source: NonGTP/Boost/boost/detail/atomic_count_win32.hpp @ 857

Revision 857, 1.2 KB checked in by igarcia, 19 years ago (diff)
Line 
1#ifndef BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
2#define BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
3
4// MS compatible compilers support #pragma once
5
6#if defined(_MSC_VER) && (_MSC_VER >= 1020)
7# pragma once
8#endif
9
10//
11//  boost/detail/atomic_count_win32.hpp
12//
13//  Copyright (c) 2001-2005 Peter Dimov
14//
15// Distributed under the Boost Software License, Version 1.0. (See
16// accompanying file LICENSE_1_0.txt or copy at
17// http://www.boost.org/LICENSE_1_0.txt)
18//
19
20#include <boost/detail/interlocked.hpp>
21
22namespace boost
23{
24
25namespace detail
26{
27
28class atomic_count
29{
30public:
31
32    explicit atomic_count( long v ): value_( v )
33    {
34    }
35
36    long operator++()
37    {
38        return BOOST_INTERLOCKED_INCREMENT( &value_ );
39    }
40
41    long operator--()
42    {
43        return BOOST_INTERLOCKED_DECREMENT( &value_ );
44    }
45
46    operator long() const
47    {
48        return static_cast<long const volatile &>( value_ );
49    }
50
51private:
52
53    atomic_count( atomic_count const & );
54    atomic_count & operator=( atomic_count const & );
55
56    long value_;
57};
58
59} // namespace detail
60
61} // namespace boost
62
63#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED
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