1 | // |
---|---|
2 | // sp_array_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/weak_ptr.hpp> |
13 | #include <boost/enable_shared_from_this.hpp> |
14 | #include <boost/core/lightweight_test.hpp> |
15 | #include <memory> |
16 | #include <utility> |
17 | |
18 | class X: public boost::enable_shared_from_this< X > |
19 | { |
20 | public: |
21 | |
22 | static int allocations; |
23 | static int instances; |
24 | |
25 | X() |
26 | { |
27 | ++instances; |
28 | } |
29 | |
30 | ~X() |
31 | { |
32 | --instances; |
33 | } |
34 | |
35 | void* operator new[]( std::size_t n ) |
36 | { |
37 | ++allocations; |
38 | return ::operator new[]( n ); |
39 | } |
40 | |
41 | void operator delete[]( void* p ) |
42 | { |
43 | --allocations; |
44 | ::operator delete[]( p ); |
45 | } |
46 | |
47 | private: |
48 | |
49 | X( X const& ); |
50 | X& operator=( X const& ); |
51 | }; |
52 | |
53 | int X::allocations = 0; |
54 | int X::instances = 0; |
55 | |
56 | template< class T> class array_deleter |
57 | { |
58 | public: |
59 | |
60 | static int calls; |
61 | |
62 | void operator()( T * p ) const |
63 | { |
64 | ++calls; |
65 | delete[] p; |
66 | } |
67 | |
68 | private: |
69 | |
70 | template< class Y > void operator()( Y * p ) const; |
71 | }; |
72 | |
73 | template< class T > int array_deleter< T >::calls = 0; |
74 | |
75 | int main() |
76 | { |
77 | BOOST_TEST( X::allocations == 0 ); |
78 | BOOST_TEST( X::instances == 0 ); |
79 | |
80 | { |
81 | boost::shared_ptr<X[]> px; |
82 | BOOST_TEST( !px ); |
83 | |
84 | BOOST_TEST( X::allocations == 0 ); |
85 | BOOST_TEST( X::instances == 0 ); |
86 | |
87 | boost::shared_ptr<X[]> px2( new X[ 3 ] ); |
88 | BOOST_TEST( px2 ); |
89 | |
90 | try |
91 | { |
92 | px2[0].shared_from_this(); |
93 | BOOST_ERROR( "px2[0].shared_from_this() failed to throw"); |
94 | } |
95 | catch( boost::bad_weak_ptr const& ) |
96 | { |
97 | } |
98 | catch( ... ) |
99 | { |
100 | BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr"); |
101 | } |
102 | |
103 | BOOST_TEST( X::allocations == 1 ); |
104 | BOOST_TEST( X::instances == 3 ); |
105 | |
106 | { |
107 | X & rx = px2[ 0 ]; |
108 | BOOST_TEST( &rx == px2.get() ); |
109 | } |
110 | |
111 | boost::shared_ptr<X const[]> px3( px2 ); |
112 | BOOST_TEST( px3 == px2 ); |
113 | BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) ); |
114 | |
115 | { |
116 | X const & rx = px3[ 1 ]; |
117 | BOOST_TEST( &rx == px3.get() + 1 ); |
118 | } |
119 | |
120 | px3.reset(); |
121 | px3 = px2; |
122 | BOOST_TEST( px3 == px2 ); |
123 | BOOST_TEST( !( px2 < px3 ) && !( px3 < px2 ) ); |
124 | |
125 | boost::shared_ptr<X volatile[]> px4( px2 ); |
126 | BOOST_TEST( px4 == px2 ); |
127 | BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) ); |
128 | |
129 | { |
130 | X volatile & rx = px4[ 2 ]; |
131 | BOOST_TEST( &rx == px4.get() + 2 ); |
132 | } |
133 | |
134 | px4.reset(); |
135 | px4 = px2; |
136 | BOOST_TEST( px4 == px2 ); |
137 | BOOST_TEST( !( px2 < px4 ) && !( px4 < px2 ) ); |
138 | |
139 | boost::shared_ptr<void> px5( px2 ); |
140 | BOOST_TEST( px5 == px2 ); |
141 | BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) ); |
142 | |
143 | px5.reset(); |
144 | px5 = px2; |
145 | BOOST_TEST( px5 == px2 ); |
146 | BOOST_TEST( !( px2 < px5 ) && !( px5 < px2 ) ); |
147 | |
148 | boost::weak_ptr<X[]> wp( px ); |
149 | BOOST_TEST( wp.lock() == px ); |
150 | |
151 | boost::weak_ptr<X[]> wp2( px2 ); |
152 | BOOST_TEST( wp2.lock() == px2 ); |
153 | |
154 | wp2.reset(); |
155 | wp2 = px2; |
156 | BOOST_TEST( wp2.lock() == px2 ); |
157 | |
158 | boost::weak_ptr<X const[]> wp3( px2 ); |
159 | BOOST_TEST( wp3.lock() == px2 ); |
160 | |
161 | wp3.reset(); |
162 | wp3 = px2; |
163 | BOOST_TEST( wp3.lock() == px2 ); |
164 | |
165 | boost::weak_ptr<X volatile[]> wp4( px2 ); |
166 | BOOST_TEST( wp4.lock() == px2 ); |
167 | |
168 | wp4.reset(); |
