1 | // Copyright 2021 Peter Dimov |
---|---|
2 | // Distributed under the Boost Software License, Version 1.0. |
3 | // https://www.boost.org/LICENSE_1_0.txt |
4 | |
5 | #include <boost/shared_ptr.hpp> |
6 | #include <boost/core/lightweight_test.hpp> |
7 | #include <boost/config.hpp> |
8 | #include <boost/config/pragma_message.hpp> |
9 | #include <memory> |
10 | #include <utility> |
11 | |
12 | #if defined( BOOST_NO_CXX11_SMART_PTR ) |
13 | |
14 | BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_NO_CXX11_SMART_PTR is defined") |
15 | int main() {} |
16 | |
17 | #elif defined( BOOST_NO_CXX11_RVALUE_REFERENCES ) |
18 | |
19 | BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_NO_CXX11_RVALUE_REFERENCES is defined") |
20 | int main() {} |
21 | |
22 | #elif defined(BOOST_MSVC) && BOOST_MSVC < 1700 |
23 | |
24 | BOOST_PRAGMA_MESSAGE("Skipping test because msvc-10.0 unique_ptr doesn't support move-only deleters") |
25 | int main() {} |
26 | |
27 | #else |
28 | |
29 | struct Y |
30 | { |
31 | static int instances; |
32 | |
33 | bool deleted_; |
34 | |
35 | Y(): deleted_( false ) |
36 | { |
37 | ++instances; |
38 | } |
39 | |
40 | ~Y() |
41 | { |
42 | BOOST_TEST( deleted_ ); |
43 | --instances; |
44 | } |
45 | |
46 | private: |
47 | |
48 | Y( Y const & ); |
49 | Y & operator=( Y const & ); |
50 | }; |
51 | |
52 | int Y::instances = 0; |
53 | |
54 | struct YD |
55 | { |
56 | bool moved_; |
57 | |
58 | YD(): moved_( false ) |
59 | { |
60 | } |
61 | |
62 | YD( YD&& r ): moved_( false ) |
63 | { |
64 | r.moved_ = true; |
65 | } |
66 | |
67 | void operator()( Y* p ) const |
68 | { |
69 | BOOST_TEST( !moved_ ); |
70 | |
71 | if( p ) |
72 | { |
73 | p->deleted_ = true; |
74 | delete p; |
75 | } |
76 | else |
77 | { |
78 | BOOST_ERROR( "YD::operator()(0) called"); |
79 | } |
80 | } |
81 | |
82 | private: |
83 | |
84 | YD( YD const & ); |
85 | YD & operator=( YD const & ); |
86 | }; |
87 | |
88 | int main() |
89 | { |
90 | BOOST_TEST( Y::instances == 0 ); |
91 | |
92 | { |
93 | std::unique_ptr<Y, YD> p( new Y ); |
94 | BOOST_TEST( Y::instances == 1 ); |
95 | |
96 | boost::shared_ptr<Y> p2( std::move( p ) ); |
97 | |
98 | BOOST_TEST( Y::instances == 1 ); |
99 | BOOST_TEST( p.get() == 0 ); |
100 | BOOST_TEST( p.get_deleter().moved_ ); |
101 | |
102 | p2.reset(); |
103 | BOOST_TEST( Y::instances == 0 ); |
104 | } |
105 | |
106 | { |
107 | std::unique_ptr<Y, YD> p( new Y ); |
108 | BOOST_TEST( Y::instances == 1 ); |
109 | |
110 | boost::shared_ptr<void> p2( std::move( p ) ); |
111 | |
112 | BOOST_TEST( Y::instances == 1 ); |
113 | BOOST_TEST( p.get() == 0 ); |
114 | BOOST_TEST( p.get_deleter().moved_ ); |
115 | |
116 | p2.reset(); |
117 | BOOST_TEST( Y::instances == 0 ); |
118 | } |
119 | |
120 | { |
121 | std::unique_ptr<Y, YD> p( new Y ); |
122 | BOOST_TEST( Y::instances == 1 ); |
123 | |
124 | boost::shared_ptr<Y> p2; |
125 | p2 = std::move( p ); |
126 | |
127 | BOOST_TEST( Y::instances == 1 ); |
128 | BOOST_TEST( p.get() == 0 ); |
129 | BOOST_TEST( p.get_deleter().moved_ ); |
130 | |
131 | p2.reset(); |
132 | BOOST_TEST( Y::instances == 0 ); |
133 | } |
134 | |
135 | { |
136 | std::unique_ptr<Y, YD> p( new Y ); |
137 | BOOST_TEST( Y::instances == 1 ); |
138 | |
139 | boost::shared_ptr<void> p2( new int(0) ); |
140 | p2 = std::move( p ); |
141 | |
142 | BOOST_TEST( Y::instances == 1 ); |
143 | BOOST_TEST( p.get() == 0 ); |
144 | BOOST_TEST( p.get_deleter().moved_ ); |
145 | |
146 | p2.reset(); |
147 | BOOST_TEST( Y::instances == 0 ); |
148 | } |
149 | |
150 | return boost::report_errors(); |
151 | } |
152 | |
153 | #endif |
154 |