1 | /* |
2 | Copyright 2019 Glen Joseph Fernandes |
3 | (glenjofe@gmail.com) |
4 | |
5 | Distributed under the Boost Software License, Version 1.0. |
6 | (http://www.boost.org/LICENSE_1_0.txt) |
7 | */ |
8 | #include <boost/config.hpp> |
9 | #if (!defined(BOOST_LIBSTDCXX_VERSION) || \ |
10 | BOOST_LIBSTDCXX_VERSION >= 48000) && \ |
11 | !defined(BOOST_NO_CXX11_SMART_PTR) && \ |
12 | !defined(BOOST_NO_CXX11_ALLOCATOR) |
13 | #include <boost/smart_ptr/allocate_unique.hpp> |
14 | #include <boost/core/lightweight_test.hpp> |
15 | |
16 | struct allow { }; |
17 | |
18 | template<class T = void> |
19 | struct creator { |
20 | typedef T value_type; |
21 | |
22 | template<class U> |
23 | struct rebind { |
24 | typedef creator<U> other; |
25 | }; |
26 | |
27 | creator() { } |
28 | |
29 | template<class U> |
30 | creator(const creator<U>&) { } |
31 | |
32 | T* allocate(std::size_t size) { |
33 | return static_cast<T*>(::operator new(sizeof(T) * size)); |
34 | } |
35 | |
36 | void deallocate(T* ptr, std::size_t) { |
37 | ::operator delete(ptr); |
38 | } |
39 | |
40 | template<class U> |
41 | void construct(U* ptr) { |
42 | ::new(static_cast<void*>(ptr)) U(allow()); |
43 | } |
44 | |
45 | template<class U> |
46 | void destroy(U* ptr) { |
47 | ptr->~U(); |
48 | } |
49 | |
50 | }; |
51 | |
52 | template<class T, class U> |
53 | inline bool |
54 | operator==(const creator<T>&, const creator<U>&) |
55 | { |
56 | return true; |
57 | } |
58 | |
59 | template<class T, class U> |
60 | inline bool |
61 | operator!=(const creator<T>&, const creator<U>&) |
62 | { |
63 | return false; |
64 | } |
65 | |
66 | class type { |
67 | public: |
68 | static unsigned instances; |
69 | |
70 | explicit type(allow) { |
71 | ++instances; |
72 | } |
73 | |
74 | ~type() { |
75 | --instances; |
76 | } |
77 | |
78 | private: |
79 | type(const type&); |
80 | type& operator=(const type&); |
81 | }; |
82 | |
83 | unsigned type::instances = 0; |
84 | |
85 | int main() |
86 | { |
87 | { |
88 | std::unique_ptr<type[], |
89 | boost::alloc_deleter<type[], creator<type> > > result = |
90 | boost::allocate_unique<type[]>(alloc: creator<type>(), size: 3); |
91 | BOOST_TEST(result.get() != 0); |
92 | BOOST_TEST(type::instances == 3); |
93 | result.reset(); |
94 | BOOST_TEST(type::instances == 0); |
95 | } |
96 | { |
97 | std::unique_ptr<type[], |
98 | boost::alloc_deleter<type[3], creator<type> > > result = |
99 | boost::allocate_unique<type[3]>(alloc: creator<type>()); |
100 | BOOST_TEST(result.get() != 0); |
101 | BOOST_TEST(type::instances == 3); |
102 | result.reset(); |
103 | BOOST_TEST(type::instances == 0); |
104 | } |
105 | { |
106 | std::unique_ptr<type[][2], |
107 | boost::alloc_deleter<type[][2], creator<> > > result = |
108 | boost::allocate_unique<type[][2]>(alloc: creator<>(), size: 2); |
109 | BOOST_TEST(result.get() != 0); |
110 | BOOST_TEST(type::instances == 4); |
111 | result.reset(); |
112 | BOOST_TEST(type::instances == 0); |
113 | } |
114 | { |
115 | std::unique_ptr<type[][2], |
116 | boost::alloc_deleter<type[2][2], creator<> > > result = |
117 | boost::allocate_unique<type[2][2]>(alloc: creator<>()); |
118 | BOOST_TEST(result.get() != 0); |
119 | BOOST_TEST(type::instances == 4); |
120 | result.reset(); |
121 | BOOST_TEST(type::instances == 0); |
122 | } |
123 | { |
124 | std::unique_ptr<const type[], |
125 | boost::alloc_deleter<const type[], creator<> > > result = |
126 | boost::allocate_unique<const type[]>(alloc: creator<>(), size: 3); |
127 | BOOST_TEST(result.get() != 0); |
128 | BOOST_TEST(type::instances == 3); |
129 | result.reset(); |
130 | BOOST_TEST(type::instances == 0); |
131 | } |
132 | { |
133 | std::unique_ptr<const type[], |
134 | boost::alloc_deleter<const type[3], creator<> > > result = |
135 | boost::allocate_unique<const type[3]>(alloc: creator<>()); |
136 | BOOST_TEST(result.get() != 0); |
137 | BOOST_TEST(type::instances == 3); |
138 | result.reset(); |
139 | BOOST_TEST(type::instances == 0); |
140 | } |
141 | { |
142 | std::unique_ptr<const type[][2], |
143 | boost::alloc_deleter<const type[][2], creator<> > > result = |
144 | boost::allocate_unique<const type[][2]>(alloc: creator<>(), size: 2); |
145 | BOOST_TEST(result.get() != 0); |
146 | BOOST_TEST(type::instances == 4); |
147 | result.reset(); |
148 | BOOST_TEST(type::instances == 0); |
149 | } |
150 | { |
151 | std::unique_ptr<const type[][2], |
152 | boost::alloc_deleter<const type[2][2], creator<> > > result = |
153 | boost::allocate_unique<const type[2][2]>(alloc: creator<>()); |
154 | BOOST_TEST(result.get() != 0); |
155 | BOOST_TEST(type::instances == 4); |
156 | result.reset(); |
157 | BOOST_TEST(type::instances == 0); |
158 | } |
159 | return boost::report_errors(); |
160 | } |
161 | #else |
162 | int main() |
163 | { |
164 | return 0; |
165 | } |
166 | #endif |
167 | |