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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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4709 | 4709 |
4710 | 4710 |
4711 // The cache for maps used by normalized (dictionary mode) objects. | 4711 // The cache for maps used by normalized (dictionary mode) objects. |
4712 // Such maps do not have property descriptors, so a typical program | 4712 // Such maps do not have property descriptors, so a typical program |
4713 // needs very limited number of distinct normalized maps. | 4713 // needs very limited number of distinct normalized maps. |
4714 class NormalizedMapCache: public FixedArray { | 4714 class NormalizedMapCache: public FixedArray { |
4715 public: | 4715 public: |
4716 static const int kEntries = 64; | 4716 static const int kEntries = 64; |
4717 | 4717 |
4718 static Handle<Map> Get(Handle<NormalizedMapCache> cache, | 4718 static Handle<Map> Get(Handle<NormalizedMapCache> cache, |
4719 Handle<JSObject> object, | 4719 Handle<Map> fast_map, |
4720 PropertyNormalizationMode mode); | 4720 PropertyNormalizationMode mode); |
4721 | 4721 |
4722 void Clear(); | 4722 void Clear(); |
4723 | 4723 |
4724 // Casting | 4724 // Casting |
4725 static inline NormalizedMapCache* cast(Object* obj); | 4725 static inline NormalizedMapCache* cast(Object* obj); |
4726 | 4726 |
4727 DECLARE_VERIFIER(NormalizedMapCache) | 4727 DECLARE_VERIFIER(NormalizedMapCache) |
4728 }; | 4728 }; |
4729 | 4729 |
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11024 } else { | 11024 } else { |
11025 value &= ~(1 << bit_position); | 11025 value &= ~(1 << bit_position); |
11026 } | 11026 } |
11027 return value; | 11027 return value; |
11028 } | 11028 } |
11029 }; | 11029 }; |
11030 | 11030 |
11031 } } // namespace v8::internal | 11031 } } // namespace v8::internal |
11032 | 11032 |
11033 #endif // V8_OBJECTS_H_ | 11033 #endif // V8_OBJECTS_H_ |
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