com.oracle.svm.core.genscavenge

Class FramePointerMapWalker

java.lang.Object

com.oracle.svm.core.genscavenge.FramePointerMapWalker

All Implemented Interfaces:

StackFrameVisitor

public class FramePointerMapWalker
extends Object
implements StackFrameVisitor

A StackFrameVisitor that applies an ObjectReferenceVisitor to all the Object references in a frame.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FramePointerMapWalker(ObjectReferenceVisitor objRefVisitor)

Method Summary

Modifier and Type	Method and Description
boolean	visitFrame(org.graalvm.word.Pointer sp, org.graalvm.nativeimage.c.function.CodePointer ip, CodeInfo codeInfo, DeoptimizedFrame deoptimizedFrame) Called for each frame that is visited.

Methods inherited from class java.lang.Object

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

Constructor Detail

FramePointerMapWalker

protected FramePointerMapWalker(ObjectReferenceVisitor objRefVisitor)

Method Detail

visitFrame

public boolean visitFrame(org.graalvm.word.Pointer sp,
                          org.graalvm.nativeimage.c.function.CodePointer ip,
                          CodeInfo codeInfo,
                          DeoptimizedFrame deoptimizedFrame)

Description copied from interface: StackFrameVisitor

Called for each frame that is visited. Note that unless this method is annotated with Uninterruptible or executing within a safepoint, the frame on the stack could be deoptimized at any safepoint check. Nevertheless, the passed codeInfo remains valid for accessing information about the code at the (possibly outdated) instruction pointer (this is ensured by the caller).

Specified by:

visitFrame in interface StackFrameVisitor

Parameters:

sp - The stack pointer of the frame being visited.

ip - The instruction pointer of the frame being visited.

codeInfo - Information on the code at the IP, for use with CodeInfoAccess.

deoptimizedFrame - The information about a deoptimized frame, or null if the frame is not deoptimized.

Returns:

true if visiting should continue, false otherwise.