1 | // |
---|---|
2 | // shared_ptr_rv_test.cpp |
3 | // |
4 | // Copyright (c) 2007 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/core/lightweight_test.hpp> |
13 | |
14 | struct X |
15 | { |
16 | static long instances; |
17 | |
18 | X() |
19 | { |
20 | ++instances; |
21 | } |
22 | |
23 | ~X() |
24 | { |
25 | --instances; |
26 | } |
27 | |
28 | static boost::shared_ptr<X> create() |
29 | { |
30 | return boost::shared_ptr<X>( new X ); |
31 | } |
32 | |
33 | private: |
34 | |
35 | X( X const & ); |
36 | X & operator=( X const & ); |
37 | }; |
38 | |
39 | long X::instances = 0; |
40 | |
41 | int main() |
42 | { |
43 | BOOST_TEST( X::instances == 0 ); |
44 | |
45 | { |
46 | boost::shared_ptr<X> p( X::create() ); |
47 | BOOST_TEST( X::instances == 1 ); |
48 | |
49 | p = X::create(); |
50 | BOOST_TEST( X::instances == 1 ); |
51 | |
52 | p.reset(); |
53 | BOOST_TEST( X::instances == 0 ); |
54 | |
55 | p = X::create(); |
56 | BOOST_TEST( X::instances == 1 ); |
57 | } |
58 | |
59 | BOOST_TEST( X::instances == 0 ); |
60 | |
61 | { |
62 | boost::shared_ptr<X const> p( X::create() ); |
63 | BOOST_TEST( X::instances == 1 ); |
64 | |
65 | p = X::create(); |
66 | BOOST_TEST( X::instances == 1 ); |
67 | |
68 | p.reset(); |
69 | BOOST_TEST( X::instances == 0 ); |
70 | |
71 | p = X::create(); |
72 | BOOST_TEST( X::instances == 1 ); |
73 | } |
74 | |
75 | BOOST_TEST( X::instances == 0 ); |
76 | |
77 | { |
78 | boost::shared_ptr<void> p( X::create() ); |
79 | BOOST_TEST( X::instances == 1 ); |
80 | |
81 | p = X::create(); |
82 | BOOST_TEST( X::instances == 1 ); |
83 | |
84 | p.reset(); |
85 | BOOST_TEST( X::instances == 0 ); |
86 | |
87 | p = X::create(); |
88 | BOOST_TEST( X::instances == 1 ); |
89 | } |
90 | |
91 | BOOST_TEST( X::instances == 0 ); |
92 | |
93 | { |
94 | boost::shared_ptr<void const> p( X::create() ); |
95 | BOOST_TEST( X::instances == 1 ); |
96 | |
97 | p = X::create(); |
98 | BOOST_TEST( X::instances == 1 ); |
99 | |
100 | p.reset(); |
101 | BOOST_TEST( X::instances == 0 ); |
102 | |
103 | p = X::create(); |
104 | BOOST_TEST( X::instances == 1 ); |
105 | } |
106 | |
107 | BOOST_TEST( X::instances == 0 ); |
108 | |
109 | return boost::report_errors(); |
110 | } |
111 |