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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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| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ | 29 */ |
| 30 | 30 |
| 31 #ifndef Visitor_h | 31 #ifndef Visitor_h |
| 32 #define Visitor_h | 32 #define Visitor_h |
| 33 | 33 |
| 34 #include <memory> |
| 34 #include "platform/PlatformExport.h" | 35 #include "platform/PlatformExport.h" |
| 35 #include "platform/heap/GarbageCollected.h" | 36 #include "platform/heap/GarbageCollected.h" |
| 36 #include "wtf/Allocator.h" | 37 #include "wtf/Allocator.h" |
| 37 #include "wtf/Assertions.h" | 38 #include "wtf/Assertions.h" |
| 38 #include "wtf/Forward.h" | 39 #include "wtf/Forward.h" |
| 39 #include "wtf/HashTraits.h" | 40 #include "wtf/HashTraits.h" |
| 40 #include "wtf/TypeTraits.h" | 41 #include "wtf/TypeTraits.h" |
| 41 #include <memory> | |
| 42 | 42 |
| 43 namespace blink { | 43 namespace blink { |
| 44 | 44 |
| 45 template <typename T> | 45 template <typename T> |
| 46 class GarbageCollected; | 46 class GarbageCollected; |
| 47 class HeapObjectHeader; | 47 class HeapObjectHeader; |
| 48 template <typename T> | 48 template <typename T> |
| 49 class TraceTrait; | 49 class TraceTrait; |
| 50 class ThreadState; | 50 class ThreadState; |
| 51 class Visitor; | 51 class Visitor; |
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| 225 const_cast<typename std::remove_const<T>::type**>(cell)), | 225 const_cast<typename std::remove_const<T>::type**>(cell)), |
| 226 &handleWeakCell<T>); | 226 &handleWeakCell<T>); |
| 227 } | 227 } |
| 228 | 228 |
| 229 template <typename T, void (T::*method)(Visitor*)> | 229 template <typename T, void (T::*method)(Visitor*)> |
| 230 void registerWeakMembers(const T* obj) { | 230 void registerWeakMembers(const T* obj) { |
| 231 registerWeakCallback(const_cast<T*>(obj), | 231 registerWeakCallback(const_cast<T*>(obj), |
| 232 &TraceMethodDelegate<T, method>::trampoline); | 232 &TraceMethodDelegate<T, method>::trampoline); |
| 233 } | 233 } |
| 234 | 234 |
| 235 | |
| 236 inline void registerBackingStoreReference(void* slot); | 235 inline void registerBackingStoreReference(void* slot); |
| 237 | 236 |
| 238 inline void registerBackingStoreCallback(void* backingStore, | 237 inline void registerBackingStoreCallback(void* backingStore, |
| 239 MovingObjectCallback, | 238 MovingObjectCallback, |
| 240 void* callbackData); | 239 void* callbackData); |
| 241 | 240 |
| 242 // This method marks an object and adds it to the set of objects | 241 // This method marks an object and adds it to the set of objects |
| 243 // that should have their trace method called. Since not all | 242 // that should have their trace method called. Since not all |
| 244 // objects have vtables we have to have the callback as an | 243 // objects have vtables we have to have the callback as an |
| 245 // explicit argument, but we can use the templated one-argument | 244 // explicit argument, but we can use the templated one-argument |
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| 304 | 303 |
| 305 static void markNoTracingCallback(Visitor*, void*); | 304 static void markNoTracingCallback(Visitor*, void*); |
| 306 | 305 |
| 307 ThreadState* const m_state; | 306 ThreadState* const m_state; |
| 308 const MarkingMode m_markingMode; | 307 const MarkingMode m_markingMode; |
| 309 }; | 308 }; |
| 310 | 309 |
| 311 } // namespace blink | 310 } // namespace blink |
| 312 | 311 |
| 313 #endif // Visitor_h | 312 #endif // Visitor_h |
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