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// File: NCollection_HeapAllocator.cxx
// Created: 30.12.09 00:38
// Author: Alexander GRIGORIEV
// Copyright: Open Cascade 2009
#include <NCollection_HeapAllocator.hxx>
#include <Standard_OutOfMemory.hxx>
#include <Standard_Mutex.hxx>
#include <stdio.h>
#if defined(_MSC_VER)
# define FMT_SZ_Q "I"
#elif defined(__GNUC__)
# define FMT_SZ_Q "z"
#elif defined(_OCC64)
# define FMT_SZ_Q "l"
#else
# define FMT_SZ_Q ""
#endif
IMPLEMENT_STANDARD_HANDLE (NCollection_HeapAllocator, NCollection_BaseAllocator)
IMPLEMENT_STANDARD_RTTIEXT(NCollection_HeapAllocator, NCollection_BaseAllocator)
//=======================================================================
//function : Allocate
//purpose :
//=======================================================================
void * NCollection_HeapAllocator::Allocate (const Standard_Size theSize)
{
// the size is rounded up to word size.
const Standard_Size aRoundSize = (theSize + 3) & ~0x3;
void * pResult = malloc(aRoundSize);
if (!pResult) {
char buf[128];
sprintf (buf, "Failed to allocate %"FMT_SZ_Q"u bytes in global dynamic heap",theSize);
Standard_OutOfMemory::Raise(&buf[0]);
}
return pResult;
}
//=======================================================================
//function : Free
//purpose :
//=======================================================================
void NCollection_HeapAllocator::Free (void * anAddress)
{
if (anAddress) free(anAddress);
}
//=======================================================================
//function : GlobalHeapAllocator
//purpose :
//=======================================================================
const Handle_NCollection_HeapAllocator&
NCollection_HeapAllocator::GlobalHeapAllocator()
{
static Handle(NCollection_HeapAllocator) pAllocator;
if (pAllocator.IsNull()) {
static Standard_Mutex theMutex;
Standard_Mutex::Sentry aSentry (theMutex);
if (pAllocator.IsNull()) {
pAllocator = new NCollection_HeapAllocator;
}
}
return pAllocator;
}
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