MpiParallelEnvironment.hpp

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//
// Copyright (C) 2019 - 2025.
// Terms register on the GPL-3.0 license.
//
// This file can be redistributed and/or modified under the license terms.
//
// See top level LICENSE file for more details.
//
// This file can be used citing references in CITATION.cff file.
 
#ifndef __GEDIM_MPIPARALLELENVIRONMENT_H
#define __GEDIM_MPIPARALLELENVIRONMENT_H
 
#include "IMpiProcess.hpp"
#include <memory>
 
namespace Gedim
{
class MpiParallelEnvironment
{
  protected:
    static std::shared_ptr<IMpiProcess> _process;
 
  public:
    static const IMpiProcess &Process()
    {
        return *_process;
    }
 
    template <typename ProcessType> static void Initialize(int argc, char **argv)
    {
#if USE_MPI == 1
        MPI::Init(argc, argv);
#endif
 
        unsigned int rank = 0;
        unsigned int numberProcesses = 1;
 
#if USE_MPI == 1
        MPI_Comm_rank(MPI_COMM_WORLD, (int *)&rank);
        MPI_Comm_size(MPI_COMM_WORLD, (int *)&numberProcesses);
#endif // USE_MPI
 
        _process.reset(new ProcessType(rank, numberProcesses, true));
    }
 
    static void Finalize()
    {
#if USE_MPI == 1
        MPI::Finalize();
#endif
    }
};
} // namespace Gedim
 
#endif // __GEDIM_MPIPARALLELENVIRONMENT_H