archive_pointer_oserializer.ipp

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// archive_pointer_oserializer.ipp: 

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org for updates, documentation, and revision history.

#include <utility>
#include <cassert>

#include <boost/config.hpp> // msvc 6.0 needs this for warning suppression

#include <boost/archive/detail/archive_pointer_oserializer.hpp>
#include <boost/archive/detail/basic_serializer_map.hpp>
#include <boost/serialization/singleton.hpp>

namespace boost { 
namespace archive {
namespace detail {

namespace { // anon
    template<class Archive>
    class oserializer_map : public basic_serializer_map 
    {
    };
}

template<class Archive>
BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
archive_pointer_oserializer<Archive>::archive_pointer_oserializer(
    const boost::serialization::extended_type_info & eti
) :
    basic_pointer_oserializer(eti)
{
    std::pair<
        BOOST_DEDUCED_TYPENAME oserializer_map<Archive>::iterator, 
        bool
    > result;
    result = serialization::singleton<
            oserializer_map<Archive>
        >::get_mutable_instance().insert(this);
    assert(result.second);
}

template<class Archive>
BOOST_ARCHIVE_OR_WARCHIVE_DECL(const basic_pointer_oserializer *) 
archive_pointer_oserializer<Archive>::find(
    const boost::serialization::extended_type_info & eti
){
    const basic_serializer_arg bs(eti);
    basic_serializer_map::const_iterator it;
    it =  boost::serialization::singleton<
            oserializer_map<Archive>
        >::get_const_instance().find(& bs);
    assert(
        it 
        != 
        boost::serialization::singleton<
                oserializer_map<Archive>
            >::get_const_instance().end()
    );
    return static_cast<const basic_pointer_oserializer *>(*it);
}

template<class Archive>
BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
archive_pointer_oserializer<Archive>::~archive_pointer_oserializer(){
    // note: we need to check that the map still exists as we can't depend
    // on static variables being constructed in a specific sequence
    if(! serialization::singleton<
            oserializer_map<Archive> 
        >::is_destroyed()
    ){
        unsigned int count;
        count = serialization::singleton<
                oserializer_map<Archive>
            >::get_mutable_instance().erase(this);
        assert(count);
    }
}

} // namespace detail
} // namespace archive
} // namespace boost