OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // Review notes: | 5 // Review notes: |
6 // | 6 // |
7 // - The use of macros in these inline functions may seem superfluous | 7 // - The use of macros in these inline functions may seem superfluous |
8 // but it is absolutely needed to make sure gcc generates optimal | 8 // but it is absolutely needed to make sure gcc generates optimal |
9 // code. gcc is not happy when attempting to inline too deep. | 9 // code. gcc is not happy when attempting to inline too deep. |
10 // | 10 // |
(...skipping 4679 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
4690 | 4690 |
4691 | 4691 |
4692 bool Map::is_stable() { | 4692 bool Map::is_stable() { |
4693 return !IsUnstable::decode(bit_field3()); | 4693 return !IsUnstable::decode(bit_field3()); |
4694 } | 4694 } |
4695 | 4695 |
4696 | 4696 |
4697 bool Map::has_code_cache() { | 4697 bool Map::has_code_cache() { |
4698 // Code caches are always fixed arrays. The empty fixed array is used as a | 4698 // Code caches are always fixed arrays. The empty fixed array is used as a |
4699 // sentinel for an absent code cache. | 4699 // sentinel for an absent code cache. |
4700 return FixedArray::cast(code_cache())->length() != 0; | 4700 return code_cache()->length() != 0; |
4701 } | 4701 } |
4702 | 4702 |
4703 | 4703 |
4704 bool Map::CanBeDeprecated() { | 4704 bool Map::CanBeDeprecated() { |
4705 int descriptor = LastAdded(); | 4705 int descriptor = LastAdded(); |
4706 for (int i = 0; i <= descriptor; i++) { | 4706 for (int i = 0; i <= descriptor; i++) { |
4707 PropertyDetails details = instance_descriptors()->GetDetails(i); | 4707 PropertyDetails details = instance_descriptors()->GetDetails(i); |
4708 if (details.representation().IsNone()) return true; | 4708 if (details.representation().IsNone()) return true; |
4709 if (details.representation().IsSmi()) return true; | 4709 if (details.representation().IsSmi()) return true; |
4710 if (details.representation().IsDouble()) return true; | 4710 if (details.representation().IsDouble()) return true; |
(...skipping 713 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
5424 | 5424 |
5425 | 5425 |
5426 void Map::SetBackPointer(Object* value, WriteBarrierMode mode) { | 5426 void Map::SetBackPointer(Object* value, WriteBarrierMode mode) { |
5427 DCHECK(instance_type() >= FIRST_JS_RECEIVER_TYPE); | 5427 DCHECK(instance_type() >= FIRST_JS_RECEIVER_TYPE); |
5428 DCHECK((value->IsMap() && GetBackPointer()->IsUndefined())); | 5428 DCHECK((value->IsMap() && GetBackPointer()->IsUndefined())); |
5429 DCHECK(!value->IsMap() || | 5429 DCHECK(!value->IsMap() || |
5430 Map::cast(value)->GetConstructor() == constructor_or_backpointer()); | 5430 Map::cast(value)->GetConstructor() == constructor_or_backpointer()); |
5431 set_constructor_or_backpointer(value, mode); | 5431 set_constructor_or_backpointer(value, mode); |
5432 } | 5432 } |
5433 | 5433 |
5434 | 5434 ACCESSORS(Map, code_cache, FixedArray, kCodeCacheOffset) |
5435 ACCESSORS(Map, code_cache, Object, kCodeCacheOffset) | |
5436 ACCESSORS(Map, dependent_code, DependentCode, kDependentCodeOffset) | 5435 ACCESSORS(Map, dependent_code, DependentCode, kDependentCodeOffset) |
5437 ACCESSORS(Map, weak_cell_cache, Object, kWeakCellCacheOffset) | 5436 ACCESSORS(Map, weak_cell_cache, Object, kWeakCellCacheOffset) |
5438 ACCESSORS(Map, constructor_or_backpointer, Object, | 5437 ACCESSORS(Map, constructor_or_backpointer, Object, |
5439 kConstructorOrBackPointerOffset) | 5438 kConstructorOrBackPointerOffset) |
5440 | 5439 |
5441 | 5440 |
5442 Object* Map::GetConstructor() const { | 5441 Object* Map::GetConstructor() const { |
5443 Object* maybe_constructor = constructor_or_backpointer(); | 5442 Object* maybe_constructor = constructor_or_backpointer(); |
5444 // Follow any back pointers. | 5443 // Follow any back pointers. |
5445 while (maybe_constructor->IsMap()) { | 5444 while (maybe_constructor->IsMap()) { |
(...skipping 2461 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
7907 #undef WRITE_INT64_FIELD | 7906 #undef WRITE_INT64_FIELD |
7908 #undef READ_BYTE_FIELD | 7907 #undef READ_BYTE_FIELD |
7909 #undef WRITE_BYTE_FIELD | 7908 #undef WRITE_BYTE_FIELD |
7910 #undef NOBARRIER_READ_BYTE_FIELD | 7909 #undef NOBARRIER_READ_BYTE_FIELD |
7911 #undef NOBARRIER_WRITE_BYTE_FIELD | 7910 #undef NOBARRIER_WRITE_BYTE_FIELD |
7912 | 7911 |
7913 } // namespace internal | 7912 } // namespace internal |
7914 } // namespace v8 | 7913 } // namespace v8 |
7915 | 7914 |
7916 #endif // V8_OBJECTS_INL_H_ | 7915 #endif // V8_OBJECTS_INL_H_ |
OLD | NEW |