Hello,
Recently I have used Boost for serialization. Unfortunatly it doesn't work with
hash_map. I work with Visual 8, and Visual 8 used the dinkumware version of std lib.
In order to make things working I have modified three files of boost :
in the folder config/stdlib :
dinkumware.hpp : BOOST_HAS_HASH is not defined.(why ?).
in the folder serialization :
hash_collections_load_imp.hpp : In this file I have made these changes :
template<class Archive, class Container, class InputFunction>
inline void load_hash_collection(Archive & ar, Container &s)
{
s.clear();
// retrieve number of elements
unsigned int count;
unsigned int item_version(0);
// unsigned int bucket_count;;
ar >> BOOST_SERIALIZATION_NVP(count);
// if(3 < ar.get_library_version()){
// ar >> BOOST_SERIALIZATION_NVP(bucket_count);
// ar >> BOOST_SERIALIZATION_NVP(item_version);
// }
// #if ! defined(__MWERKS__)
// s.resize(bucket_count);
// #endif
InputFunction ifunc;
while(count-- > 0){
ifunc(ar, s, item_version);
}
}
} // namespace stl
} // namespace serialization
} // namespace boost
hash_collections_save_imp.hpp : In this file I have made these changes :
template<class Archive, class Container>
inline void save_hash_collection(Archive & ar, const Container &s)
{
// record number of elements
unsigned int count = s.size();
ar << BOOST_SERIALIZATION_NVP(count);
// make sure the target type is registered so we can retrieve
// the version when we load
// if(3 < ar.get_library_version()){
// const unsigned int bucket_count = s.bucket_count();
// ar << BOOST_SERIALIZATION_NVP(bucket_count);
// const unsigned int item_version = version<BOOST_DEDUCED_TYPENAME Container::value_type>::value;
// ar << BOOST_SERIALIZATION_NVP(item_version);
// }
BOOST_DEDUCED_TYPENAME Container::const_iterator it = s.begin();
while(count-- > 0){
// note borland emits a no-op without the explicit namespace
boost::serialization::save_construct_data_adl(
ar,
&(*it),
boost::serialization::version<
BOOST_DEDUCED_TYPENAME Container::value_type
>::value
);
ar << boost::serialization::make_nvp("item", *it++);
}
}
} // namespace stl
} // namespace serialization
} // namespace boost
With this changes Serialization of hash_map works well.
Maybe you could make a :
#if (!defined dinkumware )
.....
# endif
In theses two files in order to make the serialization of hash_map with dinkumware working.
Thanks for your time and your so good library !
--
Christophe Loustaunau.