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.generational.immix;
014    
015    import org.mmtk.plan.generational.GenConstraints;
016    import static org.mmtk.policy.immix.ImmixConstants.MAX_IMMIX_OBJECT_BYTES;
017    
018    import org.vmmagic.pragma.*;
019    
020    /**
021     * This class and its subclasses communicate to the host VM/Runtime
022     * any features of the selected plan that it needs to know.  This is
023     * separate from the main Plan/PlanLocal class in order to bypass any
024     * issues with ordering of static initialization.
025     *
026     */
027    @Uninterruptible
028    public class GenImmixConstraints extends GenConstraints {
029      @Override
030      public int numSpecializedScans() { return 2; }
031      @Override
032      public int maxNonLOSCopyBytes() { return MAX_IMMIX_OBJECT_BYTES;}
033    }