OLD | NEW |
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 |
(...skipping 187 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
198 // The strongification of collections relies on the fact that once a | 198 // The strongification of collections relies on the fact that once a |
199 // collection has been strongified, there is no way that it can contain | 199 // collection has been strongified, there is no way that it can contain |
200 // non-live entries, so no entries will be removed. Since you can't set | 200 // non-live entries, so no entries will be removed. Since you can't set |
201 // the mark bit on a null pointer, that means that null pointers are | 201 // the mark bit on a null pointer, that means that null pointers are |
202 // always 'alive'. | 202 // always 'alive'. |
203 if (!object) | 203 if (!object) |
204 return true; | 204 return true; |
205 // TODO(keishi): some tests create CrossThreadPersistent on non attached
threads. | 205 // TODO(keishi): some tests create CrossThreadPersistent on non attached
threads. |
206 if (!ThreadState::current()) | 206 if (!ThreadState::current()) |
207 return true; | 207 return true; |
208 if (&ThreadState::current()->heap() != &pageFromObject(object)->arena()-
>getThreadState()->heap()) | 208 DCHECK(&ThreadState::current()->heap() == &pageFromObject(object)->arena
()->getThreadState()->heap()); |
209 return true; | |
210 return ObjectAliveTrait<T>::isHeapObjectAlive(object); | 209 return ObjectAliveTrait<T>::isHeapObjectAlive(object); |
211 } | 210 } |
212 template<typename T> | 211 template<typename T> |
213 static inline bool isHeapObjectAlive(const Member<T>& member) | 212 static inline bool isHeapObjectAlive(const Member<T>& member) |
214 { | 213 { |
215 return isHeapObjectAlive(member.get()); | 214 return isHeapObjectAlive(member.get()); |
216 } | 215 } |
217 template<typename T> | 216 template<typename T> |
218 static inline bool isHeapObjectAlive(const WeakMember<T>& member) | 217 static inline bool isHeapObjectAlive(const WeakMember<T>& member) |
219 { | 218 { |
(...skipping 401 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
621 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object) | 620 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object) |
622 { | 621 { |
623 T** cell = reinterpret_cast<T**>(object); | 622 T** cell = reinterpret_cast<T**>(object); |
624 if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell)) | 623 if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell)) |
625 *cell = nullptr; | 624 *cell = nullptr; |
626 } | 625 } |
627 | 626 |
628 } // namespace blink | 627 } // namespace blink |
629 | 628 |
630 #endif // Heap_h | 629 #endif // Heap_h |
OLD | NEW |