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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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| 6391 // Returns a non-deprecated version of the input. If the input was not | 6391 // Returns a non-deprecated version of the input. If the input was not |
| 6392 // deprecated, it is directly returned. Otherwise, the non-deprecated version | 6392 // deprecated, it is directly returned. Otherwise, the non-deprecated version |
| 6393 // is found by re-transitioning from the root of the transition tree using the | 6393 // is found by re-transitioning from the root of the transition tree using the |
| 6394 // descriptor array of the map. Returns NULL if no updated map is found. | 6394 // descriptor array of the map. Returns NULL if no updated map is found. |
| 6395 // This method also applies any pending migrations along the prototype chain. | 6395 // This method also applies any pending migrations along the prototype chain. |
| 6396 static Handle<Map> CurrentMapForDeprecated(Handle<Map> map); | 6396 static Handle<Map> CurrentMapForDeprecated(Handle<Map> map); |
| 6397 // Same as above, but does not touch the prototype chain. | 6397 // Same as above, but does not touch the prototype chain. |
| 6398 static Handle<Map> CurrentMapForDeprecatedInternal(Handle<Map> map); | 6398 static Handle<Map> CurrentMapForDeprecatedInternal(Handle<Map> map); |
| 6399 | 6399 |
| 6400 static Handle<Map> CopyDropDescriptors(Handle<Map> map); | 6400 static Handle<Map> CopyDropDescriptors(Handle<Map> map); |
| 6401 static Handle<Map> CopyReplaceDescriptors( | |
| 6402 Handle<Map> map, | |
| 6403 Handle<DescriptorArray> descriptors, | |
| 6404 TransitionFlag flag, | |
| 6405 Handle<Name> name, | |
| 6406 SimpleTransitionFlag simple_flag = FULL_TRANSITION); | |
| 6407 static Handle<Map> CopyReplaceDescriptors( | |
| 6408 Handle<Map> map, | |
| 6409 Handle<DescriptorArray> descriptors, | |
| 6410 TransitionFlag flag, | |
| 6411 SimpleTransitionFlag simple_flag = FULL_TRANSITION); | |
| 6412 static Handle<Map> CopyInsertDescriptor(Handle<Map> map, | 6401 static Handle<Map> CopyInsertDescriptor(Handle<Map> map, |
| 6413 Descriptor* descriptor, | 6402 Descriptor* descriptor, |
| 6414 TransitionFlag flag); | 6403 TransitionFlag flag); |
| 6415 static Handle<Map> CopyReplaceDescriptor(Handle<Map> map, | 6404 static Handle<Map> CopyReplaceDescriptor(Handle<Map> map, |
| 6416 Handle<DescriptorArray> descriptors, | 6405 Handle<DescriptorArray> descriptors, |
| 6417 Descriptor* descriptor, | 6406 Descriptor* descriptor, |
| 6418 int index, | 6407 int index, |
| 6419 TransitionFlag flag); | 6408 TransitionFlag flag); |
| 6420 | 6409 |
| 6421 MUST_USE_RESULT static MaybeHandle<Map> CopyWithField( | 6410 MUST_USE_RESULT static MaybeHandle<Map> CopyWithField( |
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| 6434 TransitionFlag flag); | 6423 TransitionFlag flag); |
| 6435 | 6424 |
| 6436 static Handle<Map> AsElementsKind(Handle<Map> map, ElementsKind kind); | 6425 static Handle<Map> AsElementsKind(Handle<Map> map, ElementsKind kind); |
| 6437 | 6426 |
| 6438 static Handle<Map> CopyAsElementsKind(Handle<Map> map, | 6427 static Handle<Map> CopyAsElementsKind(Handle<Map> map, |
| 6439 ElementsKind kind, | 6428 ElementsKind kind, |
| 6440 TransitionFlag flag); | 6429 TransitionFlag flag); |
| 6441 | 6430 |
| 6442 static Handle<Map> CopyForObserved(Handle<Map> map); | 6431 static Handle<Map> CopyForObserved(Handle<Map> map); |
| 6443 | 6432 |
| 6433 static Handle<Map> CopyForFreeze(Handle<Map> map); |
