1 | #ifndef BOOST_SERIALIZATION_SHARED_PTR_HPP |
2 | #define BOOST_SERIALIZATION_SHARED_PTR_HPP |
3 | |
4 | // MS compatible compilers support #pragma once |
5 | #if defined(_MSC_VER) |
6 | # pragma once |
7 | #endif |
8 | |
9 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
10 | // shared_ptr.hpp: serialization for boost shared pointer |
11 | |
12 | // (C) Copyright 2004 Robert Ramey and Martin Ecker |
13 | // Use, modification and distribution is subject to the Boost Software |
14 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
15 | // http://www.boost.org/LICENSE_1_0.txt) |
16 | |
17 | // See http://www.boost.org for updates, documentation, and revision history. |
18 | |
19 | #include <cstddef> // NULL |
20 | #include <memory> |
21 | |
22 | #include <boost/config.hpp> |
23 | #include <boost/mpl/integral_c.hpp> |
24 | #include <boost/mpl/integral_c_tag.hpp> |
25 | |
26 | #include <boost/detail/workaround.hpp> |
27 | #include <boost/shared_ptr.hpp> |
28 | |
29 | #include <boost/serialization/shared_ptr_helper.hpp> |
30 | #include <boost/serialization/split_free.hpp> |
31 | #include <boost/serialization/nvp.hpp> |
32 | #include <boost/serialization/version.hpp> |
33 | #include <boost/serialization/tracking.hpp> |
34 | |
35 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
36 | // boost:: shared_ptr serialization traits |
37 | // version 1 to distinguish from boost 1.32 version. Note: we can only do this |
38 | // for a template when the compiler supports partial template specialization |
39 | |
40 | #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
41 | namespace boost { |
42 | namespace serialization{ |
43 | template<class T> |
44 | struct version< ::boost::shared_ptr< T > > { |
45 | typedef mpl::integral_c_tag tag; |
46 | #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206)) |
47 | typedef typename mpl::int_<1> type; |
48 | #else |
49 | typedef mpl::int_<1> type; |
50 | #endif |
51 | BOOST_STATIC_CONSTANT(int, value = type::value); |
52 | }; |
53 | // don't track shared pointers |
54 | template<class T> |
55 | struct tracking_level< ::boost::shared_ptr< T > > { |
56 | typedef mpl::integral_c_tag tag; |
57 | #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206)) |
58 | typedef typename mpl::int_< ::boost::serialization::track_never> type; |
59 | #else |
60 | typedef mpl::int_< ::boost::serialization::track_never> type; |
61 | #endif |
62 | BOOST_STATIC_CONSTANT(int, value = type::value); |
63 | }; |
64 | }} |
65 | #define BOOST_SERIALIZATION_SHARED_PTR(T) |
66 | #else |
67 | // define macro to let users of these compilers do this |
68 | #define BOOST_SERIALIZATION_SHARED_PTR(T) \ |
69 | BOOST_CLASS_VERSION( \ |
70 | ::boost::shared_ptr< T >, \ |
71 | 1 \ |
72 | ) \ |
73 | BOOST_CLASS_TRACKING( \ |
74 | ::boost::shared_ptr< T >, \ |
75 | ::boost::serialization::track_never \ |
76 | ) \ |
77 | /**/ |
78 | #endif |
79 | |
80 | namespace boost { |
81 | namespace serialization{ |
82 | |
83 | struct null_deleter { |
84 | void operator()(void const *) const {} |
85 | }; |
86 | |
87 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
88 | // serialization for boost::shared_ptr |
89 | |
90 | // Using a constant means that all shared pointers are held in the same set. |
91 | // Thus we detect handle multiple pointers to the same value instances |
92 | // in the archive. |
93 | void * const shared_ptr_helper_id = 0; |
94 | |
95 | template<class Archive, class T> |
96 | inline void save( |
97 | Archive & ar, |
98 | const boost::shared_ptr< T > &t, |
99 | const unsigned int /* file_version */ |
100 | ){ |
101 | // The most common cause of trapping here would be serializing |
102 | // something like shared_ptr<int>. This occurs because int |
103 | // is never tracked by default. Wrap int in a trackable type |
104 | BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never)); |
105 | const T * t_ptr = t.get(); |
106 | ar << boost::serialization::make_nvp("px" , t_ptr); |
107 | } |
108 | |
109 | #ifdef BOOST_SERIALIZATION_SHARED_PTR_132_HPP |
110 | template<class Archive, class T> |
111 | inline void load( |
112 | Archive & ar, |
113 | boost::shared_ptr< T > &t, |
114 | const unsigned int file_version |
115 | ){ |
116 | // something like shared_ptr<int>. This occurs because int |
117 | // is never tracked by default. Wrap int in a trackable type |
118 | BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never)); |
119 | T* r; |
120 | if(file_version < 1){ |
121 | ar.register_type(static_cast< |
122 | boost_132::detail::sp_counted_base_impl<T *, null_deleter > * |
123 | >(NULL)); |
124 | boost_132::shared_ptr< T > sp; |
125 | ar >> boost::serialization::make_nvp("px" , sp.px); |
126 | ar >> boost::serialization::make_nvp("pn" , sp.pn); |
127 | // got to keep the sps around so the sp.pns don't disappear |
128 | boost::serialization::shared_ptr_helper<boost::shared_ptr> & h = |
129 | ar.template get_helper< shared_ptr_helper<boost::shared_ptr> >( |
130 | shared_ptr_helper_id |
131 | ); |
132 | h.append(t: sp); |
133 | r = sp.get(); |
134 | } |
135 | else{ |
136 | ar >> boost::serialization::make_nvp("px" , r); |
137 | } |
138 | shared_ptr_helper<boost::shared_ptr> & h = |
