1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one
3  * or more contributor license agreements. See the NOTICE file
4  * distributed with this work for additional information
5  * regarding copyright ownership. The ASF licenses this file
6  * to you under the Apache License, Version 2.0 (the  "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *     http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 #if !defined(XERCESWRAPPERNAVIGATORALLOCATOR_INCLUDE_GUARD_12455133)
20 #define XERCESWRAPPERNAVIGATORALLOCATOR_INCLUDE_GUARD_12455133
21 
22 
23 
24 #include <xalanc/XercesParserLiaison/XercesParserLiaisonDefinitions.hpp>
25 
26 
27 
28 #include <xalanc/PlatformSupport/ArenaAllocator.hpp>
29 
30 
31 
32 #include <xalanc/XercesParserLiaison/XercesWrapperNavigator.hpp>
33 
34 
35 
36 namespace XALAN_CPP_NAMESPACE {
37 
38 
39 
40 class XALAN_XERCESPARSERLIAISON_EXPORT XercesWrapperNavigatorAllocator
41 {
42 public:
43 
44     typedef XercesWrapperNavigator                  ObjectType;
45 
46 #if defined(XALAN_NO_DEFAULT_TEMPLATE_ARGUMENTS)
47     typedef ArenaBlock<ObjectType>                  ArenaBlockType;
48 
49     typedef ArenaAllocator<ObjectType,
50                            ArenaBlockType>          ArenaAllocatorType;
51 #else
52     typedef ArenaAllocator<ObjectType>              ArenaAllocatorType;
53 #endif
54 
55     typedef ArenaAllocatorType::size_type           size_type;
56 
57     /**
58      * Construct an instance that will allocate blocks of the specified size.
59      *
60      * @param theBlockSize The block size.
61      */
62     XercesWrapperNavigatorAllocator(MemoryManager&  theManager,
63                                         size_type       theBlockCount);
64 
65     ~XercesWrapperNavigatorAllocator();
66 
67     /**
68      * Create a XercesWrapperNavigator instance.
69      *
70      * @param theOwnerDocument The XercesDocumentWrappter instance for this instance.
71      *
72      * @return pointer to the instance
73      */
74     ObjectType*
75     create(XercesDocumentWrapper*   theOwnerDocument);
76 
77     /**
78      * Delete all objects from allocator.
79      */
80     void
81     reset();
82 
83     /**
84      * Get size of an ArenaBlock, that is, the number
85      * of objects in each block.
86      *
87      * @return The size of the block
88      */
89     size_type
getBlockCount() const90     getBlockCount() const
91     {
92         return m_allocator.getBlockCount();
93     }
94 
95     /**
96      * Get the number of ArenaBlocks currently allocated.
97      *
98      * @return The number of blocks.
99      */
100     size_type
getBlockSize() const101     getBlockSize() const
102     {
103         return m_allocator.getBlockSize();
104     }
105 
106 private:
107 
108     // Not implemented...
109     XercesWrapperNavigatorAllocator(const XercesWrapperNavigatorAllocator&);
110 
111     XercesWrapperNavigatorAllocator&
112     operator=(const XercesWrapperNavigatorAllocator&);
113 
114     // Data members...
115     ArenaAllocatorType  m_allocator;
116 };
117 
118 
119 
120 }
121 
122 
123 
124 #endif  // XERCESWRAPPERNAVIGATORALLOCATOR_INCLUDE_GUARD_12455133
125