IGatherGroup.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
/*---------------------------------------------------------------------------*/
/* IGatherGroup.h                                              (C) 2000-2026 */
/*                                                                           */
/* Interface for managing groupings across a limited number of subdomains.   */
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#ifndef ARCANE_CORE_INTERNAL_IGATHERGROUP_H
#define ARCANE_CORE_INTERNAL_IGATHERGROUP_H
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#include "arcane/core/ArcaneTypes.h"
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
namespace Arcane
{
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

class ARCANE_CORE_EXPORT IGatherGroup
{
 
 public:
 
  virtual ~IGatherGroup() = default;
 
 public:

  virtual bool isNeedGather() = 0;

  virtual void gatherToMasterIO(Int64 sizeof_elem, Span<const Byte> in, Span<Byte> out) = 0;
};
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

class ARCANE_CORE_EXPORT IGatherGroupInfo
{
 public:
 
  virtual ~IGatherGroupInfo() = default;
 
 public:

  virtual void computeSize(Int32 nb_elem_in) = 0;

  virtual void setNeedRecompute() = 0;

  virtual bool isComputed() = 0;

  virtual Int32 nbElemOutput() = 0;

  virtual Int32 sizeOfOutput(Int32 sizeof_type) = 0;

  virtual SmallSpan<Int32> nbElemRecvGatherToMasterIO() = 0;

  virtual Int32 nbWriterGlobal() = 0;
};
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
} // End namespace Arcane
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#endif