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| 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 |
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| 382 */ | 382 */ |
| 383 inline void Dispose(); | 383 inline void Dispose(); |
| 384 | 384 |
| 385 /** | 385 /** |
| 386 * Make the reference to this object weak. When only weak handles | 386 * Make the reference to this object weak. When only weak handles |
| 387 * refer to the object, the garbage collector will perform a | 387 * refer to the object, the garbage collector will perform a |
| 388 * callback to the given V8::WeakReferenceCallback function, passing | 388 * callback to the given V8::WeakReferenceCallback function, passing |
| 389 * it the object reference and the given parameters. | 389 * it the object reference and the given parameters. |
| 390 */ | 390 */ |
| 391 inline void MakeWeak(void* parameters, WeakReferenceCallback callback); | 391 inline void MakeWeak(void* parameters, WeakReferenceCallback callback); |
| 392 inline void MakeWeak(Isolate* isolate, void* parameters, |
| 393 WeakReferenceCallback callback); |
| 392 | 394 |
| 393 /** Clears the weak reference to this object. */ | 395 /** Clears the weak reference to this object. */ |
| 394 inline void ClearWeak(); | 396 inline void ClearWeak(); |
| 395 | 397 |
| 396 /** | 398 /** |
| 397 * Marks the reference to this object independent. Garbage collector | 399 * Marks the reference to this object independent. Garbage collector |
| 398 * is free to ignore any object groups containing this object. | 400 * is free to ignore any object groups containing this object. |
| 399 * Weak callback for an independent handle should not | 401 * Weak callback for an independent handle should not |
| 400 * assume that it will be preceded by a global GC prologue callback | 402 * assume that it will be preceded by a global GC prologue callback |
| 401 * or followed by a global GC epilogue callback. | 403 * or followed by a global GC epilogue callback. |
| 402 */ | 404 */ |
| 403 inline void MarkIndependent(); | 405 inline void MarkIndependent(); |
| 404 | 406 |
| 405 /** Returns true if this handle was previously marked as independent. */ | 407 /** Returns true if this handle was previously marked as independent. */ |
| 406 inline bool IsIndependent() const; | 408 inline bool IsIndependent() const; |
| 407 | 409 |
| 408 /** Checks if the handle holds the only reference to an object. */ | 410 /** Checks if the handle holds the only reference to an object. */ |
| 409 inline bool IsNearDeath() const; | 411 inline bool IsNearDeath() const; |
| 410 | 412 |
| 411 /** Returns true if the handle's reference is weak. */ | 413 /** Returns true if the handle's reference is weak. */ |
| 412 inline bool IsWeak() const; | 414 inline bool IsWeak() const; |
| 415 inline bool IsWeak(Isolate* isolate) const; |
| 413 | 416 |
| 414 /** | 417 /** |
| 415 * Assigns a wrapper class ID to the handle. See RetainedObjectInfo | 418 * Assigns a wrapper class ID to the handle. See RetainedObjectInfo |
| 416 * interface description in v8-profiler.h for details. | 419 * interface description in v8-profiler.h for details. |
| 417 */ | 420 */ |
| 418 inline void SetWrapperClassId(uint16_t class_id); | 421 inline void SetWrapperClassId(uint16_t class_id); |
| 419 | 422 |
| 420 /** | 423 /** |
| 421 * Returns the class ID previously assigned to this handle or 0 if no class | 424 * Returns the class ID previously assigned to this handle or 0 if no class |
| 422 * ID was previously assigned. | 425 * ID was previously assigned. |
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| 3253 * object in the group is alive, all objects in the group are alive. | 3256 * object in the group is alive, all objects in the group are alive. |
| 3254 * After each garbage collection, object groups are removed. It is | 3257 * After each garbage collection, object groups are removed. It is |
