1 | // |
2 | // sp_bml_unique_ptr_test.cpp |
3 | // |
4 | // Copyright (c) 2012, 2015 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/move/unique_ptr.hpp> |
15 | #include <boost/type_traits/remove_reference.hpp> |
16 | #include <memory> |
17 | #include <utility> |
18 | |
19 | struct X: public boost::enable_shared_from_this< X > |
20 | { |
21 | static int instances; |
22 | |
23 | X() |
24 | { |
25 | ++instances; |
26 | } |
27 | |
28 | ~X() |
29 | { |
30 | --instances; |
31 | } |
32 | |
33 | private: |
34 | |
35 | X( X const & ); |
36 | X & operator=( X const & ); |
37 | }; |
38 | |
39 | int X::instances = 0; |
40 | |
41 | struct Y |
42 | { |
43 | static int instances; |
44 | |
45 | bool deleted_; |
46 | |
47 | Y(): deleted_( false ) |
48 | { |
49 | ++instances; |
50 | } |
51 | |
52 | ~Y() |
53 | { |
54 | BOOST_TEST( deleted_ ); |
55 | --instances; |
56 | } |
57 | |
58 | private: |
59 | |
60 | Y( Y const & ); |
61 | Y & operator=( Y const & ); |
62 | }; |
63 | |
64 | int Y::instances = 0; |
65 | |
66 | struct YD |
67 | { |
68 | void operator()( Y* p ) const |
69 | { |
70 | if( p ) |
71 | { |
72 | p->deleted_ = true; |
73 | delete p; |
74 | } |
75 | else |
76 | { |
77 | BOOST_ERROR( "YD::operator()(0) called" ); |
78 | } |
79 | } |
80 | }; |
81 | |
82 | template<class U, class T, class D> static void test_null_unique_ptr( boost::movelib::unique_ptr<T, D> p1, boost::movelib::unique_ptr<T, D> p2 ) |
83 | { |
84 | BOOST_TEST( T::instances == 0 ); |
85 | |
86 | boost::shared_ptr<U> sp( boost::move( p1 ) ); |
87 | |
88 | BOOST_TEST( sp.get() == 0 ); |
89 | BOOST_TEST( sp.use_count() == 0 ); |
90 | |
91 | sp.reset( new T, typename boost::remove_reference<D>::type() ); |
92 | |
93 | BOOST_TEST( sp.get() != 0 ); |
94 | BOOST_TEST( sp.use_count() == 1 ); |
95 | |
96 | BOOST_TEST( T::instances == 1 ); |
97 | |
98 | sp = boost::move( p2 ); |
99 | |
100 | BOOST_TEST( sp.get() == 0 ); |
101 | BOOST_TEST( sp.use_count() == 0 ); |
102 | |
103 | BOOST_TEST( T::instances == 0 ); |
104 | } |
105 | |
106 | int main() |
107 | { |
108 | { |
109 | BOOST_TEST( X::instances == 0 ); |
110 | |
111 | boost::movelib::unique_ptr<X> p( new X ); |
112 | BOOST_TEST( X::instances == 1 ); |
113 | |
114 | boost::shared_ptr<X> p2( boost::move( t&: p ) ); |
115 | BOOST_TEST( X::instances == 1 ); |
116 | BOOST_TEST( p.get() == 0 ); |
117 | |
118 | boost::shared_ptr<X> p3 = p2->shared_from_this(); |
119 | BOOST_TEST( p2 == p3 ); |
120 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
121 | |
122 | p2.reset(); |
123 | p3.reset(); |
124 | BOOST_TEST( X::instances == 0 ); |
125 | |
126 | p2 = boost::movelib::unique_ptr<X>( new X ); |
127 | BOOST_TEST( X::instances == 1 ); |
128 | |
129 | p2 = boost::movelib::unique_ptr<X>( new X ); |
130 | BOOST_TEST( X::instances == 1 ); |
131 | |
132 | p3 = p2->shared_from_this(); |
