org.mmtk.plan

Class SimpleCollector

java.lang.Object

org.mmtk.plan.CollectorContext

org.mmtk.plan.ParallelCollector

org.mmtk.plan.SimpleCollector

Direct Known Subclasses:

ConcurrentCollector, StopTheWorldCollector

public abstract class SimpleCollector
extends ParallelCollector

This class (and its sub-classes) implement per-collector thread behavior and state.

MMTk assumes that the VM instantiates instances of CollectorContext in thread local storage (TLS) for each thread participating in collection. Accesses to this state are therefore assumed to be low-cost during mutator time.

See Also:

CollectorContext

Field Summary

Fields

Modifier and Type	Field and Description
protected SanityCheckerLocal	sanityLocal Used for sanity checking.

Fields inherited from class org.mmtk.plan.ParallelCollector

group, lastTriggerCount, workerOrdinal

Fields inherited from class org.mmtk.plan.CollectorContext

log

Constructor Summary

Constructors

Constructor and Description
SimpleCollector()

Method Summary

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

Methods inherited from class org.mmtk.plan.ParallelCollector

collect, getCurrentTrace, parallelWorkerCount, parallelWorkerOrdinal, park, rendezvous, run

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

sanityLocal

protected final SanityCheckerLocal sanityLocal

Used for sanity checking.

Constructor Detail

SimpleCollector

public SimpleCollector()

Method Detail

collectionPhase

public void collectionPhase(short phaseId,
                            boolean primary)

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

Overrides:

collectionPhase in class ParallelCollector

Parameters:

phaseId - The unique phase identifier

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

global

private static Simple global()

Returns:

The active global plan as a Simple instance.