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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_BASE_SMART_POINTERS_H_ | 5 #ifndef V8_BASE_SMART_POINTERS_H_ |
6 #define V8_BASE_SMART_POINTERS_H_ | 6 #define V8_BASE_SMART_POINTERS_H_ |
7 | 7 |
8 #include "src/base/logging.h" | 8 #include "src/base/logging.h" |
9 | 9 |
10 namespace v8 { | 10 namespace v8 { |
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76 // is deleted using DeleteArray. This implies that you must allocate with | 76 // is deleted using DeleteArray. This implies that you must allocate with |
77 // NewArray. | 77 // NewArray. |
78 ~SmartPointerBase() { | 78 ~SmartPointerBase() { |
79 if (p_) Deallocator::Delete(p_); | 79 if (p_) Deallocator::Delete(p_); |
80 } | 80 } |
81 | 81 |
82 private: | 82 private: |
83 T* p_; | 83 T* p_; |
84 }; | 84 }; |
85 | 85 |
86 // A 'scoped array pointer' that calls DeleteArray on its pointer when the | |
87 // destructor is called. | |
88 | |
89 template <typename T> | |
90 struct ArrayDeallocator { | |
91 static void Delete(T* array) { delete[] array; } | |
92 }; | |
93 | |
94 | |
95 template <typename T> | |
96 class SmartArrayPointer : public SmartPointerBase<ArrayDeallocator<T>, T> { | |
97 public: | |
98 SmartArrayPointer() {} | |
99 explicit SmartArrayPointer(T* ptr) | |
100 : SmartPointerBase<ArrayDeallocator<T>, T>(ptr) {} | |
101 SmartArrayPointer(const SmartArrayPointer<T>& rhs) | |
102 : SmartPointerBase<ArrayDeallocator<T>, T>(rhs) {} | |
103 }; | |
104 | |
105 | |
106 template <typename T> | 86 template <typename T> |
107 struct ObjectDeallocator { | 87 struct ObjectDeallocator { |
108 static void Delete(T* object) { delete object; } | 88 static void Delete(T* object) { delete object; } |
109 }; | 89 }; |
110 | 90 |
111 template <typename T> | 91 template <typename T> |
112 class SmartPointer : public SmartPointerBase<ObjectDeallocator<T>, T> { | 92 class SmartPointer : public SmartPointerBase<ObjectDeallocator<T>, T> { |
113 public: | 93 public: |
114 SmartPointer() {} | 94 SmartPointer() {} |
115 explicit SmartPointer(T* ptr) | 95 explicit SmartPointer(T* ptr) |
116 : SmartPointerBase<ObjectDeallocator<T>, T>(ptr) {} | 96 : SmartPointerBase<ObjectDeallocator<T>, T>(ptr) {} |
117 SmartPointer(const SmartPointer<T>& rhs) | 97 SmartPointer(const SmartPointer<T>& rhs) |
118 : SmartPointerBase<ObjectDeallocator<T>, T>(rhs) {} | 98 : SmartPointerBase<ObjectDeallocator<T>, T>(rhs) {} |
119 }; | 99 }; |
120 | 100 |
121 } // namespace base | 101 } // namespace base |
122 } // namespace v8 | 102 } // namespace v8 |
123 | 103 |
124 #endif // V8_SMART_POINTERS_H_ | 104 #endif // V8_SMART_POINTERS_H_ |
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