1 | // |
2 | // sp_unique_ptr_test.cpp |
3 | // |
4 | // Copyright (c) 2012 Peter Dimov |
5 | // |
6 | // Distributed under the Boost Software License, Version 1.0. |
7 | // See accompanying file LICENSE_1_0.txt or copy at |
8 | // http://www.boost.org/LICENSE_1_0.txt |
9 | // |
10 | |
11 | #include <boost/shared_ptr.hpp> |
12 | #include <boost/enable_shared_from_this.hpp> |
13 | #include <boost/core/lightweight_test.hpp> |
14 | #include <boost/type_traits/remove_reference.hpp> |
15 | #include <memory> |
16 | #include <utility> |
17 | |
18 | #if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
19 | |
20 | struct X: public boost::enable_shared_from_this< X > |
21 | { |
22 | static int instances; |
23 | |
24 | X() |
25 | { |
26 | ++instances; |
27 | } |
28 | |
29 | ~X() |
30 | { |
31 | --instances; |
32 | } |
33 | |
34 | private: |
35 | |
36 | X( X const & ); |
37 | X & operator=( X const & ); |
38 | }; |
39 | |
40 | int X::instances = 0; |
41 | |
42 | struct Y |
43 | { |
44 | static int instances; |
45 | |
46 | bool deleted_; |
47 | |
48 | Y(): deleted_( false ) |
49 | { |
50 | ++instances; |
51 | } |
52 | |
53 | ~Y() |
54 | { |
55 | BOOST_TEST( deleted_ ); |
56 | --instances; |
57 | } |
58 | |
59 | private: |
60 | |
61 | Y( Y const & ); |
62 | Y & operator=( Y const & ); |
63 | }; |
64 | |
65 | int Y::instances = 0; |
66 | |
67 | struct YD |
68 | { |
69 | void operator()( Y* p ) const |
70 | { |
71 | if( p ) |
72 | { |
73 | p->deleted_ = true; |
74 | delete p; |
75 | } |
76 | else |
77 | { |
78 | BOOST_ERROR( "YD::operator()(0) called" ); |
79 | } |
80 | } |
81 | }; |
82 | |
83 | template<class U, class T, class D> static void test_null_unique_ptr( std::unique_ptr<T, D> p1, std::unique_ptr<T, D> p2 ) |
84 | { |
85 | BOOST_TEST( T::instances == 0 ); |
86 | |
87 | boost::shared_ptr<U> sp( std::move( p1 ) ); |
88 | |
89 | BOOST_TEST( sp.get() == 0 ); |
90 | BOOST_TEST( sp.use_count() == 0 ); |
91 | |
92 | sp.reset( new T, typename boost::remove_reference<D>::type() ); |
93 | |
94 | BOOST_TEST( sp.get() != 0 ); |
95 | BOOST_TEST( sp.use_count() == 1 ); |
96 | |
97 | BOOST_TEST( T::instances == 1 ); |
98 | |
99 | sp = std::move( p2 ); |
100 | |
101 | BOOST_TEST( sp.get() == 0 ); |
102 | BOOST_TEST( sp.use_count() == 0 ); |
103 | |
104 | BOOST_TEST( T::instances == 0 ); |
105 | } |
106 | |
107 | int main() |
108 | { |
109 | { |
110 | BOOST_TEST( X::instances == 0 ); |
111 | |
112 | std::unique_ptr<X> p( new X ); |
113 | BOOST_TEST( X::instances == 1 ); |
114 | |
115 | boost::shared_ptr<X> p2( std::move( p ) ); |
116 | BOOST_TEST( X::instances == 1 ); |
117 | BOOST_TEST( p.get() == 0 ); |
118 | |
119 | boost::shared_ptr<X> p3 = p2->shared_from_this(); |
120 | BOOST_TEST( p2 == p3 ); |
