Ticket #2879: signal_handler.hpp

// Copyright (c) 2009 Dmitry Goncharov
//
// 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_POSIX_SIGNAL_HANDLER_HPP
#define BOOST_ASIO_POSIX_SIGNAL_HANDLER_HPP

#include <boost/asio/io_service.hpp>
#include <boost/asio/posix/stream_descriptor.hpp>
#include <boost/asio/read.hpp>
#include <boost/asio/posix/signalfd.hpp>

#if defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR) \
  || defined(GENERATING_DOCUMENTATION)

namespace boost { namespace asio { namespace posix {

template <int Signo>
class signal_handler
{
public:
    explicit signal_handler(io_service& ios)
        : m_sd(ios, m_sigfd.fd())
    {}

    template <typename Handler>
    void async_wait(Handler h)
    {
        async_read(m_sd, buffer(&m_buf, sizeof m_buf), h);
    }

private:
    signal_handler(signal_handler const&);
    signal_handler const& operator=(signal_handler const&);

private:
    signalfd<Signo> m_sigfd;
    stream_descriptor m_sd;
    typename signalfd<Signo>::buf_type m_buf;
};

}}}

#endif // defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
       //   || defined(GENERATING_DOCUMENTATION)
#endif