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- //
- // null_signal_blocker.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 ASIO_DETAIL_NULL_SIGNAL_BLOCKER_HPP
- #define ASIO_DETAIL_NULL_SIGNAL_BLOCKER_HPP
- #if defined(_MSC_VER) && (_MSC_VER >= 1200)
- # pragma once
- #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
- #include "asio/detail/push_options.hpp"
- #include "asio/detail/push_options.hpp"
- #include <boost/config.hpp>
- #include "asio/detail/pop_options.hpp"
- #if !defined(BOOST_HAS_THREADS) || defined(ASIO_DISABLE_THREADS)
- #include "asio/detail/noncopyable.hpp"
- namespace asio {
- namespace detail {
- class null_signal_blocker
- : private noncopyable
- {
- public:
- // Constructor blocks all signals for the calling thread.
- null_signal_blocker()
- {
- }
- // Destructor restores the previous signal mask.
- ~null_signal_blocker()
- {
- }
- // Block all signals for the calling thread.
- void block()
- {
- }
- // Restore the previous signal mask.
- void unblock()
- {
- }
- };
- } // namespace detail
- } // namespace asio
- #endif // !defined(BOOST_HAS_THREADS) || defined(ASIO_DISABLE_THREADS)
- #include "asio/detail/pop_options.hpp"
- #endif // ASIO_DETAIL_NULL_SIGNAL_BLOCKER_HPP
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