ReactorFactory.h

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/*
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or any later version.
 *
 * Hypertable 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef AsyncComm_ReactorFactory_h
#define AsyncComm_ReactorFactory_h

#include "Reactor.h"

#include <boost/thread/thread.hpp>

#include <atomic>
#include <cassert>
#include <mutex>
#include <random>
#include <set>
#include <vector>

namespace Hypertable {

  class ReactorFactory {

  public:

    static void initialize(uint16_t reactor_count);

    static void destroy();

    static void join();

    static void get_reactor(ReactorPtr &reactor,
                            Reactor::Priority priority = Reactor::Priority::NORMAL) {
      assert(ms_reactors.size() > 0);
      if (priority == Reactor::Priority::HIGH)
        reactor = ms_reactors.front();
      else
        reactor = ms_reactors[(ms_next_reactor++ % (ms_reactors.size()-2))+1];
    }

    static void get_timer_reactor(ReactorPtr &reactor) {
      assert(ms_reactors.size() > 0);
      reactor = ms_reactors.back();
    }

    static std::vector<ReactorPtr> ms_reactors;

    static boost::thread_group ms_threads;

    static std::default_random_engine rng;

    static bool ms_epollet;

    // Use POSIX poll() as polling mechanism
    static bool use_poll;

    static bool proxy_master;

    static bool verbose;

  private:

    static std::mutex ms_mutex;

    static std::atomic<int> ms_next_reactor;

  };
}

#endif // AsyncComm_ReactorFactory_h