| 3255 * intended to be used in the before-garbage-collection callback | 3258 * intended to be used in the before-garbage-collection callback |
| 3256 * function, for instance to simulate DOM tree connections among JS | 3259 * function, for instance to simulate DOM tree connections among JS |
| 3257 * wrapper objects. | 3260 * wrapper objects. |
| 3258 * See v8-profiler.h for RetainedObjectInfo interface description. | 3261 * See v8-profiler.h for RetainedObjectInfo interface description. |
| 3259 */ | 3262 */ |
| 3260 static void AddObjectGroup(Persistent<Value>* objects, | 3263 static void AddObjectGroup(Persistent<Value>* objects, |
| 3261 size_t length, | 3264 size_t length, |
| 3262 RetainedObjectInfo* info = NULL); | 3265 RetainedObjectInfo* info = NULL); |
| 3266 static void AddObjectGroup(Isolate* isolate, |
| 3267 Persistent<Value>* objects, |
| 3268 size_t length, |
| 3269 RetainedObjectInfo* info = NULL); |
| 3263 | 3270 |
| 3264 /** | 3271 /** |
| 3265 * Allows the host application to declare implicit references between | 3272 * Allows the host application to declare implicit references between |
| 3266 * the objects: if |parent| is alive, all |children| are alive too. | 3273 * the objects: if |parent| is alive, all |children| are alive too. |
| 3267 * After each garbage collection, all implicit references | 3274 * After each garbage collection, all implicit references |
| 3268 * are removed. It is intended to be used in the before-garbage-collection | 3275 * are removed. It is intended to be used in the before-garbage-collection |
| 3269 * callback function. | 3276 * callback function. |
| 3270 */ | 3277 */ |
| 3271 static void AddImplicitReferences(Persistent<Object> parent, | 3278 static void AddImplicitReferences(Persistent<Object> parent, |
| 3272 Persistent<Value>* children, | 3279 Persistent<Value>* children, |
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| 3484 static int ContextDisposedNotification(); | 3491 static int ContextDisposedNotification(); |
| 3485 | 3492 |
| 3486 private: | 3493 private: |
| 3487 V8(); | 3494 V8(); |
| 3488 | 3495 |
| 3489 static internal::Object** GlobalizeReference(internal::Object** handle); | 3496 static internal::Object** GlobalizeReference(internal::Object** handle); |
| 3490 static void DisposeGlobal(internal::Object** global_handle); | 3497 static void DisposeGlobal(internal::Object** global_handle); |
| 3491 static void MakeWeak(internal::Object** global_handle, | 3498 static void MakeWeak(internal::Object** global_handle, |
| 3492 void* data, | 3499 void* data, |
| 3493 WeakReferenceCallback); | 3500 WeakReferenceCallback); |
| 3501 static void MakeWeak(internal::Isolate* isolate, |
| 3502 internal::Object** global_handle, |
| 3503 void* data, |
| 3504 WeakReferenceCallback); |
| 3494 static void ClearWeak(internal::Object** global_handle); | 3505 static void ClearWeak(internal::Object** global_handle); |
| 3495 static void MarkIndependent(internal::Object** global_handle); | 3506 static void MarkIndependent(internal::Object** global_handle); |
| 3496 static bool IsGlobalIndependent(internal::Object** global_handle); | 3507 static bool IsGlobalIndependent(internal::Object** global_handle); |
| 3497 static bool IsGlobalNearDeath(internal::Object** global_handle); | 3508 static bool IsGlobalNearDeath(internal::Object** global_handle); |
| 3498 static bool IsGlobalWeak(internal::Object** global_handle); | 3509 static bool IsGlobalWeak(internal::Object** global_handle); |
| 3510 static bool IsGlobalWeak(internal::Isolate* isolate, |
| 3511 internal::Object** global_handle); |
| 3499 static void SetWrapperClassId(internal::Object** global_handle, | 3512 static void SetWrapperClassId(internal::Object** global_handle, |
| 3500 uint16_t class_id); | 3513 uint16_t class_id); |
