jdk.internal.jvmci.hotspot

Class HotSpotStackFrameReference

java.lang.Object

jdk.internal.jvmci.hotspot.HotSpotStackFrameReference

All Implemented Interfaces:

InspectedFrame

public class HotSpotStackFrameReference
extends Object
implements InspectedFrame

Field Summary

Fields

Modifier and Type	Field and Description
private int	bci
private CompilerToVM	compilerToVM
private int	frameNumber
private boolean[]	localIsVirtual
private Object[]	locals
private long	metaspaceMethod
private long	stackPointer

Constructor Summary

Constructors

Constructor and Description
HotSpotStackFrameReference()

Method Summary

Modifier and Type	Method and Description
int	getBytecodeIndex()
int	getFrameNumber()
Object	getLocal(int index) Returns the value of the local at the given index.
ResolvedJavaMethod	getMethod()
long	getStackPointer()
boolean	hasVirtualObjects() Returns true if the stack frame is a compiled stack frame and there are virtual objects anywhere in the current state of the compiled method.
boolean	isMethod(ResolvedJavaMethod method) Checks if the current method is equal to the given method.
boolean	isVirtual(int index) Returns whether the local at the given index is a virtual object, and therefore the object returned by InspectedFrame.getLocal(int) is a copy.
void	materializeVirtualObjects(boolean invalidateCode) This method will materialize all virtual objects, deoptimize the stack frame and make sure that subsequent execution of the deoptimized frame uses the materialized values.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

compilerToVM

private CompilerToVM compilerToVM

stackPointer

private long stackPointer

frameNumber

private int frameNumber

bci

private int bci

metaspaceMethod

private long metaspaceMethod

locals

private Object[] locals

localIsVirtual

private boolean[] localIsVirtual

Constructor Detail

HotSpotStackFrameReference

public HotSpotStackFrameReference()

Method Detail

getStackPointer

public long getStackPointer()

getFrameNumber

public int getFrameNumber()

getLocal

public Object getLocal(int index)

Description copied from interface: InspectedFrame

Returns the value of the local at the given index. Currently only works for object values. This value is a copy iff InspectedFrame.isVirtual(int) is true.

Specified by:

getLocal in interface InspectedFrame

isVirtual

public boolean isVirtual(int index)

Description copied from interface: InspectedFrame

Returns whether the local at the given index is a virtual object, and therefore the object returned by InspectedFrame.getLocal(int) is a copy.

Specified by:

isVirtual in interface InspectedFrame

materializeVirtualObjects

public void materializeVirtualObjects(boolean invalidateCode)

Description copied from interface: InspectedFrame

This method will materialize all virtual objects, deoptimize the stack frame and make sure that subsequent execution of the deoptimized frame uses the materialized values.

Specified by:

materializeVirtualObjects in interface InspectedFrame

getBytecodeIndex

public int getBytecodeIndex()

Specified by:

getBytecodeIndex in interface InspectedFrame

Returns:

the current bytecode index

getMethod

public ResolvedJavaMethod getMethod()

Specified by:

getMethod in interface InspectedFrame

Returns:

the current method

isMethod

public boolean isMethod(ResolvedJavaMethod method)

Description copied from interface: InspectedFrame

Checks if the current method is equal to the given method. This is semantically equivalent to method.equals(getMethod()), but can be implemented more efficiently.

Specified by:

isMethod in interface InspectedFrame

hasVirtualObjects

public boolean hasVirtualObjects()

Description copied from interface: InspectedFrame

Returns true if the stack frame is a compiled stack frame and there are virtual objects anywhere in the current state of the compiled method. This can return true even if InspectedFrame.isVirtual(int) return false for all locals.

Specified by:

hasVirtualObjects in interface InspectedFrame

toString

public String toString()

Overrides:

toString in class Object