intrusive_refcount.hh

Go to the documentation of this file.

//
// Copyright (c) 2020 Fraunhofer Institute for Applied Information Technology (FIT)
//                    Network Research Group (NET)
//                    Schloss Birlinghoven, 53754 Sankt Augustin, GERMANY
//                    Contact: support@wiback.org
//
// This file is part of the SENF code tree.
// It is licensed under the 3-clause BSD License (aka New BSD License).
// See LICENSE.txt in the top level directory for details or visit
// https://opensource.org/licenses/BSD-3-Clause
//


#ifndef HH_SENF_Utils_intrusive_refcount_
#define HH_SENF_Utils_intrusive_refcount_ 1

// Custom includes
#include <boost/noncopyable.hpp>

//#include "intrusive_refcount.mpp"
//-/////////////////////////////////////////////////////////////////////////////////////////////////

namespace senf {

    template <class Self> class intrusive_refcount_t;
    
    template <class Self>
    void intrusive_ptr_add_ref(intrusive_refcount_t<Self> const * p);
    template <class Self>
    void intrusive_ptr_release(intrusive_refcount_t<Self> const * p);
    

    class intrusive_refcount_base
        : public boost::noncopyable
    {
    public:
        typedef unsigned refcount_t;    

        virtual ~intrusive_refcount_base();

        refcount_t refcount() const;    
        bool is_shared() const;         

    protected:
        intrusive_refcount_base();

        void add_ref();
        bool release();

    private:
        refcount_t refcount_;

        template <class S> void intrusive_ptr_add_ref();
        template <class S> void intrusive_ptr_release();

        template <class S>
        friend void senf::intrusive_ptr_add_ref(intrusive_refcount_t<S> const * p);
        template <class S>
        friend void senf::intrusive_ptr_release(intrusive_refcount_t<S> const * p);
    };

    template <class Self>
    class intrusive_refcount_t
        : public intrusive_refcount_base
    {
    protected:
        intrusive_refcount_t();
    };

    class intrusive_refcount
        : public intrusive_refcount_t<intrusive_refcount>
    {
    protected:
        intrusive_refcount();
    };

}

//-/////////////////////////////////////////////////////////////////////////////////////////////////
#include "intrusive_refcount.cci"
//#include "intrusive_refcount.ct"
#include "intrusive_refcount.cti"
#endif


// Local Variables:
// mode: c++
// fill-column: 100
// c-file-style: "senf"
// indent-tabs-mode: nil
// ispell-local-dictionary: "american"
// compile-command: "scons -u test"
// comment-column: 40
// End: