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 DCHECK(&ThreadState::current()->heap() == &pageFromObject(object)->arena
()->getThreadState()->heap()); | 208 if (&ThreadState::current()->heap() != &pageFromObject(object)->arena()-
>getThreadState()->heap()) |
| 209 return true; |
209 return ObjectAliveTrait<T>::isHeapObjectAlive(object); | 210 return ObjectAliveTrait<T>::isHeapObjectAlive(object); |
210 } | 211 } |
211 template<typename T> | 212 template<typename T> |
212 static inline bool isHeapObjectAlive(const Member<T>& member) | 213 static inline bool isHeapObjectAlive(const Member<T>& member) |
213 { | 214 { |
214 return isHeapObjectAlive(member.get()); | 215 return isHeapObjectAlive(member.get()); |
215 } | 216 } |
216 template<typename T> | 217 template<typename T> |
217 static inline bool isHeapObjectAlive(const WeakMember<T>& member) | 218 static inline bool isHeapObjectAlive(const WeakMember<T>& member) |
218 { | 219 { |
(...skipping 401 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
620 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object) | 621 void VisitorHelper<Derived>::handleWeakCell(Visitor* self, void* object) |
621 { | 622 { |
622 T** cell = reinterpret_cast<T**>(object); | 623 T** cell = reinterpret_cast<T**>(object); |
623 if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell)) | 624 if (*cell && !ObjectAliveTrait<T>::isHeapObjectAlive(*cell)) |
624 *cell = nullptr; | 625 *cell = nullptr; |
625 } | 626 } |
626 | 627 |
627 } // namespace blink | 628 } // namespace blink |
628 | 629 |
629 #endif // Heap_h | 630 #endif // Heap_h |
OLD | NEW |