MpiTimeInterval.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2022 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* MpiTimeInterval.h                                           (C) 2000-2022 */
/*                                                                           */
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#ifndef ARCANE_PARALLEL_MPI_MPITIMEINTERVAL_H
#define ARCANE_PARALLEL_MPI_MPITIMEINTERVAL_H
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#include "arcane/parallel/mpi/ArcaneMpi.h"
 
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namespace Arcane
{
 
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class MpiTimeInterval
{
 public:
 
  MpiTimeInterval(double* cumulative_value)
  : m_cumulative_value(cumulative_value)
  {
    m_begin_time = _getTime();
  }
  ~MpiTimeInterval()
  {
    double end_time = _getTime();
    *m_cumulative_value += (end_time - m_begin_time);
  }
 
 private:
 
  inline double _getTime()
  {
    return MPI_Wtime();
  }
 
 private:
 
  double* m_cumulative_value;
  double m_begin_time = 0.0;
};
 
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} // namespace Arcane
 
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#endif