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.sanitychecker;
014    
015    import org.mmtk.plan.TraceLocal;
016    import org.mmtk.plan.Trace;
017    
018    import org.vmmagic.pragma.*;
019    import org.vmmagic.unboxed.*;
020    
021    /**
022     * This class implements the simply sanity closure.
023     */
024    @Uninterruptible
025    public final class SanityTraceLocal extends TraceLocal {
026    
027      private final SanityChecker sanityChecker;
028    
029      /**
030       * Constructor
031       */
032      public SanityTraceLocal(Trace trace, SanityChecker sanityChecker) {
033        super(trace);
034        this.sanityChecker = sanityChecker;
035      }
036    
037      /****************************************************************************
038       *
039       * Object processing and tracing
040       */
041    
042      /**
043       * {@inheritDoc}
044       */
045      @Override
046      @Inline
047      public ObjectReference traceObject(ObjectReference object, boolean root) {
048        sanityChecker.processObject(this, object, root);
049        return object;
050      }
051    
052      /**
053       * Will this object move from this point on, during the current trace?
054       *
055       * @param object The object to query.
056       * @return {@code true} if the object will not move.
057       */
058      @Override
059      public boolean willNotMoveInCurrentCollection(ObjectReference object) {
060        // We never move objects!
061        return true;
062      }
063    }