| 3501 static uint16_t GetWrapperClassId(internal::Object** global_handle); | 3514 static uint16_t GetWrapperClassId(internal::Object** global_handle); |
| 3502 | 3515 |
| 3503 template <class T> friend class Handle; | 3516 template <class T> friend class Handle; |
| 3504 template <class T> friend class Local; | 3517 template <class T> friend class Local; |
| 3505 template <class T> friend class Persistent; | 3518 template <class T> friend class Persistent; |
| 3506 friend class Context; | 3519 friend class Context; |
| 3507 }; | 3520 }; |
| 3508 | 3521 |
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| 4230 | 4243 |
| 4231 | 4244 |
| 4232 template <class T> | 4245 template <class T> |
| 4233 bool Persistent<T>::IsWeak() const { | 4246 bool Persistent<T>::IsWeak() const { |
| 4234 if (this->IsEmpty()) return false; | 4247 if (this->IsEmpty()) return false; |
| 4235 return V8::IsGlobalWeak(reinterpret_cast<internal::Object**>(**this)); | 4248 return V8::IsGlobalWeak(reinterpret_cast<internal::Object**>(**this)); |
| 4236 } | 4249 } |
| 4237 | 4250 |
| 4238 | 4251 |
| 4239 template <class T> | 4252 template <class T> |
| 4253 bool Persistent<T>::IsWeak(Isolate* isolate) const { |
| 4254 if (this->IsEmpty()) return false; |
| 4255 return V8::IsGlobalWeak(reinterpret_cast<internal::Isolate*>(isolate), |
| 4256 reinterpret_cast<internal::Object**>(**this)); |
| 4257 } |
| 4258 |
| 4259 |
| 4260 template <class T> |
| 4240 void Persistent<T>::Dispose() { | 4261 void Persistent<T>::Dispose() { |
| 4241 if (this->IsEmpty()) return; | 4262 if (this->IsEmpty()) return; |
| 4242 V8::DisposeGlobal(reinterpret_cast<internal::Object**>(**this)); | 4263 V8::DisposeGlobal(reinterpret_cast<internal::Object**>(**this)); |
| 4243 } | 4264 } |
| 4244 | 4265 |
| 4245 | 4266 |
| 4246 template <class T> | 4267 template <class T> |
| 4247 Persistent<T>::Persistent() : Handle<T>() { } | 4268 Persistent<T>::Persistent() : Handle<T>() { } |
| 4248 | 4269 |
| 4249 template <class T> | 4270 template <class T> |
| 4250 void Persistent<T>::MakeWeak(void* parameters, WeakReferenceCallback callback) { | 4271 void Persistent<T>::MakeWeak(void* parameters, WeakReferenceCallback callback) { |
| 4251 V8::MakeWeak(reinterpret_cast<internal::Object**>(**this), | 4272 V8::MakeWeak(reinterpret_cast<internal::Object**>(**this), |
| 4252 parameters, | 4273 parameters, |
| 4253 callback); | 4274 callback); |
| 4254 } | 4275 } |
| 4255 | 4276 |
| 4256 template <class T> | 4277 template <class T> |
| 4278 void Persistent<T>::MakeWeak(Isolate* isolate, void* parameters, |
| 4279 WeakReferenceCallback callback) { |
| 4280 V8::MakeWeak(reinterpret_cast<internal::Isolate*>(isolate), |
| 4281 reinterpret_cast<internal::Object**>(**this), |
| 4282 parameters, |
| 4283 callback); |
| 4284 } |
| 4285 |
| 4286 template <class T> |
| 4257 void Persistent<T>::ClearWeak() { | 4287 void Persistent<T>::ClearWeak() { |
| 4258 V8::ClearWeak(reinterpret_cast<internal::Object**>(**this)); | 4288 V8::ClearWeak(reinterpret_cast<internal::Object**>(**this)); |
| 4259 } | 4289 } |
| 4260 | 4290 |
| 4261 template <class T> | 4291 template <class T> |
| 4262 void Persistent<T>::MarkIndependent() { | 4292 void Persistent<T>::MarkIndependent() { |
| 4263 V8::MarkIndependent(reinterpret_cast<internal::Object**>(**this)); | 4293 V8::MarkIndependent(reinterpret_cast<internal::Object**>(**this)); |
| 4264 } | 4294 } |
| 4265 | 4295 |
| 4266 template <class T> | 4296 template <class T> |
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| 4696 | 4726 |
| 4697 | 4727 |
| 4698 } // namespace v8 | 4728 } // namespace v8 |
| 4699 | 4729 |
| 4700 | 4730 |
| 4701 #undef V8EXPORT | 4731 #undef V8EXPORT |
| 4702 #undef TYPE_CHECK | 4732 #undef TYPE_CHECK |
| 4703 | 4733 |
| 4704 | 4734 |
| 4705 #endif // V8_H_ | 4735 #endif // V8_H_ |
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