57 
  58 inline narrowKlass Klass::encode_klass(Klass* v) {
  59   return is_null(v) ? (narrowKlass)0 : encode_klass_not_null(v);
  60 }
  61 
  62 inline Klass* Klass::decode_klass_not_null(narrowKlass v) {
  63   assert(!is_null(v), "narrow klass value can never be zero");
  64   int    shift = Universe::narrow_klass_shift();
  65   Klass* result = (Klass*)(void*)((uintptr_t)Universe::narrow_klass_base() + ((uintptr_t)v << shift));
  66   assert(check_klass_alignment(result), "address not aligned: " INTPTR_FORMAT, p2i((void*) result));
  67   return result;
  68 }
  69 
  70 inline Klass* Klass::decode_klass(narrowKlass v) {
  71   return is_null(v) ? (Klass*)NULL : decode_klass_not_null(v);
  72 }
  73 
  74 inline bool Klass::decode_ptr_is_value_based(narrowKlass v) {
  75         return (v & Universe::oop_metadata_odd_mask()) != 0;
  76 }

  77 inline bool Klass::ptr_is_value_based(Klass* v) {
  78         return ((uintptr_t)v & Universe::oop_metadata_odd_mask()) != 0;
  79 }
  80 
  81 
  82 template <typename T>
  83 bool Klass::is_instanceof_or_null(T element) {
  84   if (oopDesc::is_null(element)) {
  85     return true;
  86   }
  87   oop obj = oopDesc::decode_heap_oop_not_null(element);
  88   return obj->klass()->is_subtype_of(this);
  89 }
  90 
  91 #endif // SHARE_VM_OOPS_KLASS_INLINE_HPP

  57 
  58 inline narrowKlass Klass::encode_klass(Klass* v) {
  59   return is_null(v) ? (narrowKlass)0 : encode_klass_not_null(v);
  60 }
  61 
  62 inline Klass* Klass::decode_klass_not_null(narrowKlass v) {
  63   assert(!is_null(v), "narrow klass value can never be zero");
  64   int    shift = Universe::narrow_klass_shift();
  65   Klass* result = (Klass*)(void*)((uintptr_t)Universe::narrow_klass_base() + ((uintptr_t)v << shift));
  66   assert(check_klass_alignment(result), "address not aligned: " INTPTR_FORMAT, p2i((void*) result));
  67   return result;
  68 }
  69 
  70 inline Klass* Klass::decode_klass(narrowKlass v) {
  71   return is_null(v) ? (Klass*)NULL : decode_klass_not_null(v);
  72 }
  73 
  74 inline bool Klass::decode_ptr_is_value_based(narrowKlass v) {
  75         return (v & Universe::oop_metadata_odd_mask()) != 0;
  76 }
  77 
  78 inline bool Klass::ptr_is_value_based(Klass* v) {
  79         return ((uintptr_t)v & Universe::oop_metadata_odd_mask()) != 0;
  80 }
  81 
  82 
  83 template <typename T>
  84 bool Klass::is_instanceof_or_null(T element) {
  85   if (oopDesc::is_null(element)) {
  86     return true;
  87   }
  88   oop obj = oopDesc::decode_heap_oop_not_null(element);
  89   return obj->klass()->is_subtype_of(this);
  90 }
  91 
  92 #endif // SHARE_VM_OOPS_KLASS_INLINE_HPP