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     */
013    package org.mmtk.utility.options;
014    
015    import static org.mmtk.policy.immix.ImmixConstants.DEFAULT_DEFRAG_HEADROOM;
016    
017    /**
018     */
019    public class DefragHeadroom extends org.vmutil.options.PagesOption {
020      /**
021       * Create the option.
022       */
023      public DefragHeadroom() {
024        super(Options.set, "Defrag Headroom",
025              "Allow the defragmenter this amount of headroom during defrag.",
026              DEFAULT_DEFRAG_HEADROOM);
027      }
028    }