boost/smart_ptr/detail/atomic_count_nt.hpp

#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_NT_HPP_INCLUDED
#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_NT_HPP_INCLUDED
//
//  boost/detail/atomic_count_nt.hpp
//
//  Trivial atomic_count for the single-threaded case
//
//  http://gcc.gnu.org/onlinedocs/porting/Thread-safety.html
//
//  Copyright 2013 Peter Dimov
//
//  Distributed under the Boost Software License, Version 1.0.
//  See accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt
//
namespace boost
{
namespace detail
{
class atomic_count
{
public:
    explicit atomic_count( long v ): value_( v )
    {
    }
    long operator++()
    {
        return ++value_;
    }
    long operator--()
    {
        return --value_;
    }
    operator long() const
    {
        return value_;
    }
private:
    atomic_count(atomic_count const &);
    atomic_count & operator=(atomic_count const &);
    long value_;
};
} // namespace detail
} // namespace boost
#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_NT_HPP_INCLUDED