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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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1714 inline bool HasExternalShortElements(); | 1714 inline bool HasExternalShortElements(); |
1715 inline bool HasExternalUnsignedShortElements(); | 1715 inline bool HasExternalUnsignedShortElements(); |
1716 inline bool HasExternalIntElements(); | 1716 inline bool HasExternalIntElements(); |
1717 inline bool HasExternalUnsignedIntElements(); | 1717 inline bool HasExternalUnsignedIntElements(); |
1718 inline bool HasExternalFloatElements(); | 1718 inline bool HasExternalFloatElements(); |
1719 inline bool HasExternalDoubleElements(); | 1719 inline bool HasExternalDoubleElements(); |
1720 bool HasFastArgumentsElements(); | 1720 bool HasFastArgumentsElements(); |
1721 bool HasDictionaryArgumentsElements(); | 1721 bool HasDictionaryArgumentsElements(); |
1722 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. | 1722 inline SeededNumberDictionary* element_dictionary(); // Gets slow elements. |
1723 | 1723 |
| 1724 inline bool ShouldTrackAllocationInfo(); |
| 1725 |
1724 inline void set_map_and_elements( | 1726 inline void set_map_and_elements( |
1725 Map* map, | 1727 Map* map, |
1726 FixedArrayBase* value, | 1728 FixedArrayBase* value, |
1727 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); | 1729 WriteBarrierMode mode = UPDATE_WRITE_BARRIER); |
1728 | 1730 |
1729 // Requires: HasFastElements(). | 1731 // Requires: HasFastElements(). |
1730 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); | 1732 MUST_USE_RESULT inline MaybeObject* EnsureWritableFastElements(); |
1731 | 1733 |
1732 // Collects elements starting at index 0. | 1734 // Collects elements starting at index 0. |
1733 // Undefined values are placed after non-undefined values. | 1735 // Undefined values are placed after non-undefined values. |
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7238 public: | 7240 public: |
7239 DECL_ACCESSORS(payload, Object) | 7241 DECL_ACCESSORS(payload, Object) |
7240 | 7242 |
7241 static inline AllocationSiteInfo* cast(Object* obj); | 7243 static inline AllocationSiteInfo* cast(Object* obj); |
7242 | 7244 |
7243 DECLARE_PRINTER(AllocationSiteInfo) | 7245 DECLARE_PRINTER(AllocationSiteInfo) |
7244 DECLARE_VERIFIER(AllocationSiteInfo) | 7246 DECLARE_VERIFIER(AllocationSiteInfo) |
7245 | 7247 |
7246 // Returns NULL if no AllocationSiteInfo is available for object. | 7248 // Returns NULL if no AllocationSiteInfo is available for object. |
7247 static AllocationSiteInfo* FindForJSObject(JSObject* object); | 7249 static AllocationSiteInfo* FindForJSObject(JSObject* object); |
7248 | 7250 static inline AllocationSiteMode GetMode( |
7249 static AllocationSiteMode GetMode(ElementsKind boilerplate_elements_kind); | 7251 ElementsKind boilerplate_elements_kind); |
7250 static AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); | 7252 static inline AllocationSiteMode GetMode(ElementsKind from, ElementsKind to); |
7251 | 7253 |
7252 static const int kPayloadOffset = HeapObject::kHeaderSize; | 7254 static const int kPayloadOffset = HeapObject::kHeaderSize; |
7253 static const int kSize = kPayloadOffset + kPointerSize; | 7255 static const int kSize = kPayloadOffset + kPointerSize; |
7254 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; | 7256 static const uint32_t kMaximumArrayBytesToPretransition = 8 * 1024; |
7255 | 7257 |
7256 bool GetElementsKindPayload(ElementsKind* kind); | 7258 bool GetElementsKindPayload(ElementsKind* kind); |
7257 private: | 7259 private: |
7258 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); | 7260 DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSiteInfo); |
7259 }; | 7261 }; |
7260 | 7262 |
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8692 | 8694 |
8693 private: | 8695 private: |
8694 // Expand the fixed array backing of a fast-case JSArray to at least | 8696 // Expand the fixed array backing of a fast-case JSArray to at least |
8695 // the requested size. | 8697 // the requested size. |
8696 void Expand(int minimum_size_of_backing_fixed_array); | 8698 void Expand(int minimum_size_of_backing_fixed_array); |
8697 | 8699 |
8698 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); | 8700 DISALLOW_IMPLICIT_CONSTRUCTORS(JSArray); |
8699 }; | 8701 }; |
8700 | 8702 |
8701 | 8703 |
| 8704 MUST_USE_RESULT MaybeObject* CacheInitialJSArrayMaps( |
| 8705 Context* native_context, Map* initial_map); |
| 8706 |
| 8707 |
8702 // JSRegExpResult is just a JSArray with a specific initial map. | 8708 // JSRegExpResult is just a JSArray with a specific initial map. |
8703 // This initial map adds in-object properties for "index" and "input" | 8709 // This initial map adds in-object properties for "index" and "input" |
8704 // properties, as assigned by RegExp.prototype.exec, which allows | 8710 // properties, as assigned by RegExp.prototype.exec, which allows |
8705 // faster creation of RegExp exec results. | 8711 // faster creation of RegExp exec results. |
8706 // This class just holds constants used when creating the result. | 8712 // This class just holds constants used when creating the result. |
8707 // After creation the result must be treated as a JSArray in all regards. | 8713 // After creation the result must be treated as a JSArray in all regards. |
8708 class JSRegExpResult: public JSArray { | 8714 class JSRegExpResult: public JSArray { |
8709 public: | 8715 public: |
8710 // Offsets of object fields. | 8716 // Offsets of object fields. |
8711 static const int kIndexOffset = JSArray::kSize; | 8717 static const int kIndexOffset = JSArray::kSize; |
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9405 } else { | 9411 } else { |
9406 value &= ~(1 << bit_position); | 9412 value &= ~(1 << bit_position); |
9407 } | 9413 } |
9408 return value; | 9414 return value; |
9409 } | 9415 } |
9410 }; | 9416 }; |
9411 | 9417 |
9412 } } // namespace v8::internal | 9418 } } // namespace v8::internal |
9413 | 9419 |
9414 #endif // V8_OBJECTS_H_ | 9420 #endif // V8_OBJECTS_H_ |
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