artis-star/src/artis-star/common/scheduler/VectorScheduler.hpp

/**
 * @file common/scheduler/VectorScheduler.hpp
 * @author The ARTIS Development Team
 * See the AUTHORS or Authors.txt file
 */

/*
 * ARTIS - the multimodeling and simulation environment
 * This file is a part of the ARTIS environment
 *
 * Copyright (C) 2013-2019 ULCO http://www.univ-littoral.fr
 *
 * This program 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
 * (at your option) any later version.
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef COMMON_SCHEDULER_VECTOR_SCHEDULER_HPP
#define COMMON_SCHEDULER_VECTOR_SCHEDULER_HPP

#include <artis-star/common/InternalEvent.hpp>
#include <artis-star/common/scheduler/SchedulerHandle.hpp>

#include <algorithm>
#include <sstream>

namespace artis {
namespace common {
namespace scheduler {

template<class Time>
class VectorScheduler :
    protected std::vector<InternalEvent<Time, NoSchedulerHandle> >
{
public:
  VectorScheduler()
  {}

  virtual ~VectorScheduler()
  {}

  Model<Time, NoSchedulerHandle> *get_current_model()
  {
    return VectorScheduler<Time>::front().get_model();
  }

  Models<Time, NoSchedulerHandle> get_current_models(
      typename Time::type time) const
  {
    Models<Time, NoSchedulerHandle> models;

    for (typename VectorScheduler<Time>::const_iterator it =
        VectorScheduler<Time>::begin();
         it != VectorScheduler<Time>::end() and it->get_time() == time;
         ++it) {
      models.push_back(it->get_model());
    }
    return models;
  }

  typename Time::type get_current_time() const
  { return VectorScheduler<Time>::front().get_time(); }

  void init(typename Time::type time,
            Model<Time, NoSchedulerHandle> *model)
  {
    VectorScheduler<Time>::push_back(
        InternalEvent<Time, NoSchedulerHandle>(time, model));
    std::sort(VectorScheduler<Time>::begin(),
              VectorScheduler<Time>::end());
  }

  void put(typename Time::type time, Model<Time, NoSchedulerHandle> *model)
  {
    remove(model);
    VectorScheduler<Time>::push_back(
        InternalEvent<Time, NoSchedulerHandle>(time, model));
    std::sort(VectorScheduler<Time>::begin(),
              VectorScheduler<Time>::end());
  }

  std::string to_string() const
  {
    std::stringstream ss;

    ss << "Scheduler = { ";
    for (typename VectorScheduler<Time>::const_iterator it =
        VectorScheduler<Time>::begin();
         it != VectorScheduler<Time>::end(); ++it) {
      ss << "(" << it->get_time() << " -> " << it->get_model()->get_name()
         << ") ";
    }
    ss << "}";
    return ss.str();
  }

private:
  void remove(Model<Time, NoSchedulerHandle> *model)
  {
    typename VectorScheduler<Time>::iterator jt =
        VectorScheduler<Time>::begin();

    while (jt != VectorScheduler<Time>::end()) {
      if (jt->get_model() == model) {
        jt = VectorScheduler<Time>::erase(jt);
      } else {
        ++jt;
      }
    }
  }
};

}
}
} // namespace artis common scheduler

#endif