Class VMConstantPool

java.lang.Object
com.ibm.j9ddr.vm29.j9.VMConstantPool

public final class VMConstantPool extends Object
VMConstant pool value retrieval. The constant pool is referenced by constants from com.ibm.j9ddr.vm29.structure.J9ConstantPool. To find out what type the value is, refer to oti/vmconstantpool.xml, or look into the generated header ./oti/j9vmconstantpool.h.
  • Constructor Details

    • VMConstantPool

      public VMConstantPool()
  • Method Details

    • getClass

      public static com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer getClass(long index) throws CorruptDataException
      Get a class from the constant pool.
      Parameters:
      index - A J9VmconstantpoolConstants index into the constant pool. Must be for a class reference.
      Returns:
      Either the loaded class, or if its not in the constant pool, J9ClassPointer.NULL.
      Throws:
      CorruptDataException - If the CPShape of the index is not a class.
    • getFieldOffset

      public static J9ObjectFieldOffset getFieldOffset(long index) throws CorruptDataException
      Get a field offset from the constant pool.
      Parameters:
      index - A J9VmconstantpoolConstants index into the constant pool. Must be for a static or instance field reference.
      Returns:
      Either the offset to the object, or null if the field's class is not resolved in the constant pool.
      Throws:
      CorruptDataException - If the field cannot be found in the related class or the CP index is not a field reference.