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1 | // Created on: 22.07.11 |
2 | // Created by: Kirill GAVRILOV |
3 | // Copyright (c) 2002-2014 OPEN CASCADE SAS |
4 | // |
5 | // This file is part of Open CASCADE Technology software library. |
6 | // |
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 |
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. |
12 | // |
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 <NCollection_WinHeapAllocator.hxx> |
17 | #include <Standard_OutOfMemory.hxx> |
18 | |
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19 | IMPLEMENT_STANDARD_RTTIEXT(NCollection_WinHeapAllocator,NCollection_BaseAllocator) |
20 | |
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21 | #if(defined(_WIN32) || defined(__WIN32__)) |
22 | #include <windows.h> |
23 | #endif |
24 | |
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25 | //======================================================================= |
26 | //function : NCollection_WinHeapAllocator |
27 | //purpose : Main constructor |
28 | //======================================================================= |
29 | NCollection_WinHeapAllocator::NCollection_WinHeapAllocator |
30 | (const size_t theInitSizeBytes) |
31 | : NCollection_BaseAllocator(), |
32 | #if(defined(_WIN32) || defined(__WIN32__)) |
33 | myHeapH (HeapCreate (0, theInitSizeBytes, 0)), |
34 | #endif |
35 | myToZeroMemory (Standard_False) |
36 | { |
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37 | #if defined(_WIN32) && (_WIN32_WINNT >= 0x0501) |
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38 | // activate LHF to improve small size allocations |
39 | ULONG aHeapInfo = 2; |
40 | HeapSetInformation (myHeapH, HeapCompatibilityInformation, |
41 | &aHeapInfo, sizeof(aHeapInfo)); |
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42 | #else |
43 | (void )theInitSizeBytes; |
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44 | #endif |
45 | } |
46 | |
47 | //======================================================================= |
48 | //function : ~NCollection_WinHeapAllocator |
49 | //purpose : Destructor |
50 | //======================================================================= |
51 | NCollection_WinHeapAllocator::~NCollection_WinHeapAllocator() |
52 | { |
53 | #if(defined(_WIN32) || defined(__WIN32__)) |
54 | HeapDestroy (myHeapH); |
55 | #endif |
56 | } |
57 | |
58 | |
59 | //======================================================================= |
60 | //function : Allocate |
61 | //purpose : |
62 | //======================================================================= |
63 | void* NCollection_WinHeapAllocator::Allocate (const Standard_Size theSize) |
64 | { |
65 | // the size is rounded up to word size. |
66 | const Standard_Size aRoundSize = (theSize + 3) & ~0x3; |
67 | #if(defined(_WIN32) || defined(__WIN32__)) |
68 | void* aResult = HeapAlloc (myHeapH, myToZeroMemory ? HEAP_ZERO_MEMORY : 0, |
69 | aRoundSize); |
70 | #else |
71 | void* aResult = malloc (aRoundSize); |
72 | #endif |
73 | if (aResult == NULL) |
74 | { |
75 | char aBuf[128]; |
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76 | Sprintf (aBuf, "Failed to allocate %" PRIuPTR " bytes in local dynamic heap", theSize); |
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77 | throw Standard_OutOfMemory(aBuf); |
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78 | } |
79 | return aResult; |
80 | } |
81 | |
82 | //======================================================================= |
83 | //function : Free |
84 | //purpose : |
85 | //======================================================================= |
86 | void NCollection_WinHeapAllocator::Free (void* theAddress) |
87 | { |
88 | if (theAddress != NULL) |
89 | { |
90 | #if(defined(_WIN32) || defined(__WIN32__)) |
91 | HeapFree (myHeapH, 0, theAddress); |
92 | #else |
93 | free (theAddress); |
94 | #endif |
95 | } |
96 | } |