1 | #include <boost/config.hpp> |
2 | |
3 | // shared_ptr_alias_move_test.cpp |
4 | // |
5 | // Copyright (c) 2007 Peter Dimov |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. (See |
8 | // accompanying file LICENSE_1_0.txt or copy at |
9 | // http://www.boost.org/LICENSE_1_0.txt) |
10 | |
11 | |
12 | #include <boost/core/lightweight_test.hpp> |
13 | #include <boost/shared_ptr.hpp> |
14 | #include <utility> |
15 | |
16 | #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
17 | |
18 | class incomplete; |
19 | |
20 | struct X |
21 | { |
22 | static long instances; |
23 | |
24 | int v_; |
25 | |
26 | explicit X( int v ): v_( v ) |
27 | { |
28 | ++instances; |
29 | } |
30 | |
31 | ~X() |
32 | { |
33 | v_ = 0; |
34 | --instances; |
35 | } |
36 | |
37 | private: |
38 | X( X const & ); |
39 | X & operator=( X const & ); |
40 | }; |
41 | |
42 | long X::instances = 0; |
43 | |
44 | int main() |
45 | { |
46 | BOOST_TEST( X::instances == 0 ); |
47 | |
48 | { |
49 | int m = 0; |
50 | boost::shared_ptr< int > p; |
51 | boost::shared_ptr< int > p2( std::move( p ), &m ); |
52 | |
53 | BOOST_TEST( p2.get() == &m ); |
54 | BOOST_TEST( p2? true: false ); |
55 | BOOST_TEST( !!p2 ); |
56 | BOOST_TEST( p2.use_count() == 0 ); |
57 | |
58 | BOOST_TEST( p.get() == 0 ); |
59 | BOOST_TEST( p.use_count() == 0 ); |
60 | |
61 | p2.reset( r: std::move( p ), p: 0 ); |
62 | |
63 | BOOST_TEST( p2.get() == 0 ); |
64 | BOOST_TEST( p2? false: true ); |
65 | BOOST_TEST( !p2 ); |
66 | BOOST_TEST( p2.use_count() == 0 ); |
67 | |
68 | BOOST_TEST( p.get() == 0 ); |
69 | BOOST_TEST( p.use_count() == 0 ); |
70 | } |
71 | |
72 | { |
73 | int m = 0; |
74 | boost::shared_ptr< int > p( new int ); |
75 | boost::shared_ptr< int const > p2( std::move( p ), &m ); |
76 | |
77 | BOOST_TEST( p2.get() == &m ); |
78 | BOOST_TEST( p2? true: false ); |
79 | BOOST_TEST( !!p2 ); |
80 | BOOST_TEST( p2.use_count() == 1 ); |
81 | |
82 | BOOST_TEST( p.get() == 0 ); |
83 | BOOST_TEST( p.use_count() == 0 ); |
84 | |
85 | boost::shared_ptr< int volatile > p3; |
86 | p2.reset( r: std::move( p3 ), p: 0 ); |
87 | |
88 | BOOST_TEST( p2.get() == 0 ); |
89 | BOOST_TEST( p2? false: true ); |
90 | BOOST_TEST( !p2 ); |
91 | BOOST_TEST( p2.use_count() == 0 ); |
92 | |
93 | BOOST_TEST( p3.get() == 0 ); |
94 | BOOST_TEST( p3.use_count() == 0 ); |
95 | |
96 | boost::shared_ptr< int const volatile > p4( new int ); |
97 | p2.reset( r: std::move( p4 ), p: &m ); |
98 | |
99 | BOOST_TEST( p2.get() == &m ); |
100 | BOOST_TEST( p2.use_count() == 1 ); |
101 | |
102 | BOOST_TEST( p4.get() == 0 ); |
103 | BOOST_TEST( p4.use_count() == 0 ); |
104 | } |
105 | |
106 | { |
107 | boost::shared_ptr< int > p( new int ); |
108 | boost::shared_ptr< void const > p2( std::move( p ), 0 ); |
109 | |
110 | BOOST_TEST( p2.get() == 0 ); |
111 | BOOST_TEST( p2? false: true ); |
112 | BOOST_TEST( !p2 ); |
113 | BOOST_TEST( p2.use_count() == 1 ); |
114 | |
115 | BOOST_TEST( p.get() == 0 ); |
116 | BOOST_TEST( p.use_count() == 0 ); |
117 | |
118 | int m = 0; |
119 | boost::shared_ptr< void volatile > p3; |
120 | |
121 | p2.reset( r: std::move( p3 ), p: &m ); |
122 | |
123 | BOOST_TEST( p2.get() == &m ); |
124 | BOOST_TEST( p2? true: false ); |
125 | BOOST_TEST( !!p2 ); |
126 | BOOST_TEST( p2.use_count() == 0 ); |
127 | |
128 | BOOST_TEST( p3.get() == 0 ); |
129 | BOOST_TEST( p3.use_count() == 0 ); |
130 | |
131 | boost::shared_ptr< void const volatile > p4( new int ); |
132 | p2.reset( r: std::move( p4 ), p: 0 ); |
133 | |
134 | BOOST_TEST( p2.get() == 0 ); |
135 | BOOST_TEST( p2.use_count() == 1 ); |
