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1 | // Created on: 2001-06-26 |
2 | // Created by: Alexander GRIGORIEV |
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3 | // Copyright (c) 2001-2014 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 | #ifndef LDOM_MemManager_HeaderFile |
17 | #define LDOM_MemManager_HeaderFile |
18 | |
19 | #include <MMgt_TShared.hxx> |
20 | #include <Standard_DefineHandle.hxx> |
21 | #include <LDOM_Document.hxx> |
22 | |
23 | class LDOM_BasicElement; |
24 | |
25 | // Class LDOM_MemManager (underlying structure of LDOM_Document) |
26 | // |
27 | |
28 | class LDOM_MemManager : public MMgt_TShared |
29 | { |
30 | public: |
31 | // ---------- PUBLIC METHODS ---------- |
32 | |
33 | Standard_EXPORT LDOM_MemManager (const Standard_Integer aBlockSize); |
34 | // Constructor |
35 | |
36 | Standard_EXPORT ~LDOM_MemManager (); |
37 | // Destructor |
38 | |
39 | Standard_EXPORT void * Allocate (const Standard_Integer aSize); |
40 | // General Memory allocator |
41 | |
42 | const char * HashedAllocate (const char * aString, |
43 | const Standard_Integer theLen, |
44 | Standard_Integer& theHash); |
45 | // Memory allocation with access via hash table. No new allocation |
46 | // if already present |
47 | |
48 | void HashedAllocate (const char * aString, |
49 | const Standard_Integer theLen, |
50 | LDOMBasicString& theResult); |
51 | // Memory allocation with access via hash table. No new allocation |
52 | // if already present |
53 | |
54 | static Standard_Integer Hash (const char * theString, |
55 | const Standard_Integer theLen) |
56 | { return HashTable::Hash (theString, theLen); } |
57 | |
58 | static Standard_Boolean CompareStrings(const char * theString, |
59 | const Standard_Integer theHashValue, |
60 | const char * theHashedStr); |
61 | |
62 | LDOM_Document Doc () const |
63 | { return LDOM_Document (* this); } |
64 | |
65 | const LDOM_MemManager& Self () const |
66 | { return * this; } |
67 | |
68 | const LDOM_BasicElement * RootElement () const |
69 | { return myRootElement; } |
70 | |
71 | private: |
72 | friend class LDOM_Document; |
73 | friend class LDOMParser; |
74 | |
75 | // ---- CLASS MemBlock ---- |
76 | class MemBlock { |
77 | friend class LDOM_MemManager; |
78 | inline MemBlock (const Standard_Integer aSize, MemBlock * aFirst); |
79 | inline void * Allocate (const Standard_Integer aSize); |
80 | void * AllocateAndCheck (const Standard_Integer aSize, const MemBlock *&); |
81 | ~MemBlock (); |
82 | MemBlock * Next () { return myNext; } |
83 | |
84 | Standard_Integer mySize; |
85 | Standard_Integer * myBlock; |
86 | Standard_Integer * myEndBlock; |
87 | Standard_Integer * myFreeSpace; |
88 | MemBlock * myNext; |
89 | }; |
90 | |
91 | // ---- CLASS HashTable ---- |
92 | class HashTable { |
93 | friend class LDOM_MemManager; |
94 | HashTable (/* const Standard_Integer theMask, */ |
95 | LDOM_MemManager& theMemManager); |
96 | const char * AddString (const char * theString, |
97 | const Standard_Integer theLen, |
98 | Standard_Integer& theHashIndex); |
99 | static Standard_Integer Hash(const char * theString, |
100 | const Standard_Integer theLen); |
101 | struct TableItem { |
102 | char * str; |
103 | struct TableItem * next; |
104 | } * myTable; |
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105 | LDOM_MemManager& myManager; |
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106 | void operator= (const HashTable&); |
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107 | }; |
108 | |
109 | // ---- PROHIBITED (PRIVATE) METHODS ---- |
110 | LDOM_MemManager (const LDOM_MemManager& theOther); |
111 | // Copy constructor |
112 | |
113 | LDOM_MemManager& operator = (const LDOM_MemManager& theOther); |
114 | // Assignment |
115 | |
116 | // ---------- PRIVATE FIELDS ---------- |
117 | |
118 | const LDOM_BasicElement * myRootElement; |
119 | MemBlock * myFirstBlock; |
120 | MemBlock * myFirstWithoutRoom; |
121 | Standard_Integer myBlockSize; |
122 | HashTable * myHashTable; |
123 | |
124 | public: |
125 | // CASCADE RTTI |
126 | DEFINE_STANDARD_RTTI (LDOM_MemManager) |
127 | }; |
128 | |
129 | #include <Handle_LDOM_MemManager.hxx> |
130 | |
131 | #endif |