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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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820 | 820 |
821 // Is the finalizable GC object still alive, but slated for lazy sweeping? | 821 // Is the finalizable GC object still alive, but slated for lazy sweeping? |
822 // If a lazy sweep is in progress, returns true if the object was found | 822 // If a lazy sweep is in progress, returns true if the object was found |
823 // to be not reachable during the marking phase, but it has yet to be swept | 823 // to be not reachable during the marking phase, but it has yet to be swept |
824 // and finalized. The predicate returns false in all other cases. | 824 // and finalized. The predicate returns false in all other cases. |
825 // | 825 // |
826 // Holding a reference to an already-dead object is not a valid state | 826 // Holding a reference to an already-dead object is not a valid state |
827 // to be in; willObjectBeLazilySwept() has undefined behavior if passed | 827 // to be in; willObjectBeLazilySwept() has undefined behavior if passed |
828 // such a reference. | 828 // such a reference. |
829 template<typename T> | 829 template<typename T> |
| 830 NO_LAZY_SWEEP_SANITIZE_ADDRESS |
830 static bool willObjectBeLazilySwept(const T* objectPointer) | 831 static bool willObjectBeLazilySwept(const T* objectPointer) |
831 { | 832 { |
832 static_assert(IsGarbageCollectedType<T>::value, "only objects deriving f
rom GarbageCollected can be used."); | 833 static_assert(IsGarbageCollectedType<T>::value, "only objects deriving f
rom GarbageCollected can be used."); |
833 #if ENABLE(OILPAN) | 834 #if ENABLE(OILPAN) |
834 BasePage* page = pageFromObject(objectPointer); | 835 BasePage* page = pageFromObject(objectPointer); |
835 if (page->hasBeenSwept()) | 836 if (page->hasBeenSwept()) |
836 return false; | 837 return false; |
837 ASSERT(page->heap()->threadState()->isSweepingInProgress()); | 838 ASSERT(page->heap()->threadState()->isSweepingInProgress()); |
838 | 839 |
839 return !ObjectAliveTrait<T>::isHeapObjectAlive(s_markingVisitor, const_c
ast<T*>(objectPointer)); | 840 return !ObjectAliveTrait<T>::isHeapObjectAlive(s_markingVisitor, const_c
ast<T*>(objectPointer)); |
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1266 size_t copySize = previousHeader->payloadSize(); | 1267 size_t copySize = previousHeader->payloadSize(); |
1267 if (copySize > size) | 1268 if (copySize > size) |
1268 copySize = size; | 1269 copySize = size; |
1269 memcpy(address, previous, copySize); | 1270 memcpy(address, previous, copySize); |
1270 return address; | 1271 return address; |
1271 } | 1272 } |
1272 | 1273 |
1273 } // namespace blink | 1274 } // namespace blink |
1274 | 1275 |
1275 #endif // Heap_h | 1276 #endif // Heap_h |
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