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4db4247a0b
Standard_OutOfMemory exception is refactored so as to avoid memory allocations (which will likely fail) when it is raised: - method NewInstance() returns static instance (singleton) - method Raise() raises copy of that singleton, resetting its message string - message string is stored as field, not allocated dynamically (thus maximum message length is limited by buffer size) Class Standard_Failure slightly revised: method Destroy() is merged to destructor, methods Get/SetMessageString() are made virtual. Add test case for the bug
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
// Created on: 22.07.11
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// Created by: Kirill GAVRILOV
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// Copyright (c) 2002-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <NCollection_WinHeapAllocator.hxx>
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#include <Standard_OutOfMemory.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(NCollection_WinHeapAllocator,NCollection_BaseAllocator)
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#if(defined(_WIN32) || defined(__WIN32__))
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#include <windows.h>
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#endif
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//=======================================================================
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//function : NCollection_WinHeapAllocator
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//purpose : Main constructor
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//=======================================================================
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NCollection_WinHeapAllocator::NCollection_WinHeapAllocator
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(const size_t theInitSizeBytes)
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: NCollection_BaseAllocator(),
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#if(defined(_WIN32) || defined(__WIN32__))
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myHeapH (HeapCreate (0, theInitSizeBytes, 0)),
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#endif
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myToZeroMemory (Standard_False)
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{
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#if(defined(_WIN32) || defined(__WIN32__))
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// activate LHF to improve small size allocations
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ULONG aHeapInfo = 2;
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HeapSetInformation (myHeapH, HeapCompatibilityInformation,
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&aHeapInfo, sizeof(aHeapInfo));
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#else
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(void )theInitSizeBytes;
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#endif
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}
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//=======================================================================
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//function : ~NCollection_WinHeapAllocator
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//purpose : Destructor
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//=======================================================================
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NCollection_WinHeapAllocator::~NCollection_WinHeapAllocator()
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{
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#if(defined(_WIN32) || defined(__WIN32__))
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HeapDestroy (myHeapH);
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#endif
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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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void* NCollection_WinHeapAllocator::Allocate (const Standard_Size theSize)
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{
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// the size is rounded up to word size.
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const Standard_Size aRoundSize = (theSize + 3) & ~0x3;
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#if(defined(_WIN32) || defined(__WIN32__))
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void* aResult = HeapAlloc (myHeapH, myToZeroMemory ? HEAP_ZERO_MEMORY : 0,
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aRoundSize);
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#else
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void* aResult = malloc (aRoundSize);
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#endif
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if (aResult == NULL)
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{
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char aBuf[128];
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Sprintf (aBuf, "Failed to allocate %" PRIuPTR " bytes in local dynamic heap", theSize);
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Standard_OutOfMemory::Raise (aBuf);
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}
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return aResult;
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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 NCollection_WinHeapAllocator::Free (void* theAddress)
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{
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if (theAddress != NULL)
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{
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#if(defined(_WIN32) || defined(__WIN32__))
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HeapFree (myHeapH, 0, theAddress);
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#else
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free (theAddress);
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#endif
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}
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}
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