AnasaziBasicOutputManager.hpp

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// @HEADER
// *****************************************************************************
//                 Anasazi: Block Eigensolvers Package
//
// Copyright 2004 NTESS and the Anasazi contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef ANASAZI_BASIC_OUTPUT_MANAGER_HPP
#define ANASAZI_BASIC_OUTPUT_MANAGER_HPP

#include "AnasaziConfigDefs.hpp"
#include "AnasaziOutputManager.hpp"
#include "Teuchos_oblackholestream.hpp"

#ifdef HAVE_MPI
#include <mpi.h>
#include "AnasaziGlobalComm.hpp"
#endif

namespace Anasazi {

  template <class ScalarType>
  class BasicOutputManager : public OutputManager<ScalarType> {

    public:



      BasicOutputManager(int vb = Anasazi::Errors, int rootRank = 0);

      BasicOutputManager(int vb,
                         const Teuchos::RCP<Teuchos::FancyOStream>& fos)
      : OutputManager<ScalarType>(vb, fos)
      {};

      virtual ~BasicOutputManager() {};


    private:



      BasicOutputManager( const OutputManager<ScalarType>& OM );

      BasicOutputManager<ScalarType>& operator=( const OutputManager<ScalarType>& OM );

  };

  template<class ScalarType>
  BasicOutputManager<ScalarType>::BasicOutputManager(int vb, int rootRank)
  : OutputManager<ScalarType>(vb)
  {
#ifdef HAVE_MPI
    // The OutputManger constructor will create fos_ that outputs to std::cout
    // This class will query MPI to print on processor 0, if parallel.
    int myRank = 0;
    int numProcs = 1;
    // Initialize MPI
    int mpiStarted = 0;
    MPI_Initialized(&mpiStarted);
    if (mpiStarted)
    {
      MPI_Comm_rank(get_global_comm(), &myRank);
      MPI_Comm_size(get_global_comm(), &numProcs);
    }
    this->fos_->setProcRankAndSize(myRank, numProcs);
    this->fos_->setOutputToRootOnly(rootRank);
#endif
  }

} // end Anasazi namespace

#endif

// end of file AnasaziOutputManager.hpp