OpenJDK 27 · sun.jvm.hotspot.runtime.RegisterMap · APIdia, the JavaDoc alternative

Field Summary

Modifier and Type	Field and Description
protected boolean	includeArgumentOops Should include argument_oop marked locations for compiler
protected Address[]	location Location of registers
protected long[]	locationValid
protected static int	locationValidSize
protected static int	locationValidTypeSize
protected static int	regCount Location of a frame where the pc is not at a call (NULL if no frame exists)
protected JavaThread	thread Reference to current thread
protected boolean	updateMap Tells if the register map needs to be updated when traversing the stack

Constructor Summary

Access	Constructor and Description
protected	RegisterMap(JavaThread thread, boolean updateMap)
protected	RegisterMap(RegisterMap map) Makes a copy of map into this

Method Summary

Modifier and Type	Method and Description
public void	clear()
protected abstract void	clearPD() Platform-dependent clear() functionality
public abstract Object	clone() Overrides java.lang.Object.clone. Creates and returns a copy of this object.
public RegisterMap	copy()
public boolean	getIncludeArgumentOops()
public Address	getLocation(VMReg reg)
protected abstract Address	getLocationPD(VMReg reg) Platform-dependent getLocation() functionality
public JavaThread	getThread()
public boolean	getUpdateMap()
private static void	initialize(TypeDataBase db)
protected abstract void	initializeFromPD(RegisterMap map) Platform-dependent initializeFrom() functionality
protected abstract void	initializePD() Platform-dependent initialize() functionality
public void	print()
public void	printOn(PrintStream tty)
public void	setIncludeArgumentOops(boolean f)
public void	setLocation(VMReg reg, Address loc)

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

Field Detail

includeArgumentOops	back to summary
protected boolean includeArgumentOops Should include argument_oop marked locations for compiler

location	back to summary
protected Address[] location Location of registers

locationValid	back to summary
protected long[] locationValid

locationValidSize	back to summary
protected static int locationValidSize

locationValidTypeSize	back to summary
protected static int locationValidTypeSize

regCount	back to summary
protected static int regCount Location of a frame where the pc is not at a call (NULL if no frame exists)

thread	back to summary
protected JavaThread thread Reference to current thread

updateMap	back to summary
protected boolean updateMap Tells if the register map needs to be updated when traversing the stack

Constructor Detail

RegisterMap	back to summary
protected RegisterMap(JavaThread thread, boolean updateMap)

RegisterMap	back to summary
protected RegisterMap(RegisterMap map) Makes a copy of map into this

Method Detail

clear	back to summary
public void clear()

clearPD	back to summary
protected abstract void clearPD() Platform-dependent clear() functionality

clone back to summary

clone	back to summary
public abstract Object clone() Overrides java.lang.Object.clone. Doc from java.lang.Object.clone. Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object `x`, the expression: x.clone() != x will be true, and that the expression: x.clone().getClass() == x.getClass() will be `true`, but these are not absolute requirements. While it is typically the case that: x.clone().equals(x) will be `true`, this is not an absolute requirement. By convention, the returned object should be obtained by calling `super.clone`. If a class and all of its superclasses (except `Object`) obey this convention, it will be the case that `x.clone().getClass() == x.getClass()`. By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by `super.clone` before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by `super.clone` need to be modified.

public abstract Object clone()

Overrides java.lang.Object.clone.

Doc from java.lang.Object.clone.

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

x.clone() != x

will be true, and that the expression:

x.clone().getClass() == x.getClass()

will be true, but these are not absolute requirements. While it is typically the case that:

x.clone().equals(x)

will be true, this is not an absolute requirement.

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

copy	back to summary
public RegisterMap copy()

getIncludeArgumentOops	back to summary
public boolean getIncludeArgumentOops()

getLocation	back to summary
public Address getLocation(VMReg reg)

getLocationPD	back to summary
protected abstract Address getLocationPD(VMReg reg) Platform-dependent getLocation() functionality

getThread	back to summary
public JavaThread getThread()

getUpdateMap	back to summary
public boolean getUpdateMap()

initialize	back to summary
private static void initialize(TypeDataBase db)

initializeFromPD	back to summary
protected abstract void initializeFromPD(RegisterMap map) Platform-dependent initializeFrom() functionality

initializePD	back to summary
protected abstract void initializePD() Platform-dependent initialize() functionality

print	back to summary
public void print()

printOn	back to summary
public void printOn(PrintStream tty)

setIncludeArgumentOops	back to summary
public void setIncludeArgumentOops(boolean f)