Tpetra_Core.hpp

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// @HEADER
// *****************************************************************************
//          Tpetra: Templated Linear Algebra Services Package
//
// Copyright 2008 NTESS and the Tpetra contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef TPETRA_CORE_HPP
#define TPETRA_CORE_HPP


#include <Tpetra_ConfigDefs.hpp>
#include <Teuchos_Comm.hpp>
#ifdef HAVE_TPETRACORE_MPI
#  include "mpi.h"
#endif // HAVE_TPETRACORE_MPI

namespace Tpetra {

  Teuchos::RCP<const Teuchos::Comm<int> > getDefaultComm ();

  bool isInitialized ();

  void initialize (int* argc, char*** argv);

#ifdef HAVE_TPETRA_MPI
  void initialize (int* argc, char*** argv, MPI_Comm comm);
#endif // HAVE_TPETRA_MPI

  void
  initialize (int* argc, char*** argv,
              const Teuchos::RCP<const Teuchos::Comm<int> >& comm);

  void finalize ();

  class ScopeGuard {
  public:
    ScopeGuard (int* argc, char*** argv);

#ifdef HAVE_TPETRA_MPI
    ScopeGuard (int* argc, char*** argv, MPI_Comm comm);
#endif // HAVE_TPETRA_MPI

    ScopeGuard () = delete;

    ~ScopeGuard ();
  };

} // namespace Tpetra

#endif // TPETRA_CORE_HPP