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1 /* | 1 /* |
2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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56 // scoped_refptr<MyFoo> b; | 56 // scoped_refptr<MyFoo> b; |
57 // | 57 // |
58 // b = a; | 58 // b = a; |
59 // // now, |a| and |b| each own a reference to the same MyFoo object. | 59 // // now, |a| and |b| each own a reference to the same MyFoo object. |
60 // } | 60 // } |
61 // | 61 // |
62 | 62 |
63 #ifndef WEBRTC_BASE_SCOPED_REF_PTR_H_ | 63 #ifndef WEBRTC_BASE_SCOPED_REF_PTR_H_ |
64 #define WEBRTC_BASE_SCOPED_REF_PTR_H_ | 64 #define WEBRTC_BASE_SCOPED_REF_PTR_H_ |
65 | 65 |
66 #include <memory> | |
67 | 66 |
68 namespace rtc { | 67 // This header is deprecated and is just left here temporarily during |
69 | 68 // refactoring. See https://bugs.webrtc.org/7634 for more details. |
70 template <class T> | 69 #include "webrtc/rtc_base/scoped_ref_ptr.h" |
71 class scoped_refptr { | |
72 public: | |
73 scoped_refptr() : ptr_(nullptr) {} | |
74 | |
75 scoped_refptr(T* p) : ptr_(p) { | |
76 if (ptr_) | |
77 ptr_->AddRef(); | |
78 } | |
79 | |
80 scoped_refptr(const scoped_refptr<T>& r) : ptr_(r.ptr_) { | |
81 if (ptr_) | |
82 ptr_->AddRef(); | |
83 } | |
84 | |
85 template <typename U> | |
86 scoped_refptr(const scoped_refptr<U>& r) : ptr_(r.get()) { | |
87 if (ptr_) | |
88 ptr_->AddRef(); | |
89 } | |
90 | |
91 // Move constructors. | |
92 scoped_refptr(scoped_refptr<T>&& r) : ptr_(r.release()) {} | |
93 | |
94 template <typename U> | |
95 scoped_refptr(scoped_refptr<U>&& r) : ptr_(r.release()) {} | |
96 | |
97 ~scoped_refptr() { | |
98 if (ptr_) | |
99 ptr_->Release(); | |
100 } | |
101 | |
102 T* get() const { return ptr_; } | |
103 operator T*() const { return ptr_; } | |
104 T* operator->() const { return ptr_; } | |
105 | |
106 // Release a pointer. | |
107 // The return value is the current pointer held by this object. | |
108 // If this object holds a null pointer, the return value is null. | |
109 // After this operation, this object will hold a null pointer, | |
110 // and will not own the object any more. | |
111 T* release() { | |
112 T* retVal = ptr_; | |
113 ptr_ = nullptr; | |
114 return retVal; | |
115 } | |
116 | |
117 scoped_refptr<T>& operator=(T* p) { | |
118 // AddRef first so that self assignment should work | |
119 if (p) | |
120 p->AddRef(); | |
121 if (ptr_ ) | |
122 ptr_ ->Release(); | |
123 ptr_ = p; | |
124 return *this; | |
125 } | |
126 | |
127 scoped_refptr<T>& operator=(const scoped_refptr<T>& r) { | |
128 return *this = r.ptr_; | |
129 } | |
130 | |
131 template <typename U> | |
132 scoped_refptr<T>& operator=(const scoped_refptr<U>& r) { | |
133 return *this = r.get(); | |
134 } | |
135 | |
136 scoped_refptr<T>& operator=(scoped_refptr<T>&& r) { | |
137 scoped_refptr<T>(std::move(r)).swap(*this); | |
138 return *this; | |
139 } | |
140 | |
141 template <typename U> | |
142 scoped_refptr<T>& operator=(scoped_refptr<U>&& r) { | |
143 scoped_refptr<T>(std::move(r)).swap(*this); | |
144 return *this; | |
145 } | |
146 | |
147 void swap(T** pp) { | |
148 T* p = ptr_; | |
149 ptr_ = *pp; | |
150 *pp = p; | |
151 } | |
152 | |
153 void swap(scoped_refptr<T>& r) { | |
154 swap(&r.ptr_); | |
155 } | |
156 | |
157 protected: | |
158 T* ptr_; | |
159 }; | |
160 | |
161 } // namespace rtc | |
162 | 70 |
163 #endif // WEBRTC_BASE_SCOPED_REF_PTR_H_ | 71 #endif // WEBRTC_BASE_SCOPED_REF_PTR_H_ |
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