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48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
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//
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// detail/atomic_count.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_ASIO_DETAIL_ATOMIC_COUNT_HPP
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#define BOOST_ASIO_DETAIL_ATOMIC_COUNT_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include <boost/asio/detail/config.hpp>
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#if !defined(BOOST_ASIO_HAS_THREADS)
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// Nothing to include.
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#elif defined(BOOST_ASIO_HAS_STD_ATOMIC)
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# include <atomic>
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#else // defined(BOOST_ASIO_HAS_STD_ATOMIC)
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# include <boost/detail/atomic_count.hpp>
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#endif // defined(BOOST_ASIO_HAS_STD_ATOMIC)
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namespace boost {
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namespace asio {
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namespace detail {
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#if !defined(BOOST_ASIO_HAS_THREADS)
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typedef long atomic_count;
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inline void increment(atomic_count& a, long b) { a += b; }
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#elif defined(BOOST_ASIO_HAS_STD_ATOMIC)
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typedef std::atomic<long> atomic_count;
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inline void increment(atomic_count& a, long b) { a += b; }
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#else // defined(BOOST_ASIO_HAS_STD_ATOMIC)
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typedef boost::detail::atomic_count atomic_count;
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inline void increment(atomic_count& a, long b) { while (b > 0) ++a, --b; }
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#endif // defined(BOOST_ASIO_HAS_STD_ATOMIC)
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} // namespace detail
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} // namespace asio
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} // namespace boost
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#endif // BOOST_ASIO_DETAIL_ATOMIC_COUNT_HPP
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