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
XX23 X()
24 {
25 ++instances;
26 }
27
~XX28 ~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
YY47 Y(): deleted_( false )
48 {
49 ++instances;
50 }
51
~YY52 ~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 {
operator ()YD68 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
test_null_unique_ptr(boost::movelib::unique_ptr<T,D> p1,boost::movelib::unique_ptr<T,D> p2)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
main()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( 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( 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( 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( 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( 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( 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>( boost::movelib::unique_ptr<X>(), boost::movelib::unique_ptr<X>() );
272 test_null_unique_ptr<X const>( boost::movelib::unique_ptr<X>(), boost::movelib::unique_ptr<X>() );
273 test_null_unique_ptr<void>( boost::movelib::unique_ptr<X>(), boost::movelib::unique_ptr<X>() );
274 test_null_unique_ptr<void const>( boost::movelib::unique_ptr<X>(), boost::movelib::unique_ptr<X>() );
275 }
276
277 {
278 test_null_unique_ptr<Y>( boost::movelib::unique_ptr<Y, YD>( 0, YD() ), boost::movelib::unique_ptr<Y, YD>( 0, YD() ) );
279 test_null_unique_ptr<Y const>( boost::movelib::unique_ptr<Y, YD>( 0, YD() ), boost::movelib::unique_ptr<Y, YD>( 0, YD() ) );
280 test_null_unique_ptr<void>( boost::movelib::unique_ptr<Y, YD>( 0, YD() ), boost::movelib::unique_ptr<Y, YD>( 0, YD() ) );
281 test_null_unique_ptr<void const>( boost::movelib::unique_ptr<Y, YD>( 0, YD() ), boost::movelib::unique_ptr<Y, YD>( 0, YD() ) );
282 }
283
284 {
285 YD yd;
286
287 test_null_unique_ptr<Y>( boost::movelib::unique_ptr<Y, YD&>( 0, yd ), boost::movelib::unique_ptr<Y, YD&>( 0, yd ) );
288 test_null_unique_ptr<Y const>( boost::movelib::unique_ptr<Y, YD&>( 0, yd ), boost::movelib::unique_ptr<Y, YD&>( 0, yd ) );
289 test_null_unique_ptr<void>( boost::movelib::unique_ptr<Y, YD&>( 0, yd ), boost::movelib::unique_ptr<Y, YD&>( 0, yd ) );
290 test_null_unique_ptr<void const>( boost::movelib::unique_ptr<Y, YD&>( 0, yd ), boost::movelib::unique_ptr<Y, YD&>( 0, yd ) );
291 }
292
293 return boost::report_errors();
294 }
295