In-heap small typed arrays

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2202 matching lines @@
   inline bool HasExternalUint8Elements();
   inline bool HasExternalInt16Elements();
   inline bool HasExternalUint16Elements();
   inline bool HasExternalInt32Elements();
   inline bool HasExternalUint32Elements();
   inline bool HasExternalFloat32Elements();
   inline bool HasExternalFloat64Elements();
 
   inline bool HasFixedTypedArrayElements();
 
+  inline bool HasFixedUint8ClampedElements();
+  inline bool HasFixedArrayElements();
+  inline bool HasFixedInt8Elements();
+  inline bool HasFixedUint8Elements();
+  inline bool HasFixedInt16Elements();
+  inline bool HasFixedUint16Elements();
+  inline bool HasFixedInt32Elements();
+  inline bool HasFixedUint32Elements();
+  inline bool HasFixedFloat32Elements();
+  inline bool HasFixedFloat64Elements();
+
   bool HasFastArgumentsElements();
   bool HasDictionaryArgumentsElements();
   inline SeededNumberDictionary* element_dictionary();  // Gets slow elements.
 
   inline void set_map_and_elements(
       Map* map,
       FixedArrayBase* value,
       WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
 
   // Requires: HasFastElements().
@@ skipping 2732 matching lines @@
 
 class FixedTypedArrayBase: public FixedArrayBase {
  public:
   // Casting:
   static inline FixedTypedArrayBase* cast(Object* obj);
 
   static const int kDataOffset = kHeaderSize;
 
   inline int size();
 
+  // Use with care: returns raw pointer into heap.
+  inline void* DataPtr();
+
+  inline int DataSize();
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FixedTypedArrayBase);
 };
 
 
 template <class Traits>
 class FixedTypedArray: public FixedTypedArrayBase {
  public:
   typedef typename Traits::ElementType ElementType;
   static const InstanceType kInstanceType = Traits::kInstanceType;
 
   // Casting:
   static inline FixedTypedArray<Traits>* cast(Object* obj);
 
   static inline int ElementOffset(int index) {
     return kDataOffset + index * sizeof(ElementType);
   }
 
   static inline int SizeFor(int length) {
     return ElementOffset(length);
   }
 
   inline ElementType get_scalar(int index);
   MUST_USE_RESULT inline MaybeObject* get(int index);
   inline void set(int index, ElementType value);
 
+  static inline ElementType from_int(int value);
+  static inline ElementType from_double(double value);
+
   // This accessor applies the correct conversion from Smi, HeapNumber
   // and undefined.
   MUST_USE_RESULT MaybeObject* SetValue(uint32_t index, Object* value);
 
   static Handle<Object> SetValue(Handle<FixedTypedArray<Traits> > array,
                                  uint32_t index,
                                  Handle<Object> value);
 
   DECLARE_PRINTER(FixedTypedArray)
   DECLARE_VERIFIER(FixedTypedArray)
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FixedTypedArray);
 };
 
 #define FIXED_TYPED_ARRAY_TRAITS(Type, type, TYPE, elementType, size)         \
   class Type##ArrayTraits {                                                   \
     public:                                                                   \
       typedef elementType ElementType;                                        \
       static const InstanceType kInstanceType = FIXED_##TYPE##_ARRAY_TYPE;    \
       static const char* Designator() { return #type " array"; }              \
       static inline MaybeObject* ToObject(Heap* heap, elementType scalar);    \
-      static elementType defaultValue() { return 0; }                         \
+      static inline elementType defaultValue();                               \
   };                                                                          \
                                                                               \
   typedef FixedTypedArray<Type##ArrayTraits> Fixed##Type##Array;
 
 TYPED_ARRAYS(FIXED_TYPED_ARRAY_TRAITS)
 
 #undef FIXED_TYPED_ARRAY_TRAITS
 
 // DeoptimizationInputData is a fixed array used to hold the deoptimization
 // data for code generated by the Hydrogen/Lithium compiler.  It also
@@ skipping 1199 matching lines @@
                                                Descriptor* descriptor);
   MUST_USE_RESULT MaybeObject* CopyAddDescriptor(Descriptor* descriptor,
                                                  TransitionFlag flag);
   MUST_USE_RESULT MaybeObject* CopyInsertDescriptor(Descriptor* descriptor,
                                                     TransitionFlag flag);
   MUST_USE_RESULT MaybeObject* CopyReplaceDescriptor(
       DescriptorArray* descriptors,
       Descriptor* descriptor,
       int index,
       TransitionFlag flag);
+
+  MUST_USE_RESULT MaybeObject* AsElementsKind(ElementsKind kind);
+
   static Handle<Map> AsElementsKind(Handle<Map> map, ElementsKind kind);
-  MUST_USE_RESULT MaybeObject* AsElementsKind(ElementsKind kind);
 
   MUST_USE_RESULT MaybeObject* CopyAsElementsKind(ElementsKind kind,
                                                   TransitionFlag flag);
 
   static Handle<Map> CopyForObserved(Handle<Map> map);
 
   static Handle<Map> CopyNormalized(Handle<Map> map,
                                     PropertyNormalizationMode mode,
                                     NormalizedMapSharingMode sharing);
 
@@ skipping 3669 matching lines @@
 
   // Neutering. Only neuters this typed array.
   void Neuter();
 
   // Casting.
   static inline JSTypedArray* cast(Object* obj);
 
   ExternalArrayType type();
   size_t element_size();
 
+  Handle<JSArrayBuffer> GetBuffer();
+
   // Dispatched behavior.
   DECLARE_PRINTER(JSTypedArray)
   DECLARE_VERIFIER(JSTypedArray)
 
   static const int kLengthOffset = kViewSize + kPointerSize;
   static const int kSize = kLengthOffset + kPointerSize;
 
   static const int kSizeWithInternalFields =
       kSize + v8::ArrayBufferView::kInternalFieldCount * kPointerSize;
 
  private:
+  static Handle<JSArrayBuffer> MaterializeArrayBuffer(
+      Handle<JSTypedArray> typed_array);
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSTypedArray);
 };
 
 
 class JSDataView: public JSArrayBufferView {
  public:
   // Only neuters this DataView
   void Neuter();
 
   // Casting.
@@ skipping 844 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_