Module openj9.dtfj

Package com.ibm.j9ddr.vm29.j9.stackwalker

Class BaseStackWalkerCallbacks

java.lang.Object

com.ibm.j9ddr.vm29.j9.stackwalker.BaseStackWalkerCallbacks

All Implemented Interfaces:

IStackWalkerCallbacks

public class BaseStackWalkerCallbacks
extends Object
implements IStackWalkerCallbacks

Base implementation of IStackWalkerCallbacks that does performs no-ops for each callback. Provided to make writing implementations of IStackWalkerCallbacks easier

Constructor Summary

Constructors

Constructor	Description
BaseStackWalkerCallbacks()

Method Summary

Modifier and Type	Method	Description
void	fieldSlotWalkFunction(WalkState walkState, ObjectReferencePointer objectSlot, VoidPointer stackLocation)	This callback doesn't exist in the native C.
FrameCallbackResult	frameWalkFunction(WalkState walkState)
void	objectSlotWalkFunction(WalkState walkState, PointerPointer objectSlot, VoidPointer stackLocation)

Methods declared in class java.lang.Object

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

Constructor Details

BaseStackWalkerCallbacks

public BaseStackWalkerCallbacks()

Method Details

frameWalkFunction

public FrameCallbackResult frameWalkFunction(WalkState walkState)

Specified by:

frameWalkFunction in interface IStackWalkerCallbacks

objectSlotWalkFunction

public void objectSlotWalkFunction(WalkState walkState,
 PointerPointer objectSlot,
 VoidPointer stackLocation)

Specified by:

objectSlotWalkFunction in interface IStackWalkerCallbacks

fieldSlotWalkFunction

public void fieldSlotWalkFunction(WalkState walkState,
 ObjectReferencePointer objectSlot,
 VoidPointer stackLocation)

Description copied from interface: IStackWalkerCallbacks

This callback doesn't exist in the native C. It's purpose in DDR is passing back field slots in stack-allocated objects (which would be incorrectly handled by a PointerPointer)

Specified by:

fieldSlotWalkFunction in interface IStackWalkerCallbacks