null_static_mutex.hpp
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//
// detail/null_static_mutex.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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