1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_RUNTIME_HANDLE_WRAPPER_H_ 18 #define ART_RUNTIME_HANDLE_WRAPPER_H_ 19 20 #include "handle.h" 21 #include "obj_ptr.h" 22 23 namespace art { 24 25 // A wrapper which wraps around Object** and restores the pointer in the destructor. 26 // TODO: Delete 27 template<class T> 28 class HandleWrapper : public MutableHandle<T> { 29 public: 30 HandleWrapper(T** obj, const MutableHandle<T>& handle) 31 : MutableHandle<T>(handle), obj_(obj) { 32 } 33 34 HandleWrapper(const HandleWrapper&) = default; 35 36 ~HandleWrapper() { 37 *obj_ = MutableHandle<T>::Get(); 38 } 39 40 private: 41 T** const obj_; 42 }; 43 44 45 // A wrapper which wraps around ObjPtr<Object>* and restores the pointer in the destructor. 46 // TODO: Add more functionality. 47 template<class T> 48 class HandleWrapperObjPtr : public MutableHandle<T> { 49 public: 50 HandleWrapperObjPtr(ObjPtr<T>* obj, const MutableHandle<T>& handle) 51 : MutableHandle<T>(handle), obj_(obj) {} 52 53 HandleWrapperObjPtr(const HandleWrapperObjPtr&) = default; 54 55 ~HandleWrapperObjPtr() { 56 *obj_ = MutableHandle<T>::Get(); 57 } 58 59 private: 60 ObjPtr<T>* const obj_; 61 }; 62 63 } // namespace art 64 65 #endif // ART_RUNTIME_HANDLE_WRAPPER_H_ 66