136 | |
137 | BOOST_TEST( p4.get() == 0 ); |
138 | BOOST_TEST( p4.use_count() == 0 ); |
139 | } |
140 | |
141 | { |
142 | boost::shared_ptr< incomplete > p; |
143 | boost::shared_ptr< incomplete > p2( std::move( p ), 0 ); |
144 | |
145 | BOOST_TEST( p2.get() == 0 ); |
146 | BOOST_TEST( p2? false: true ); |
147 | BOOST_TEST( !p2 ); |
148 | BOOST_TEST( p2.use_count() == 0 ); |
149 | |
150 | BOOST_TEST( p.get() == 0 ); |
151 | BOOST_TEST( p.use_count() == 0 ); |
152 | |
153 | p2.reset( r: std::move( p ), p: 0 ); |
154 | |
155 | BOOST_TEST( p2.get() == 0 ); |
156 | BOOST_TEST( p2? false: true ); |
157 | BOOST_TEST( !p2 ); |
158 | BOOST_TEST( p2.use_count() == 0 ); |
159 | |
160 | BOOST_TEST( p.get() == 0 ); |
161 | BOOST_TEST( p.use_count() == 0 ); |
162 | } |
163 | |
164 | { |
165 | boost::shared_ptr< X > p( new X( 5 ) ), q( p ); |
166 | boost::shared_ptr< int const > p2( std::move( q ), &q->v_ ); |
167 | |
168 | BOOST_TEST( p2.get() == &p->v_ ); |
169 | BOOST_TEST( p2? true: false ); |
170 | BOOST_TEST( !!p2 ); |
171 | BOOST_TEST( p2.use_count() == p.use_count() ); |
172 | BOOST_TEST( !( p < p2 ) && !( p2 < p ) ); |
173 | |
174 | BOOST_TEST( q.get() == 0 ); |
175 | BOOST_TEST( q.use_count() == 0 ); |
176 | |
177 | p.reset(); |
178 | BOOST_TEST( *p2 == 5 ); |
179 | |
180 | boost::shared_ptr< X const > p3( new X( 8 ) ), q3( p3 ); |
181 | p2.reset( r: std::move( q3 ), p: &q3->v_ ); |
182 | |
183 | BOOST_TEST( p2.get() == &p3->v_ ); |
184 | BOOST_TEST( p2? true: false ); |
185 | BOOST_TEST( !!p2 ); |
186 | BOOST_TEST( p2.use_count() == p3.use_count() ); |
187 | BOOST_TEST( !( p3 < p2 ) && !( p2 < p3 ) ); |
188 | |
189 | BOOST_TEST( q3.get() == 0 ); |
190 | BOOST_TEST( q3.use_count() == 0 ); |
191 | |
192 | p3.reset(); |
193 | BOOST_TEST( *p2 == 8 ); |
194 | } |
195 | |
196 | { |
197 | boost::shared_ptr< X > p( new X( 5 ) ); |
198 | BOOST_TEST( X::instances == 1 ); |
199 | BOOST_TEST( p.unique() ); |
200 | BOOST_TEST( p->v_ == 5 ); |
201 | |
202 | boost::shared_ptr< X > p2( std::move( p ), p.get() ); |
203 | BOOST_TEST( X::instances == 1 ); |
204 | BOOST_TEST( p.get() == 0 ); |
205 | BOOST_TEST( p2.unique() ); |
206 | BOOST_TEST( p2->v_ == 5 ); |
207 | |
208 | boost::shared_ptr< int const > p3( std::move( p2 ), &p2->v_ ); |
209 | BOOST_TEST( X::instances == 1 ); |
210 | BOOST_TEST( p2.get() == 0 ); |
211 | BOOST_TEST( p3.unique() ); |
212 | BOOST_TEST( *p3 == 5 ); |
213 | |
214 | p3.reset(); |
215 | BOOST_TEST( X::instances == 0 ); |
216 | } |
217 | |
218 | { |
219 | boost::shared_ptr< X > p( new X( 5 ) ); |
220 | BOOST_TEST( X::instances == 1 ); |
221 | BOOST_TEST( p.unique() ); |
222 | BOOST_TEST( p->v_ == 5 ); |
223 | |
224 | { |
225 | boost::shared_ptr< X > p2(p); |
226 | BOOST_TEST( X::instances == 1 ); |
227 | BOOST_TEST( p.get() == p2.get() ); |
228 | BOOST_TEST( p.use_count() == 2 ); |
229 | BOOST_TEST( p2.use_count() == 2 ); |
230 | |
231 | boost::shared_ptr< int const > p3( std::move( p2 ), &p2->v_ ); |
232 | BOOST_TEST( X::instances == 1 ); |
233 | BOOST_TEST( p.use_count() == 2 ); |
234 | BOOST_TEST( p2.use_count() == 0 ); |
235 | BOOST_TEST( p2.get() == 0 ); |
236 | BOOST_TEST( p3.use_count() == 2 ); |
237 | BOOST_TEST( p3.get() == &p->v_ ); |
238 | } |
239 | |
240 | BOOST_TEST( X::instances == 1 ); |
241 | BOOST_TEST( p.unique() ); |
242 | BOOST_TEST( p->v_ == 5 ); |
243 | } |
244 | |
245 | return boost::report_errors(); |
246 | } |
247 | |
248 | #else // defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
249 | |
250 | int main() |
251 | { |
252 | return 0; |
253 | } |
254 | |
255 | #endif |
256 | |