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69 lines
2.4 KiB
C++
Executable File
69 lines
2.4 KiB
C++
Executable File
// File: Standard_MMgrRaw.cxx
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// Created: Tue Mar 15 12:09:38 2005
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// Author: Peter KURNEV
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// <pkv@irinox>
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#include <Standard_MMgrRaw.hxx>
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#include <Standard_OutOfMemory.hxx>
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#include <stdlib.h>
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//=======================================================================
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//function : Standard_MMgrRaw
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//purpose :
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//=======================================================================
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Standard_MMgrRaw::Standard_MMgrRaw(const Standard_Boolean aClear)
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{
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myClear = aClear;
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}
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//=======================================================================
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//function : Allocate
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//purpose :
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//=======================================================================
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Standard_Address Standard_MMgrRaw::Allocate(const Standard_Size aSize)
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{
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// the size is rounded up to 4 since some OCC classes
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// (e.g. TCollection_AsciiString) assume memory to be double word-aligned
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const Standard_Size aRoundSize = (aSize + 3) & ~0x3;
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// we use ?: operator instead of if() since it is faster :-)
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Standard_Address aPtr = ( myClear ? calloc(aRoundSize, sizeof(char)) :
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malloc(aRoundSize) );
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if ( ! aPtr )
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Standard_OutOfMemory::Raise("Standard_MMgrRaw::Allocate(): malloc failed");
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return aPtr;
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}
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//=======================================================================
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//function : Free
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//purpose :
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//=======================================================================
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void Standard_MMgrRaw::Free(Standard_Address& aStorage)
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{
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free(aStorage);
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aStorage=NULL;
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}
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//=======================================================================
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//function : Reallocate
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//purpose :
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//=======================================================================
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Standard_Address Standard_MMgrRaw::Reallocate(Standard_Address& aStorage,
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const Standard_Size newSize)
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{
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// the size is rounded up to 4 since some OCC classes
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// (e.g. TCollection_AsciiString) assume memory to be double word-aligned
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const Standard_Size aRoundSize = (newSize + 3) & ~0x3;
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Standard_Address newStorage = (Standard_Address)realloc(aStorage, aRoundSize);
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if ( ! newStorage )
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Standard_OutOfMemory::Raise("Standard_MMgrRaw::Reallocate(): realloc failed");
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// Note that it is not possible to ensure that additional memory
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// allocated by realloc will be cleared (so as to satisfy myClear mode);
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// in order to do that we would need using memset...
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aStorage = NULL;
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return newStorage;
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}
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