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
    isClassSignature(char firstChar)
    Queries if a given char is the first character of a reference or value type signature.
    static boolean
    isObsolete(com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer j9class)
     
    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 Object

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

  • Constructor Details

    • J9ClassHelper

      public J9ClassHelper()

  • Method Details

    • 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

    • isClassSignature

      public static boolean isClassSignature(char firstChar)
      Queries if a given char is the first character of a reference or value type signature. Equivalent to J9's IS_CLASS_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