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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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5498 MUST_USE_RESULT MaybeObject* Copy(); | 5498 MUST_USE_RESULT MaybeObject* Copy(); |
5499 | 5499 |
5500 // Returns the next free property index (only valid for FAST MODE). | 5500 // Returns the next free property index (only valid for FAST MODE). |
5501 int NextFreePropertyIndex(); | 5501 int NextFreePropertyIndex(); |
5502 | 5502 |
5503 // Returns the number of properties described in instance_descriptors | 5503 // Returns the number of properties described in instance_descriptors |
5504 // filtering out properties with the specified attributes. | 5504 // filtering out properties with the specified attributes. |
5505 int NumberOfDescribedProperties(DescriptorFlag which = OWN_DESCRIPTORS, | 5505 int NumberOfDescribedProperties(DescriptorFlag which = OWN_DESCRIPTORS, |
5506 PropertyAttributes filter = NONE); | 5506 PropertyAttributes filter = NONE); |
5507 | 5507 |
| 5508 // Returns the number of slots allocated for the initial properties |
| 5509 // backing storage for instances of this map. |
| 5510 int InitialPropertiesLength() { |
| 5511 return pre_allocated_property_fields() + unused_property_fields() - |
| 5512 inobject_properties(); |
| 5513 } |
| 5514 |
5508 // Casting. | 5515 // Casting. |
5509 static inline Map* cast(Object* obj); | 5516 static inline Map* cast(Object* obj); |
5510 | 5517 |
5511 // Locate an accessor in the instance descriptor. | 5518 // Locate an accessor in the instance descriptor. |
5512 AccessorDescriptor* FindAccessor(Name* name); | 5519 AccessorDescriptor* FindAccessor(Name* name); |
5513 | 5520 |
5514 // Code cache operations. | 5521 // Code cache operations. |
5515 | 5522 |
5516 // Clears the code cache. | 5523 // Clears the code cache. |
5517 inline void ClearCodeCache(Heap* heap); | 5524 inline void ClearCodeCache(Heap* heap); |
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9812 } else { | 9819 } else { |
9813 value &= ~(1 << bit_position); | 9820 value &= ~(1 << bit_position); |
9814 } | 9821 } |
9815 return value; | 9822 return value; |
9816 } | 9823 } |
9817 }; | 9824 }; |
9818 | 9825 |
9819 } } // namespace v8::internal | 9826 } } // namespace v8::internal |
9820 | 9827 |
9821 #endif // V8_OBJECTS_H_ | 9828 #endif // V8_OBJECTS_H_ |
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