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.mmtk.plan.refcount;
014
015import org.mmtk.utility.deque.*;
016
017import org.vmmagic.pragma.*;
018import org.vmmagic.unboxed.*;
019
020/**
021 * This class implements a dec-buffer for a reference counting collector
022 *
023 * @see org.mmtk.plan.TransitiveClosure
024 */
025@Uninterruptible
026public final class RCDecBuffer extends ObjectReferenceBuffer {
027  /****************************************************************************
028   *
029   * Initialization
030   */
031
032  /**
033   * Constructor
034   *
035   * @param queue The shared deque that is used.
036   */
037  public RCDecBuffer(SharedDeque queue) {
038    super("dec", queue);
039  }
040
041  @Override
042  @Inline
043  protected void process(ObjectReference object) {
044    if (RCBase.isRCObject(object)) {
045      push(object);
046    }
047  }
048}