268 }
269 
270 inline bool java_lang_invoke_ResolvedMethodName::is_instance(oop obj) {
271   return obj != nullptr && obj->klass() == vmClasses::ResolvedMethodName_klass();
272 }
273 
274 inline bool java_lang_invoke_MethodType::is_instance(oop obj) {
275   return obj != nullptr && obj->klass() == vmClasses::MethodType_klass();
276 }
277 
278 inline bool java_lang_invoke_MethodHandle::is_instance(oop obj) {
279   return obj != nullptr && is_subclass(obj->klass());
280 }
281 
282 inline bool java_lang_Class::is_instance(oop obj) {
283   return obj != nullptr && obj->klass() == vmClasses::Class_klass();
284 }
285 
286 inline Klass* java_lang_Class::as_Klass(oop java_class) {
287   //%note memory_2
288   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
289   Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
290   assert(k == nullptr || k->is_klass(), "type check");
291   return k;
292 }
293 
294 inline bool java_lang_Class::is_primitive(oop java_class) {
295   // should assert:
296   // assert(java_lang_Class::is_instance(java_class), "must be a Class object");
297   bool is_primitive = (java_class->metadata_field(_klass_offset) == nullptr);
298 
299 #ifdef ASSERT
300   // The heapwalker walks through Classes that have had their Klass pointers removed, so can't assert this.
301   // assert(is_primitive == java_class->bool_field(_is_primitive_offset), "must match what we told Java");
302   if (java_class->bool_field(_is_primitive_offset)) {
303     Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
304     assert(k == nullptr || is_java_primitive(ArrayKlass::cast(k)->element_type()),
305         "Should be either the T_VOID primitive or a java primitive");
306   }
307 #endif
308 

268 }
269 
270 inline bool java_lang_invoke_ResolvedMethodName::is_instance(oop obj) {
271   return obj != nullptr && obj->klass() == vmClasses::ResolvedMethodName_klass();
272 }
273 
274 inline bool java_lang_invoke_MethodType::is_instance(oop obj) {
275   return obj != nullptr && obj->klass() == vmClasses::MethodType_klass();
276 }
277 
278 inline bool java_lang_invoke_MethodHandle::is_instance(oop obj) {
279   return obj != nullptr && is_subclass(obj->klass());
280 }
281 
282 inline bool java_lang_Class::is_instance(oop obj) {
283   return obj != nullptr && obj->klass() == vmClasses::Class_klass();
284 }
285 
286 inline Klass* java_lang_Class::as_Klass(oop java_class) {
287   //%note memory_2
288   //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
289   Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
290   assert(k == nullptr || k->is_klass(), "type check");
291   return k;
292 }
293 
294 inline bool java_lang_Class::is_primitive(oop java_class) {
295   // should assert:
296   // assert(java_lang_Class::is_instance(java_class), "must be a Class object");
297   bool is_primitive = (java_class->metadata_field(_klass_offset) == nullptr);
298 
299 #ifdef ASSERT
300   // The heapwalker walks through Classes that have had their Klass pointers removed, so can't assert this.
301   // assert(is_primitive == java_class->bool_field(_is_primitive_offset), "must match what we told Java");
302   if (java_class->bool_field(_is_primitive_offset)) {
303     Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
304     assert(k == nullptr || is_java_primitive(ArrayKlass::cast(k)->element_type()),
305         "Should be either the T_VOID primitive or a java primitive");
306   }
307 #endif
308