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Memory.Heap
Class ImmortalHeap  

java.lang.Object
  Memory.Heap.Heap
      Memory.Heap.ImmortalHeap

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public class ImmortalHeap

extends Heap

Version:

$Id: ImmortalHeap.java,v 1.5 2003/05/12 10:05:19 joewhaley Exp $

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Field Summary
private  Memory.HeapAddress	allocationCursor
private  int	markValue

 

Fields inherited from class Memory.Heap.Heap

allHeaps, end, name, start, verbose

 

Constructor Summary

ImmortalHeap()           Initialize for boot image - called from init of various collectors or spaces

 

Method Summary
java.lang.Object	allocateAlignedArray(Clazz.jq_Array type, int numElements, int alignment)           Allocate an array object whose pointer is N bit aligned.
private  Memory.HeapAddress	allocateInternal(int size, int alignment, int offset)
protected  Memory.HeapAddress	allocateZeroedMemory(int size)           Allocate a chunk of memory of a given size.
protected  Memory.HeapAddress	allocateZeroedMemory(int size, int alignment)           Allocate a chunk of memory of a given size.
protected  Memory.HeapAddress	allocateZeroedMemory(int size, int alignment, int offset)           Allocate a chunk of memory of a given size.
int	freeMemory()           Get the total amount of memory available in immortal space.
void	init(int size)
boolean	isLive(Memory.HeapAddress ref)           Is the object reference live?
boolean	mark(Memory.HeapAddress ref)           Mark an object in the boot heap
protected  void	postAllocationProcessing(java.lang.Object newObj)           Hook to allow heap to perform post-allocation processing of the object.
void	startCollect()           Work to do before collection starts.
int	totalMemory()           Get total amount of memory used by immortal space.

 

Methods inherited from class Memory.Heap.Heap

addrInAnyHeap, addrInHeap, allocateArray, allocateArray, allocateObject, allocateObject, boot, clobber, clobber, getSize, paranoidScan, refInAnyHeap, refInHeap, setRegion, show, show, showAllHeaps, showRange, touchPages, zero

 

Methods inherited from class java.lang.Object

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

 

Field Detail

allocationCursor

private Memory.HeapAddress allocationCursor

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markValue

private int markValue

Constructor Detail

ImmortalHeap

public ImmortalHeap()

Initialize for boot image - called from init of various collectors or spaces

Method Detail

init

public void init(int size)

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totalMemory

public int totalMemory()

Get total amount of memory used by immortal space.

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freeMemory

public int freeMemory()

Get the total amount of memory available in immortal space.

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mark

public boolean mark(Memory.HeapAddress ref)

Mark an object in the boot heap

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isLive

public boolean isLive(Memory.HeapAddress ref)

Is the object reference live?

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startCollect

public void startCollect()

Work to do before collection starts.

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allocateAlignedArray

public java.lang.Object allocateAlignedArray(Clazz.jq_Array type,
                                             int numElements,
                                             int alignment)

Allocate an array object whose pointer is N bit aligned.

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allocateZeroedMemory

protected Memory.HeapAddress allocateZeroedMemory(int size)

Allocate a chunk of memory of a given size.

Specified by:

allocateZeroedMemory in class Heap

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allocateZeroedMemory

protected Memory.HeapAddress allocateZeroedMemory(int size,
                                                  int alignment)

Allocate a chunk of memory of a given size.

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allocateZeroedMemory

protected Memory.HeapAddress allocateZeroedMemory(int size,
                                                  int alignment,
                                                  int offset)

Allocate a chunk of memory of a given size.

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allocateInternal

private Memory.HeapAddress allocateInternal(int size,
                                            int alignment,
                                            int offset)

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postAllocationProcessing

protected void postAllocationProcessing(java.lang.Object newObj)

Hook to allow heap to perform post-allocation processing of the object. For example, setting the GC state bits in the object header.

Specified by:

postAllocationProcessing in class Heap

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