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.jikesrvm.mm.mminterface;
014    
015    import org.jikesrvm.Callbacks;
016    import org.mmtk.utility.Constants;
017    
018    /**
019     * This class allows JMTk to register call backs with Callbacks.
020     */
021    public class Monitor implements Constants, Callbacks.ExitMonitor {
022    
023      /**
024       * Register the exit monitor at boot time.
025       */
026      public static void boot() {
027        Callbacks.addExitMonitor(new Monitor());
028      }
029    
030      /**
031       * The VM is about to exit.  Notify the plan.
032       *
033       * @param value The exit value
034       */
035      public void notifyExit(int value) {
036        Selected.Plan.get().notifyExit(value);
037      }
038    }