org.jikesrvm.mm.mminterface

Class DebugUtil

java.lang.Object

org.jikesrvm.mm.mminterface.DebugUtil

public class DebugUtil
extends Object

Common debugging utility functions used by various garbage collectors

Field Summary

Fields

Modifier and Type	Field and Description
private static TIB	tibForArrayType
private static TIB	tibForClassType
private static TIB	tibForPrimitiveType

Constructor Summary

Constructors

Constructor and Description
DebugUtil()

Method Summary

Modifier and Type	Method and Description
static boolean	addrInBootImage(Address addr)
(package private) static void	boot(BootRecord theBootRecord)
static void	dumpAllThreadStacks() Dump all threads & their stacks starting at the frame identified by the threads saved contextRegisters (ip & fp fields).
static void	dumpRef(ObjectReference ref)
static boolean	mappedVMRef(ObjectReference ref)
static boolean	validObject(Object ref) Checks if a reference, its TIB pointer and type pointer are all in the heap.
static boolean	validRef(ObjectReference ref)
static boolean	validType(ObjectReference typeAddress) Check if an address appears to point to an instance of RVMType

Methods inherited from class java.lang.Object

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

Field Detail

tibForArrayType

private static TIB tibForArrayType

tibForClassType

private static TIB tibForClassType

tibForPrimitiveType

private static TIB tibForPrimitiveType

Constructor Detail

DebugUtil

public DebugUtil()

Method Detail

boot

static void boot(BootRecord theBootRecord)

validType

public static boolean validType(ObjectReference typeAddress)

Check if an address appears to point to an instance of RVMType

Parameters:

typeAddress - the address to check

Returns:

true if and only if the address appears to be an an instance of RVMType

dumpAllThreadStacks

public static void dumpAllThreadStacks()

Dump all threads & their stacks starting at the frame identified by the threads saved contextRegisters (ip & fp fields).

validObject

public static boolean validObject(Object ref)

Checks if a reference, its TIB pointer and type pointer are all in the heap.

Parameters:

ref - the reference to check

Returns:

true if and only if the reference refers to a valid object

validRef

public static boolean validRef(ObjectReference ref)

mappedVMRef

public static boolean mappedVMRef(ObjectReference ref)

dumpRef

public static void dumpRef(ObjectReference ref)

addrInBootImage

public static boolean addrInBootImage(Address addr)