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1 | // Created on: 2009-12-30 |
2 | // Created by: Alexander GRIGORIEV |
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3 | // Copyright (c) 2009-2014 OPEN CASCADE SAS |
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4 | // |
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5 | // This file is part of Open CASCADE Technology software library. |
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6 | // |
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7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
11 | // distribution for complete text of the license and disclaimer of any warranty. |
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12 | // |
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13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. |
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15 | |
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16 | #include <NCollection_HeapAllocator.hxx> |
17 | #include <Standard_OutOfMemory.hxx> |
18 | #include <Standard_Mutex.hxx> |
19 | |
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20 | |
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21 | IMPLEMENT_STANDARD_RTTIEXT(NCollection_HeapAllocator,NCollection_BaseAllocator) |
22 | |
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23 | //======================================================================= |
24 | //function : Allocate |
25 | //purpose : |
26 | //======================================================================= |
27 | |
28 | void * NCollection_HeapAllocator::Allocate (const Standard_Size theSize) |
29 | { |
30 | // the size is rounded up to word size. |
31 | const Standard_Size aRoundSize = (theSize + 3) & ~0x3; |
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32 | void* aResult = malloc (aRoundSize); |
33 | if (aResult == NULL) |
34 | { |
35 | char aBuffer[96]; |
36 | Sprintf (aBuffer, "Failed to allocate %" PRIuPTR " bytes in global dynamic heap", theSize); |
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37 | throw Standard_OutOfMemory(aBuffer); |
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38 | } |
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39 | return aResult; |
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40 | } |
41 | |
42 | //======================================================================= |
43 | //function : Free |
44 | //purpose : |
45 | //======================================================================= |
46 | |
47 | void NCollection_HeapAllocator::Free (void * anAddress) |
48 | { |
49 | if (anAddress) free(anAddress); |
50 | } |
51 | |
52 | //======================================================================= |
53 | //function : GlobalHeapAllocator |
54 | //purpose : |
55 | //======================================================================= |
56 | |
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57 | const Handle(NCollection_HeapAllocator)& |
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58 | NCollection_HeapAllocator::GlobalHeapAllocator() |
59 | { |
60 | static Handle(NCollection_HeapAllocator) pAllocator; |
61 | if (pAllocator.IsNull()) { |
62 | static Standard_Mutex theMutex; |
63 | Standard_Mutex::Sentry aSentry (theMutex); |
64 | if (pAllocator.IsNull()) { |
65 | pAllocator = new NCollection_HeapAllocator; |
66 | } |
67 | } |
68 | return pAllocator; |
69 | } |