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_RVALUE_REFERENCES ) |
13 | |
14 | BOOST_PRAGMA_MESSAGE("Skipping test because BOOST_NO_CXX11_RVALUE_REFERENCES is defined" ) |
15 | int main() {} |
16 | |
17 | #else |
18 | |
19 | struct Y |
20 | { |
21 | static int instances; |
22 | |
23 | bool deleted_; |
24 | |
25 | Y(): deleted_( false ) |
26 | { |
27 | ++instances; |
28 | } |
29 | |
30 | ~Y() |
31 | { |
32 | BOOST_TEST( deleted_ ); |
33 | --instances; |
34 | } |
35 | |
36 | private: |
37 | |
38 | Y( Y const & ); |
39 | Y & operator=( Y const & ); |
40 | }; |
41 | |
42 | int Y::instances = 0; |
43 | |
44 | struct YD |
45 | { |
46 | bool moved_; |
47 | |
48 | YD(): moved_( false ) |
49 | { |
50 | } |
51 | |
52 | YD( YD&& r ): moved_( false ) |
53 | { |
54 | r.moved_ = true; |
55 | } |
56 | |
57 | void operator()( Y* p ) const |
58 | { |
59 | BOOST_TEST( !moved_ ); |
60 | |
61 | if( p ) |
62 | { |
63 | p->deleted_ = true; |
64 | delete p; |
65 | } |
66 | } |
67 | |
68 | private: |
69 | |
70 | YD( YD const & ); |
71 | YD & operator=( YD const & ); |
72 | }; |
73 | |
74 | int main() |
75 | { |
76 | BOOST_TEST( Y::instances == 0 ); |
77 | |
78 | { |
79 | YD del; |
80 | boost::shared_ptr<Y> p( new Y, std::move( del ) ); |
81 | |
82 | BOOST_TEST( Y::instances == 1 ); |
83 | BOOST_TEST( del.moved_ ); |
84 | |
85 | p.reset( p: new Y, d: YD() ); |
86 | |
87 | BOOST_TEST( Y::instances == 1 ); |
88 | |
89 | p = boost::shared_ptr<Y>( new Y, YD() ); |
90 | |
91 | BOOST_TEST( Y::instances == 1 ); |
92 | |
93 | YD del2; |
94 | p.reset( p: new Y, d: std::move( del2 ) ); |
95 | |
96 | BOOST_TEST( Y::instances == 1 ); |
97 | BOOST_TEST( del2.moved_ ); |
98 | |
99 | p.reset(); |
100 | BOOST_TEST( Y::instances == 0 ); |
101 | } |
102 | |
103 | { |
104 | YD del; |
105 | boost::shared_ptr<Y> p( new Y, std::move( del ), std::allocator<Y>() ); |
106 | |
107 | BOOST_TEST( Y::instances == 1 ); |
108 | BOOST_TEST( del.moved_ ); |
109 | |
110 | p.reset( p: new Y, d: YD(), a: std::allocator<Y>() ); |
111 | |
112 | BOOST_TEST( Y::instances == 1 ); |
113 | |
114 | p = boost::shared_ptr<Y>( new Y, YD(), std::allocator<Y>() ); |
115 | |
116 | BOOST_TEST( Y::instances == 1 ); |
117 | |
118 | YD del2; |
119 | p.reset( p: new Y, d: std::move( del2 ), a: std::allocator<Y>() ); |
120 | |
121 | BOOST_TEST( Y::instances == 1 ); |
122 | BOOST_TEST( del2.moved_ ); |
123 | |
124 | p.reset(); |
125 | BOOST_TEST( Y::instances == 0 ); |
126 | } |
127 | |
128 | #if !defined( BOOST_NO_CXX11_NULLPTR ) |
129 | |
130 | { |
131 | boost::shared_ptr<Y> p( nullptr, YD() ); |
132 | |
133 | YD del; |
134 | p = boost::shared_ptr<Y>( nullptr, std::move( del ) ); |
135 | |
136 | BOOST_TEST( del.moved_ ); |
137 | } |
138 | |
139 | { |
140 | boost::shared_ptr<Y> p( nullptr, YD(), std::allocator<Y>() ); |
141 | |
142 | YD del; |
143 | p = boost::shared_ptr<Y>( nullptr, std::move( del ), std::allocator<Y>() ); |
144 | |
145 | BOOST_TEST( del.moved_ ); |
146 | } |
147 | |
148 | #endif |
149 | |
150 | return boost::report_errors(); |
151 | } |
152 | |
153 | #endif |
154 | |