gecko-dev/gfx/layers/AtomicRefCountedWithFinalize.h

48 lines
996 B
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_ATOMICREFCOUNTEDWITHFINALIZE_H_
#define MOZILLA_ATOMICREFCOUNTEDWITHFINALIZE_H_
#include "mozilla/RefPtr.h"
namespace mozilla {
template<typename T>
class AtomicRefCountedWithFinalize
{
protected:
AtomicRefCountedWithFinalize()
: mRefCount(0)
{}
~AtomicRefCountedWithFinalize() {}
public:
void AddRef() {
MOZ_ASSERT(mRefCount >= 0);
++mRefCount;
}
void Release() {
MOZ_ASSERT(mRefCount > 0);
if (0 == --mRefCount) {
#ifdef DEBUG
mRefCount = detail::DEAD;
#endif
T* derived = static_cast<T*>(this);
derived->Finalize();
delete derived;
}
}
private:
Atomic<int> mRefCount;
};
}
#endif