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1 | // Created on: 2005-03-15 |
2 | // Created by: Peter KURNEV |
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3 | // Copyright (c) 2005-2014 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 | |
16 | #include <Standard_MMgrRaw.hxx> |
17 | #include <Standard_OutOfMemory.hxx> |
18 | #include <stdlib.h> |
19 | |
20 | //======================================================================= |
21 | //function : Standard_MMgrRaw |
22 | //purpose : |
23 | //======================================================================= |
24 | |
25 | Standard_MMgrRaw::Standard_MMgrRaw(const Standard_Boolean aClear) |
26 | { |
27 | myClear = aClear; |
28 | } |
29 | |
30 | //======================================================================= |
31 | //function : Allocate |
32 | //purpose : |
33 | //======================================================================= |
34 | |
35 | Standard_Address Standard_MMgrRaw::Allocate(const Standard_Size aSize) |
36 | { |
37 | // the size is rounded up to 4 since some OCC classes |
38 | // (e.g. TCollection_AsciiString) assume memory to be double word-aligned |
39 | const Standard_Size aRoundSize = (aSize + 3) & ~0x3; |
40 | // we use ?: operator instead of if() since it is faster :-) |
41 | Standard_Address aPtr = ( myClear ? calloc(aRoundSize, sizeof(char)) : |
42 | malloc(aRoundSize) ); |
43 | if ( ! aPtr ) |
44 | Standard_OutOfMemory::Raise("Standard_MMgrRaw::Allocate(): malloc failed"); |
45 | return aPtr; |
46 | } |
47 | |
48 | //======================================================================= |
49 | //function : Free |
50 | //purpose : |
51 | //======================================================================= |
52 | |
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53 | void Standard_MMgrRaw::Free(Standard_Address theStorage) |
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54 | { |
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55 | free(theStorage); |
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56 | } |
57 | |
58 | //======================================================================= |
59 | //function : Reallocate |
60 | //purpose : |
61 | //======================================================================= |
62 | |
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63 | Standard_Address Standard_MMgrRaw::Reallocate(Standard_Address theStorage, |
64 | const Standard_Size theSize) |
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65 | { |
66 | // the size is rounded up to 4 since some OCC classes |
67 | // (e.g. TCollection_AsciiString) assume memory to be double word-aligned |
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68 | const Standard_Size aRoundSize = (theSize + 3) & ~0x3; |
69 | Standard_Address newStorage = (Standard_Address)realloc(theStorage, aRoundSize); |
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70 | if ( ! newStorage ) |
71 | Standard_OutOfMemory::Raise("Standard_MMgrRaw::Reallocate(): realloc failed"); |
72 | // Note that it is not possible to ensure that additional memory |
73 | // allocated by realloc will be cleared (so as to satisfy myClear mode); |
74 | // in order to do that we would need using memset... |
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75 | return newStorage; |
76 | } |