121 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
122 | |
123 | p2.reset(); |
124 | p3.reset(); |
125 | BOOST_TEST( X::instances == 0 ); |
126 | |
127 | p2 = std::unique_ptr<X>( new X ); |
128 | BOOST_TEST( X::instances == 1 ); |
129 | |
130 | p2 = std::unique_ptr<X>( new X ); |
131 | BOOST_TEST( X::instances == 1 ); |
132 | |
133 | p2.reset(); |
134 | BOOST_TEST( X::instances == 0 ); |
135 | } |
136 | |
137 | { |
138 | BOOST_TEST( X::instances == 0 ); |
139 | |
140 | std::unique_ptr<X> p( new X ); |
141 | BOOST_TEST( X::instances == 1 ); |
142 | |
143 | boost::shared_ptr<X const> p2( std::move( p ) ); |
144 | BOOST_TEST( X::instances == 1 ); |
145 | BOOST_TEST( p.get() == 0 ); |
146 | |
147 | boost::shared_ptr<X const> p3 = p2->shared_from_this(); |
148 | BOOST_TEST( p2 == p3 ); |
149 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
150 | |
151 | p2.reset(); |
152 | p3.reset(); |
153 | BOOST_TEST( X::instances == 0 ); |
154 | |
155 | p2 = std::unique_ptr<X>( new X ); |
156 | BOOST_TEST( X::instances == 1 ); |
157 | |
158 | p2 = std::unique_ptr<X>( new X ); |
159 | BOOST_TEST( X::instances == 1 ); |
160 | |
161 | p2.reset(); |
162 | BOOST_TEST( X::instances == 0 ); |
163 | } |
164 | |
165 | { |
166 | BOOST_TEST( X::instances == 0 ); |
167 | |
168 | std::unique_ptr<X> p( new X ); |
169 | BOOST_TEST( X::instances == 1 ); |
170 | |
171 | boost::shared_ptr<void> p2( std::move( p ) ); |
172 | BOOST_TEST( X::instances == 1 ); |
173 | BOOST_TEST( p.get() == 0 ); |
174 | |
175 | p2.reset(); |
176 | BOOST_TEST( X::instances == 0 ); |
177 | |
178 | p2 = std::unique_ptr<X>( new X ); |
179 | BOOST_TEST( X::instances == 1 ); |
180 | |
181 | p2 = std::unique_ptr<X>( new X ); |
182 | BOOST_TEST( X::instances == 1 ); |
183 | |
184 | p2.reset(); |
185 | BOOST_TEST( X::instances == 0 ); |
186 | } |
187 | |
188 | { |
189 | BOOST_TEST( Y::instances == 0 ); |
190 | |
191 | std::unique_ptr<Y, YD> p( new Y, YD() ); |
192 | BOOST_TEST( Y::instances == 1 ); |
193 | |
194 | boost::shared_ptr<Y> p2( std::move( p ) ); |
195 | BOOST_TEST( Y::instances == 1 ); |
196 | BOOST_TEST( p.get() == 0 ); |
197 | |
198 | p2.reset(); |
199 | BOOST_TEST( Y::instances == 0 ); |
200 | |
201 | p2 = std::unique_ptr<Y, YD>( new Y, YD() ); |
202 | BOOST_TEST( Y::instances == 1 ); |
203 | |
204 | p2 = std::unique_ptr<Y, YD>( new Y, YD() ); |
205 | BOOST_TEST( Y::instances == 1 ); |
206 | |
207 | p2.reset(); |
208 | BOOST_TEST( Y::instances == 0 ); |
209 | } |
210 | |
211 | { |
212 | BOOST_TEST( Y::instances == 0 ); |
213 | |
214 | YD yd; |
215 | |
216 | std::unique_ptr<Y, YD&> p( new Y, yd ); |
217 | BOOST_TEST( Y::instances == 1 ); |
218 | |
219 | boost::shared_ptr<Y> p2( std::move( p ) ); |
