102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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* Copyright (c) 2001-2008
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2008
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* Oracle. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Id$
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*/
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#ifndef __STRINGPOOL_HPP
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#define __STRINGPOOL_HPP
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#include <xqilla/framework/XQillaExport.hpp>
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#include <xercesc/framework/MemoryManager.hpp>
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#include <memory>
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#include <cstring>
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//Added so xqilla will compile under CC on Solaris
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#include <string>
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// Added so xqilla will compile on SunOS 10 using STLPort
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#include <memory.h>
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class XQILLA_API StringPool
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{
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public:
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StringPool(XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *mm);
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~StringPool();
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/** Returns a copy of the given string */
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const XMLCh* getPooledString(const XMLCh *src);
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/** Returns a copy of the given string, with given length */
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const XMLCh* getPooledString(const XMLCh *src, unsigned int length);
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/** Returns a copy of the transcoding of the given string */
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const XMLCh* getPooledString(const char *src);
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unsigned int getCount() const { return _count; }
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unsigned int getHits() const { return _hits; }
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unsigned int getMisses() const { return _misses; }
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unsigned int getTooBig() const { return _toobig; }
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void dumpStatistics() const;
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private:
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StringPool(const StringPool&);
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StringPool &operator=(const StringPool&);
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static unsigned int hash(const XMLCh *v, unsigned int length);
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const XMLCh *replicate(const XMLCh *v, unsigned int length) const;
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void resize();
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class Bucket
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{
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public:
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Bucket(const XMLCh *v, unsigned int l, unsigned int h, Bucket *n)
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: value(v), length(l), hashValue(h), next(n) {}
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const XMLCh *value;
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unsigned int length;
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unsigned int hashValue;
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Bucket *next;
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};
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XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *_mm;
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Bucket **_bucketList;
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unsigned int _modulus;
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unsigned int _count;
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unsigned int _hits;
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unsigned int _misses;
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unsigned int _toobig;
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};
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inline unsigned int StringPool::hash(const XMLCh *v, unsigned int length)
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{
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unsigned int hashVal = 0;
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while(length) {
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hashVal += (hashVal * 37) + (hashVal >> 24) + (unsigned int)(*v);
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++v;
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--length;
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}
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return hashVal;
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}
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inline const XMLCh *StringPool::replicate(const XMLCh *v, unsigned int length) const
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{
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unsigned int size = length * sizeof(XMLCh);
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XMLCh *ret = (XMLCh*)_mm->allocate(size + sizeof(XMLCh));
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memcpy(ret, v, size);
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ret[length] = 0;
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return ret;
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}
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#endif
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