0029151: GCC 7.1 warnings "this statement may fall through" [-Wimplicit-fallthrough=]
[occt.git] / src / NCollection / NCollection_WinHeapAllocator.hxx
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09711f37 1// Created on: 2011-07-11
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.
9df7f429 15
16#ifndef NCollection_WinHeapAllocator_HeaderFile
17#define NCollection_WinHeapAllocator_HeaderFile
18
19#include <NCollection_BaseAllocator.hxx>
20
21//! This memory allocator creates dedicated heap for allocations.
22//! This technics available only on Windows platform
23//! (no alternative on Unix systems).
24//! It may be used to take control over memory fragmentation
25//! because on destruction ALL allocated memory will be released
26//! to the system.
27//!
28//! This allocator can also be created per each working thread
29//! hovewer it real multi-threading performance is dubious.
30//!
31//! Notice that this also means that existing pointers will be broken
32//! and you shoould control that allocator is alive along all objects
33//! allocated with him.
34class NCollection_WinHeapAllocator : public NCollection_BaseAllocator
35{
36public:
37
38 //! Main constructor
39 Standard_EXPORT NCollection_WinHeapAllocator (const size_t theInitSizeBytes = 0x80000);
40
41 //! Destructor
42 Standard_EXPORT virtual ~NCollection_WinHeapAllocator();
43
44 //! Allocate memory
79104795 45 Standard_EXPORT virtual void* Allocate (const Standard_Size theSize) Standard_OVERRIDE;
9df7f429 46
47 //! Release memory
79104795 48 Standard_EXPORT virtual void Free (void* theAddress) Standard_OVERRIDE;
9df7f429 49
50 // Declaration of CASCADE RTTI
92efcf78 51 DEFINE_STANDARD_RTTIEXT(NCollection_WinHeapAllocator,NCollection_BaseAllocator)
9df7f429 52
53private:
54 //! Copy constructor - prohibited
55 NCollection_WinHeapAllocator (const NCollection_WinHeapAllocator& );
56
57private:
58#if(defined(_WIN32) || defined(__WIN32__))
59 void* myHeapH;
60#endif
61 Standard_Boolean myToZeroMemory;
62
63};
64
65// Definition of HANDLE object using Standard_DefineHandle.hxx
66DEFINE_STANDARD_HANDLE (NCollection_WinHeapAllocator, NCollection_BaseAllocator)
67
68#endif //NCollection_WinHeapAllocator_HeaderFile