| // |
| // detail/null_mutex.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 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_MUTEX_HPP |
| #define BOOST_ASIO_DETAIL_NULL_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_HAS_THREADS) || defined(BOOST_ASIO_DISABLE_THREADS) |
| |
| #include <boost/asio/detail/noncopyable.hpp> |
| #include <boost/asio/detail/scoped_lock.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| namespace boost { |
| namespace asio { |
| namespace detail { |
| |
| class null_mutex |
| : private noncopyable |
| { |
| public: |
| typedef boost::asio::detail::scoped_lock<null_mutex> scoped_lock; |
| |
| // Constructor. |
| null_mutex() |
| { |
| } |
| |
| // Destructor. |
| ~null_mutex() |
| { |
| } |
| |
| // Lock the mutex. |
| void lock() |
| { |
| } |
| |
| // Unlock the mutex. |
| void unlock() |
| { |
| } |
| }; |
| |
| } // namespace detail |
| } // namespace asio |
| } // namespace boost |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // !defined(BOOST_HAS_THREADS) || defined(BOOST_ASIO_DISABLE_THREADS) |
| |
| #endif // BOOST_ASIO_DETAIL_NULL_MUTEX_HPP |