IMultiReduce.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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/* IMultiReduce.h                                              (C) 2000-2016 */
/*                                                                           */
/* Gestion de réductions multiples.                                          */
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#ifndef ARCANE_PARALLEL_IMULTIREDUCE_H
#define ARCANE_PARALLEL_IMULTIREDUCE_H
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#include "arcane/utils/Array.h"
 
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ARCANE_BEGIN_NAMESPACE
 
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class ARCANE_CORE_EXPORT ReduceSumOfRealHelper
{
 public:
 
  ReduceSumOfRealHelper(bool is_strict)
  : m_reduced_value(0.0), m_is_strict(is_strict)
  {
    if (!m_is_strict)
      m_values.add(0.0);
  }
 
 public:
 
  void add(Real v)
  {
    if (m_is_strict)
      m_values.add(v);
    else
      m_values[0] += v;
  }
  
  void clear()
  {
    m_values.clear();
  }
  
  RealConstArrayView values() const { return m_values; }
  
  Real reducedValue() const { return m_reduced_value; }
 
  void setReducedValue(Real v) { m_reduced_value = v; }
 
 private:
  SharedArray<Real> m_values;
  Real m_reduced_value;
  bool m_is_strict;
};
 
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class ARCANE_CORE_EXPORT IMultiReduce
{
 public:
 
  virtual ~IMultiReduce(){} 
 
 public:
 
  static IMultiReduce* create(IParallelMng* pm);
 
 public:
  
  virtual void execute() =0;
 
  virtual bool isStrict() const =0;
 
  virtual void setStrict(bool is_strict) =0;
 
 public:
 
  virtual ReduceSumOfRealHelper* getSumOfReal(const String& name) =0;
};
 
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ARCANE_END_NAMESPACE
 
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#endif