1 | // |
---|---|
2 | // sp_array_n_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[3]> px; |
82 | BOOST_TEST( !px ); |
83 | |
84 | BOOST_TEST( X::allocations == 0 ); |
85 | BOOST_TEST( X::instances == 0 ); |
86 | |
87 | boost::shared_ptr<X[3]> 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[3]> 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[3]> 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[3]> wp( px ); |
149 | BOOST_TEST( wp.lock() == px ); |
150 | |
151 | boost::weak_ptr<X[3]> 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[3]> 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[3]> 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 | { |
198 | boost::shared_ptr<X[5]> px( new X[ 5 ], array_deleter< X >() ); |
199 | BOOST_TEST( X::allocations == 1 ); |
200 | BOOST_TEST( X::instances == 5 ); |
201 | |
202 | try |
203 | { |
204 | px[0].shared_from_this(); |
205 | BOOST_ERROR( "px[0].shared_from_this() failed to throw"); |
206 | } |
207 | catch( boost::bad_weak_ptr const& ) |
208 | { |
209 | } |
210 | catch( ... ) |
211 | { |
212 | BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr"); |
213 | } |
214 | |
215 | px.reset(); |
216 | |
217 | BOOST_TEST( X::allocations == 0 ); |
218 | BOOST_TEST( X::instances == 0 ); |
219 | BOOST_TEST( array_deleter< X >::calls == 1 ); |
220 | } |
221 | |
222 | { |
223 | boost::shared_ptr<X[6]> px( new X[ 6 ], array_deleter< X >(), std::allocator< X >() ); |
224 | BOOST_TEST( X::allocations == 1 ); |
225 | BOOST_TEST( X::instances == 6 ); |
226 | |
227 | try |
228 | { |
229 | px[0].shared_from_this(); |
230 | BOOST_ERROR( "px[0].shared_from_this() failed to throw"); |
231 | } |
232 | catch( boost::bad_weak_ptr const& ) |
233 | { |
234 | } |
235 | catch( ... ) |
236 | { |
237 | BOOST_ERROR( "px[0].shared_from_this() threw something else than bad_weak_ptr"); |
238 | } |
239 | |
240 | px.reset(); |
241 | |
242 | BOOST_TEST( X::allocations == 0 ); |
243 | BOOST_TEST( X::instances == 0 ); |
244 | BOOST_TEST( array_deleter< X >::calls == 2 ); |
245 | } |
246 | |
247 | return boost::report_errors(); |
248 | } |
249 |