Module openj9.dtfj

Package com.ibm.dtfj.java.j9

Class JavaArrayClass

java.lang.Object

com.ibm.dtfj.java.j9.JavaAbstractClass

com.ibm.dtfj.java.j9.JavaArrayClass

All Implemented Interfaces:

JavaClass

public class JavaArrayClass
extends JavaAbstractClass

Field Summary

Fields declared in class com.ibm.dtfj.java.j9.JavaAbstractClass

_classPointer, _javaVM

Fields declared in interface com.ibm.dtfj.java.JavaClass

MODIFIERS_UNAVAILABLE

Constructor Summary

Constructors

Constructor	Description
JavaArrayClass(JavaRuntime runtime, ImagePointer pointer, int modifiers, int flagOffset, int sizeOffset, int bytesForSize, int firstElementOffset, long leafClassID, int dimension, long loaderID, ImagePointer objectID, int hashcodeSlot)

Method Summary

Modifier and Type	Method	Description
int	getBytesPerElement(int refFieldSize)	Looks up the class name of the child elements to determine the size of one element
int	getFirstElementOffset()
JavaClass	getLeafClass()
int	getNumberOfSizeBytes()
int	getSizeOffset()

Methods declared in class com.ibm.dtfj.java.j9.JavaAbstractClass

addClassLoaderReference, addClassObjectReference, addInterfaceName, addSuperclassReference, getHashcodeSlotSize, getInstanceSize, readFlagsFromInstance

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.dtfj.java.JavaClass

equals, getClassLoader, getComponentType, getConstantPoolReferences, getDeclaredFields, getDeclaredMethods, getID, getInstanceSize, getInterfaces, getModifiers, getName, getObject, getProtectionDomain, getReferences, getSuperclass, hashCode, isArray

Constructor Detail

JavaArrayClass

public JavaArrayClass(JavaRuntime runtime,
                      ImagePointer pointer,
                      int modifiers,
                      int flagOffset,
                      int sizeOffset,
                      int bytesForSize,
                      int firstElementOffset,
                      long leafClassID,
                      int dimension,
                      long loaderID,
                      ImagePointer objectID,
                      int hashcodeSlot)

Method Detail

getLeafClass

public JavaClass getLeafClass()

getBytesPerElement

public int getBytesPerElement(int refFieldSize)
                       throws CorruptDataException

Looks up the class name of the child elements to determine the size of one element

Parameters:

refFieldSize - The size of reference fields (fj9object_t) in the heap of the object instance we are sizing

Returns:

The size of one element, in bytes

Throws:

CorruptDataException

getFirstElementOffset

public int getFirstElementOffset()

Returns:

getSizeOffset

public int getSizeOffset()

Returns:

The offset into an array where the length (in elements) is found

getNumberOfSizeBytes

public int getNumberOfSizeBytes()

Returns:

The number of bytes to read from the object header as the size field