OpenJDK 27 · sun.jvm.hotspot.code.CompressedStream · APIdia, the JavaDoc alternative

NOTE that this class takes the address of a buffer. This means that it can read previously-generated debug information directly from the target VM. However, it also means that you can't create a "wrapper" object for a CompressedStream down in the VM. It looks like these are only kept persistently in OopMaps, and the code has been special-cased in OopMap.java to handle this.

Field Summary

Modifier and Type	Field and Description
public static final int	BitsPerByte
protected Address	buffer
public static final int	LogBitsPerByte
protected int	position

Constructor Summary

Access	Constructor and Description
public	CompressedStream(Address buffer) Equivalent to CompressedStream(buffer, 0)
public	CompressedStream(Address buffer, int position)

Method Summary

Modifier and Type	Method and Description
public int	decodeSign(int value)
public int	encodeSign(int value)
public Address	getBuffer()
public int	getPosition()
public int	reverseInt(int i)
public void	setPosition(int position)

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

Field Detail

BitsPerByte	back to summary
public static final int BitsPerByte

buffer	back to summary
protected Address buffer

LogBitsPerByte	back to summary
public static final int LogBitsPerByte

position	back to summary
protected int position

Constructor Detail

CompressedStream	back to summary
public CompressedStream(Address buffer) Equivalent to CompressedStream(buffer, 0)

CompressedStream	back to summary
public CompressedStream(Address buffer, int position)

Method Detail

decodeSign	back to summary
public int decodeSign(int value)

encodeSign	back to summary
public int encodeSign(int value)

getBuffer	back to summary
public Address getBuffer()

getPosition	back to summary
public int getPosition()

reverseInt	back to summary
public int reverseInt(int i)