MarkCompactCollector.ToCursor (Jikes RVM API)

Overview

Package

Class

Use

Tree

Serialized

Deprecated

Index

Help

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

org.mmtk.policy
Class MarkCompactCollector.ToCursor

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

Enclosing class:: MarkCompactCollector

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

Subclass for the read-only cursor that follows the 'from' cursor, writing or calculating the position of copied objects

Field Summary

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

Constructor Summary
`MarkCompactCollector.ToCursor()`

Method Summary
`(package private) void`	`advanceToNextRegion()` Move to the next region, in read-only mode.
`(package private) void`	`copy(ObjectReference from, ObjectReference to)` Copy an object to an address within this cursor's region.
`(package private) void`	`finish()` Update the metadata of the current region with the current value of the cursor.
`(package private) void`	`finishAndAdvanceToNextRegion()` Move to the next region, updating the metadata with the current 'write' state.
`(package private) void`	`init(Address region)` Initialize the cursor to a given region.
`(package private) Address`	`snip()` Terminate the list of regions here.

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.ToCursor

public MarkCompactCollector.ToCursor()

Method Detail

init

void init(Address region)

Initialize the cursor to a given region. The limit is the limit of available space in the region.

Specified by:: init in class MarkCompactCollector.RegionCursor

Parameters:: region - The region to be processed.

finish

void finish()

Update the metadata of the current region with the current value of the cursor. Zero the region from here to the end.

snip

Address snip()

Terminate the list of regions here.

Returns:: The address of the (old) next region in the list.

copy

void copy(ObjectReference from,
          ObjectReference to)

Copy an object to an address within this cursor's region.

Parameters:: from - The source object; to - The target object

finishAndAdvanceToNextRegion

void finishAndAdvanceToNextRegion()

Move to the next region, updating the metadata with the current 'write' state.

advanceToNextRegion

void advanceToNextRegion()

Move to the next region, in read-only mode. Add the assertion of validity, since we shouldn't be able to fall off the end of the list while writing.

Overrides:: advanceToNextRegion in class MarkCompactCollector.RegionCursor