1 /* 2 * Copyright 2011 The WebRTC Project Authors. All rights reserved. 3 * 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 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef TALK_APP_BASE_REFCOUNT_H_ 12 #define TALK_APP_BASE_REFCOUNT_H_ 13 14 #include <string.h> 15 16 #include "webrtc/base/criticalsection.h" 17 18 namespace rtc { 19 20 // Reference count interface. 21 class RefCountInterface { 22 public: 23 virtual int AddRef() = 0; 24 virtual int Release() = 0; 25 protected: ~RefCountInterface()26 virtual ~RefCountInterface() {} 27 }; 28 29 template <class T> 30 class RefCountedObject : public T { 31 public: RefCountedObject()32 RefCountedObject() : ref_count_(0) { 33 } 34 35 template<typename P> RefCountedObject(P p)36 explicit RefCountedObject(P p) : T(p), ref_count_(0) { 37 } 38 39 template<typename P1, typename P2> RefCountedObject(P1 p1,P2 p2)40 RefCountedObject(P1 p1, P2 p2) : T(p1, p2), ref_count_(0) { 41 } 42 43 template<typename P1, typename P2, typename P3> RefCountedObject(P1 p1,P2 p2,P3 p3)44 RefCountedObject(P1 p1, P2 p2, P3 p3) : T(p1, p2, p3), ref_count_(0) { 45 } 46 47 template<typename P1, typename P2, typename P3, typename P4> RefCountedObject(P1 p1,P2 p2,P3 p3,P4 p4)48 RefCountedObject(P1 p1, P2 p2, P3 p3, P4 p4) 49 : T(p1, p2, p3, p4), ref_count_(0) { 50 } 51 52 template<typename P1, typename P2, typename P3, typename P4, typename P5> RefCountedObject(P1 p1,P2 p2,P3 p3,P4 p4,P5 p5)53 RefCountedObject(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5) 54 : T(p1, p2, p3, p4, p5), ref_count_(0) { 55 } 56 AddRef()57 virtual int AddRef() { 58 return rtc::AtomicOps::Increment(&ref_count_); 59 } 60 Release()61 virtual int Release() { 62 int count = rtc::AtomicOps::Decrement(&ref_count_); 63 if (!count) { 64 delete this; 65 } 66 return count; 67 } 68 69 protected: ~RefCountedObject()70 virtual ~RefCountedObject() { 71 } 72 73 int ref_count_; 74 }; 75 76 } // namespace rtc 77 78 #endif // TALK_APP_BASE_REFCOUNT_H_ 79