MemoryUtils.h

Aller à la documentation de ce fichier.

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2024 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
/*---------------------------------------------------------------------------*/
/* MemoryUtils.h                                               (C) 2000-2024 */
/*                                                                           */
/* Fonctions utilitaires de gestion mémoire.                                 */
/*---------------------------------------------------------------------------*/
#ifndef ARCANE_UTILS_MEMORYUTILS_H
#define ARCANE_UTILS_MEMORYUTILS_H
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#include "arcane/utils/MemoryRessource.h"
#include "arcane/utils/MemoryView.h"
 
#include "arccore/collections/MemoryAllocationArgs.h"
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
namespace Arcane::MemoryUtils
{
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT eMemoryResource
getDefaultDataMemoryResource();
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT eMemoryResource
getMemoryResourceFromName(const String& name);
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT IMemoryAllocator*
getDefaultDataAllocator();
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT MemoryAllocationOptions
getDefaultDataAllocator(eMemoryLocationHint hint);
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT IMemoryAllocator*
getDeviceOrHostAllocator();
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT MemoryAllocationOptions
getAllocatorForMostlyReadOnlyData();
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_DEPRECATED_REASON("Y2024: Use getDefaultDataAllocator() instead.")
ARCANE_UTILS_EXPORT IMemoryAllocator*
getAcceleratorHostMemoryAllocator();
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT MemoryAllocationOptions
getAllocationOptions(eMemoryResource mem_resource);
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT IMemoryAllocator*
getAllocator(eMemoryResource mem_resource);
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
namespace impl
{
  extern "C++" ARCANE_UTILS_EXPORT Int64
  computeCapacity(Int64 size);
} // namespace impl
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
template <typename DataType> inline Int32
checkResizeArrayWithCapacity(Array<DataType>& array, Int64 new_size, bool force_resize)
{
  Int32 ret_value = 0;
  Int64 s = array.largeSize();
  if (new_size > s || force_resize) {
    ret_value = 1;
    if (new_size > array.capacity()) {
      array.reserve(impl::computeCapacity(new_size));
      ret_value = 2;
    }
    array.resize(new_size);
  }
  return ret_value;
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
template <typename DataType> inline Int32
checkResizeArrayWithCapacity(Array<DataType>& array, Int64 new_size)
{
  return checkResizeArrayWithCapacity(array, new_size, false);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
extern "C++" ARCANE_UTILS_EXPORT void
copy(MutableMemoryView destination, eMemoryResource destination_mem,
     ConstMemoryView source, eMemoryResource source_mem,
     const RunQueue* queue = nullptr);
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

inline void
copy(MutableMemoryView destination, ConstMemoryView source, const RunQueue* queue = nullptr)
{
  eMemoryResource mem_type = eMemoryResource::Unknown;
  copy(destination, mem_type, source, mem_type, queue);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/

template <typename DataType> inline void
copy(Span<DataType> destination, Span<const DataType> source, const RunQueue* queue = nullptr)
{
  ConstMemoryView input(asBytes(source));
  MutableMemoryView output(asWritableBytes(destination));
  copy(output, input, queue);
}

template <typename DataType> inline void
copy(SmallSpan<DataType> destination, SmallSpan<const DataType> source, const RunQueue* queue = nullptr)
{
  copy(Span<DataType>(destination), Span<const DataType>(source), queue);
}
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
} // namespace Arcane::MemoryUtils
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
 
#endif