com.oracle.svm.core.deopt

Class DeoptimizedFrame.VirtualFrame

java.lang.Object

com.oracle.svm.core.deopt.DeoptimizedFrame.VirtualFrame

Enclosing class:

DeoptimizedFrame

public static class DeoptimizedFrame.VirtualFrame
extends Object

Heap-based representation of a future baseline-compiled stack frame, i.e., the intermediate representation between deoptimization of an optimized frame and the stack-frame rewriting.

Field Summary

Fields

Modifier and Type	Field and Description
protected DeoptimizedFrame.VirtualFrame	caller
protected FrameInfoQueryResult	frameInfo
protected com.oracle.svm.core.deopt.DeoptimizedFrame.ReturnAddress	returnAddress The program counter where execution continuous.
protected com.oracle.svm.core.deopt.DeoptimizedFrame.SavedBasePointer	savedBasePointer The saved base pointer for the target frame, or null if the architecture does not use base pointers.
protected com.oracle.svm.core.deopt.DeoptimizedFrame.ConstantEntry[]	values The local variables and expression stack value of this frame.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	VirtualFrame(FrameInfoQueryResult frameInfo)

Method Summary

Modifier and Type	Method and Description
DeoptimizedFrame.VirtualFrame	getCaller() The caller frame of this frame, or null if this is the outermost frame.
jdk.vm.ci.meta.JavaConstant	getConstant(int index) Returns the value of the local variable or expression stack value with the given index.
FrameInfoQueryResult	getFrameInfo() The deoptimization metadata for this frame, i.e., the metadata of the baseline-compiled deoptimization target method.

Methods inherited from class java.lang.Object

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

Field Detail

frameInfo

protected final FrameInfoQueryResult frameInfo

caller

protected DeoptimizedFrame.VirtualFrame caller

returnAddress

protected com.oracle.svm.core.deopt.DeoptimizedFrame.ReturnAddress returnAddress

The program counter where execution continuous.

savedBasePointer

protected com.oracle.svm.core.deopt.DeoptimizedFrame.SavedBasePointer savedBasePointer

The saved base pointer for the target frame, or null if the architecture does not use base pointers.

values

protected final com.oracle.svm.core.deopt.DeoptimizedFrame.ConstantEntry[] values

The local variables and expression stack value of this frame. Local variables that are unused at the deoptimization point are null.

Constructor Detail

VirtualFrame

protected VirtualFrame(FrameInfoQueryResult frameInfo)

Method Detail

getCaller

public DeoptimizedFrame.VirtualFrame getCaller()

The caller frame of this frame, or null if this is the outermost frame.

getFrameInfo

public FrameInfoQueryResult getFrameInfo()

The deoptimization metadata for this frame, i.e., the metadata of the baseline-compiled deoptimization target method.

getConstant

public jdk.vm.ci.meta.JavaConstant getConstant(int index)

Returns the value of the local variable or expression stack value with the given index. Expression stack values are after all local variables.