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- //
- // detail/null_static_mutex.hpp
- // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2021 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 BOOST_ASIO_DETAIL_NULL_STATIC_MUTEX_HPP
- #define BOOST_ASIO_DETAIL_NULL_STATIC_MUTEX_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include <boost/asio/detail/config.hpp>
- #if !defined(BOOST_ASIO_HAS_THREADS)
- #include <boost/asio/detail/scoped_lock.hpp>
- #include <boost/asio/detail/push_options.hpp>
- namespace boost {
- namespace asio {
- namespace detail {
- struct null_static_mutex
- {
- typedef boost::asio::detail::scoped_lock<null_static_mutex> scoped_lock;
- // Initialise the mutex.
- void init()
- {
- }
- // Lock the mutex.
- void lock()
- {
- }
- // Unlock the mutex.
- void unlock()
- {
- }
- int unused_;
- };
- #define BOOST_ASIO_NULL_STATIC_MUTEX_INIT { 0 }
- } // namespace detail
- } // namespace asio
- } // namespace boost
- #include <boost/asio/detail/pop_options.hpp>
- #endif // !defined(BOOST_ASIO_HAS_THREADS)
- #endif // BOOST_ASIO_DETAIL_NULL_STATIC_MUTEX_HPP
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