org.mmtk.plan.concurrent

Class ConcurrentCollector

java.lang.Object

org.mmtk.plan.CollectorContext

org.mmtk.plan.ParallelCollector

org.mmtk.plan.SimpleCollector

org.mmtk.plan.concurrent.ConcurrentCollector

Direct Known Subclasses:

CMSCollector

public abstract class ConcurrentCollector
extends SimpleCollector

This class implements per-collector thread behavior and state for a concurrent collector.

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	continueCollecting

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
ConcurrentCollector()

Method Summary

Modifier and Type	Method and Description
void	collect() Perform a single garbage collection
void	collectionPhase(short phaseId, boolean primary) Perform a (local, i.e.per-collector) collection phase.
void	concurrentCollect() Perform some concurrent garbage collection
void	concurrentCollectionPhase(short phaseId) Perform some concurrent collection work.
protected abstract boolean	concurrentTraceComplete()
private static Concurrent	global()
void	run() Entry point for the collector context.

Methods inherited from class org.mmtk.plan.ParallelCollector

getCurrentTrace, 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

continueCollecting

private static volatile boolean continueCollecting

Constructor Detail

ConcurrentCollector

public ConcurrentCollector()

Method Detail

run

public void run()

Entry point for the collector context.

Overrides:

run in class ParallelCollector

concurrentCollect

public final void concurrentCollect()

Perform some concurrent garbage collection

collect

public void collect()

Description copied from class: ParallelCollector

Perform a single garbage collection

Overrides:

collect in class ParallelCollector

collectionPhase

public void collectionPhase(short phaseId,
                            boolean primary)

Description copied from class: SimpleCollector

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

Overrides:

collectionPhase in class SimpleCollector

Parameters:

phaseId - The unique phase identifier

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

concurrentCollectionPhase

public void concurrentCollectionPhase(short phaseId)

Perform some concurrent collection work.

Parameters:

phaseId - The unique phase identifier

concurrentTraceComplete

protected abstract boolean concurrentTraceComplete()

Returns:

whether all work has been completed

global

private static Concurrent global()

Returns:

The active global plan as a Concurrent instance.