StackBrowser (Jikes RVM API)

java.lang.Object
- org.jikesrvm.runtime.StackBrowser

```
public final class StackBrowser
extends Object
```
Use this class to explore the stack. It is sometimes necessary to find out the current context class loader, and other things like that.

Field Summary

Fields
Modifier and Type	Field and Description
`private int`	`currentBytecodeIndex` Bytecode associated with current stack location
`private CompiledMethod`	`currentCompiledMethod` The current compiled method
`private Address`	`currentFramePointer` The frame pointer for the current stack location
`private int`	`currentInlineEncodingIndex` The current inline encoding index for opt compiled methods
`private Offset`	`currentInstructionPointer` The offset of the current instruction within its method
`private RVMMethod`	`currentMethod` Method associated with current stack location

Constructor Summary

Constructors
Constructor and Description

StackBrowser()

Constructors
Constructor and Description
`StackBrowser()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`getBytecodeIndex()`
`ClassLoader`	`getClassLoader()`
`CompiledMethod`	`getCompiledMethod()`
`RVMClass`	`getCurrentClass()`
`int`	`getInlineEncodingIndex()` Get the inline encoding associated with the current stack location.
`RVMMethod`	`getMethod()`
`boolean`	`hasMoreFrames()`
`void`	`init()` Initialise state of browser
`void`	`setBytecodeIndex(int bytecodeIndex)`
`void`	`setCompiledMethod(CompiledMethod cm)`
`void`	`setInlineEncodingIndex(int index)` Set the inline encoding.
`void`	`setMethod(RVMMethod method)`
`void`	`up()` Browse up one frame eliding native frames
`private void`	`upOneFrame()` Browse up one frame failing if we fall off the stack
`private boolean`	`upOneFrameInternal(boolean set)` Browse up one frame

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - currentMethod
```
private RVMMethod currentMethod
```
    Method associated with current stack location
  - currentBytecodeIndex
```
private int currentBytecodeIndex
```
    Bytecode associated with current stack location
  - currentFramePointer
```
private Address currentFramePointer
```
    The frame pointer for the current stack location
  - currentInstructionPointer
```
private Offset currentInstructionPointer
```
    The offset of the current instruction within its method
  - currentCompiledMethod
```
private CompiledMethod currentCompiledMethod
```
    The current compiled method
  - currentInlineEncodingIndex
```
private int currentInlineEncodingIndex
```
    The current inline encoding index for opt compiled methods
- Constructor Detail
  - StackBrowser
```
public StackBrowser()
```
- Method Detail
  - init
```
public void init()
```
    Initialise state of browser
  - upOneFrameInternal
```
private boolean upOneFrameInternal(boolean set)
```
    Browse up one frame
    
    Parameters:
    
    set - should the state of the stack browser be effected?
    
    Returns:
    
    do more frames exist?
  - upOneFrame
```
private void upOneFrame()
```
    Browse up one frame failing if we fall off the stack
  - hasMoreFrames
```
public boolean hasMoreFrames()
```
    Returns:
    
    whether there are more stack frames
  - up
```
public void up()
```
    Browse up one frame eliding native frames
  - setBytecodeIndex
```
public void setBytecodeIndex(int bytecodeIndex)
```
  - setMethod
```
public void setMethod(RVMMethod method)
```
  - setCompiledMethod
```
public void setCompiledMethod(CompiledMethod cm)
```
  - setInlineEncodingIndex
```
public void setInlineEncodingIndex(int index)
```
    Set the inline encoding. This is only necessary for opt compiled methods.
    
    Parameters:
    
    index - the inline encoding index
  - getBytecodeIndex
```
public int getBytecodeIndex()
```
    Returns:
    
    the bytecode index associated with the current stack frame
  - getMethod
```
public RVMMethod getMethod()
```
    Returns:
    
    the method associated with the current stack frame
  - getCompiledMethod
```
public CompiledMethod getCompiledMethod()
```
    Returns:
    
    the compiled method associated with the current stack frame
  - getCurrentClass
```
public RVMClass getCurrentClass()
```
    Returns:
    
    the class of the method associated with the current stack frame
  - getClassLoader
```
public ClassLoader getClassLoader()
```
    Returns:
    
    the class loader of the method associated with the current stack frame
  - getInlineEncodingIndex
```
public int getInlineEncodingIndex()
```
    Get the inline encoding associated with the current stack location. This method is called only by opt compiled methods.
    
    Returns:
    
    the inline encoding associated with the current stack location

Class StackBrowser

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

currentMethod

currentBytecodeIndex

currentFramePointer

currentInstructionPointer

currentCompiledMethod

currentInlineEncodingIndex

Constructor Detail

StackBrowser

Method Detail

init

upOneFrameInternal

upOneFrame

hasMoreFrames

up

setBytecodeIndex

setMethod

setCompiledMethod

setInlineEncodingIndex

getBytecodeIndex

getMethod

getCompiledMethod

getCurrentClass

getClassLoader

getInlineEncodingIndex