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(XSTRINGREFERENCEALLOCATOR_INCLUDE_GUARD_1357924680) 00020 #define XSTRINGREFERENCEALLOCATOR_INCLUDE_GUARD_1357924680 00021 00022 00023 00024 // Base include file. Must be first. 00025 #include <xalanc/XPath/XPathDefinitions.hpp> 00026 00027 00028 00029 #include <xalanc/XPath/XStringReference.hpp> 00030 00031 00032 00033 #include <xalanc/PlatformSupport/ReusableArenaAllocator.hpp> 00034 00035 00036 00037 XALAN_CPP_NAMESPACE_BEGIN 00038 00039 00040 00041 class XALAN_XPATH_EXPORT XStringReferenceAllocator 00042 { 00043 public: 00044 00045 typedef XStringReference string_type; 00046 00047 typedef ReusableArenaAllocator<string_type> ArenaAllocatorType; 00048 typedef ArenaAllocatorType::size_type size_type; 00049 00050 /** 00051 * Construct an instance that will allocate blocks of the specified size. 00052 * 00053 * @param theBlockSize The block size. 00054 */ 00055 XStringReferenceAllocator( 00056 MemoryManager& theManager, 00057 size_type theBlockCount); 00058 00059 ~XStringReferenceAllocator(); 00060 00061 /** 00062 * Create an XStringReference object from a string. 00063 * 00064 * @param theString source string 00065 * 00066 * @return a pointer to string 00067 */ 00068 string_type* 00069 createString(const XalanDOMString& theString); 00070 00071 00072 /** 00073 * Delete an XStringReference object from allocator. 00074 */ 00075 bool 00076 destroy(string_type* theString); 00077 00078 /** 00079 * Determine if an object is owned by the allocator... 00080 */ 00081 bool 00082 ownsObject(const string_type* theObject) 00083 { 00084 return m_allocator.ownsObject(theObject); 00085 } 00086 00087 /** 00088 * Delete all XStringReference objects from allocator. 00089 */ 00090 void 00091 reset(); 00092 00093 /** 00094 * Get size of an ArenaBlock, that is, the number 00095 * of objects in each block. 00096 * 00097 * @return The size of the block 00098 */ 00099 size_type 00100 getBlockCount() const 00101 { 00102 return m_allocator.getBlockCount(); 00103 } 00104 00105 /** 00106 * Get the number of ArenaBlocks currently allocated. 00107 * 00108 * @return The number of blocks. 00109 */ 00110 size_type 00111 getBlockSize() const 00112 { 00113 return m_allocator.getBlockSize(); 00114 } 00115 00116 private: 00117 00118 // Not implemented... 00119 XStringReferenceAllocator(const XStringReferenceAllocator&); 00120 00121 XStringReferenceAllocator& 00122 operator=(const XStringReferenceAllocator&); 00123 00124 // Data members... 00125 ArenaAllocatorType m_allocator; 00126 }; 00127 00128 00129 00130 XALAN_CPP_NAMESPACE_END 00131 00132 00133 00134 #endif // XSTRINGREFERENCEALLOCATOR_INCLUDE_GUARD_1357924680
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