org.mmtk.utility.sanitychecker

Class SanityRootTraceLocal

java.lang.Object

org.mmtk.plan.TransitiveClosure

org.mmtk.plan.TraceLocal

org.mmtk.utility.sanitychecker.SanityRootTraceLocal

public final class SanityRootTraceLocal
extends TraceLocal

This class implements the parallel root-gathering part of a sanity check.

Field Summary

Fields inherited from class org.mmtk.plan.TraceLocal

rootLocations, values

Fields inherited from class org.mmtk.plan.TransitiveClosure

specializedScan

Constructor Summary

Constructors

Constructor and Description
SanityRootTraceLocal(Trace trace)

Method Summary

Modifier and Type	Method and Description
void	completeTrace() Finishing processing all GC work.
void	copyRootValuesTo(TraceLocal trace) Copy root values across to the 'real' single-threaded trace that will do the sanity checking.
void	processRoots() Process delayed roots.
ObjectReference	traceObject(ObjectReference object, boolean root) Trace a root object, i.e. root must be true.
boolean	willNotMoveInCurrentCollection(ObjectReference object) Will this object move from this point on, during the current trace ?

Methods inherited from class org.mmtk.plan.TraceLocal

flush, getForwardedFinalizable, getForwardedReference, getForwardedReferenceType, getForwardedReferent, incrementalTrace, isLive, isReachable, isReferentLive, logMessage, overwriteReferenceDuringTrace, prepare, processEdge, processInteriorEdge, processNode, processRememberedSets, processRootEdge, readyToFinalize, release, reportDelayedRootEdge, retainForFinalize, retainReferent, scanObject, traceObject

Methods inherited from class org.mmtk.plan.TransitiveClosure

getSpecializedScanClass, registerSpecializedScan

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SanityRootTraceLocal

public SanityRootTraceLocal(Trace trace)

Method Detail

copyRootValuesTo

public void copyRootValuesTo(TraceLocal trace)

Copy root values across to the 'real' single-threaded trace that will do the sanity checking.

Parameters:

trace - the trace that will do the sanity checking

processRoots

public void processRoots()

Process delayed roots. This does not make sense for SanityRootTraceLocal. are empty.

Overrides:

processRoots in class TraceLocal

completeTrace

public void completeTrace()

Finishing processing all GC work. This does not make sense for SanityRootTraceLocal.

Overrides:

completeTrace in class TraceLocal

traceObject

public ObjectReference traceObject(ObjectReference object,
                                   boolean root)

Trace a root object, i.e. root must be true.

Overrides:

traceObject in class TraceLocal

Parameters:

object - The object to be traced.

root - Is this object a root?

Returns:

The new reference to the same object instance.

willNotMoveInCurrentCollection

public boolean willNotMoveInCurrentCollection(ObjectReference object)

Will this object move from this point on, during the current trace ?

Overrides:

willNotMoveInCurrentCollection in class TraceLocal

Parameters:

object - The object to query.

Returns:

true if the object will not move.