| // Copyright 2018 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_OBJECTS_PROPERTY_ARRAY_H_ |
| #define V8_OBJECTS_PROPERTY_ARRAY_H_ |
| |
| #include "src/objects/heap-object.h" |
| |
| // Has to be the last include (doesn't have include guards): |
| #include "src/objects/object-macros.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| #include "torque-generated/src/objects/property-array-tq.inc" |
| |
| class PropertyArray |
| : public TorqueGeneratedPropertyArray<PropertyArray, HeapObject> { |
| public: |
| // [length]: length of the array. |
| inline int length() const; |
| inline int length(AcquireLoadTag) const; |
| |
| // This is only used on a newly allocated PropertyArray which |
| // doesn't have an existing hash. |
| inline void initialize_length(int length); |
| |
| inline void SetHash(int hash); |
| inline int Hash() const; |
| |
| inline Tagged<Object> get(int index) const; |
| inline Tagged<Object> get(PtrComprCageBase cage_base, int index) const; |
| inline Tagged<Object> get(int index, SeqCstAccessTag tag) const; |
| inline Tagged<Object> get(PtrComprCageBase cage_base, int index, |
| SeqCstAccessTag tag) const; |
| |
| inline void set(int index, Tagged<Object> value); |
| inline void set(int index, Tagged<Object> value, SeqCstAccessTag tag); |
| // Setter with explicit barrier mode. |
| inline void set(int index, Tagged<Object> value, WriteBarrierMode mode); |
| |
| inline Tagged<Object> Swap(int index, Tagged<Object> value, |
| SeqCstAccessTag tag); |
| inline Tagged<Object> Swap(PtrComprCageBase cage_base, int index, |
| Tagged<Object> value, SeqCstAccessTag tag); |
| |
| inline Tagged<Object> CompareAndSwap(int index, Tagged<Object> expected, |
| Tagged<Object> value, |
| SeqCstAccessTag tag); |
| |
| // Signature must be in sync with FixedArray::CopyElements(). |
| inline static void CopyElements(Isolate* isolate, Tagged<PropertyArray> dst, |
| int dst_index, Tagged<PropertyArray> src, |
| int src_index, int len, |
| WriteBarrierMode mode = UPDATE_WRITE_BARRIER); |
| |
| // Gives access to raw memory which stores the array's data. |
| inline ObjectSlot data_start(); |
| inline ObjectSlot RawFieldOfElementAt(int index); |
| |
| // Garbage collection support. |
| static constexpr int SizeFor(int length) { |
| return kHeaderSize + length * kTaggedSize; |
| } |
| static constexpr int OffsetOfElementAt(int index) { return SizeFor(index); } |
| |
| DECL_PRINTER(PropertyArray) |
| DECL_VERIFIER(PropertyArray) |
| |
| // Garbage collection support. |
| using BodyDescriptor = FlexibleBodyDescriptor<kHeaderSize>; |
| |
| static const int kLengthFieldSize = 10; |
| using LengthField = base::BitField<int, 0, kLengthFieldSize>; |
| static const int kMaxLength = LengthField::kMax; |
| using HashField = base::BitField<int, kLengthFieldSize, |
| kSmiValueSize - kLengthFieldSize - 1>; |
| |
| static const int kNoHashSentinel = 0; |
| |
| private: |
| DECL_INT_ACCESSORS(length_and_hash) |
| |
| DECL_RELEASE_ACQUIRE_INT_ACCESSORS(length_and_hash) |
| |
| TQ_OBJECT_CONSTRUCTORS(PropertyArray) |
| }; |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #include "src/objects/object-macros-undef.h" |
| |
| #endif // V8_OBJECTS_PROPERTY_ARRAY_H_ |