139 | ar.template get_helper<shared_ptr_helper<boost::shared_ptr> >( |
140 | shared_ptr_helper_id |
141 | ); |
142 | h.reset(t,r); |
143 | } |
144 | #else |
145 | |
146 | template<class Archive, class T> |
147 | inline void load( |
148 | Archive & ar, |
149 | boost::shared_ptr< T > &t, |
150 | const unsigned int /*file_version*/ |
151 | ){ |
152 | // The most common cause of trapping here would be serializing |
153 | // something like shared_ptr<int>. This occurs because int |
154 | // is never tracked by default. Wrap int in a trackable type |
155 | BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never)); |
156 | T* r; |
157 | ar >> boost::serialization::make_nvp("px" , r); |
158 | |
159 | boost::serialization::shared_ptr_helper<boost::shared_ptr> & h = |
160 | ar.template get_helper<shared_ptr_helper<boost::shared_ptr> >( |
161 | shared_ptr_helper_id |
162 | ); |
163 | h.reset(t,r); |
164 | } |
165 | #endif |
166 | |
167 | template<class Archive, class T> |
168 | inline void serialize( |
169 | Archive & ar, |
170 | boost::shared_ptr< T > &t, |
171 | const unsigned int file_version |
172 | ){ |
173 | // correct shared_ptr serialization depends upon object tracking |
174 | // being used. |
175 | BOOST_STATIC_ASSERT( |
176 | boost::serialization::tracking_level< T >::value |
177 | != boost::serialization::track_never |
178 | ); |
179 | boost::serialization::split_free(ar, t, file_version); |
180 | } |
181 | |
182 | } // namespace serialization |
183 | } // namespace boost |
184 | |
185 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
186 | // std::shared_ptr serialization traits |
187 | // version 1 to distinguish from boost 1.32 version. Note: we can only do this |
188 | // for a template when the compiler supports partial template specialization |
189 | |
190 | #ifndef BOOST_NO_CXX11_SMART_PTR |
191 | #include <boost/static_assert.hpp> |
192 | |
193 | // note: we presume that any compiler/library which supports C++11 |
194 | // std::pointers also supports template partial specialization |
195 | // trap here if such presumption were to turn out to wrong!!! |
196 | #ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
197 | BOOST_STATIC_ASSERT(false); |
198 | #endif |
199 | |
200 | namespace boost { |
201 | namespace serialization{ |
202 | template<class T> |
203 | struct version< ::std::shared_ptr< T > > { |
204 | typedef mpl::integral_c_tag tag; |
205 | typedef mpl::int_<1> type; |
206 | BOOST_STATIC_CONSTANT(int, value = type::value); |
207 | }; |
208 | // don't track shared pointers |
209 | template<class T> |
210 | struct tracking_level< ::std::shared_ptr< T > > { |
211 | typedef mpl::integral_c_tag tag; |
212 | typedef mpl::int_< ::boost::serialization::track_never> type; |
213 | BOOST_STATIC_CONSTANT(int, value = type::value); |
214 | }; |
215 | }} |
216 | // the following just keeps older programs from breaking |
217 | #define BOOST_SERIALIZATION_SHARED_PTR(T) |
218 | |
219 | namespace boost { |
220 | namespace serialization{ |
221 | |
222 | /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 |
223 | // serialization for std::shared_ptr |
224 | |
225 | template<class Archive, class T> |
226 | inline void save( |
227 | Archive & ar, |
228 | const std::shared_ptr< T > &t, |
229 | const unsigned int /* file_version */ |
230 | ){ |
231 | // The most common cause of trapping here would be serializing |
232 | // something like shared_ptr<int>. This occurs because int |
233 | // is never tracked by default. Wrap int in a trackable type |
234 | BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never)); |
235 | const T * t_ptr = t.get(); |
236 | ar << boost::serialization::make_nvp("px" , t_ptr); |
237 | } |
238 | |
239 | template<class Archive, class T> |
240 | inline void load( |
241 | Archive & ar, |
242 | std::shared_ptr< T > &t, |
243 | const unsigned int /*file_version*/ |
244 | ){ |
245 | // The most common cause of trapping here would be serializing |
246 | // something like shared_ptr<int>. This occurs because int |
247 | // is never tracked by default. Wrap int in a trackable type |
248 | BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never)); |
249 | T* r; |
250 | ar >> boost::serialization::make_nvp("px" , r); |
251 | //void (* const id)(Archive &, std::shared_ptr< T > &, const unsigned int) = & load; |
252 | boost::serialization::shared_ptr_helper<std::shared_ptr> & h = |
253 | ar.template get_helper< |
254 | shared_ptr_helper<std::shared_ptr> |
255 | >( |
256 | shared_ptr_helper_id |
257 | ); |
258 | h.reset(t,r); |
259 | } |
260 | |
261 | template<class Archive, class T> |
262 | inline void serialize( |
263 | Archive & ar, |
264 | std::shared_ptr< T > &t, |
265 | const unsigned int file_version |
266 | ){ |
267 | // correct shared_ptr serialization depends upon object tracking |
268 | // being used. |
269 | BOOST_STATIC_ASSERT( |
270 | boost::serialization::tracking_level< T >::value |
271 | != boost::serialization::track_never |
272 | ); |
273 | boost::serialization::split_free(ar, t, file_version); |
274 | } |
275 | |
276 | } // namespace serialization |
277 | } // namespace boost |
278 | |
279 | #endif // BOOST_NO_CXX11_SMART_PTR |
280 | |
281 | #endif // BOOST_SERIALIZATION_SHARED_PTR_HPP |
282 | |