00001 /* 00002 * Licensed to the Apache Software Foundation (ASF) under one 00003 * or more contributor license agreements. See the NOTICE file 00004 * distributed with this work for additional information 00005 * regarding copyright ownership. The ASF licenses this file 00006 * to you under the Apache License, Version 2.0 (the "License"); 00007 * you may not use this file except in compliance with the License. 00008 * You may obtain a copy of the License at 00009 * 00010 * http://www.apache.org/licenses/LICENSE-2.0 00011 * 00012 * Unless required by applicable law or agreed to in writing, software 00013 * distributed under the License is distributed on an "AS IS" BASIS, 00014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00015 * See the License for the specific language governing permissions and 00016 * limitations under the License. 00017 */ 00018 00019 #if !defined(XALANAVTPARTXPATHALLOCATOR_INCLUDE_GUARD_12455133) 00020 #define XALANAVTPARTXPATHALLOCATOR_INCLUDE_GUARD_12455133 00021 00022 00023 00024 // Base include file. Must be first. 00025 #include <xalanc/XSLT/XSLTDefinitions.hpp> 00026 00027 00028 00029 #include <xalanc/XSLT/AVTPartXPath.hpp> 00030 00031 00032 00033 #include <xalanc/PlatformSupport/ArenaAllocator.hpp> 00034 00035 00036 00037 XALAN_CPP_NAMESPACE_BEGIN 00038 00039 00040 00041 class XALAN_XSLT_EXPORT XalanAVTPartXPathAllocator 00042 { 00043 public: 00044 00045 typedef AVTPartXPath data_type; 00046 00047 #if defined(XALAN_NO_DEFAULT_TEMPLATE_ARGUMENTS) 00048 typedef ArenaBlock<data_type> ArenaBlockType; 00049 typedef ArenaAllocator<data_type, 00050 ArenaBlockType> ArenaAllocatorType; 00051 #else 00052 typedef ArenaAllocator<data_type> ArenaAllocatorType; 00053 #endif 00054 00055 typedef ArenaAllocatorType::size_type size_type; 00056 00057 /** 00058 * Construct an instance that will allocate blocks of the specified size. 00059 * 00060 * @param theBlockSize The block size. 00061 */ 00062 XalanAVTPartXPathAllocator(MemoryManager& theManager, size_type theBlockCount); 00063 00064 ~XalanAVTPartXPathAllocator(); 00065 00066 /** 00067 * Create an instance. 00068 * 00069 * @param xpath XPath to evaluate 00070 * 00071 * @return A pointer to the new instance. 00072 */ 00073 data_type* 00074 create(const XPath* xpath); 00075 00076 /** 00077 * Determine if an object is owned by the allocator... 00078 */ 00079 bool 00080 ownsObject(const data_type* theObject) 00081 { 00082 return m_allocator.ownsObject(theObject); 00083 } 00084 00085 /** 00086 * Delete all objects from the allocator. 00087 */ 00088 void 00089 reset() 00090 { 00091 m_allocator.reset(); 00092 } 00093 00094 /** 00095 * Get the number of ArenaBlocks currently allocated. 00096 * 00097 * @return The number of blocks. 00098 */ 00099 size_type 00100 getBlockCount() const 00101 { 00102 return m_allocator.getBlockCount(); 00103 } 00104 00105 /** 00106 * Get size of an ArenaBlock, that is, the number 00107 * of objects in each block. 00108 * 00109 * @return The size of the block 00110 */ 00111 size_type 00112 getBlockSize() const 00113 { 00114 return m_allocator.getBlockSize(); 00115 } 00116 00117 private: 00118 00119 // Not implemented... 00120 XalanAVTPartXPathAllocator(const XalanAVTPartXPathAllocator&); 00121 00122 XalanAVTPartXPathAllocator& 00123 operator=(const XalanAVTPartXPathAllocator&); 00124 00125 // Data members... 00126 ArenaAllocatorType m_allocator; 00127 }; 00128 00129 00130 00131 XALAN_CPP_NAMESPACE_END 00132 00133 00134 00135 #endif // XALANAVTPARTXPATHALLOCATOR_INCLUDE_GUARD_12455133
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