API Docs for SAX and DOM                 SynchronizedStringPool.hpp Go to the documentation of this file. /* * The Apache Software License, Version 1.1 * * Copyright (c) 1999-2003 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. 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For more information * on the Apache Software Foundation, please see * <http://www.apache.org/>. */ /* * $Log: SynchronizedStringPool.hpp,v $ * Revision 1.1 2003/10/09 13:51:16 neilg * implementation of a StringPool implementation that permits thread-safe updates. This can now be used by a grammar pool that is locked so that scanners have somehwere to store information about newly-encountered URIs * */ #if !defined(SYNCHRONIZEDSTRINGPOOL_HPP) #define SYNCHRONIZEDSTRINGPOOL_HPP #include <xercesc/framework/MemoryManager.hpp> #include <xercesc/util/StringPool.hpp> #include <xercesc/util/Mutexes.hpp> XERCES_CPP_NAMESPACE_BEGIN // // This class provides a synchronized string pool implementation. // This will necessarily be slower than the regular StringPool, so it // should only be used when updates need to be made in a thread-safe // way. Updates will be made on datastructures local to this object; // all queries that don't involve mutation will first be directed at // the StringPool implementation with which this object is // constructed. class XMLSynchronizedStringPool : public XMLStringPool { public : // ----------------------------------------------------------------------- // Constructors and Destructor // ----------------------------------------------------------------------- XMLSynchronizedStringPool ( const XMLStringPool * constPool , const unsigned int modulus = 109 , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager ); virtual ~XMLSynchronizedStringPool(); // ----------------------------------------------------------------------- // Pool management methods // ----------------------------------------------------------------------- virtual unsigned int addOrFind(const XMLCh* const newString); virtual bool exists(const XMLCh* const newString) const; virtual bool exists(const unsigned int id) const; virtual void flushAll(); virtual unsigned int getId(const XMLCh* const toFind) const; virtual const XMLCh* getValueForId(const unsigned int id) const; virtual unsigned int getStringCount() const; private : // ----------------------------------------------------------------------- // Unimplemented constructors and operators // ----------------------------------------------------------------------- XMLSynchronizedStringPool(const XMLSynchronizedStringPool&); XMLSynchronizedStringPool& operator=(const XMLSynchronizedStringPool&); // ----------------------------------------------------------------------- // private data members // fConstPool // the pool whose immutability we're protecting // fMutex // mutex to permit synchronous updates of our StringPool const XMLStringPool* fConstPool; XMLMutex fMutex; }; XERCES_CPP_NAMESPACE_END #endif

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