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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 119 void Destroy(Object** location); | 119 void Destroy(Object** location); |
| 120 | 120 |
| 121 // Make the global handle weak and set the callback parameter for the | 121 // Make the global handle weak and set the callback parameter for the |
| 122 // handle. When the garbage collector recognizes that only weak global | 122 // handle. When the garbage collector recognizes that only weak global |
| 123 // handles point to an object the handles are cleared and the callback | 123 // handles point to an object the handles are cleared and the callback |
| 124 // function is invoked (for each handle) with the handle and corresponding | 124 // function is invoked (for each handle) with the handle and corresponding |
| 125 // parameter as arguments. Note: cleared means set to Smi::FromInt(0). The | 125 // parameter as arguments. Note: cleared means set to Smi::FromInt(0). The |
| 126 // reason is that Smi::FromInt(0) does not change during garage collection. | 126 // reason is that Smi::FromInt(0) does not change during garage collection. |
| 127 void MakeWeak(Object** location, | 127 void MakeWeak(Object** location, |
| 128 void* parameter, | 128 void* parameter, |
| 129 WeakReferenceCallback callback); | 129 WeakReferenceCallback weak_reference_callback, |
| 130 NearDeathCallback near_death_callback); |
| 130 | 131 |
| 131 void RecordStats(HeapStats* stats); | 132 void RecordStats(HeapStats* stats); |
| 132 | 133 |
| 133 // Returns the current number of weak handles. | 134 // Returns the current number of weak handles. |
| 134 int NumberOfWeakHandles(); | 135 int NumberOfWeakHandles(); |
| 135 | 136 |
| 136 // Returns the current number of weak handles to global objects. | 137 // Returns the current number of weak handles to global objects. |
| 137 // These handles are also included in NumberOfWeakHandles(). | 138 // These handles are also included in NumberOfWeakHandles(). |
| 138 int NumberOfGlobalObjectWeakHandles(); | 139 int NumberOfGlobalObjectWeakHandles(); |
| 139 | 140 |
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| 274 | 275 |
| 275 friend class Isolate; | 276 friend class Isolate; |
| 276 | 277 |
| 277 DISALLOW_COPY_AND_ASSIGN(GlobalHandles); | 278 DISALLOW_COPY_AND_ASSIGN(GlobalHandles); |
| 278 }; | 279 }; |
| 279 | 280 |
| 280 | 281 |
| 281 } } // namespace v8::internal | 282 } } // namespace v8::internal |
| 282 | 283 |
| 283 #endif // V8_GLOBAL_HANDLES_H_ | 284 #endif // V8_GLOBAL_HANDLES_H_ |
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