openjdk jvm 运行时类型

typedef enum oop_type {
  unknown_type,
  instance_type,
  instanceRef_type,
  objArray_type,
  symbol_type,
  klass_type,
  instanceKlass_type,
  method_type,
  constMethod_type,
  methodData_type,
  constantPool_type,
  constantPoolCache_type,
  typeArray_type,
  compiledICHolder_type,
  number_object_types
} object_type;