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.plan;
014    
015    import org.mmtk.policy.ImmortalSpace;
016    import org.mmtk.utility.heap.VMRequest;
017    
018    /**
019     * This interface provides an immortal allocation space for GCspy objects.
020     */
021    public interface GCspyPlan {
022    
023      /**
024       * Any GCspy objects allocated after booting are allocated
025       * in a separate immortal space.
026       */
027      ImmortalSpace gcspySpace = new ImmortalSpace("gcspy", VMRequest.create());
028    
029      /** The descriptor for the GCspy allocation space */
030      int GCSPY = gcspySpace.getDescriptor();
031    }