org.mmtk.plan.generational.immix

Class GenImmixConstraints

java.lang.Object

org.mmtk.plan.PlanConstraints

org.mmtk.plan.SimpleConstraints

org.mmtk.plan.StopTheWorldConstraints

org.mmtk.plan.generational.GenConstraints

org.mmtk.plan.generational.immix.GenImmixConstraints

Direct Known Subclasses:

Selected.Constraints

public class GenImmixConstraints
extends GenConstraints

This class and its subclasses communicate to the host VM/Runtime any features of the selected plan that it needs to know. This is separate from the main Plan/PlanLocal class in order to bypass any issues with ordering of static initialization.

Constructor Summary

Constructors

Constructor and Description
GenImmixConstraints()

Method Summary

Modifier and Type	Method and Description
int	maxNonLOSCopyBytes()
int	numSpecializedScans()

Methods inherited from class org.mmtk.plan.generational.GenConstraints

gcHeaderBits, gcHeaderWords, generational, maxNonLOSDefaultAllocBytes, movesObjects, needsLogBitInHeader, needsObjectReferenceNonHeapWriteBarrier, needsObjectReferenceWriteBarrier, objectReferenceBulkCopySupported

Methods inherited from class org.mmtk.plan.PlanConstraints

addressBulkCopySupported, booleanBulkCopySupported, byteBulkCopySupported, charBulkCopySupported, doubleBulkCopySupported, extentBulkCopySupported, floatBulkCopySupported, generateGCTrace, intBulkCopySupported, longBulkCopySupported, maxNonLOSNonMovingAllocBytes, maxNumGCThreads, needsAddressReadBarrier, needsAddressWriteBarrier, needsBooleanReadBarrier, needsBooleanWriteBarrier, needsByteReadBarrier, needsByteWriteBarrier, needsCharReadBarrier, needsCharWriteBarrier, needsConcurrentWorkers, needsDoubleReadBarrier, needsDoubleWriteBarrier, needsExtentReadBarrier, needsExtentWriteBarrier, needsFloatReadBarrier, needsFloatWriteBarrier, needsForwardAfterLiveness, needsIntReadBarrier, needsIntWriteBarrier, needsJavaLangReferenceReadBarrier, needsLinearScan, needsLongReadBarrier, needsLongWriteBarrier, needsObjectReferenceNonHeapReadBarrier, needsObjectReferenceReadBarrier, needsOffsetReadBarrier, needsOffsetWriteBarrier, needsShortReadBarrier, needsShortWriteBarrier, needsWordReadBarrier, needsWordWriteBarrier, offsetBulkCopySupported, shortBulkCopySupported, withGCspy, wordBulkCopySupported

Methods inherited from class java.lang.Object

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

Constructor Detail

GenImmixConstraints

public GenImmixConstraints()

Method Detail

numSpecializedScans

public int numSpecializedScans()

Overrides:

numSpecializedScans in class GenConstraints

Returns:

The specialized scan methods required

maxNonLOSCopyBytes

public int maxNonLOSCopyBytes()

Overrides:

maxNonLOSCopyBytes in class PlanConstraints

Returns:

Size (in bytes) beyond which copied objects must be copied to the LOS