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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(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 |