Module openj9.dtfj

Package com.ibm.j9ddr.vm29.pointer.helper

Class J9ClassHelper

java.lang.Object

com.ibm.j9ddr.vm29.pointer.helper.J9ClassHelper

Direct Known Subclasses:

J9ArrayClassHelper

public class J9ClassHelper
extends Object

Constructor Summary

Constructors

Constructor	Description
J9ClassHelper()

Method Summary

Modifier and Type	Method	Description
static boolean	areExtensionsEnabled()
static J9ObjectFieldOffset	checkFieldOffsetCache(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz, String fieldName, String signature)
static UDATA	classDepth(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static UDATA	classDepthAndFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static UDATA	classFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer	currentClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static U32	extendedClassFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static String	formatFullInteractive(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static String	getArrayName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static Iterator<J9ObjectFieldOffset>	getFieldOffsets(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static int	getJavaLangClassModifiers(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)	Returns class modifiers as returned from java.lang.Class.getModifiers()
static String	getJavaName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static com.ibm.j9ddr.vm29.pointer.generated.J9MethodPointer	getMethodFromPCAndClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer localClass, U8Pointer pc)
static String	getName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static int	getRawModifiers(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)	Returns "raw" modifiers
static String	getSignature(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static boolean	hasValidEyeCatcher(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static boolean	isAnonymousClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static boolean	isArrayClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static boolean	isObsolete(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
static boolean	isRefOrValSignature(char firstChar)	Queries if a given char is the first character of a reference or value type signature.
static boolean	isSameOrSuperClassOf(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer superClazz, com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static boolean	isSwappedOut(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static UDATAPointer	oldVTable(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static void	setFieldOffsetCache(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz, J9ObjectFieldOffset offset, String fieldName, String signature)
static UDATA	size(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz, com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer vm)
static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer	superclass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
static UDATAPointer	vTable(com.ibm.j9ddr.vm29.pointer.generated.J9VTableHeaderPointer vTableHeader)
static com.ibm.j9ddr.vm29.pointer.generated.J9VTableHeaderPointer	vTableHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)

Methods declared in class java.lang.Object

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

Constructor Detail

J9ClassHelper

public J9ClassHelper()

Method Detail

isArrayClass

public static boolean isArrayClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                            throws CorruptDataException

Throws:

CorruptDataException

getName

public static String getName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                      throws CorruptDataException

Throws:

CorruptDataException

getSignature

public static String getSignature(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                           throws CorruptDataException

Throws:

CorruptDataException

getArrayName

public static String getArrayName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                           throws CorruptDataException

Throws:

CorruptDataException

getJavaName

public static String getJavaName(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                          throws CorruptDataException

Throws:

CorruptDataException

formatFullInteractive

public static String formatFullInteractive(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)

getFieldOffsets

public static Iterator<J9ObjectFieldOffset> getFieldOffsets(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                                                     throws CorruptDataException

Throws:

CorruptDataException

superclass

public static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer superclass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                                                                      throws CorruptDataException

Throws:

CorruptDataException

checkFieldOffsetCache

public static J9ObjectFieldOffset checkFieldOffsetCache(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz,
                                                        String fieldName,
                                                        String signature)

setFieldOffsetCache

public static void setFieldOffsetCache(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz,
                                       J9ObjectFieldOffset offset,
                                       String fieldName,
                                       String signature)

isSameOrSuperClassOf

public static boolean isSameOrSuperClassOf(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer superClazz,
                                           com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                                    throws CorruptDataException

Throws:

CorruptDataException

vTableHeader

public static com.ibm.j9ddr.vm29.pointer.generated.J9VTableHeaderPointer vTableHeader(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)

vTable

public static UDATAPointer vTable(com.ibm.j9ddr.vm29.pointer.generated.J9VTableHeaderPointer vTableHeader)

oldVTable

public static UDATAPointer oldVTable(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)

size

public static UDATA size(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz,
                         com.ibm.j9ddr.vm29.pointer.generated.J9JavaVMPointer vm)
                  throws CorruptDataException

Throws:

CorruptDataException

getJavaLangClassModifiers

public static int getJavaLangClassModifiers(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                                     throws CorruptDataException

Returns class modifiers as returned from java.lang.Class.getModifiers()

Parameters:

j9class - Class to get modifiers for

Returns:

Modifier flags, as returned from java.lang.Class.getModifiers()

Throws:

CorruptDataException

getRawModifiers

public static int getRawModifiers(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                           throws CorruptDataException

Returns "raw" modifiers

Parameters:

j9class -

Returns:

Throws:

CorruptDataException

classDepthAndFlags

public static UDATA classDepthAndFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                                throws CorruptDataException

Throws:

CorruptDataException

classDepth

public static UDATA classDepth(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                        throws CorruptDataException

Throws:

CorruptDataException

extendedClassFlags

public static U32 extendedClassFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                              throws CorruptDataException

Throws:

CorruptDataException

classFlags

public static UDATA classFlags(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                        throws CorruptDataException

Throws:

CorruptDataException

isObsolete

public static boolean isObsolete(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                          throws CorruptDataException

Throws:

CorruptDataException

currentClass

public static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer currentClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
                                                                        throws CorruptDataException

Throws:

CorruptDataException

getMethodFromPCAndClass

public static com.ibm.j9ddr.vm29.pointer.generated.J9MethodPointer getMethodFromPCAndClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer localClass,
                                                                                           U8Pointer pc)
                                                                                    throws CorruptDataException

Throws:

CorruptDataException

isSwappedOut

public static boolean isSwappedOut(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                            throws CorruptDataException

Throws:

CorruptDataException

hasValidEyeCatcher

public static boolean hasValidEyeCatcher(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                                  throws CorruptDataException

Throws:

CorruptDataException

areExtensionsEnabled

public static boolean areExtensionsEnabled()
                                    throws CorruptDataException

Throws:

CorruptDataException

isAnonymousClass

public static boolean isAnonymousClass(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer clazz)
                                throws CorruptDataException

Throws:

CorruptDataException

isRefOrValSignature

public static boolean isRefOrValSignature(char firstChar)

Queries if a given char is the first character of a reference or value type signature. Equivalent to J9's IS_REF_OR_VAL_SIGNATURE macro.

Parameters:

firstChar - the first character of the signature being checked

Returns:

true if the character indicates the beginning of a reference or value signature, false otherwise