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7c673cae FG |
1 | #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SPIN_HPP_INCLUDED |
2 | #define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SPIN_HPP_INCLUDED | |
3 | ||
4 | // | |
5 | // boost/detail/atomic_count_spin.hpp | |
6 | // | |
7 | // Copyright (c) 2013 Peter Dimov | |
8 | // | |
9 | // Distributed under the Boost Software License, Version 1.0. | |
10 | // See accompanying file LICENSE_1_0.txt or copy at | |
11 | // http://www.boost.org/LICENSE_1_0.txt | |
12 | // | |
13 | ||
14 | #include <boost/smart_ptr/detail/spinlock_pool.hpp> | |
15 | ||
20effc67 TL |
16 | #if defined(BOOST_SP_REPORT_IMPLEMENTATION) |
17 | ||
18 | #include <boost/config/pragma_message.hpp> | |
19 | BOOST_PRAGMA_MESSAGE("Using spinlock-based atomic_count") | |
20 | ||
21 | #endif | |
22 | ||
7c673cae FG |
23 | namespace boost |
24 | { | |
25 | ||
26 | namespace detail | |
27 | { | |
28 | ||
29 | class atomic_count | |
30 | { | |
31 | private: | |
32 | ||
33 | public: | |
34 | ||
35 | explicit atomic_count( long v ): value_( v ) | |
36 | { | |
37 | } | |
38 | ||
39 | long operator++() | |
40 | { | |
41 | spinlock_pool<0>::scoped_lock lock( &value_ ); | |
42 | return ++value_; | |
43 | } | |
44 | ||
45 | long operator--() | |
46 | { | |
47 | spinlock_pool<0>::scoped_lock lock( &value_ ); | |
48 | return --value_; | |
49 | } | |
50 | ||
51 | operator long() const | |
52 | { | |
53 | spinlock_pool<0>::scoped_lock lock( &value_ ); | |
54 | return value_; | |
55 | } | |
56 | ||
57 | private: | |
58 | ||
59 | atomic_count(atomic_count const &); | |
60 | atomic_count & operator=(atomic_count const &); | |
61 | ||
62 | long value_; | |
63 | }; | |
64 | ||
65 | } // namespace detail | |
66 | ||
67 | } // namespace boost | |
68 | ||
69 | #endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SPIN_HPP_INCLUDED |