1 | // allocate_shared_alloc11_test.cpp |
2 | // |
3 | // allocate_shared with a minimal C++11 allocator |
4 | // |
5 | // Copyright 2007-2009, 2014 Peter Dimov |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. |
8 | // See accompanying file LICENSE_1_0.txt or copy at |
9 | // http://www.boost.org/LICENSE_1_0.txt |
10 | |
11 | #include <boost/core/lightweight_test.hpp> |
12 | #include <boost/make_shared.hpp> |
13 | #include <boost/shared_ptr.hpp> |
14 | #include <boost/weak_ptr.hpp> |
15 | #include <boost/config.hpp> |
16 | #include <cstddef> |
17 | |
18 | #if !defined( BOOST_NO_CXX11_ALLOCATOR ) |
19 | |
20 | template< class T > class cxx11_allocator |
21 | { |
22 | public: |
23 | |
24 | typedef T value_type; |
25 | |
26 | cxx11_allocator() |
27 | { |
28 | } |
29 | |
30 | template< class Y > cxx11_allocator( cxx11_allocator<Y> const & ) |
31 | { |
32 | } |
33 | |
34 | T * allocate( std::size_t n ) |
35 | { |
36 | return static_cast< T* >( ::operator new( n * sizeof( T ) ) ); |
37 | } |
38 | |
39 | void deallocate( T * p, std::size_t n ) |
40 | { |
41 | ::operator delete( p ); |
42 | } |
43 | }; |
44 | |
45 | class X |
46 | { |
47 | private: |
48 | |
49 | X( X const & ); |
50 | X & operator=( X const & ); |
51 | |
52 | void * operator new( std::size_t n ) |
53 | { |
54 | BOOST_ERROR( "private X::new called" ); |
55 | return ::operator new( n ); |
56 | } |
57 | |
58 | void operator delete( void * p ) |
59 | { |
60 | BOOST_ERROR( "private X::delete called" ); |
61 | ::operator delete( p ); |
62 | } |
63 | |
64 | public: |
65 | |
66 | static int instances; |
67 | |
68 | int v; |
69 | |
70 | explicit X( int a1 = 0, int a2 = 0, int a3 = 0, int a4 = 0, int a5 = 0, int a6 = 0, int a7 = 0, int a8 = 0, int a9 = 0 ): v( a1+a2+a3+a4+a5+a6+a7+a8+a9 ) |
71 | { |
72 | ++instances; |
73 | } |
74 | |
75 | ~X() |
76 | { |
77 | --instances; |
78 | } |
79 | }; |
80 | |
81 | int X::instances = 0; |
82 | |
83 | int main() |
84 | { |
85 | { |
86 | boost::shared_ptr< int > pi = boost::allocate_shared< int >( a: cxx11_allocator<int>() ); |
87 | |
88 | BOOST_TEST( pi.get() != 0 ); |
89 | BOOST_TEST( *pi == 0 ); |
90 | } |
91 | |
92 | { |
93 | boost::shared_ptr< int > pi = boost::allocate_shared< int >( a: cxx11_allocator<int>(), args: 5 ); |
94 | |
95 | BOOST_TEST( pi.get() != 0 ); |
96 | BOOST_TEST( *pi == 5 ); |
97 | } |
98 | |
99 | BOOST_TEST( X::instances == 0 ); |
100 | |
101 | { |
102 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>() ); |
103 | boost::weak_ptr<X> wp( pi ); |
104 | |
105 | BOOST_TEST( X::instances == 1 ); |
106 | BOOST_TEST( pi.get() != 0 ); |
107 | BOOST_TEST( pi->v == 0 ); |
108 | |
109 | pi.reset(); |
110 | |
111 | BOOST_TEST( X::instances == 0 ); |
112 | } |
113 | |
114 | { |
115 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1 ); |
116 | boost::weak_ptr<X> wp( pi ); |
117 | |
118 | BOOST_TEST( X::instances == 1 ); |
119 | BOOST_TEST( pi.get() != 0 ); |
120 | BOOST_TEST( pi->v == 1 ); |
121 | |
122 | pi.reset(); |
123 | |
124 | BOOST_TEST( X::instances == 0 ); |
125 | } |
126 | |
127 | { |