169 | wp4 = px2; |
170 | BOOST_TEST( wp4.lock() == px2 ); |
171 | |
172 | boost::weak_ptr<void> wp5( px2 ); |
173 | BOOST_TEST( wp5.lock() == px2 ); |
174 | |
175 | wp5.reset(); |
176 | wp5 = px2; |
177 | BOOST_TEST( wp5.lock() == px2 ); |
178 | |
179 | px2.reset(); |
180 | |
181 | BOOST_TEST( X::allocations == 1 ); |
182 | BOOST_TEST( X::instances == 3 ); |
183 | |
184 | px3.reset(); |
185 | px4.reset(); |
186 | px5.reset(); |
187 | |
188 | BOOST_TEST( X::allocations == 0 ); |
189 | BOOST_TEST( X::instances == 0 ); |
190 | |
191 | BOOST_TEST( wp2.lock() == 0 ); |
192 | BOOST_TEST( wp3.lock() == 0 ); |
193 | BOOST_TEST( wp4.lock() == 0 ); |
194 | BOOST_TEST( wp5.lock() == 0 ); |
195 | } |
196 | |
197 | #if !defined( BOOST_NO_CXX11_SMART_PTR ) && !defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
198 | |
199 | { |
200 | std::unique_ptr<X[]> px( new X[ 4 ] ); |
201 | BOOST_TEST( X::allocations == 1 ); |
202 | BOOST_TEST( X::instances == 4 ); |
203 | |
204 | boost::shared_ptr<X[]> px2( std::move( px ) ); |
205 | BOOST_TEST( X::allocations == 1 ); |
206 | BOOST_TEST( X::instances == 4 ); |
207 | BOOST_TEST( px.get() == 0 ); |
208 | |
209 | try |
210 | { |
211 | px2[0].shared_from_this(); |
212 | BOOST_ERROR( "px2[0].shared_from_this() failed to throw"); |
213 | } |
214 | catch( boost::bad_weak_ptr const& ) |
215 | { |
216 | } |
217 | catch( ... ) |
218 | { |
219 | BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr"); |
220 | } |
221 | |
222 | px2.reset(); |
223 | |
224 | BOOST_TEST( X::allocations == 0 ); |
225 | BOOST_TEST( X::instances == 0 ); |
226 | } |
227 | |
228 | { |
229 | std::unique_ptr<X[]> px( new X[ 4 ] ); |
230 | BOOST_TEST( X::allocations == 1 ); |
231 | BOOST_TEST( X::instances == 4 ); |
232 | |
233 | boost::shared_ptr<X[]> px2; |
234 | px2 = std::move( px ); |
235 | BOOST_TEST( X::allocations == 1 ); |
236 | BOOST_TEST( X::instances == 4 ); |
237 | BOOST_TEST( px.get() == 0 ); |
238 | |
239 | try |
240 | { |
241 | px2[0].shared_from_this(); |
242 | BOOST_ERROR( "px2[0].shared_from_this() failed to throw"); |
243 | } |
244 | catch( boost::bad_weak_ptr const& ) |
245 | { |
246 | } |
247 | catch( ... ) |
248 | { |
249 | BOOST_ERROR( "px2[0].shared_from_this() threw something else than bad_weak_ptr"); |
250 | } |
251 | |
252 | px2.reset(); |
253 | |
254 | BOOST_TEST( X::allocations == 0 ); |
255 | BOOST_TEST( X::instances == 0 ); |
256 | } |
257 | |
258 | #endif |
259 | |
260 | { |
261 | boost::shared_ptr<X[]> px( new X[ 5 ], array_deleter< X >() ); |
262 | BOOST_TEST( X::allocations == 1 ); |
263 | BOOST_TEST( X::instances == 5 ); |
264 | |
265 | try |
266 | { |
267 | px[0].shared_from_this(); |
268 | BOOST_ERROR( "px[0].shared_from_this() failed to throw"); |
269 | } |
270 | catch( boost::bad_weak_ptr const& ) |
271 | { |
272 | } |
273 | catch( ... ) |
274 | { |
275 | BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr"); |
276 | } |
277 | |
278 | px.reset(); |
279 | |
280 | BOOST_TEST( X::allocations == 0 ); |
281 | BOOST_TEST( X::instances == 0 ); |
282 | BOOST_TEST( array_deleter< X >::calls == 1 ); |
283 | } |
284 | |
285 | { |
286 | boost::shared_ptr<X[]> px( new X[ 6 ], array_deleter< X >(), std::allocator< X >() ); |
287 | BOOST_TEST( X::allocations == 1 ); |
288 | BOOST_TEST( X::instances == 6 ); |
289 | |
290 | try |
291 | { |
292 | px[0].shared_from_this(); |
293 | BOOST_ERROR( "px[0].shared_from_this() failed to throw"); |
294 | } |
295 | catch( boost::bad_weak_ptr const& ) |
296 | { |
297 | } |
298 | catch( ... ) |
299 | { |
300 | BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr"); |
301 | } |
302 | |
303 | px.reset(); |
304 | |
305 | BOOST_TEST( X::allocations == 0 ); |
306 | BOOST_TEST( X::instances == 0 ); |
307 | BOOST_TEST( array_deleter< X >::calls == 2 ); |
308 | } |
309 | |
310 | return boost::report_errors(); |
311 | } |
312 |