00001 #ifndef DOMStringImpl_HEADER_GUARD_ 00002 #define DOMStringImpl_HEADER_GUARD_ 00003 00004 /* 00005 * The Apache Software License, Version 1.1 00006 * 00007 * Copyright (c) 1999-2000 The Apache Software Foundation. All rights 00008 * reserved. 00009 * 00010 * Redistribution and use in source and binary forms, with or without 00011 * modification, are permitted provided that the following conditions 00012 * are met: 00013 * 00014 * 1. Redistributions of source code must retain the above copyright 00015 * notice, this list of conditions and the following disclaimer. 00016 * 00017 * 2. Redistributions in binary form must reproduce the above copyright 00018 * notice, this list of conditions and the following disclaimer in 00019 * the documentation and/or other materials provided with the 00020 * distribution. 00021 * 00022 * 3. The end-user documentation included with the redistribution, 00023 * if any, must include the following acknowledgment: 00024 * "This product includes software developed by the 00025 * Apache Software Foundation (http://www.apache.org/)." 00026 * Alternately, this acknowledgment may appear in the software itself, 00027 * if and wherever such third-party acknowledgments normally appear. 00028 * 00029 * 4. The names "Xerces" and "Apache Software Foundation" must 00030 * not be used to endorse or promote products derived from this 00031 * software without prior written permission. For written 00032 * permission, please contact apache\@apache.org. 00033 * 00034 * 5. Products derived from this software may not be called "Apache", 00035 * nor may "Apache" appear in their name, without prior written 00036 * permission of the Apache Software Foundation. 00037 * 00038 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00039 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00040 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00041 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00042 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00043 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00044 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00045 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00046 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00047 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00048 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00049 * SUCH DAMAGE. 00050 * ==================================================================== 00051 * 00052 * This software consists of voluntary contributions made by many 00053 * individuals on behalf of the Apache Software Foundation, and was 00054 * originally based on software copyright (c) 1999, International 00055 * Business Machines, Inc., http://www.ibm.com . For more information 00056 * on the Apache Software Foundation, please see 00057 * <http://www.apache.org/>. 00058 */ 00059 00060 /* 00061 * $Log: DOMStringImpl.hpp,v $ 00062 * Revision 1.1 2002/05/11 19:46:39 bhavani 00063 * CR#CR062582# adding xercesc 1.7 file 00064 * 00065 * Revision 1.1.1.1 2002/02/01 22:21:44 peiyongz 00066 * sane_include 00067 * 00068 * Revision 1.8 2000/05/09 00:22:30 andyh 00069 * Memory Cleanup. XMLPlatformUtils::Terminate() deletes all lazily 00070 * allocated memory; memory leak checking tools will no longer report 00071 * that leaks exist. (DOM GetElementsByTagID temporarily removed 00072 * as part of this.) 00073 * 00074 * Revision 1.7 2000/03/02 19:53:52 roddey 00075 * This checkin includes many changes done while waiting for the 00076 * 1.1.0 code to be finished. I can't list them all here, but a list is 00077 * available elsewhere. 00078 * 00079 * Revision 1.6 2000/02/24 20:11:27 abagchi 00080 * Swat for removing Log from API docs 00081 * 00082 * Revision 1.5 2000/02/06 07:47:27 rahulj 00083 * Year 2K copyright swat. 00084 * 00085 * Revision 1.4 2000/02/04 05:46:31 andyh 00086 * Change offsets and lengths form signed to unsigned 00087 * 00088 * Revision 1.3 2000/01/29 00:39:08 andyh 00089 * Redo synchronization in DOMStringHandle allocator. There 00090 * was a bug in the use of Compare and Swap. Switched to mutexes. 00091 * 00092 * Changed a few plain deletes to delete []. 00093 * 00094 * Revision 1.2 2000/01/12 19:55:14 aruna1 00095 * Included header for size_t 00096 * 00097 * Revision 1.1 2000/01/05 22:16:26 robweir 00098 * Move DOMString implementation class declarations into a new 00099 * file: DOMStringImpl.hpp. Include this header in DOMString.hpp 00100 * for XML_DEBUG builds so the underlying character array will be 00101 * visible in the debugger. <robert_weir@lotus.com> 00102 * 00103 * 00104 */ 00105 00106 00107 // 00108 // This file is part of the internal implementation of the C++ XML DOM. 00109 // It should NOT be included or used directly by application programs. 00110 // 00111 00112 00113 #include <xercesc/util/XercesDefs.hpp> 00114 #include <xercesc/util/Mutexes.hpp> 00115 #include <stdio.h> 00116 00117 00118 class DOMStringData 00119 { 00120 public: 00121 unsigned int fBufferLength; 00122 int fRefCount; 00123 XMLCh fData[1]; 00124 00125 static DOMStringData *allocateBuffer(unsigned int length); 00126 inline void addRef(); 00127 inline void removeRef(); 00128 }; 00129 00130 class DOMStringHandle 00131 { 00132 public: 00133 unsigned int fLength; // The logical length of the DOMString. 00134 // This may be shorter than the buffer length. 00135 int fRefCount; // The number of DOMString objects pointing to 00136 // this string handle. 00137 DOMStringData *fDSData; // Pointer to the string buffer. May be null. 00138 00139 void *operator new( size_t sizeToAlloc); // StringHandles have custom, optimized 00140 void operator delete( void *pvMem ); // memory allocation. 00141 00142 00143 private: 00144 static void *freeListPtr; // Head of the linked list of unallocated String Handles 00145 00146 static DOMStringHandle *blockListPtr; // Head of the linked list of memory blocks from which 00147 // string handles are sub-allocated. 00148 00149 public: 00150 static DOMStringHandle *createNewStringHandle(unsigned int bufLength); 00151 DOMStringHandle *cloneStringHandle(); 00152 inline void addRef(); 00153 inline void removeRef(); 00154 ~DOMStringHandle() {}; 00155 static void DOMStringCleanup(); 00156 private: 00157 inline DOMStringHandle() {}; 00158 static inline XMLMutex &getMutex(); 00159 }; 00160 00161 00162 #endif 00163