133 | BOOST_TEST( p2 == p3 ); |
134 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
135 | |
136 | p2.reset(); |
137 | p3.reset(); |
138 | BOOST_TEST( X::instances == 0 ); |
139 | } |
140 | |
141 | { |
142 | BOOST_TEST( X::instances == 0 ); |
143 | |
144 | boost::movelib::unique_ptr<X> p( new X ); |
145 | BOOST_TEST( X::instances == 1 ); |
146 | |
147 | boost::shared_ptr<X const> p2( boost::move( t&: p ) ); |
148 | BOOST_TEST( X::instances == 1 ); |
149 | BOOST_TEST( p.get() == 0 ); |
150 | |
151 | boost::shared_ptr<X const> p3 = p2->shared_from_this(); |
152 | BOOST_TEST( p2 == p3 ); |
153 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
154 | |
155 | p2.reset(); |
156 | p3.reset(); |
157 | BOOST_TEST( X::instances == 0 ); |
158 | |
159 | p2 = boost::movelib::unique_ptr<X>( new X ); |
160 | BOOST_TEST( X::instances == 1 ); |
161 | |
162 | p2 = boost::movelib::unique_ptr<X>( new X ); |
163 | BOOST_TEST( X::instances == 1 ); |
164 | |
165 | p3 = p2->shared_from_this(); |
166 | BOOST_TEST( p2 == p3 ); |
167 | BOOST_TEST( !(p2 < p3) && !(p3 < p2) ); |
168 | |
169 | p2.reset(); |
170 | p3.reset(); |
171 | BOOST_TEST( X::instances == 0 ); |
172 | } |
173 | |
174 | { |
175 | BOOST_TEST( X::instances == 0 ); |
176 | |
177 | boost::movelib::unique_ptr<X> p( new X ); |
178 | BOOST_TEST( X::instances == 1 ); |
179 | |
180 | boost::shared_ptr<void> p2( boost::move( t&: p ) ); |
181 | BOOST_TEST( X::instances == 1 ); |
182 | BOOST_TEST( p.get() == 0 ); |
183 | |
184 | p2.reset(); |
185 | BOOST_TEST( X::instances == 0 ); |
186 | |
187 | p2 = boost::movelib::unique_ptr<X>( new X ); |
188 | BOOST_TEST( X::instances == 1 ); |
189 | |
190 | p2 = boost::movelib::unique_ptr<X>( new X ); |
191 | BOOST_TEST( X::instances == 1 ); |
192 | |
193 | p2.reset(); |
194 | BOOST_TEST( X::instances == 0 ); |
195 | } |
196 | |
197 | { |
198 | BOOST_TEST( Y::instances == 0 ); |
199 | |
200 | boost::movelib::unique_ptr<Y, YD> p( new Y, YD() ); |
201 | BOOST_TEST( Y::instances == 1 ); |
202 | |
203 | boost::shared_ptr<Y> p2( boost::move( t&: p ) ); |
204 | BOOST_TEST( Y::instances == 1 ); |
205 | BOOST_TEST( p.get() == 0 ); |
206 | |
207 | p2.reset(); |
208 | BOOST_TEST( Y::instances == 0 ); |
209 | |
210 | p2 = boost::movelib::unique_ptr<Y, YD>( new Y, YD() ); |
211 | BOOST_TEST( Y::instances == 1 ); |
212 | |
213 | p2 = boost::movelib::unique_ptr<Y, YD>( new Y, YD() ); |
214 | BOOST_TEST( Y::instances == 1 ); |
215 | |
216 | p2.reset(); |
217 | BOOST_TEST( Y::instances == 0 ); |
218 | } |
219 | |
220 | { |
221 | BOOST_TEST( Y::instances == 0 ); |
222 | |
223 | YD yd; |
224 | |
225 | boost::movelib::unique_ptr<Y, YD&> p( new Y, yd ); |
226 | BOOST_TEST( Y::instances == 1 ); |
227 | |
228 | boost::shared_ptr<Y> p2( boost::move( t&: p ) ); |
229 | BOOST_TEST( Y::instances == 1 ); |
230 | BOOST_TEST( p.get() == 0 ); |
