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 
16 namespace boost
17 {
18 
19 namespace detail
20 {
21 
22 class atomic_count
23 {
24 private:
25 
26 public:
27 
atomic_count(long v)28     explicit atomic_count( long v ): value_( v )
29     {
30     }
31 
operator ++()32     long operator++()
33     {
34         spinlock_pool<0>::scoped_lock lock( &value_ );
35         return ++value_;
36     }
37 
operator --()38     long operator--()
39     {
40         spinlock_pool<0>::scoped_lock lock( &value_ );
41         return --value_;
42     }
43 
operator long() const44     operator long() const
45     {
46         spinlock_pool<0>::scoped_lock lock( &value_ );
47         return value_;
48     }
49 
50 private:
51 
52     atomic_count(atomic_count const &);
53     atomic_count & operator=(atomic_count const &);
54 
55     long value_;
56 };
57 
58 } // namespace detail
59 
60 } // namespace boost
61 
62 #endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_SPIN_HPP_INCLUDED
63