org.mmtk.plan.concurrent.marksweep

Class CMSCollector

java.lang.Object

org.mmtk.plan.CollectorContext

org.mmtk.plan.ParallelCollector

org.mmtk.plan.SimpleCollector

org.mmtk.plan.concurrent.ConcurrentCollector

org.mmtk.plan.concurrent.marksweep.CMSCollector

public class CMSCollector
extends ConcurrentCollector

This class implements per-collector thread behavior and state for the CMS plan, which implements a full-heap concurrent mark-sweep collector.

Field Summary

Fields

Modifier and Type	Field and Description
protected CMSTraceLocal	trace Instance fields

Fields inherited from class org.mmtk.plan.SimpleCollector

sanityLocal

Fields inherited from class org.mmtk.plan.ParallelCollector

group

Fields inherited from class org.mmtk.plan.CollectorContext

log

Constructor Summary

Constructors

Constructor and Description
CMSCollector() Constructor

Method Summary

Modifier and Type	Method and Description
void	collectionPhase(short phaseId, boolean primary) Perform a (local, i.e.per-collector) collection phase.
protected boolean	concurrentTraceComplete()
TraceLocal	getCurrentTrace()
private static CMS	global()

Methods inherited from class org.mmtk.plan.concurrent.ConcurrentCollector

collect, concurrentCollect, concurrentCollectionPhase, run

Methods inherited from class org.mmtk.plan.ParallelCollector

parallelWorkerCount, parallelWorkerOrdinal, park, rendezvous

Methods inherited from class org.mmtk.plan.CollectorContext

allocCopy, copyCheckAllocator, getId, getLog, initCollector, postCopy

Methods inherited from class java.lang.Object

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

Field Detail

trace

protected final CMSTraceLocal trace

Instance fields

Constructor Detail

CMSCollector

public CMSCollector()

Constructor

Method Detail

collectionPhase

public void collectionPhase(short phaseId,
                            boolean primary)

Perform a (local, i.e.per-collector) collection phase.

Overrides:

collectionPhase in class ConcurrentCollector

Parameters:

phaseId - The unique phase identifier

primary - Should this thread be used to execute any single-threaded local operations?

concurrentTraceComplete

protected boolean concurrentTraceComplete()

Specified by:

concurrentTraceComplete in class ConcurrentCollector

Returns:

whether all work has been completed

global

private static CMS global()

Returns:

The active global plan as an MS instance.

getCurrentTrace

public final TraceLocal getCurrentTrace()

Overrides:

getCurrentTrace in class ParallelCollector

Returns:

The current trace instance.