231 | |
232 | p2.reset(); |
233 | BOOST_TEST( Y::instances == 0 ); |
234 | |
235 | p2 = boost::movelib::unique_ptr<Y, YD&>( new Y, yd ); |
236 | BOOST_TEST( Y::instances == 1 ); |
237 | |
238 | p2 = boost::movelib::unique_ptr<Y, YD&>( new Y, yd ); |
239 | BOOST_TEST( Y::instances == 1 ); |
240 | |
241 | p2.reset(); |
242 | BOOST_TEST( Y::instances == 0 ); |
243 | } |
244 | |
245 | { |
246 | BOOST_TEST( Y::instances == 0 ); |
247 | |
248 | YD yd; |
249 | |
250 | boost::movelib::unique_ptr<Y, YD const&> p( new Y, yd ); |
251 | BOOST_TEST( Y::instances == 1 ); |
252 | |
253 | boost::shared_ptr<Y> p2( boost::move( t&: p ) ); |
254 | BOOST_TEST( Y::instances == 1 ); |
255 | BOOST_TEST( p.get() == 0 ); |
256 | |
257 | p2.reset(); |
258 | BOOST_TEST( Y::instances == 0 ); |
259 | |
260 | p2 = boost::movelib::unique_ptr<Y, YD const&>( new Y, yd ); |
261 | BOOST_TEST( Y::instances == 1 ); |
262 | |
263 | p2 = boost::movelib::unique_ptr<Y, YD const&>( new Y, yd ); |
264 | BOOST_TEST( Y::instances == 1 ); |
265 | |
266 | p2.reset(); |
267 | BOOST_TEST( Y::instances == 0 ); |
268 | } |
269 | |
270 | { |
271 | test_null_unique_ptr<X>( p1: boost::movelib::unique_ptr<X>(), p2: boost::movelib::unique_ptr<X>() ); |
272 | test_null_unique_ptr<X const>( p1: boost::movelib::unique_ptr<X>(), p2: boost::movelib::unique_ptr<X>() ); |
273 | test_null_unique_ptr<void>( p1: boost::movelib::unique_ptr<X>(), p2: boost::movelib::unique_ptr<X>() ); |
274 | test_null_unique_ptr<void const>( p1: boost::movelib::unique_ptr<X>(), p2: boost::movelib::unique_ptr<X>() ); |
275 | } |
276 | |
277 | { |
278 | test_null_unique_ptr<Y>( p1: boost::movelib::unique_ptr<Y, YD>( 0, YD() ), p2: boost::movelib::unique_ptr<Y, YD>( 0, YD() ) ); |
279 | test_null_unique_ptr<Y const>( p1: boost::movelib::unique_ptr<Y, YD>( 0, YD() ), p2: boost::movelib::unique_ptr<Y, YD>( 0, YD() ) ); |
280 | test_null_unique_ptr<void>( p1: boost::movelib::unique_ptr<Y, YD>( 0, YD() ), p2: boost::movelib::unique_ptr<Y, YD>( 0, YD() ) ); |
281 | test_null_unique_ptr<void const>( p1: boost::movelib::unique_ptr<Y, YD>( 0, YD() ), p2: boost::movelib::unique_ptr<Y, YD>( 0, YD() ) ); |
282 | } |
283 | |
284 | { |
285 | YD yd; |
286 | |
287 | test_null_unique_ptr<Y>( p1: boost::movelib::unique_ptr<Y, YD&>( 0, yd ), p2: boost::movelib::unique_ptr<Y, YD&>( 0, yd ) ); |
288 | test_null_unique_ptr<Y const>( p1: boost::movelib::unique_ptr<Y, YD&>( 0, yd ), p2: boost::movelib::unique_ptr<Y, YD&>( 0, yd ) ); |
289 | test_null_unique_ptr<void>( p1: boost::movelib::unique_ptr<Y, YD&>( 0, yd ), p2: boost::movelib::unique_ptr<Y, YD&>( 0, yd ) ); |
290 | test_null_unique_ptr<void const>( p1: boost::movelib::unique_ptr<Y, YD&>( 0, yd ), p2: boost::movelib::unique_ptr<Y, YD&>( 0, yd ) ); |
291 | } |
292 | |
293 | return boost::report_errors(); |
294 | } |
295 | |