SharedMemoryMachineShMemWinBaseInternalCreator.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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/* SharedMemoryMachineShMemWinBaseInternalCreator.h            (C) 2000-2026 */
/*                                                                           */
/* Class allowing the creation of objects of type                            */
/* SharedMemoryContigMachineShMemWinBaseInternal. An instance of this object */
/* must be shared by all threads.                                            */
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#ifndef ARCANE_PARALLEL_THREAD_INTERNAL_SHAREDMEMORYMACHINESHMEMWINBASEINTERNALCREATOR_H
#define ARCANE_PARALLEL_THREAD_INTERNAL_SHAREDMEMORYMACHINESHMEMWINBASEINTERNALCREATOR_H
 
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#include "arcane/core/ArcaneTypes.h"
#include "arcane/utils/UniqueArray.h"
#include "arcane/utils/Ref.h"
 
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namespace Arcane::MessagePassing
{
 
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class SharedMemoryContigMachineShMemWinBaseInternal;
class SharedMemoryMachineShMemWinBaseInternal;
 
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class SharedMemoryMachineShMemWinBaseInternalCreator
{
 public:
 
  SharedMemoryMachineShMemWinBaseInternalCreator(Int32 nb_rank, IThreadBarrier* barrier);
  ~SharedMemoryMachineShMemWinBaseInternalCreator() = default;
 
 public:
 
  SharedMemoryContigMachineShMemWinBaseInternal* createWindow(Int32 my_rank, Int64 sizeof_segment, Int32 sizeof_type);
  SharedMemoryMachineShMemWinBaseInternal* createDynamicWindow(Int32 my_rank, Int64 sizeof_segment, Int32 sizeof_type);
  ConstArrayView<Int32> machineRanks() const;
  void machineBarrier() const;
 
 private:
 
  Int32 m_nb_rank = 0;
  Int64 m_sizeof_window = 0;
  UniqueArray<Int32> m_ranks;
  IThreadBarrier* m_barrier = nullptr;
 
  Ref<UniqueArray<std::byte>> m_window;
  Ref<UniqueArray<Int64>> m_sizeof_segments;
  Ref<UniqueArray<Int64>> m_sum_sizeof_segments;
  //-------
  Ref<UniqueArray<UniqueArray<std::byte>>> m_windows;
  Ref<UniqueArray<Int32>> m_target_segments;
};
 
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} // namespace Arcane::MessagePassing
 
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#endif