MpiMachineShMemWinBaseInternalCreator.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
//-----------------------------------------------------------------------------
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/* MpiMachineShMemWinBaseInternalCreator.h                     (C) 2000-2026 */
/*                                                                           */
/* Class allowing the creation of objects of type                            */
/* MpiContigMachineShMemWinBaseInternal.                                     */
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#ifndef ARCCORE_MESSAGEPASSINGMPI_INTERNAL_MPIMACHINESHMEMWINBASEINTERNALCREATOR_H
#define ARCCORE_MESSAGEPASSINGMPI_INTERNAL_MPIMACHINESHMEMWINBASEINTERNALCREATOR_H
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#include "arccore/collections/Array.h"
#include "arccore/message_passing/internal/IContigMachineShMemWinBaseInternal.h"
 
#include "arccore/message_passing_mpi/MessagePassingMpiGlobal.h"
 
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namespace Arcane::MessagePassing::Mpi
{
 
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class MpiContigMachineShMemWinBaseInternal;
class MpiMachineShMemWinBaseInternal;
class MpiMultiMachineShMemWinBaseInternal;
 
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class ARCCORE_MESSAGEPASSINGMPI_EXPORT MpiMachineShMemWinBaseInternalCreator
{
 public:
 
  explicit MpiMachineShMemWinBaseInternalCreator(const MPI_Comm& comm_machine, Int32 comm_machine_rank, Int32 comm_machine_size, const MPI_Comm& comm_world, Int32 comm_world_size);
 
  ~MpiMachineShMemWinBaseInternalCreator() = default;
 
 public:
 
  MpiContigMachineShMemWinBaseInternal* createWindow(Int64 sizeof_segment, Int32 sizeof_type) const;
  MpiMachineShMemWinBaseInternal* createDynamicWindow(Int64 sizeof_segment, Int32 sizeof_type) const;
  MpiMultiMachineShMemWinBaseInternal* createDynamicMultiWindow(SmallSpan<Int64> sizeof_segments, Int32 nb_segments_per_proc, Int32 sizeof_type) const;
 
  ConstArrayView<Int32> machineRanks() const;
  void machineBarrier() const;
 
 private:
 
  MPI_Comm m_comm_machine;
  Int32 m_comm_machine_rank = 0;
  Int32 m_comm_machine_size = 0;
  UniqueArray<Int32> m_machine_ranks;
};
 
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} // namespace Arcane::MessagePassing::Mpi
 
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#endif