superCommunicator.h

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2020 Adrian Kummerlaender
 *  E-mail contact: info@openlb.net
 *  The most recent release of OpenLB can be downloaded at
 *  <http://www.openlb.net/>
 *
 *  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 2
 *  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, write to the Free
 *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
*/
 
#ifndef SUPER_COMMUNICATOR_H
#define SUPER_COMMUNICATOR_H
 
#include <set>
#include <vector>
#include <algorithm>
 
#include "mpiManager.h"
#include "loadBalancer.h"
#include "blockCommunicator.h"
#include "blockCommunicationNeighborhood.h"
#include "superCommunicationTagCoordinator.h"
#include "utilities/functorPtr.h"
 
namespace olb {
 
 
 
template <typename T, typename SUPER>
class SuperCommunicator {
private:
  SUPER& _super;
 
#ifdef PARALLEL_MODE_MPI
  SuperCommunicationTagCoordinator<T> _tagCoordinator;
  MPI_Comm _neighborhoodComm; 
  MPI_Comm _communicatorComm; 
#endif
 
  std::vector<std::unique_ptr<BlockCommunicationNeighborhood<T,SUPER::d>>> _blockNeighborhoods;
  std::vector<std::unique_ptr<BlockCommunicator>> _blockCommunicators;
 
  std::vector<std::type_index> _fieldsRequested;
  std::set<int> _remoteCuboidNeighborhood;
 
  bool _enabled = false;
  bool _ready   = false;
 
public:
  SuperCommunicator(SUPER& super);
  ~SuperCommunicator();
 
 
  template <typename FIELD>
  void requestField() {
    if (std::find(_fieldsRequested.begin(), _fieldsRequested.end(), typeid(FIELD)) == _fieldsRequested.end()) {
      _fieldsRequested.emplace_back(typeid(FIELD));
      for (auto& neighborhood : _blockNeighborhoods) {
        neighborhood->template requestField<FIELD>();
      }
    }
  }
 
  template <typename... FIELDS>
  void requestFields() {
    (requestField<FIELDS>(), ...);
  }
 
  void requestCell(LatticeR<SUPER::d+1> latticeR);
  void requestOverlap(int width);
  void requestOverlap(int width, FunctorPtr<SuperIndicatorF<T,SUPER::d>>&& indicatorF);
 
  void clearRequestedCells();
 
  void exchangeRequests();
 
  void communicate();
 
  const std::set<int>& getRemoteCuboids() const;
 
};
 
template <typename SUPER>
SuperCommunicator(SUPER&) -> SuperCommunicator<typename SUPER::value_t,SUPER>;
 
}
 
#endif