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- //
- // detail/null_static_mutex.hpp
- // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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_NULL_STATIC_MUTEX_HPP
- #define ASIO_DETAIL_NULL_STATIC_MUTEX_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)
-
- #include "asio/detail/scoped_lock.hpp"
-
- #include "asio/detail/push_options.hpp"
-
- namespace asio {
- namespace detail {
-
- struct null_static_mutex
- {
- typedef 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 ASIO_NULL_STATIC_MUTEX_INIT { 0 }
-
- } // namespace detail
- } // namespace asio
-
- #include "asio/detail/pop_options.hpp"
-
- #endif // !defined(ASIO_HAS_THREADS)
-
- #endif // ASIO_DETAIL_NULL_STATIC_MUTEX_HPP
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