/*
* This file is part of the Jikes RVM project (http://jikesrvm.org).
*
* This file is licensed to You under the Eclipse Public License (EPL);
* You may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.
*/
package org.mmtk.plan.semispace.gcspy;
import org.mmtk.plan.Trace;
import org.mmtk.plan.semispace.SSTraceLocal;
import org.mmtk.policy.Space;
import org.vmmagic.pragma.*;
import org.vmmagic.unboxed.*;
/**
* This class implements the core functionality for a transitive
* closure over the heap graph.
*/
@Uninterruptible
public final class SSGCspyTraceLocal extends SSTraceLocal {
/**
* @param trace the associated global trace
*/
public SSGCspyTraceLocal(Trace trace) {
super(trace);
}
/****************************************************************************
*
* Externally visible Object processing and tracing
*/
/**
* {@inheritDoc}
*/
@Override
@Inline
public ObjectReference traceObject(ObjectReference object) {
if (object.isNull()) return object;
if (Space.isInSpace(SSGCspy.GCSPY, object))
return SSGCspy.gcspySpace.traceObject(this, object);
return super.traceObject(object);
}
/**
* Will this object move from this point on, during the current trace ?
*
* @param object The object to query.
* @return True if the object will not move.
*/
@Override
public boolean willNotMoveInCurrentCollection(ObjectReference object) {
if (Space.isInSpace(SSGCspy.GCSPY, object))
return true;
return super.willNotMoveInCurrentCollection(object);
}
}