org.mmtk.plan

Class SimpleMutator

java.lang.Object

org.mmtk.plan.MutatorContext

org.mmtk.plan.SimpleMutator

Direct Known Subclasses:

ConcurrentMutator, StopTheWorldMutator

public abstract class SimpleMutator
extends MutatorContext

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

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

See Also:

MutatorContext

Field Summary

Fields inherited from class org.mmtk.plan.MutatorContext

immortal, lgcode, log, los, nonmove, smcode

Constructor Summary

Constructors

Constructor and Description
SimpleMutator()

Method Summary

Modifier and Type	Method and Description
void	collectionPhase(short phaseId, boolean primary) Perform a per-mutator collection phase.

Methods inherited from class org.mmtk.plan.MutatorContext

addressBulkCopy, addressRead, addressTryCompareAndSwap, addressWrite, alloc, assertRemsetsFlushed, booleanBulkCopy, booleanRead, booleanWrite, byteBulkCopy, byteRead, byteWrite, charBulkCopy, charRead, charWrite, checkAllocator, deinitMutator, doubleBulkCopy, doubleRead, doubleWrite, extentBulkCopy, extentRead, extentWrite, floatBulkCopy, floatRead, floatWrite, flush, flushRememberedSets, getAllocatorFromSpace, getId, getLog, initMutator, intBulkCopy, intRead, intTryCompareAndSwap, intWrite, javaLangReferenceReadBarrier, longBulkCopy, longRead, longTryCompareAndSwap, longWrite, objectReferenceBulkCopy, objectReferenceNonHeapRead, objectReferenceNonHeapWrite, objectReferenceRead, objectReferenceTryCompareAndSwap, objectReferenceWrite, offsetBulkCopy, offsetRead, offsetWrite, postAlloc, shortBulkCopy, shortRead, shortWrite, wordBulkCopy, wordRead, wordTryCompareAndSwap, wordWrite

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleMutator

public SimpleMutator()

Method Detail

collectionPhase

public void collectionPhase(short phaseId,
                            boolean primary)

Perform a per-mutator collection phase. This is executed by one collector thread on behalf of a mutator thread.

Specified by:

collectionPhase in class MutatorContext

Parameters:

phaseId - The unique phase identifier

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