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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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1706 inline bool HasExternalShortElements(); | 1706 inline bool HasExternalShortElements(); |
1707 inline bool HasExternalUnsignedShortElements(); | 1707 inline bool HasExternalUnsignedShortElements(); |
1708 inline bool HasExternalIntElements(); | 1708 inline bool HasExternalIntElements(); |
1709 inline bool HasExternalUnsignedIntElements(); | 1709 inline bool HasExternalUnsignedIntElements(); |
1710 inline bool HasExternalFloatElements(); | 1710 inline bool HasExternalFloatElements(); |
1711 inline bool HasExternalDoubleElements(); | 1711 inline bool HasExternalDoubleElements(); |
1712 bool HasFastArgumentsElements(); | 1712 bool HasFastArgumentsElements(); |
1713 bool HasDictionaryArgumentsElements(); | 1713 bool HasDictionaryArgumentsElements(); |
1714 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. | 1714 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. |
1715 | 1715 |
| 1716 inline bool ShouldTrackAllocationInfo(); |
| 1717 |
1716 inline void set_map_and_elements( | 1718 inline void set_map_and_elements( |
1717 Map* map, | 1719 Map* map, |
1718 FixedArrayBase* value, | 1720 FixedArrayBase* value, |
1719 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); | 1721 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); |
1720 | 1722 |
1721 // Requires: HasFastElements(). | 1723 // Requires: HasFastElements(). |
1722 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); | 1724 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); |
1723 | 1725 |
1724 // Collects elements starting at index 0. | 1726 // Collects elements starting at index 0. |
1725 // Undefined values are placed after non-undefined values. | 1727 // Undefined values are placed after non-undefined values. |
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7183 public: | 7185 public: |
7184 DECL_ACCESSORS(payload, Object) | 7186 DECL_ACCESSORS(payload, Object) |
7185 | 7187 |
7186 static inline AllocationSiteInfo* cast(Object* obj); | 7188 static inline AllocationSiteInfo* cast(Object* obj); |
7187 | 7189 |
7188 DECLARE_PRINTER(AllocationSiteInfo) | 7190 DECLARE_PRINTER(AllocationSiteInfo) |
7189 DECLARE_VERIFIER(AllocationSiteInfo) | 7191 DECLARE_VERIFIER(AllocationSiteInfo) |
7190 | 7192 |
7191 // Returns NULL if no AllocationSiteInfo is available for object. | 7193 // Returns NULL if no AllocationSiteInfo is available for object. |
7192 static AllocationSiteInfo* FindForJSObject(JSObject* object); | 7194 static AllocationSiteInfo* FindForJSObject(JSObject* object); |
7193 | 7195 static inline AllocationSiteMode GetMode( |
7194 static AllocationSiteMode GetMode(ElementsKind boilerplate_elements_kind); | 7196 ElementsKind boilerplate_elements_kind); |
7195 static AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); | 7197 static inline AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); |
7196 | 7198 |
7197 static const int kPayloadOffset = HeapObject::kHeaderSize; | 7199 static const int kPayloadOffset = HeapObject::kHeaderSize; |
7198 static const int kSize = kPayloadOffset + kPointerSize; | 7200 static const int kSize = kPayloadOffset + kPointerSize; |
7199 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; | 7201 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; |
7200 | 7202 |
7201 bool GetElementsKindPayload(ElementsKind* kind); | 7203 bool GetElementsKindPayload(ElementsKind* kind); |
7202 private: | 7204 private: |
7203 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); | 7205 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); |
7204 }; | 7206 }; |
7205 | 7207 |
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8605 | 8607 |
8606 private: | 8608 private: |
8607 // Expand the fixed array backing of a fast-case JSArray to at least | 8609 // Expand the fixed array backing of a fast-case JSArray to at least |
8608 // the requested size. | 8610 // the requested size. |
8609 void Expand(int minimum_size_of_backing_fixed_array); | 8611 void Expand(int minimum_size_of_backing_fixed_array); |
8610 | 8612 |
8611 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); | 8613 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); |
8612 }; | 8614 }; |
8613 | 8615 |
8614 | 8616 |
| 8617 MUST_USE_RESULT MaybeObject* CacheInitialJSArrayMaps( |
| 8618 Context* native_context, Map* initial_map); |
| 8619 |
| 8620 |
8615 // JSRegExpResult is just a JSArray with a specific initial map. | 8621 // JSRegExpResult is just a JSArray with a specific initial map. |
8616 // This initial map adds in-object properties for "index" and "input" | 8622 // This initial map adds in-object properties for "index" and "input" |
8617 // properties, as assigned by RegExp.prototype.exec, which allows | 8623 // properties, as assigned by RegExp.prototype.exec, which allows |
8618 // faster creation of RegExp exec results. | 8624 // faster creation of RegExp exec results. |
8619 // This class just holds constants used when creating the result. | 8625 // This class just holds constants used when creating the result. |
8620 // After creation the result must be treated as a JSArray in all regards. | 8626 // After creation the result must be treated as a JSArray in all regards. |
8621 class JSRegExpResult: public JSArray { | 8627 class JSRegExpResult: public JSArray { |
8622 public: | 8628 public: |
8623 // Offsets of object fields. | 8629 // Offsets of object fields. |
8624 static const int kIndexOffset = JSArray::kSize; | 8630 static const int kIndexOffset = JSArray::kSize; |
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9318 } else { | 9324 } else { |
9319 value &= ~(1 << bit_position); | 9325 value &= ~(1 << bit_position); |
9320 } | 9326 } |
9321 return value; | 9327 return value; |
9322 } | 9328 } |
9323 }; | 9329 }; |
9324 | 9330 |
9325 } } // namespace v8::internal | 9331 } } // namespace v8::internal |
9326 | 9332 |
9327 #endif // V8_OBJECTS_H_ | 9333 #endif // V8_OBJECTS_H_ |
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