| // |
| // detail/atomic_count.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| // |
| // 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) |
| // |
| |
| #ifndef ASIO_DETAIL_ATOMIC_COUNT_HPP |
| #define ASIO_DETAIL_ATOMIC_COUNT_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| |
| #if !defined(ASIO_HAS_THREADS) |
| // Nothing to include. |
| #elif defined(ASIO_HAS_STD_ATOMIC) |
| # include <atomic> |
| #else // defined(ASIO_HAS_STD_ATOMIC) |
| # include <boost/detail/atomic_count.hpp> |
| #endif // defined(ASIO_HAS_STD_ATOMIC) |
| |
| namespace asio { |
| namespace detail { |
| |
| #if !defined(ASIO_HAS_THREADS) |
| typedef long atomic_count; |
| inline void increment(atomic_count& a, long b) { a += b; } |
| #elif defined(ASIO_HAS_STD_ATOMIC) |
| typedef std::atomic<long> atomic_count; |
| inline void increment(atomic_count& a, long b) { a += b; } |
| #else // defined(ASIO_HAS_STD_ATOMIC) |
| typedef boost::detail::atomic_count atomic_count; |
| inline void increment(atomic_count& a, long b) { while (b > 0) ++a, --b; } |
| #endif // defined(ASIO_HAS_STD_ATOMIC) |
| |
| } // namespace detail |
| } // namespace asio |
| |
| #endif // ASIO_DETAIL_ATOMIC_COUNT_HPP |