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occt/src/NCollection/NCollection_AlignedAllocator.hxx
dpasukhi 1103eb60af 0033370: Foundation Classes - Moving into STL and Boost functionality
NCollection containers update:
  - NCollection_Array1 - updated functionality
  - NCollection_Array2 - NCollection_Array1 as a wrapper for 2array
  - NCollection_Vector -> NCollection_DynamicArray was renamed and reworked.
TCollection:
  - Use static empty string to avoid allocations on empty string
 NCollection allocators update:
  - NCollection_Allocator - allocator that used Standard::Allocate
  - NCollection_OccAllocator - allocator-wrapper that used OCC BaseAllocator objects
  - NCollection_IncAllocator - rework to increase performance
Standard:
  - Rework functionality to use different allocation libs
  - Implement basic of new way to wrap allocations tools
  - Define 4 ways to allocation (defines in configure stage)
 Additional changes:
  - Hash function uses std::hash functionality
   - size_t as a hash value
  - New HashUtils with Murmur and FVN hash algo for x32 and x64
  - Deprecated _0.cxx and .gxx DE classes reorganized
  - Create own utility for std memory
  - Update Standard_Transient to be more platform-independent
 Math TK changes:
  - math_Vector -> match_BaseVector<>
    - Buffer decreased to cash 32 elements instead of 512
2023-12-04 13:37:09 +00:00

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// Created on: 2014-03-31
// Created by: Kirill Gavrilov
// Copyright (c) 2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef NCollection_AlignedAllocator_HeaderFile
#define NCollection_AlignedAllocator_HeaderFile
#include <NCollection_BaseAllocator.hxx>
#include <Standard.hxx>
//! NCollection allocator with managed memory alignment capabilities.
class NCollection_AlignedAllocator : public NCollection_BaseAllocator
{
public:
//! Constructor. The alignment should be specified explicitly:
//! 16 bytes for SSE instructions
//! 32 bytes for AVX instructions
Standard_EXPORT NCollection_AlignedAllocator (const size_t theAlignment);
//! Allocate memory with given size. Returns NULL on failure.
Standard_EXPORT virtual void* Allocate (const size_t theSize) Standard_OVERRIDE;
//! Allocate memory with given size. Returns NULL on failure.
void* AllocateOptimal(const size_t theSize) Standard_OVERRIDE
{
return Allocate(theSize);
}
//! Free a previously allocated memory.
Standard_EXPORT virtual void Free (void* thePtr) Standard_OVERRIDE;
private:
NCollection_AlignedAllocator (const NCollection_AlignedAllocator& );
NCollection_AlignedAllocator& operator= (const NCollection_AlignedAllocator& );
protected:
size_t myAlignment; //!< alignment in bytes
public:
DEFINE_STANDARD_RTTIEXT(NCollection_AlignedAllocator,NCollection_BaseAllocator)
};
// Definition of HANDLE object using Standard_DefineHandle.hxx
DEFINE_STANDARD_HANDLE (NCollection_AlignedAllocator, NCollection_BaseAllocator)
#endif // NCollection_AlignedAllocator_HeaderFile