jdk.internal.jvmci.code

Class DebugInfo

java.lang.Object

jdk.internal.jvmci.code.DebugInfo

public final class DebugInfo
extends Object

Represents the debugging information for a particular point of execution. This information includes:

• a bytecode position
• a reference map for registers and stack slots in the current frame
• a map from bytecode locals and operand stack slots to their values or locations from which their values can be read
• a map from the registers (in the caller's frame) to the slots where they are saved in the current frame

Field Summary

Fields

Modifier and Type	Field and Description
private BytecodePosition	bytecodePosition
private RegisterSaveLayout	calleeSaveInfo
private ReferenceMap	referenceMap
private VirtualObject[]	virtualObjectMapping

Constructor Summary

Constructors

Constructor and Description
DebugInfo(BytecodePosition codePos)
DebugInfo(BytecodePosition codePos, VirtualObject[] virtualObjectMapping) Creates a new DebugInfo from the given values.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
BytecodeFrame	frame() Gets the deoptimization information for each inlined frame (if available).
BytecodePosition	getBytecodePosition()
RegisterSaveLayout	getCalleeSaveInfo() Gets the map from the registers (in the caller's frame) to the slots where they are saved in the current frame.
ReferenceMap	getReferenceMap()
boolean	hasFrame()
int	hashCode()
void	setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo) Sets the map from the registers (in the caller's frame) to the slots where they are saved in the current frame.
void	setReferenceMap(ReferenceMap referenceMap)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

bytecodePosition

private final BytecodePosition bytecodePosition

referenceMap

private ReferenceMap referenceMap

virtualObjectMapping

private final VirtualObject[] virtualObjectMapping

calleeSaveInfo

private RegisterSaveLayout calleeSaveInfo

Constructor Detail

DebugInfo

public DebugInfo(BytecodePosition codePos,
                 VirtualObject[] virtualObjectMapping)

Creates a new DebugInfo from the given values.

Parameters:

codePos - the code position or frame info

virtualObjectMapping - the mapping of VirtualObjects to their real values

DebugInfo

public DebugInfo(BytecodePosition codePos)

Method Detail

setReferenceMap

public void setReferenceMap(ReferenceMap referenceMap)

hasFrame

public boolean hasFrame()

Returns:

true if this debug information has a frame

frame

public BytecodeFrame frame()

Gets the deoptimization information for each inlined frame (if available).

Returns:

null if no frame de-opt info is available

toString

public String toString()

Overrides:

toString in class Object

getBytecodePosition

public BytecodePosition getBytecodePosition()

Returns:

The code position (including all inlined methods) of this debug info. If this is a BytecodeFrame instance, then it is also the deoptimization information for each inlined frame.

getReferenceMap

public ReferenceMap getReferenceMap()

setCalleeSaveInfo

public void setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo)

Sets the map from the registers (in the caller's frame) to the slots where they are saved in the current frame.

getCalleeSaveInfo

public RegisterSaveLayout getCalleeSaveInfo()

Gets the map from the registers (in the caller's frame) to the slots where they are saved in the current frame. If no such information is available, null is returned.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object