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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1731 inline bool HasExternalShortElements(); | 1731 inline bool HasExternalShortElements(); |
1732 inline bool HasExternalUnsignedShortElements(); | 1732 inline bool HasExternalUnsignedShortElements(); |
1733 inline bool HasExternalIntElements(); | 1733 inline bool HasExternalIntElements(); |
1734 inline bool HasExternalUnsignedIntElements(); | 1734 inline bool HasExternalUnsignedIntElements(); |
1735 inline bool HasExternalFloatElements(); | 1735 inline bool HasExternalFloatElements(); |
1736 inline bool HasExternalDoubleElements(); | 1736 inline bool HasExternalDoubleElements(); |
1737 bool HasFastArgumentsElements(); | 1737 bool HasFastArgumentsElements(); |
1738 bool HasDictionaryArgumentsElements(); | 1738 bool HasDictionaryArgumentsElements(); |
1739 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. | 1739 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. |
1740 | 1740 |
| 1741 inline bool ShouldTrackAllocationInfo(); |
| 1742 |
1741 inline void set_map_and_elements( | 1743 inline void set_map_and_elements( |
1742 Map* map, | 1744 Map* map, |
1743 FixedArrayBase* value, | 1745 FixedArrayBase* value, |
1744 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); | 1746 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); |
1745 | 1747 |
1746 // Requires: HasFastElements(). | 1748 // Requires: HasFastElements(). |
1747 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); | 1749 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); |
1748 | 1750 |
1749 // Collects elements starting at index 0. | 1751 // Collects elements starting at index 0. |
1750 // Undefined values are placed after non-undefined values. | 1752 // Undefined values are placed after non-undefined values. |
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7263 public: | 7265 public: |
7264 DECL_ACCESSORS(payload, Object) | 7266 DECL_ACCESSORS(payload, Object) |
7265 | 7267 |
7266 static inline AllocationSiteInfo* cast(Object* obj); | 7268 static inline AllocationSiteInfo* cast(Object* obj); |
7267 | 7269 |
7268 DECLARE_PRINTER(AllocationSiteInfo) | 7270 DECLARE_PRINTER(AllocationSiteInfo) |
7269 DECLARE_VERIFIER(AllocationSiteInfo) | 7271 DECLARE_VERIFIER(AllocationSiteInfo) |
7270 | 7272 |
7271 // Returns NULL if no AllocationSiteInfo is available for object. | 7273 // Returns NULL if no AllocationSiteInfo is available for object. |
7272 static AllocationSiteInfo* FindForJSObject(JSObject* object); | 7274 static AllocationSiteInfo* FindForJSObject(JSObject* object); |
7273 | 7275 static inline AllocationSiteMode GetMode( |
7274 static AllocationSiteMode GetMode(ElementsKind boilerplate_elements_kind); | 7276 ElementsKind boilerplate_elements_kind); |
7275 static AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); | 7277 static inline AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); |
7276 | 7278 |
7277 static const int kPayloadOffset = HeapObject::kHeaderSize; | 7279 static const int kPayloadOffset = HeapObject::kHeaderSize; |
7278 static const int kSize = kPayloadOffset + kPointerSize; | 7280 static const int kSize = kPayloadOffset + kPointerSize; |
7279 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; | 7281 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; |
7280 | 7282 |
7281 bool GetElementsKindPayload(ElementsKind* kind); | 7283 bool GetElementsKindPayload(ElementsKind* kind); |
7282 private: | 7284 private: |
7283 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); | 7285 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); |
7284 }; | 7286 }; |
7285 | 7287 |
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8717 | 8719 |
8718 private: | 8720 private: |
8719 // Expand the fixed array backing of a fast-case JSArray to at least | 8721 // Expand the fixed array backing of a fast-case JSArray to at least |
8720 // the requested size. | 8722 // the requested size. |
8721 void Expand(int minimum_size_of_backing_fixed_array); | 8723 void Expand(int minimum_size_of_backing_fixed_array); |
8722 | 8724 |
8723 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); | 8725 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); |
8724 }; | 8726 }; |
8725 | 8727 |
8726 | 8728 |
| 8729 MUST_USE_RESULT MaybeObject* CacheInitialJSArrayMaps( |
| 8730 Context* native_context, Map* initial_map); |
| 8731 |
| 8732 |
8727 // JSRegExpResult is just a JSArray with a specific initial map. | 8733 // JSRegExpResult is just a JSArray with a specific initial map. |
8728 // This initial map adds in-object properties for "index" and "input" | 8734 // This initial map adds in-object properties for "index" and "input" |
8729 // properties, as assigned by RegExp.prototype.exec, which allows | 8735 // properties, as assigned by RegExp.prototype.exec, which allows |
8730 // faster creation of RegExp exec results. | 8736 // faster creation of RegExp exec results. |
8731 // This class just holds constants used when creating the result. | 8737 // This class just holds constants used when creating the result. |
8732 // After creation the result must be treated as a JSArray in all regards. | 8738 // After creation the result must be treated as a JSArray in all regards. |
8733 class JSRegExpResult: public JSArray { | 8739 class JSRegExpResult: public JSArray { |
8734 public: | 8740 public: |
8735 // Offsets of object fields. | 8741 // Offsets of object fields. |
8736 static const int kIndexOffset = JSArray::kSize; | 8742 static const int kIndexOffset = JSArray::kSize; |
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9430 } else { | 9436 } else { |
9431 value &= ~(1 << bit_position); | 9437 value &= ~(1 << bit_position); |
9432 } | 9438 } |
9433 return value; | 9439 return value; |
9434 } | 9440 } |
9435 }; | 9441 }; |
9436 | 9442 |
9437 } } // namespace v8::internal | 9443 } } // namespace v8::internal |
9438 | 9444 |
9439 #endif // V8_OBJECTS_H_ | 9445 #endif // V8_OBJECTS_H_ |
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