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0025261: NCollection, set of improvements

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The following improvements were implemented:
* two additional allocators were introduced
  * Allocator which used WinHeap
  * Accumulating memory allocator
* Access to Allocators in lists are provided
* Access optimization in data map (seek and find functions returning reference or pointer to value in one shot)

Warning fixed
This commit is contained in:
pdn
2014-10-02 16:00:36 +04:00
committed by bugmaster
parent 848fa7e315
commit 9df7f42944
7 changed files with 601 additions and 51 deletions
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87
src/NCollection/NCollection_WinHeapAllocator.cxx Normal file
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// File: NCollection_WinHeapAllocator.cxx
// Created: 22.07.11
// Author: Kirill GAVRILOV
// Copyright: Open Cascade 2011
#include <NCollection_WinHeapAllocator.hxx>
#include <Standard_OutOfMemory.hxx>
#if(defined(_WIN32) || defined(__WIN32__))
#include <windows.h>
#endif
IMPLEMENT_STANDARD_HANDLE (NCollection_WinHeapAllocator,
NCollection_BaseAllocator)
IMPLEMENT_STANDARD_RTTIEXT(NCollection_WinHeapAllocator,
NCollection_BaseAllocator)
//=======================================================================
//function : NCollection_WinHeapAllocator
//purpose : Main constructor
//=======================================================================
NCollection_WinHeapAllocator::NCollection_WinHeapAllocator
(const size_t theInitSizeBytes)
: NCollection_BaseAllocator(),
#if(defined(_WIN32) || defined(__WIN32__))
myHeapH (HeapCreate (0, theInitSizeBytes, 0)),
#endif
myToZeroMemory (Standard_False)
{
#if(defined(_WIN32) || defined(__WIN32__))
// activate LHF to improve small size allocations
ULONG aHeapInfo = 2;
HeapSetInformation (myHeapH, HeapCompatibilityInformation,
&aHeapInfo, sizeof(aHeapInfo));
#endif
}
//=======================================================================
//function : ~NCollection_WinHeapAllocator
//purpose : Destructor
//=======================================================================
NCollection_WinHeapAllocator::~NCollection_WinHeapAllocator()
{
#if(defined(_WIN32) || defined(__WIN32__))
HeapDestroy (myHeapH);
#endif
}
//=======================================================================
//function : Allocate
//purpose :
//=======================================================================
void* NCollection_WinHeapAllocator::Allocate (const Standard_Size theSize)
{
// the size is rounded up to word size.
const Standard_Size aRoundSize = (theSize + 3) & ~0x3;
#if(defined(_WIN32) || defined(__WIN32__))
void* aResult = HeapAlloc (myHeapH, myToZeroMemory ? HEAP_ZERO_MEMORY : 0,
aRoundSize);
#else
void* aResult = malloc (aRoundSize);
#endif
if (aResult == NULL)
{
char aBuf[128];
Sprintf (aBuf, "Failed to allocate "PRIuPTR" bytes in local dynamic heap", theSize);
Standard_OutOfMemory::Raise (aBuf);
}
return aResult;
}
//=======================================================================
//function : Free
//purpose :
//=======================================================================
void NCollection_WinHeapAllocator::Free (void* theAddress)
{
if (theAddress != NULL)
{
#if(defined(_WIN32) || defined(__WIN32__))
HeapFree (myHeapH, 0, theAddress);
#else
free (theAddress);
#endif
}
}