73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
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* Copyright 2016 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_REFCOUNTEDOBJECT_H_
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#define RTC_BASE_REFCOUNTEDOBJECT_H_
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#include <utility>
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#include "rtc_base/constructormagic.h"
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#include "rtc_base/refcount.h"
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#include "rtc_base/refcounter.h"
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namespace rtc
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{
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template <class T>
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class RefCountedObject : public T
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{
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public:
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RefCountedObject() {}
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template <class P0>
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explicit RefCountedObject(P0&& p0)
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: T(std::forward<P0>(p0))
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{
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}
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template <class P0, class P1, class... Args>
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RefCountedObject(P0&& p0, P1&& p1, Args&&... args)
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: T(std::forward<P0>(p0),
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std::forward<P1>(p1),
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std::forward<Args>(args)...)
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{
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}
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virtual void AddRef() const { ref_count_.IncRef(); }
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virtual RefCountReleaseStatus Release() const
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{
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const auto status = ref_count_.DecRef();
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if (status == RefCountReleaseStatus::kDroppedLastRef)
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{
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delete this;
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}
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return status;
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}
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// Return whether the reference count is one. If the reference count is used
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// in the conventional way, a reference count of 1 implies that the current
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// thread owns the reference and no other thread shares it. This call
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// performs the test for a reference count of one, and performs the memory
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// barrier needed for the owning thread to act on the object, knowing that it
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// has exclusive access to the object.
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virtual bool HasOneRef() const { return ref_count_.HasOneRef(); }
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protected:
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virtual ~RefCountedObject() {}
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mutable webrtc::webrtc_impl::RefCounter ref_count_ {0};
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RTC_DISALLOW_COPY_AND_ASSIGN(RefCountedObject);
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};
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} // namespace rtc
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#endif // RTC_BASE_REFCOUNTEDOBJECT_H_
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