RefCounted.h

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/*
 * Copyright (C) 2022 The V-Gears Team
 *
 * This file is part of V-Gears
 *
 * V-Gears is free software: you can redistribute it and/or modify it under
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, version 3.0 (GPLv3) of the License.
 *
 * V-Gears is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */
 
#pragma once
 
class RefCounted;
 
inline void intrusive_ptr_add_ref(RefCounted *ptr);
inline void intrusive_ptr_release(RefCounted *ptr);
 
class RefCounted{
 
    protected:
        RefCounted(): ref_count_(0){}
        virtual ~RefCounted(){}
 
    private:
 
        long ref_count_;
 
        friend void ::intrusive_ptr_add_ref(RefCounted *ptr);
 
        friend void ::intrusive_ptr_release(RefCounted *ptr);
 
 
};
 
inline void intrusive_ptr_add_ref(RefCounted *ptr){++ (ptr->ref_count_);}
 
inline void intrusive_ptr_release(RefCounted *ptr){
    if (-- (ptr->ref_count_) == 0) delete ptr;
}