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sun.jvm.hotspot.utilities

public Class BitMap

Class Inheritance

extends Object

java.lang.Object
sun.jvm.hotspot.utilities.BitMap

Imports

sun.jvm.hotspot.debugger.*

Manages a bitmap of the specified bit size

Field Summary

Modifier and Type	Field and Description
private static final int	bitsPerWord
private static final int	bytesPerWord
private int[]	data
private int	size

Constructor Summary

Access	Constructor and Description
public	BitMap(int sizeInBits)

Method Summary

Modifier and Type	Method and Description
public boolean	at(int offset)
public void	atPut(int offset, boolean value)
private int	bitInWord(int offset)
public void	clear()
public int	getNextOneOffset(int l_offset, int r_offset)
private int	indexFor(int offset)
public boolean	isSame(BitMap other) Both bitmaps must be the same size.
public void	iterate(BitMapClosure blk)
public void	set_map(Address addr)
public void	set_size(int value)
public boolean	setDifference(BitMap other) Sets this bitmap to the logical difference between it and the argument; that is, any bits that are set in the argument are cleared in this bitmap.
public void	setFrom(BitMap other) Sets this bitmap to the contents of the argument.
public void	setIntersection(BitMap other) Sets this bitmap to the logical intersection of it and the argument.
public boolean	setUnion(BitMap other) Sets this bitmap to the logical union of it and the argument.
public int	size()
private int	sizeInWords()
private int	wordFor(int offset)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

bitsPerWord	back to summary
private static final int bitsPerWord

bytesPerWord	back to summary
private static final int bytesPerWord

data	back to summary
private int[] data

size	back to summary
private int size

Constructor Detail

BitMap	back to summary
public BitMap(int sizeInBits)

Method Detail

at	back to summary
public boolean at(int offset)

atPut	back to summary
public void atPut(int offset, boolean value)

bitInWord	back to summary
private int bitInWord(int offset)

clear	back to summary
public void clear()

getNextOneOffset	back to summary
public int getNextOneOffset(int l_offset, int r_offset)

indexFor	back to summary
private int indexFor(int offset)

isSame	back to summary
public boolean isSame(BitMap other) Both bitmaps must be the same size.

iterate	back to summary
public void iterate(BitMapClosure blk)

set_map	back to summary
public void set_map(Address addr)

set_size	back to summary
public void set_size(int value)

setDifference	back to summary
public boolean setDifference(BitMap other) Sets this bitmap to the logical difference between it and the argument; that is, any bits that are set in the argument are cleared in this bitmap. Both bitmaps must be the same size. Returns true if a change was caused in this bitmap.

setFrom	back to summary
public void setFrom(BitMap other) Sets this bitmap to the contents of the argument. Both bitmaps must be the same size.

setIntersection	back to summary
public void setIntersection(BitMap other) Sets this bitmap to the logical intersection of it and the argument. Both bitmaps must be the same size.

setUnion	back to summary
public boolean setUnion(BitMap other) Sets this bitmap to the logical union of it and the argument. Both bitmaps must be the same size. Returns true if a change was caused in this bitmap.

size	back to summary
public int size()

sizeInWords	back to summary
private int sizeInWords()

wordFor	back to summary
private int wordFor(int offset)