source: icXML/icXML-devel/src/xercesc/util/SynchronizedStringPool.hpp @ 2732

Last change on this file since 2732 was 2722, checked in by cameron, 7 years ago

Original Xerces files with import mods for icxercesc

File size: 3.4 KB
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[2722]1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18/*
19 * $Id: SynchronizedStringPool.hpp 527149 2007-04-10 14:56:39Z amassari $
20 */
21
22#if !defined(XERCESC_INCLUDE_GUARD_SYNCHRONIZEDSTRINGPOOL_HPP)
23#define XERCESC_INCLUDE_GUARD_SYNCHRONIZEDSTRINGPOOL_HPP
24
25#include <xercesc/framework/MemoryManager.hpp>
26#include <xercesc/util/StringPool.hpp>
27#include <xercesc/util/Mutexes.hpp>
28
29XERCES_CPP_NAMESPACE_BEGIN
30
31//
32//  This class provides a synchronized string pool implementation.
33//  This will necessarily be slower than the regular XMLStringPool, so it
34//  should only be used when updates need to be made in a thread-safe
35//  way.  Updates will be made on datastructures local to this object;
36//  all queries that don't involve mutation will first be directed at
37//  the XMLStringPool implementation with which this object is
38//  constructed.
39class XMLUTIL_EXPORT XMLSynchronizedStringPool : public XMLStringPool
40{
41public :
42    // -----------------------------------------------------------------------
43    //  Constructors and Destructor
44    // -----------------------------------------------------------------------
45    XMLSynchronizedStringPool
46    (
47        const XMLStringPool *  constPool
48        , const unsigned int   modulus = 109
49        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager
50    );
51    virtual ~XMLSynchronizedStringPool();
52
53
54    // -----------------------------------------------------------------------
55    //  Pool management methods
56    // -----------------------------------------------------------------------
57    virtual unsigned int addOrFind(const XMLCh* const newString);
58    virtual bool exists(const XMLCh* const newString) const;
59    virtual bool exists(const unsigned int id) const;
60    virtual void flushAll();
61    virtual unsigned int getId(const XMLCh* const toFind) const;
62    virtual const XMLCh* getValueForId(const unsigned int id) const;
63    virtual unsigned int getStringCount() const;
64
65
66private :
67    // -----------------------------------------------------------------------
68    //  Unimplemented constructors and operators
69    // -----------------------------------------------------------------------
70    XMLSynchronizedStringPool(const XMLSynchronizedStringPool&);
71    XMLSynchronizedStringPool& operator=(const XMLSynchronizedStringPool&);
72
73
74    // -----------------------------------------------------------------------
75    // private data members
76    //  fConstPool
77    //      the pool whose immutability we're protecting
78    // fMutex
79    //      mutex to permit synchronous updates of our StringPool
80    const XMLStringPool* fConstPool;
81    XMLMutex             fMutex;
82};
83
84XERCES_CPP_NAMESPACE_END
85
86#endif
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