ImmortalSpaceDriver (Jikes RVM API)

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org.mmtk.utility.gcspy.drivers
Class ImmortalSpaceDriver

java.lang.Object
  org.mmtk.utility.gcspy.drivers.AbstractDriver
      org.mmtk.utility.gcspy.drivers.LinearSpaceDriver
          org.mmtk.utility.gcspy.drivers.ImmortalSpaceDriver

Direct Known Subclasses:: GenImmortalSpaceDriver

public class ImmortalSpaceDriver
extends LinearSpaceDriver
extends LinearSpaceDriver

GCspy driver for the contiguous MMTk ImmortalSpace. Adds features for the Immortal space.

This class extends LinearSpaceDriver, a simple driver for contiguous MMTk spaces such as CopySpace and ImmortalSpace.

Nested Class Summary
`private class`	`ImmortalSpaceDriver.Closure` Used to visit the edges in the immortal object.

Field Summary
`private ImmortalSpaceDriver.Closure`	`closure`
`private static boolean`	`DEBUG`
`private AbstractDriver[]`	`registeredDrivers`

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
`ImmortalSpaceDriver(ServerInterpreter server, String spaceName, Space mmtkSpace, int blockSize, boolean mainSpace)` Create a new driver for an immortal Contiguous MMTk space.

Method Summary
`protected String`	`getDriverName()` Get the name of this driver type.
`void`	`registerDriversForReferenceNotification(AbstractDriver[] drivers)` Register a set of AbstractDriver instances to be notified about direct references.
`void`	`scan(ObjectReference object, boolean total)` Update the tile statistics.

Methods inherited from class org.mmtk.utility.gcspy.drivers.LinearSpaceDriver
`getScanner, handleReferenceFromImmortalSpace, handleRoot, resetData, resetRootsStream, scan, scanCheckPrimitiveArray, setRange, setupControlInfo, setupSummaries, 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

registeredDrivers

private AbstractDriver[] registeredDrivers

closure

private ImmortalSpaceDriver.Closure closure

Constructor Detail

ImmortalSpaceDriver

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

Create a new driver for an immortal Contiguous MMTk 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 LinearSpaceDriver

Returns:: The name, "MMTk ImmortalSpaceDriver" for this driver.

scan

public void scan(ObjectReference object,
                 boolean total)

Update the tile statistics.
This method overrides scan iin its superclass to add immortal space features.

Overrides:: scan in class LinearSpaceDriver

Parameters:: object - The current object; total - Whether to accumulate the values

registerDriversForReferenceNotification

public void registerDriversForReferenceNotification(AbstractDriver[] drivers)

Parameters:: drivers - The array of driver objects.