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.options;
014
015import static org.mmtk.policy.immix.ImmixConstants.DEFAULT_LINE_REUSE_RATIO;
016
017/**
018 */
019public class LineReuseRatio extends org.vmutil.options.FloatOption {
020  /**
021   * Create the option.
022   */
023  public LineReuseRatio() {
024    super(Options.set, "Line Reuse Ratio",
025          "Blocks with this fraction marked may be reused for allocation",
026          DEFAULT_LINE_REUSE_RATIO);
027  }
028
029  /**
030   * Ensure the value is valid.
031   */
032  @Override
033  protected void validate() {
034    failIf((this.value <= 0 || this.value > 1.0), "Ratio must be a float between 0 and 1");
035  }
036}