128 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2 ); |
129 | boost::weak_ptr<X> wp( pi ); |
130 | |
131 | BOOST_TEST( X::instances == 1 ); |
132 | BOOST_TEST( pi.get() != 0 ); |
133 | BOOST_TEST( pi->v == 1+2 ); |
134 | |
135 | pi.reset(); |
136 | |
137 | BOOST_TEST( X::instances == 0 ); |
138 | } |
139 | |
140 | { |
141 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3 ); |
142 | boost::weak_ptr<X> wp( pi ); |
143 | |
144 | BOOST_TEST( X::instances == 1 ); |
145 | BOOST_TEST( pi.get() != 0 ); |
146 | BOOST_TEST( pi->v == 1+2+3 ); |
147 | |
148 | pi.reset(); |
149 | |
150 | BOOST_TEST( X::instances == 0 ); |
151 | } |
152 | |
153 | { |
154 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4 ); |
155 | boost::weak_ptr<X> wp( pi ); |
156 | |
157 | BOOST_TEST( X::instances == 1 ); |
158 | BOOST_TEST( pi.get() != 0 ); |
159 | BOOST_TEST( pi->v == 1+2+3+4 ); |
160 | |
161 | pi.reset(); |
162 | |
163 | BOOST_TEST( X::instances == 0 ); |
164 | } |
165 | |
166 | { |
167 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4, args: 5 ); |
168 | boost::weak_ptr<X> wp( pi ); |
169 | |
170 | BOOST_TEST( X::instances == 1 ); |
171 | BOOST_TEST( pi.get() != 0 ); |
172 | BOOST_TEST( pi->v == 1+2+3+4+5 ); |
173 | |
174 | pi.reset(); |
175 | |
176 | BOOST_TEST( X::instances == 0 ); |
177 | } |
178 | |
179 | { |
180 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4, args: 5, args: 6 ); |
181 | boost::weak_ptr<X> wp( pi ); |
182 | |
183 | BOOST_TEST( X::instances == 1 ); |
184 | BOOST_TEST( pi.get() != 0 ); |
185 | BOOST_TEST( pi->v == 1+2+3+4+5+6 ); |
186 | |
187 | pi.reset(); |
188 | |
189 | BOOST_TEST( X::instances == 0 ); |
190 | } |
191 | |
192 | { |
193 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4, args: 5, args: 6, args: 7 ); |
194 | boost::weak_ptr<X> wp( pi ); |
195 | |
196 | BOOST_TEST( X::instances == 1 ); |
197 | BOOST_TEST( pi.get() != 0 ); |
198 | BOOST_TEST( pi->v == 1+2+3+4+5+6+7 ); |
199 | |
200 | pi.reset(); |
201 | |
202 | BOOST_TEST( X::instances == 0 ); |
203 | } |
204 | |
205 | { |
206 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4, args: 5, args: 6, args: 7, args: 8 ); |
207 | boost::weak_ptr<X> wp( pi ); |
208 | |
209 | BOOST_TEST( X::instances == 1 ); |
210 | BOOST_TEST( pi.get() != 0 ); |
211 | BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8 ); |
212 | |
213 | pi.reset(); |
214 | |
215 | BOOST_TEST( X::instances == 0 ); |
216 | } |
217 | |
218 | { |
219 | boost::shared_ptr< X > pi = boost::allocate_shared< X >( a: cxx11_allocator<void>(), args: 1, args: 2, args: 3, args: 4, args: 5, args: 6, args: 7, args: 8, args: 9 ); |
220 | boost::weak_ptr<X> wp( pi ); |
221 | |
222 | BOOST_TEST( X::instances == 1 ); |
223 | BOOST_TEST( pi.get() != 0 ); |
224 | BOOST_TEST( pi->v == 1+2+3+4+5+6+7+8+9 ); |
225 | |
226 | pi.reset(); |
227 | |
228 | BOOST_TEST( X::instances == 0 ); |
229 | } |
230 | |
231 | return boost::report_errors(); |
232 | } |
233 | |
234 | #else // !defined( BOOST_NO_CXX11_ALLOCATOR ) |
235 | |
236 | int main() |
237 | { |
238 | return 0; |
239 | } |
240 | |
241 | #endif |
242 | |