org.mmtk.utility.gcspy.drivers

Class GenImmortalSpaceDriver

java.lang.Object

org.mmtk.utility.gcspy.drivers.AbstractDriver

org.mmtk.utility.gcspy.drivers.LinearSpaceDriver

org.mmtk.utility.gcspy.drivers.ImmortalSpaceDriver

org.mmtk.utility.gcspy.drivers.GenImmortalSpaceDriver

public class GenImmortalSpaceDriver
extends ImmortalSpaceDriver

GCspy driver for the MMTk generational immortal space. Additional Stream for remset references. This class extends ImmortalSpaceDriver, a simple driver for the contiguous MMTk ImmortalSpace.

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	DEBUG
protected ShortStream	remsetStream The Stream for newly promoted objects
protected int	totalRemset Statistics for remset references

Fields inherited from class org.mmtk.utility.gcspy.drivers.LinearSpaceDriver

allTileNum, arrayObjectsStream, arrayPrimitiveStream, arrayUsedSpaceStream, lastAddress, lastSize, refFromImmortalStream, rootsStream, scalarObjectsStream, scalarUsedSpaceStream, subspace, totalArrayObjects, totalArrayUsedSpace, totalPrimitives, totalRefFromImmortal, totalRoots, totalScalarObjects, totalScalarUsedSpace

Fields inherited from class org.mmtk.utility.gcspy.drivers.AbstractDriver

blockSize, changed, control, CONTROL_BACKGROUND, CONTROL_LINK, CONTROL_SEPARATOR, CONTROL_UNUSED, CONTROL_USED, maxTileNum, mmtkSpace, myClass, name, server, serverSpace, streams

Constructor Summary

Constructors

Constructor and Description
GenImmortalSpaceDriver(ServerInterpreter server, String spaceName, Space mmtkSpace, int blockSize, boolean mainSpace) Create a new driver for a generational immortal space.

Method Summary

Modifier and Type	Method and Description
private ShortStream	createRemsetStream()
protected String	getDriverName() Get the name of this driver type.
boolean	handleRemsetAddress(Address addr) Handle a remset address
void	resetRemsetStream() Reset the remset Stream The remset Stream has to be reset seperately because we do not gather data in the usual way using scan().
protected void	setupSummaries() Setup summaries part of the transmit method.

Methods inherited from class org.mmtk.utility.gcspy.drivers.ImmortalSpaceDriver

registerDriversForReferenceNotification, scan

Methods inherited from class org.mmtk.utility.gcspy.drivers.LinearSpaceDriver

getScanner, handleReferenceFromImmortalSpace, handleRoot, resetData, resetRootsStream, scan, scanCheckPrimitiveArray, setRange, setupControlInfo, transmit

Methods inherited from class org.mmtk.utility.gcspy.drivers.AbstractDriver

addControl, addStream, controlIsBackground, controlIsSeparator, controlIsUnused, controlIsUsed, controlValues, countTileNum, countTileNum, createServerSpace, createSubspace, getControl, getMaxTileNum, getServerSpace, initControl, initControls, isConnected, maxObjectsPerBlock, scan, scan, send, setControl, setRange, setSpaceInfo, setTilenames

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

remsetStream

protected ShortStream remsetStream

The Stream for newly promoted objects

totalRemset

protected int totalRemset

Statistics for remset references

Constructor Detail

GenImmortalSpaceDriver

public GenImmortalSpaceDriver(ServerInterpreter server,
                              String spaceName,
                              Space mmtkSpace,
                              int blockSize,
                              boolean mainSpace)

Create a new driver for a generational immortal space.

Parameters:

server - The GCspy ServerInterpreter

spaceName - The name of this GCspy space

mmtkSpace - The MMTk space

blockSize - The tile size

mainSpace - Is this the main space?

Method Detail

getDriverName

protected String getDriverName()

Get the name of this driver type.

Overrides:

getDriverName in class ImmortalSpaceDriver

Returns:

The name, "MMTk GenImmortalSpaceDriver" for this driver.

createRemsetStream

private ShortStream createRemsetStream()

setupSummaries

protected void setupSummaries()

Setup summaries part of the transmit method.

Overrides method in superclass to handle additional Stream.

Overrides:

setupSummaries in class LinearSpaceDriver

handleRemsetAddress

public boolean handleRemsetAddress(Address addr)

Handle a remset address

Parameters:

addr - Remset Address

Returns:

true if the given Address is in this subspace.

resetRemsetStream

public void resetRemsetStream()

Reset the remset Stream The remset Stream has to be reset seperately because we do not gather data in the usual way using scan().