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https://github.com/wesnoth/wesnoth
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54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/* $Id$ */
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/*
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Copyright (C) 2008 - 2012 by David White <dave@whitevine.net>
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Part of the Battle for Wesnoth Project http://www.wesnoth.org/
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY.
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See the COPYING file for more details.
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*/
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#ifndef REFERENCE_COUNTED_OBJECT_HPP_INCLUDED
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#define REFERENCE_COUNTED_OBJECT_HPP_INCLUDED
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#include "boost/intrusive_ptr.hpp"
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class reference_counted_object
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{
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public:
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reference_counted_object() : count_(0) {}
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reference_counted_object(const reference_counted_object& /*obj*/) : count_(0) {}
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reference_counted_object& operator=(const reference_counted_object& /*obj*/) {
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return *this;
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}
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virtual ~reference_counted_object() {}
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void add_ref() const { ++count_; }
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void dec_ref() const { if(--count_ == 0) { delete const_cast<reference_counted_object*>(this); } }
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int refcount() const { return count_; }
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protected:
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void turn_reference_counting_off() const { count_ = 1000000; }
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private:
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mutable int count_;
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};
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inline void intrusive_ptr_add_ref(const reference_counted_object* obj) {
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obj->add_ref();
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}
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inline void intrusive_ptr_release(const reference_counted_object* obj) {
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obj->dec_ref();
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}
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typedef boost::intrusive_ptr<reference_counted_object> object_ptr;
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typedef boost::intrusive_ptr<const reference_counted_object> const_object_ptr;
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#endif
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