MemoryResourceMng.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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/* MemoryResourceMng.h                                         (C) 2000-2025 */
/*                                                                           */
/* Memory resource management for CPUs and accelerators.                     */
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#ifndef ARCCORE_COMMON_INTERNAL_MEMORYRESOURCEMNG_H
#define ARCCORE_COMMON_INTERNAL_MEMORYRESOURCEMNG_H
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#include "arccore/base/FixedArray.h"
 
#include "arccore/common/IMemoryResourceMng.h"
#include "arccore/common/internal/IMemoryResourceMngInternal.h"
 
#include <memory>
#include <array>
 
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namespace Arcane
{
 
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class ARCCORE_COMMON_EXPORT MemoryResourceMng
: public IMemoryResourceMng
, public IMemoryResourceMngInternal
{
 public:
 
  MemoryResourceMng();
 
 public:
 
  IMemoryAllocator* getAllocator(eMemoryResource r) override;
  IMemoryAllocator* getAllocator(eMemoryResource r, bool throw_if_not_found) override;
  IMemoryPool* getMemoryPoolOrNull(eMemoryResource r) override;
 
 public:
 
  void copy(ConstMemoryView from, eMemoryResource from_mem,
            MutableMemoryView to, eMemoryResource to_mem, const RunQueue* queue) override;
 
 public:
 
  void setAllocator(eMemoryResource r, IMemoryAllocator* allocator) override;
  void setMemoryPool(eMemoryResource r, IMemoryPool* pool) override;
  void setCopier(IMemoryCopier* copier) override { m_copier = copier; }
  void setIsAccelerator(bool v) override { m_is_accelerator = v; }
 
 public:

  IMemoryResourceMngInternal* _internal() override { return this; }
 
 public:

  static void genericCopy(ConstMemoryView from, MutableMemoryView to);
 
 private:

  FixedArray<IMemoryAllocator*, ARCCORE_NB_MEMORY_RESOURCE> m_allocators;
  FixedArray<IMemoryPool*, ARCCORE_NB_MEMORY_RESOURCE> m_memory_pools;
  std::unique_ptr<IMemoryCopier> m_default_memory_copier;
  IMemoryCopier* m_copier = nullptr;
  bool m_is_accelerator = false;
 
 private:
 
  inline int _checkValidResource(eMemoryResource r);
};
 
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} // End namespace Arcane
 
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#endif