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// Copyright 2016 Klemens Morgenstern, Antony Polukhin // // Distributed under 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) // For more information, see http://www.boost.org #ifndef BOOST_DLL_DETAIL_TYPE_INFO_HPP_ #define BOOST_DLL_DETAIL_TYPE_INFO_HPP_ #include <typeinfo> #include <cstring> #include <boost/dll/config.hpp> #if defined(_MSC_VER) // MSVC, Clang-cl, and ICC on Windows #include <boost/winapi/basic_types.hpp> #endif namespace boost { namespace dll { namespace detail { #if defined(_MSC_VER) // MSVC, Clang-cl, and ICC on Windows #if defined ( _WIN64 ) template<typename Class, typename Lib, typename Storage> const std::type_info& load_type_info(Lib & lib, Storage & storage) { struct RTTICompleteObjectLocator { boost::winapi::DWORD_ signature; //always zero ? boost::winapi::DWORD_ offset; //offset of this vtable in the complete class boost::winapi::DWORD_ cdOffset; //constructor displacement offset boost::winapi::DWORD_ pTypeDescriptorOffset; //TypeDescriptor of the complete class boost::winapi::DWORD_ pClassDescriptorOffset; //describes inheritance hierarchy (ignored) }; RTTICompleteObjectLocator** vtable_p = &lib.template get<RTTICompleteObjectLocator*>(storage.template get_vtable<Class>()); vtable_p--; auto vtable = *vtable_p; auto nat = reinterpret_cast<const char*>(lib.native()); nat += vtable->pTypeDescriptorOffset; return *reinterpret_cast<const std::type_info*>(nat); } #else template<typename Class, typename Lib, typename Storage> const std::type_info& load_type_info(Lib & lib, Storage & storage) { struct RTTICompleteObjectLocator { boost::winapi::DWORD_ signature; //always zero ? boost::winapi::DWORD_ offset; //offset of this vtable in the complete class boost::winapi::DWORD_ cdOffset; //constructor displacement offset const std::type_info* pTypeDescriptor; //TypeDescriptor of the complete class void* pClassDescriptor; //describes inheritance hierarchy (ignored) }; RTTICompleteObjectLocator** vtable_p = &lib.template get<RTTICompleteObjectLocator*>(storage.template get_vtable<Class>()); vtable_p--; auto vtable = *vtable_p; return *vtable->pTypeDescriptor; } #endif //_WIN64 #else template<typename Class, typename Lib, typename Storage> const std::type_info& load_type_info(Lib & lib, Storage & storage) { return lib.template get<const std::type_info>(storage.template get_type_info<Class>()); } #endif }}} #endif /* BOOST_DLL_DETAIL_TYPE_INFO_HPP_ */
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