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.utility.deque;
014
015import org.vmmagic.unboxed.*;
016import org.vmmagic.pragma.*;
017
018/**
019 * This supports <i>unsynchronized</i> insertion of write buffer values.
020 */
021@Uninterruptible public class WriteBuffer extends LocalSSB {
022
023  /****************************************************************************
024   *
025   * Public instance methods
026   */
027
028  /**
029   * Constructor
030   *
031   * @param queue The shared queue to which this local ssb will append
032   * its buffers (when full or flushed).
033   */
034  public WriteBuffer(SharedDeque queue) {
035    super(queue);
036  }
037
038  /**
039   * Insert a value to be remembered into the write buffer.
040   *
041   * @param addr the value to be inserted into the write buffer
042   */
043  @NoInline
044  public final void insert(Address addr) {
045    checkTailInsert(1);
046    uncheckedTailInsert(addr);
047  }
048}