1 | // |
2 | // ip_hash_test.cpp |
3 | // |
4 | // Copyright 2011 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/intrusive_ptr.hpp> |
12 | #include <boost/functional/hash.hpp> |
13 | #include <boost/core/lightweight_test.hpp> |
14 | |
15 | class base |
16 | { |
17 | private: |
18 | |
19 | int use_count_; |
20 | |
21 | base(base const &); |
22 | base & operator=(base const &); |
23 | |
24 | protected: |
25 | |
26 | base(): use_count_(0) |
27 | { |
28 | } |
29 | |
30 | virtual ~base() |
31 | { |
32 | } |
33 | |
34 | public: |
35 | |
36 | long use_count() const |
37 | { |
38 | return use_count_; |
39 | } |
40 | |
41 | inline friend void intrusive_ptr_add_ref(base * p) |
42 | { |
43 | ++p->use_count_; |
44 | } |
45 | |
46 | inline friend void intrusive_ptr_release(base * p) |
47 | { |
48 | if(--p->use_count_ == 0) delete p; |
49 | } |
50 | }; |
51 | |
52 | struct X: public base |
53 | { |
54 | }; |
55 | |
56 | int main() |
57 | { |
58 | boost::hash< boost::intrusive_ptr<X> > hasher; |
59 | |
60 | boost::intrusive_ptr<X> p1, p2( p1 ), p3( new X ), p4( p3 ), p5( new X ); |
61 | |
62 | BOOST_TEST_EQ( p1, p2 ); |
63 | BOOST_TEST_EQ( hasher( p1 ), hasher( p2 ) ); |
64 | |
65 | BOOST_TEST_NE( p1, p3 ); |
66 | BOOST_TEST_NE( hasher( p1 ), hasher( p3 ) ); |
67 | |
68 | BOOST_TEST_EQ( p3, p4 ); |
69 | BOOST_TEST_EQ( hasher( p3 ), hasher( p4 ) ); |
70 | |
71 | BOOST_TEST_NE( p3, p5 ); |
72 | BOOST_TEST_NE( hasher( p3 ), hasher( p5 ) ); |
73 | |
74 | return boost::report_errors(); |
75 | } |
76 | |