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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_OBJECTS_H_ | 5 #ifndef V8_OBJECTS_H_ |
6 #define V8_OBJECTS_H_ | 6 #define V8_OBJECTS_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 | 9 |
10 #include "src/allocation.h" | 10 #include "src/allocation.h" |
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10235 | 10235 |
10236 | 10236 |
10237 class JSArrayBuffer: public JSObject { | 10237 class JSArrayBuffer: public JSObject { |
10238 public: | 10238 public: |
10239 // [backing_store]: backing memory for this array | 10239 // [backing_store]: backing memory for this array |
10240 DECL_ACCESSORS(backing_store, void) | 10240 DECL_ACCESSORS(backing_store, void) |
10241 | 10241 |
10242 // [byte_length]: length in bytes | 10242 // [byte_length]: length in bytes |
10243 DECL_ACCESSORS(byte_length, Object) | 10243 DECL_ACCESSORS(byte_length, Object) |
10244 | 10244 |
10245 // [flags] | 10245 inline uint32_t bit_field() const; |
10246 DECL_ACCESSORS(flag, Smi) | 10246 inline void set_bit_field(uint32_t bits); |
10247 | 10247 |
10248 inline bool is_external(); | 10248 inline bool is_external(); |
10249 inline void set_is_external(bool value); | 10249 inline void set_is_external(bool value); |
10250 | 10250 |
10251 inline bool should_be_freed(); | 10251 inline bool should_be_freed(); |
10252 inline void set_should_be_freed(bool value); | 10252 inline void set_should_be_freed(bool value); |
10253 | 10253 |
10254 inline bool is_neuterable(); | 10254 inline bool is_neuterable(); |
10255 inline void set_is_neuterable(bool value); | 10255 inline void set_is_neuterable(bool value); |
10256 | 10256 |
10257 inline bool was_neutered(); | 10257 inline bool was_neutered(); |
10258 inline void set_was_neutered(bool value); | 10258 inline void set_was_neutered(bool value); |
10259 | 10259 |
10260 // [weak_next]: linked list of array buffers. | 10260 // [weak_next]: linked list of array buffers. |
10261 DECL_ACCESSORS(weak_next, Object) | 10261 DECL_ACCESSORS(weak_next, Object) |
10262 | 10262 |
10263 DECLARE_CAST(JSArrayBuffer) | 10263 DECLARE_CAST(JSArrayBuffer) |
10264 | 10264 |
10265 void Neuter(); | 10265 void Neuter(); |
10266 | 10266 |
10267 // Dispatched behavior. | 10267 // Dispatched behavior. |
10268 DECLARE_PRINTER(JSArrayBuffer) | 10268 DECLARE_PRINTER(JSArrayBuffer) |
10269 DECLARE_VERIFIER(JSArrayBuffer) | 10269 DECLARE_VERIFIER(JSArrayBuffer) |
10270 | 10270 |
10271 static const int kBackingStoreOffset = JSObject::kHeaderSize; | 10271 static const int kBackingStoreOffset = JSObject::kHeaderSize; |
10272 static const int kByteLengthOffset = kBackingStoreOffset + kPointerSize; | 10272 static const int kByteLengthOffset = kBackingStoreOffset + kPointerSize; |
10273 static const int kFlagOffset = kByteLengthOffset + kPointerSize; | 10273 static const int kBitFieldOffset = kByteLengthOffset + kPointerSize; |
10274 static const int kWeakNextOffset = kFlagOffset + kPointerSize; | 10274 static const int kWeakNextOffset = kBitFieldOffset + kPointerSize; |
10275 static const int kSize = kWeakNextOffset + kPointerSize; | 10275 static const int kSize = kWeakNextOffset + kPointerSize; |
10276 | 10276 |
10277 static const int kSizeWithInternalFields = | 10277 static const int kSizeWithInternalFields = |
10278 kSize + v8::ArrayBuffer::kInternalFieldCount * kPointerSize; | 10278 kSize + v8::ArrayBuffer::kInternalFieldCount * kPointerSize; |
10279 | 10279 |
10280 // Bit position in a flag | 10280 class IsExternal : public BitField<bool, 1, 1> {}; |
10281 static const int kIsExternalBit = 0; | 10281 class ShouldBeFreed : public BitField<bool, 2, 1> {}; |
10282 static const int kShouldBeFreed = 1; | 10282 class IsNeuterable : public BitField<bool, 3, 1> {}; |
10283 static const int kIsNeuterableBit = 2; | 10283 class WasNeutered : public BitField<bool, 4, 1> {}; |
10284 static const int kWasNeuteredBit = 3; | |
10285 | 10284 |
10286 private: | 10285 private: |
10287 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArrayBuffer); | 10286 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArrayBuffer); |
10288 }; | 10287 }; |
10289 | 10288 |
10290 | 10289 |
10291 class JSArrayBufferView: public JSObject { | 10290 class JSArrayBufferView: public JSObject { |
10292 public: | 10291 public: |
10293 // [buffer]: ArrayBuffer that this typed array views. | 10292 // [buffer]: ArrayBuffer that this typed array views. |
10294 DECL_ACCESSORS(buffer, Object) | 10293 DECL_ACCESSORS(buffer, Object) |
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11103 } else { | 11102 } else { |
11104 value &= ~(1 << bit_position); | 11103 value &= ~(1 << bit_position); |
11105 } | 11104 } |
11106 return value; | 11105 return value; |
11107 } | 11106 } |
11108 }; | 11107 }; |
11109 | 11108 |
11110 } } // namespace v8::internal | 11109 } } // namespace v8::internal |
11111 | 11110 |
11112 #endif // V8_OBJECTS_H_ | 11111 #endif // V8_OBJECTS_H_ |
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