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//
// detail/null_signal_blocker.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2012 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_SIGNAL_BLOCKER_HPP
#define BOOST_ASIO_DETAIL_NULL_SIGNAL_BLOCKER_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) \
|| defined(BOOST_WINDOWS) \
|| defined(__CYGWIN__) \
|| defined(__SYMBIAN32__)
#include <boost/asio/detail/noncopyable.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
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
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // !defined(BOOST_HAS_THREADS)
// || defined(BOOST_ASIO_DISABLE_THREADS)
// || defined(BOOST_WINDOWS)
// || defined(__CYGWIN__)
// || defined(__SYMBIAN32__)
#endif // BOOST_ASIO_DETAIL_NULL_SIGNAL_BLOCKER_HPP
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Swift