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223 lines
7.4 KiB
C++
223 lines
7.4 KiB
C++
#ifndef BOOST_SERIALIZATION_SHARED_PTR_132_HPP
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#define BOOST_SERIALIZATION_SHARED_PTR_132_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER)
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# pragma once
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// shared_ptr.hpp: serialization for boost shared pointer
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// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org for updates, documentation, and revision history.
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// note: totally unadvised hack to gain access to private variables
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// in shared_ptr and shared_count. Unfortunately its the only way to
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// do this without changing shared_ptr and shared_count
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// the best we can do is to detect a conflict here
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#include <boost/config.hpp>
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#include <list>
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#include <cstddef> // NULL
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#include <boost/serialization/assume_abstract.hpp>
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#include <boost/serialization/split_free.hpp>
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#include <boost/serialization/nvp.hpp>
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#include <boost/serialization/tracking.hpp>
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#include <boost/serialization/void_cast.hpp>
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// mark base class as an (uncreatable) base class
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#include <boost/serialization/detail/shared_ptr_132.hpp>
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/////////////////////////////////////////////////////////////
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// Maintain a couple of lists of loaded shared pointers of the old previous
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// version (1.32)
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namespace boost_132 {
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namespace serialization {
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namespace detail {
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struct null_deleter {
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void operator()(void const *) const {}
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};
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} // namespace detail
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} // namespace serialization
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} // namespace boost_132
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/////////////////////////////////////////////////////////////
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// sp_counted_base_impl serialization
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namespace boost {
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namespace serialization {
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template<class Archive, class P, class D>
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inline void serialize(
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Archive & /* ar */,
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boost_132::detail::sp_counted_base_impl<P, D> & /* t */,
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const unsigned int /*file_version*/
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){
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// register the relationship between each derived class
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// its polymorphic base
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boost::serialization::void_cast_register<
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boost_132::detail::sp_counted_base_impl<P, D>,
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boost_132::detail::sp_counted_base
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>(
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static_cast<boost_132::detail::sp_counted_base_impl<P, D> *>(NULL),
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static_cast<boost_132::detail::sp_counted_base *>(NULL)
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);
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}
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template<class Archive, class P, class D>
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inline void save_construct_data(
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Archive & ar,
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const
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boost_132::detail::sp_counted_base_impl<P, D> *t,
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const unsigned int /* file_version */
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){
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// variables used for construction
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ar << boost::serialization::make_nvp("ptr", t->ptr);
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}
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template<class Archive, class P, class D>
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inline void load_construct_data(
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Archive & ar,
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boost_132::detail::sp_counted_base_impl<P, D> * t,
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const unsigned int /* file_version */
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){
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P ptr_;
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ar >> boost::serialization::make_nvp("ptr", ptr_);
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// ::new(t)boost_132::detail::sp_counted_base_impl<P, D>(ptr_, D());
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// placement
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// note: the original ::new... above is replaced by the one here. This one
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// creates all new objects with a null_deleter so that after the archive
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// is finished loading and the shared_ptrs are destroyed - the underlying
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// raw pointers are NOT deleted. This is necessary as they are used by the
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// new system as well.
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::new(t)boost_132::detail::sp_counted_base_impl<
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P,
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boost_132::serialization::detail::null_deleter
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>(
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ptr_, boost_132::serialization::detail::null_deleter()
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); // placement new
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// compensate for that fact that a new shared count always is
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// initialized with one. the add_ref_copy below will increment it
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// every time its serialized so without this adjustment
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// the use and weak counts will be off by one.
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t->use_count_ = 0;
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}
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} // serialization
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} // namespace boost
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/////////////////////////////////////////////////////////////
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// shared_count serialization
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namespace boost {
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namespace serialization {
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template<class Archive>
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inline void save(
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Archive & ar,
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const boost_132::detail::shared_count &t,
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const unsigned int /* file_version */
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){
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ar << boost::serialization::make_nvp("pi", t.pi_);
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}
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template<class Archive>
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inline void load(
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Archive & ar,
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boost_132::detail::shared_count &t,
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const unsigned int /* file_version */
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){
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ar >> boost::serialization::make_nvp("pi", t.pi_);
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if(NULL != t.pi_)
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t.pi_->add_ref_copy();
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}
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} // serialization
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} // namespace boost
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BOOST_SERIALIZATION_SPLIT_FREE(boost_132::detail::shared_count)
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/////////////////////////////////////////////////////////////
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// implement serialization for shared_ptr< T >
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namespace boost {
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namespace serialization {
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template<class Archive, class T>
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inline void save(
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Archive & ar,
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const boost_132::shared_ptr< T > &t,
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const unsigned int /* file_version */
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){
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// only the raw pointer has to be saved
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// the ref count is maintained automatically as shared pointers are loaded
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ar.register_type(static_cast<
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boost_132::detail::sp_counted_base_impl<T *, boost::checked_deleter< T > > *
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>(NULL));
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ar << boost::serialization::make_nvp("px", t.px);
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ar << boost::serialization::make_nvp("pn", t.pn);
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}
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template<class Archive, class T>
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inline void load(
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Archive & ar,
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boost_132::shared_ptr< T > &t,
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const unsigned int /* file_version */
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){
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// only the raw pointer has to be saved
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// the ref count is maintained automatically as shared pointers are loaded
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ar.register_type(static_cast<
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boost_132::detail::sp_counted_base_impl<T *, boost::checked_deleter< T > > *
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>(NULL));
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ar >> boost::serialization::make_nvp("px", t.px);
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ar >> boost::serialization::make_nvp("pn", t.pn);
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}
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template<class Archive, class T>
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inline void serialize(
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Archive & ar,
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boost_132::shared_ptr< T > &t,
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const unsigned int file_version
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){
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// correct shared_ptr serialization depends upon object tracking
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// being used.
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BOOST_STATIC_ASSERT(
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boost::serialization::tracking_level< T >::value
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!= boost::serialization::track_never
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);
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boost::serialization::split_free(ar, t, file_version);
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}
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} // serialization
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} // namespace boost
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// note: change below uses null_deleter
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// This macro is used to export GUIDS for shared pointers to allow
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// the serialization system to export them properly. David Tonge
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#define BOOST_SHARED_POINTER_EXPORT_GUID(T, K) \
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typedef boost_132::detail::sp_counted_base_impl< \
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T *, \
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boost::checked_deleter< T > \
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> __shared_ptr_ ## T; \
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BOOST_CLASS_EXPORT_GUID(__shared_ptr_ ## T, "__shared_ptr_" K) \
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BOOST_CLASS_EXPORT_GUID(T, K) \
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/**/
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#define BOOST_SHARED_POINTER_EXPORT(T) \
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BOOST_SHARED_POINTER_EXPORT_GUID( \
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T, \
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BOOST_PP_STRINGIZE(T) \
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) \
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/**/
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#endif // BOOST_SERIALIZATION_SHARED_PTR_132_HPP
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