You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
10 years ago
|
/*
|
||
|
|
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Use of this source code is governed by a BSD-style license
|
||
|
|
* that can be found in the LICENSE file in the root of the source
|
||
|
|
* tree. An additional intellectual property rights grant can be found
|
||
|
|
* in the file PATENTS. All contributing project authors may
|
||
|
|
* be found in the AUTHORS file in the root of the source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef SYSTEM_WRAPPERS_INTERFACE_REF_COUNT_H_
|
||
|
|
#define SYSTEM_WRAPPERS_INTERFACE_REF_COUNT_H_
|
||
|
|
|
||
|
|
#include "webrtc/system_wrappers/interface/atomic32.h"
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
// This class can be used for instantiating
|
||
|
|
// reference counted objects.
|
||
|
|
// int32_t AddRef() and int32_t Release().
|
||
|
|
// Usage:
|
||
|
|
// RefCountImpl<T>* implementation = new RefCountImpl<T>(p);
|
||
|
|
//
|
||
|
|
// Example:
|
||
|
|
// class MyInterface {
|
||
|
|
// public:
|
||
|
|
// virtual void DoSomething() = 0;
|
||
|
|
// virtual int32_t AddRef() = 0;
|
||
|
|
// virtual int32_t Release() = 0:
|
||
|
|
// private:
|
||
|
|
// virtual ~MyInterface(){};
|
||
|
|
// }
|
||
|
|
// class MyImplementation : public MyInterface {
|
||
|
|
// public:
|
||
|
|
// virtual DoSomething() { printf("hello"); };
|
||
|
|
// };
|
||
|
|
// MyImplementation* CreateMyImplementation() {
|
||
|
|
// RefCountImpl<MyImplementation>* implementation =
|
||
|
|
// new RefCountImpl<MyImplementation>();
|
||
|
|
// return implementation;
|
||
|
|
// }
|
||
|
|
|
||
|
|
template <class T>
|
||
|
|
class RefCountImpl : public T {
|
||
|
|
public:
|
||
|
|
RefCountImpl() : ref_count_(0) {}
|
||
|
|
|
||
|
|
template<typename P>
|
||
|
|
explicit RefCountImpl(P p) : T(p), ref_count_(0) {}
|
||
|
|
|
||
|
|
template<typename P1, typename P2>
|
||
|
|
RefCountImpl(P1 p1, P2 p2) : T(p1, p2), ref_count_(0) {}
|
||
|
|
|
||
|
|
template<typename P1, typename P2, typename P3>
|
||
|
|
RefCountImpl(P1 p1, P2 p2, P3 p3) : T(p1, p2, p3), ref_count_(0) {}
|
||
|
|
|
||
|
|
template<typename P1, typename P2, typename P3, typename P4>
|
||
|
|
RefCountImpl(P1 p1, P2 p2, P3 p3, P4 p4) : T(p1, p2, p3, p4), ref_count_(0) {}
|
||
|
|
|
||
|
|
template<typename P1, typename P2, typename P3, typename P4, typename P5>
|
||
|
|
RefCountImpl(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5)
|
||
|
|
: T(p1, p2, p3, p4, p5), ref_count_(0) {}
|
||
|
|
|
||
|
|
virtual int32_t AddRef() {
|
||
|
|
return ++ref_count_;
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual int32_t Release() {
|
||
|
|
int32_t ref_count;
|
||
|
|
ref_count = --ref_count_;
|
||
|
|
if (ref_count == 0)
|
||
|
|
delete this;
|
||
|
|
return ref_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
Atomic32 ref_count_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // SYSTEM_WRAPPERS_INTERFACE_REF_COUNT_H_
|