220 | BOOST_TEST( Y::instances == 1 ); |
221 | BOOST_TEST( p.get() == 0 ); |
222 | |
223 | p2.reset(); |
224 | BOOST_TEST( Y::instances == 0 ); |
225 | |
226 | p2 = std::unique_ptr<Y, YD&>( new Y, yd ); |
227 | BOOST_TEST( Y::instances == 1 ); |
228 | |
229 | p2 = std::unique_ptr<Y, YD&>( new Y, yd ); |
230 | BOOST_TEST( Y::instances == 1 ); |
231 | |
232 | p2.reset(); |
233 | BOOST_TEST( Y::instances == 0 ); |
234 | } |
235 | |
236 | { |
237 | BOOST_TEST( Y::instances == 0 ); |
238 | |
239 | YD yd; |
240 | |
241 | std::unique_ptr<Y, YD const&> p( new Y, yd ); |
242 | BOOST_TEST( Y::instances == 1 ); |
243 | |
244 | boost::shared_ptr<Y> p2( std::move( p ) ); |
245 | BOOST_TEST( Y::instances == 1 ); |
246 | BOOST_TEST( p.get() == 0 ); |
247 | |
248 | p2.reset(); |
249 | BOOST_TEST( Y::instances == 0 ); |
250 | |
251 | p2 = std::unique_ptr<Y, YD const&>( new Y, yd ); |
252 | BOOST_TEST( Y::instances == 1 ); |
253 | |
254 | p2 = std::unique_ptr<Y, YD const&>( new Y, yd ); |
255 | BOOST_TEST( Y::instances == 1 ); |
256 | |
257 | p2.reset(); |
258 | BOOST_TEST( Y::instances == 0 ); |
259 | } |
260 | |
261 | { |
262 | test_null_unique_ptr<X>( p1: std::unique_ptr<X>(), p2: std::unique_ptr<X>() ); |
263 | test_null_unique_ptr<X const>( p1: std::unique_ptr<X>(), p2: std::unique_ptr<X>() ); |
264 | test_null_unique_ptr<void>( p1: std::unique_ptr<X>(), p2: std::unique_ptr<X>() ); |
265 | test_null_unique_ptr<void const>( p1: std::unique_ptr<X>(), p2: std::unique_ptr<X>() ); |
266 | } |
267 | |
268 | { |
269 | test_null_unique_ptr<Y>( p1: std::unique_ptr<Y, YD>( 0, YD() ), p2: std::unique_ptr<Y, YD>( 0, YD() ) ); |
270 | test_null_unique_ptr<Y const>( p1: std::unique_ptr<Y, YD>( 0, YD() ), p2: std::unique_ptr<Y, YD>( 0, YD() ) ); |
271 | test_null_unique_ptr<void>( p1: std::unique_ptr<Y, YD>( 0, YD() ), p2: std::unique_ptr<Y, YD>( 0, YD() ) ); |
272 | test_null_unique_ptr<void const>( p1: std::unique_ptr<Y, YD>( 0, YD() ), p2: std::unique_ptr<Y, YD>( 0, YD() ) ); |
273 | } |
274 | |
275 | { |
276 | YD yd; |
277 | |
278 | test_null_unique_ptr<Y>( p1: std::unique_ptr<Y, YD&>( 0, yd ), p2: std::unique_ptr<Y, YD&>( 0, yd ) ); |
279 | test_null_unique_ptr<Y const>( p1: std::unique_ptr<Y, YD&>( 0, yd ), p2: std::unique_ptr<Y, YD&>( 0, yd ) ); |
280 | test_null_unique_ptr<void>( p1: std::unique_ptr<Y, YD&>( 0, yd ), p2: std::unique_ptr<Y, YD&>( 0, yd ) ); |
281 | test_null_unique_ptr<void const>( p1: std::unique_ptr<Y, YD&>( 0, yd ), p2: std::unique_ptr<Y, YD&>( 0, yd ) ); |
282 | } |
283 | |
284 | return boost::report_errors(); |
285 | } |
286 | |
287 | #else // !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
288 | |
289 | int main() |
290 | { |
291 | return 0; |
292 | } |
293 | |
294 | #endif |
295 | |