connection.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2018 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#ifndef NDN_UTIL_SIGNAL_CONNECTION_HPP
#define NDN_UTIL_SIGNAL_CONNECTION_HPP

#include "ndn-cxx/detail/common.hpp"

namespace ndn {
namespace util {
namespace signal {

class Connection
{
public:
  constexpr
  Connection() noexcept = default;

  void
  disconnect();

  bool
  isConnected() const noexcept;

  bool
  operator==(const Connection& other) const;

  bool
  operator!=(const Connection& other) const;

private:
  explicit
  Connection(weak_ptr<function<void()>> disconnect) noexcept;

  template<typename Owner, typename ...TArgs>
  friend class Signal;

private:
  weak_ptr<function<void()>> m_disconnect;
};

} // namespace signal
} // namespace util
} // namespace ndn

#endif // NDN_UTIL_SIGNAL_CONNECTION_HPP