| 6434 |
| 6444 static Handle<Map> CopyNormalized(Handle<Map> map, | 6435 static Handle<Map> CopyNormalized(Handle<Map> map, |
| 6445 PropertyNormalizationMode mode, | 6436 PropertyNormalizationMode mode, |
| 6446 NormalizedMapSharingMode sharing); | 6437 NormalizedMapSharingMode sharing); |
| 6447 | 6438 |
| 6448 inline void AppendDescriptor(Descriptor* desc); | 6439 inline void AppendDescriptor(Descriptor* desc); |
| 6449 | 6440 |
| 6450 // Returns a copy of the map, with all transitions dropped from the | 6441 // Returns a copy of the map, with all transitions dropped from the |
| 6451 // instance descriptors. | 6442 // instance descriptors. |
| 6452 static Handle<Map> Copy(Handle<Map> map); | 6443 static Handle<Map> Copy(Handle<Map> map); |
| 6453 static Handle<Map> Create(Handle<JSFunction> constructor, | 6444 static Handle<Map> Create(Handle<JSFunction> constructor, |
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| 6679 static Handle<Map> ShareDescriptor(Handle<Map> map, | 6670 static Handle<Map> ShareDescriptor(Handle<Map> map, |
| 6680 Handle<DescriptorArray> descriptors, | 6671 Handle<DescriptorArray> descriptors, |
| 6681 Descriptor* descriptor); | 6672 Descriptor* descriptor); |
| 6682 static Handle<Map> CopyInstallDescriptors( | 6673 static Handle<Map> CopyInstallDescriptors( |
| 6683 Handle<Map> map, | 6674 Handle<Map> map, |
| 6684 int new_descriptor, | 6675 int new_descriptor, |
| 6685 Handle<DescriptorArray> descriptors); | 6676 Handle<DescriptorArray> descriptors); |
| 6686 static Handle<Map> CopyAddDescriptor(Handle<Map> map, | 6677 static Handle<Map> CopyAddDescriptor(Handle<Map> map, |
| 6687 Descriptor* descriptor, | 6678 Descriptor* descriptor, |
| 6688 TransitionFlag flag); | 6679 TransitionFlag flag); |
| 6680 static Handle<Map> CopyReplaceDescriptors( |
| 6681 Handle<Map> map, |
| 6682 Handle<DescriptorArray> descriptors, |
| 6683 TransitionFlag flag, |
| 6684 MaybeHandle<Name> maybe_name, |
| 6685 SimpleTransitionFlag simple_flag = FULL_TRANSITION); |
| 6689 | 6686 |
| 6690 // Zaps the contents of backing data structures. Note that the | 6687 // Zaps the contents of backing data structures. Note that the |
| 6691 // heap verifier (i.e. VerifyMarkingVisitor) relies on zapping of objects | 6688 // heap verifier (i.e. VerifyMarkingVisitor) relies on zapping of objects |
| 6692 // holding weak references when incremental marking is used, because it also | 6689 // holding weak references when incremental marking is used, because it also |
| 6693 // iterates over objects that are otherwise unreachable. | 6690 // iterates over objects that are otherwise unreachable. |
| 6694 // In general we only want to call these functions in release mode when | 6691 // In general we only want to call these functions in release mode when |
| 6695 // heap verification is turned on. | 6692 // heap verification is turned on. |
| 6696 void ZapPrototypeTransitions(); | 6693 void ZapPrototypeTransitions(); |
| 6697 void ZapTransitions(); | 6694 void ZapTransitions(); |
| 6698 | 6695 |
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| 11047 } else { | 11044 } else { |
| 11048 value &= ~(1 << bit_position); | 11045 value &= ~(1 << bit_position); |
| 11049 } | 11046 } |
| 11050 return value; | 11047 return value; |
| 11051 } | 11048 } |
| 11052 }; | 11049 }; |
| 11053 | 11050 |
| 11054 } } // namespace v8::internal | 11051 } } // namespace v8::internal |
| 11055 | 11052 |
| 11056 #endif // V8_OBJECTS_H_ | 11053 #endif // V8_OBJECTS_H_ |
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