OLD | NEW |
1 /* | 1 /* |
2 * Copyright 2016 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2016 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 #ifndef WEBRTC_BASE_REFCOUNTEDOBJECT_H_ | 10 #ifndef WEBRTC_BASE_REFCOUNTEDOBJECT_H_ |
11 #define WEBRTC_BASE_REFCOUNTEDOBJECT_H_ | 11 #define WEBRTC_BASE_REFCOUNTEDOBJECT_H_ |
12 | 12 |
13 #include <utility> | |
14 | 13 |
15 #include "webrtc/base/atomicops.h" | 14 // This header is deprecated and is just left here temporarily during |
16 | 15 // refactoring. See https://bugs.webrtc.org/7634 for more details. |
17 namespace rtc { | 16 #include "webrtc/rtc_base/refcountedobject.h" |
18 | |
19 template <class T> | |
20 class RefCountedObject : public T { | |
21 public: | |
22 RefCountedObject() {} | |
23 | |
24 template <class P0> | |
25 explicit RefCountedObject(P0&& p0) : T(std::forward<P0>(p0)) {} | |
26 | |
27 template <class P0, class P1, class... Args> | |
28 RefCountedObject(P0&& p0, P1&& p1, Args&&... args) | |
29 : T(std::forward<P0>(p0), | |
30 std::forward<P1>(p1), | |
31 std::forward<Args>(args)...) {} | |
32 | |
33 virtual int AddRef() const { return AtomicOps::Increment(&ref_count_); } | |
34 | |
35 virtual int Release() const { | |
36 int count = AtomicOps::Decrement(&ref_count_); | |
37 if (!count) { | |
38 delete this; | |
39 } | |
40 return count; | |
41 } | |
42 | |
43 // Return whether the reference count is one. If the reference count is used | |
44 // in the conventional way, a reference count of 1 implies that the current | |
45 // thread owns the reference and no other thread shares it. This call | |
46 // performs the test for a reference count of one, and performs the memory | |
47 // barrier needed for the owning thread to act on the object, knowing that it | |
48 // has exclusive access to the object. | |
49 virtual bool HasOneRef() const { | |
50 return AtomicOps::AcquireLoad(&ref_count_) == 1; | |
51 } | |
52 | |
53 protected: | |
54 virtual ~RefCountedObject() {} | |
55 | |
56 mutable volatile int ref_count_ = 0; | |
57 }; | |
58 | |
59 } // namespace rtc | |
60 | 17 |
61 #endif // WEBRTC_BASE_REFCOUNTEDOBJECT_H_ | 18 #endif // WEBRTC_BASE_REFCOUNTEDOBJECT_H_ |
OLD | NEW |