm.adaptive.measurements.organizers;
014
015import org.jikesrvm.adaptive.measurements.RuntimeMeasurements;
016import org.jikesrvm.adaptive.measurements.listeners.YieldCounterListener;
017import org.vmmagic.pragma.NonMoving;
018
019/**
020 * An organizer that periodically decays runtime counters
021 *
022 **/
023@NonMoving
024public final class DecayOrganizer extends Organizer {
025
026  /**
027   * @param listener the associated listener
028   */
029  public DecayOrganizer(YieldCounterListener listener) {
030    this.listener = listener;
031    listener.setOrganizer(this);
032  }
033
034  /**
035   * Initialization: install and activate our listener.
036   */
037  @Override
038  public void initialize() {
039    RuntimeMeasurements.installTimerNullListener((YieldCounterListener) listener);
040  }
041
042  /**
043   * Decays the decayable objects.
044   */
045  @Override
046  void thresholdReached() {
047    RuntimeMeasurements.decayDecayableObjects();
048  }
049}
050
051
052