MarkCompactCollector.FromCursor (Jikes RVM API)

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org.mmtk.policy
Class MarkCompactCollector.FromCursor

java.lang.Object
  org.mmtk.policy.MarkCompactCollector.RegionCursor
      org.mmtk.policy.MarkCompactCollector.FromCursor

Enclosing class:: MarkCompactCollector

private static final class MarkCompactCollector.FromCursor
extends MarkCompactCollector.RegionCursor
extends MarkCompactCollector.RegionCursor

Subclass for the read-only cursor that leads the scan of regions.

Field Summary

Fields inherited from class org.mmtk.policy.MarkCompactCollector.RegionCursor
`cursor, limit, region`

Constructor Summary
`MarkCompactCollector.FromCursor()`

Method Summary
`(package private) void`	`advanceToNextForwardableRegion(MarkCompactSpace space)` Advance the cursor either to the next region in the list, or to a new region allocated from the global list.
`(package private) void`	`advanceToNextRegion()` Override the superclass with an additional assertion - we only advance when we have read to the end, and the cursor must point precisely to the last allocated byte in the region.
`(package private) ObjectReference`	`advanceToObject()` Advance from the cursor to the start of the next object.
`(package private) void`	`advanceToObjectEnd(ObjectReference current)` Advance the cursor to the end of the given object.
`(package private) boolean`	`hasMoreObjects()`
`(package private) void`	`init(Address region)` Initialize the cursor - the limit is the end of the allocated data

Methods inherited from class org.mmtk.policy.MarkCompactCollector.RegionCursor
`assertCursorInBounds, get, getLimit, getRegion, inc, incTo, isAvailable, isInRegion, isValid, print, sameRegion`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

MarkCompactCollector.FromCursor

public MarkCompactCollector.FromCursor()

Method Detail

init

void init(Address region)

Initialize the cursor - the limit is the end of the allocated data

Specified by:: init in class MarkCompactCollector.RegionCursor

Parameters:: region - The region to be processed.

advanceToObject

ObjectReference advanceToObject()

Advance from the cursor to the start of the next object.

Returns:: The object reference of the next object.

advanceToObjectEnd

void advanceToObjectEnd(ObjectReference current)

Advance the cursor to the end of the given object.

advanceToNextForwardableRegion

void advanceToNextForwardableRegion(MarkCompactSpace space)

Advance the cursor either to the next region in the list, or to a new region allocated from the global list.

Parameters:: space -

advanceToNextRegion

void advanceToNextRegion()

Override the superclass with an additional assertion - we only advance when we have read to the end, and the cursor must point *precisely* to the last allocated byte in the region.