OLD | NEW |
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 |
(...skipping 4404 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
4415 } | 4415 } |
4416 | 4416 |
4417 | 4417 |
4418 void Map::set_transitions(TransitionArray* transition_array, | 4418 void Map::set_transitions(TransitionArray* transition_array, |
4419 WriteBarrierMode mode) { | 4419 WriteBarrierMode mode) { |
4420 // Transition arrays are not shared. When one is replaced, it should not | 4420 // Transition arrays are not shared. When one is replaced, it should not |
4421 // keep referenced objects alive, so we zap it. | 4421 // keep referenced objects alive, so we zap it. |
4422 // When there is another reference to the array somewhere (e.g. a handle), | 4422 // When there is another reference to the array somewhere (e.g. a handle), |
4423 // not zapping turns from a waste of memory into a source of crashes. | 4423 // not zapping turns from a waste of memory into a source of crashes. |
4424 if (HasTransitionArray()) { | 4424 if (HasTransitionArray()) { |
| 4425 #ifdef DEBUG |
| 4426 for (int i = 0; i < transitions()->number_of_transitions(); i++) { |
| 4427 Map* target = transitions()->GetTarget(i); |
| 4428 if (target->instance_descriptors() == instance_descriptors()) { |
| 4429 Name* key = transitions()->GetKey(i); |
| 4430 int new_target_index = transition_array->Search(key); |
| 4431 ASSERT(new_target_index != TransitionArray::kNotFound); |
| 4432 ASSERT(transition_array->GetTarget(new_target_index) == target); |
| 4433 } |
| 4434 } |
| 4435 #endif |
4425 ASSERT(transitions() != transition_array); | 4436 ASSERT(transitions() != transition_array); |
4426 ZapTransitions(); | 4437 ZapTransitions(); |
4427 } | 4438 } |
4428 | 4439 |
4429 WRITE_FIELD(this, kTransitionsOrBackPointerOffset, transition_array); | 4440 WRITE_FIELD(this, kTransitionsOrBackPointerOffset, transition_array); |
4430 CONDITIONAL_WRITE_BARRIER( | 4441 CONDITIONAL_WRITE_BARRIER( |
4431 GetHeap(), this, kTransitionsOrBackPointerOffset, transition_array, mode); | 4442 GetHeap(), this, kTransitionsOrBackPointerOffset, transition_array, mode); |
4432 } | 4443 } |
4433 | 4444 |
4434 | 4445 |
(...skipping 1965 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
6400 #undef WRITE_UINT32_FIELD | 6411 #undef WRITE_UINT32_FIELD |
6401 #undef READ_SHORT_FIELD | 6412 #undef READ_SHORT_FIELD |
6402 #undef WRITE_SHORT_FIELD | 6413 #undef WRITE_SHORT_FIELD |
6403 #undef READ_BYTE_FIELD | 6414 #undef READ_BYTE_FIELD |
6404 #undef WRITE_BYTE_FIELD | 6415 #undef WRITE_BYTE_FIELD |
6405 | 6416 |
6406 | 6417 |
6407 } } // namespace v8::internal | 6418 } } // namespace v8::internal |
6408 | 6419 |
6409 #endif // V8_OBJECTS_INL_H_ | 6420 #endif // V8_OBJECTS_INL_H_ |
OLD | NEW |