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67 lines
1.3 KiB
C++
67 lines
1.3 KiB
C++
//
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// detail/null_mutex.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_NULL_MUTEX_HPP
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#define BOOST_ASIO_DETAIL_NULL_MUTEX_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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#include <boost/asio/detail/noncopyable.hpp>
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#include <boost/asio/detail/scoped_lock.hpp>
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#include <boost/asio/detail/push_options.hpp>
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namespace boost {
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namespace asio {
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namespace detail {
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class null_mutex
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: private noncopyable
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{
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public:
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typedef boost::asio::detail::scoped_lock<null_mutex> scoped_lock;
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// Constructor.
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null_mutex()
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{
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}
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// Destructor.
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~null_mutex()
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{
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}
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// Lock the mutex.
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void lock()
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{
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}
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// Unlock the mutex.
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void unlock()
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{
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}
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};
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} // namespace detail
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} // namespace asio
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} // namespace boost
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#include <boost/asio/detail/pop_options.hpp>
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#endif // !defined(BOOST_ASIO_HAS_THREADS)
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#endif // BOOST_ASIO_DETAIL_NULL_MUTEX_HPP
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