SynchronizedStringPool.hpp
Go to the documentation of this file.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: SynchronizedStringPool.hpp 527149 2007-04-10 14:56:39Z amassari $
*/
#if !defined(XERCESC_INCLUDE_GUARD_SYNCHRONIZEDSTRINGPOOL_HPP)
#define XERCESC_INCLUDE_GUARD_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 XMLStringPool, 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 XMLStringPool implementation with which this object is
// constructed.
class XMLUTIL_EXPORT 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
XMLPlatformUtils::fgMemoryManager
static MemoryManager * fgMemoryManager
The configurable memory manager.
Definition: PlatformUtils.hpp:121
MemoryManager.hpp
MemoryManager
Configurable memory manager.
Definition: MemoryManager.hpp:39
XMLCh
uint16_t XMLCh
Definition: Xerces_autoconf_config.hpp:118
XERCES_CPP_NAMESPACE_BEGIN
#define XERCES_CPP_NAMESPACE_BEGIN
Definition: XercesDefs.hpp:112
XMLUTIL_EXPORT
#define XMLUTIL_EXPORT
Definition: XercesDefs.hpp:162
XERCES_CPP_NAMESPACE_END
#define XERCES_CPP_NAMESPACE_END
Definition: XercesDefs.hpp:113
XMLSynchronizedStringPool
Definition: SynchronizedStringPool.hpp:39