domdeepnodelistpool.c

基于属性证书的访问控制源代码,由c++编写,包括openssl,xercesc等

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001-2002 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.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation, and was
 * originally based on software copyright (c) 2001, International
 * Business Machines, Inc., http://www.ibm.com .  For more information
 * on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/**
 * $Id: DOMDeepNodeListPool.c,v 1.9 2003/12/17 00:18:33 cargilld Exp $
 */


// ---------------------------------------------------------------------------
//  Include
// ---------------------------------------------------------------------------
#include <xercesc/util/XercesDefs.hpp>
#if defined(XERCES_TMPLSINC)
#include <xercesc/dom/impl/DOMDeepNodeListPool.hpp>
#endif

XERCES_CPP_NAMESPACE_BEGIN



// ---------------------------------------------------------------------------
//  DOMDeepNodeListPool: Constructors and Destructor
// ---------------------------------------------------------------------------
template <class TVal>
DOMDeepNodeListPool<TVal>::DOMDeepNodeListPool( const XMLSize_t modulus
                                              , const bool adoptElems
                                              , const XMLSize_t initSize) :
	 fAdoptedElems(adoptElems)
    , fBucketList(0)
    , fHashModulus(modulus)
    , fHash(0)
    , fIdPtrs(0)
    , fIdPtrsCount(initSize)
    , fIdCounter(0)
    , fMemoryManager(XMLPlatformUtils::fgMemoryManager)
{
    initialize(modulus);

    // create default hasher
#if defined (XML_GCC_VERSION) && (XML_GCC_VERSION < 29600)
    fHash = new HashPtr();
#else
    fHash = new (fMemoryManager) HashPtr();
#endif
    //
    //  Allocate the initial id pointers array. We don't have to zero them
    //  out since the fIdCounter value tells us which ones are valid. The
    //  zeroth element is never used (and represents an invalid pool id.)
    //
    if (!fIdPtrsCount)
        fIdPtrsCount = 256;

    fIdPtrs = (TVal**) fMemoryManager->allocate(fIdPtrsCount * sizeof(TVal*));//new TVal*[fIdPtrsCount];
    fIdPtrs[0] = 0;
}

template <class TVal>
DOMDeepNodeListPool<TVal>::DOMDeepNodeListPool( const XMLSize_t modulus
                                              , const bool adoptElems
                                              , HashBase* hash
                                              , const XMLSize_t initSize) :
	 fAdoptedElems(adoptElems)
    , fBucketList(0)
    , fHashModulus(modulus)
    , fHash(0)
    , fIdPtrs(0)
    , fIdPtrsCount(initSize)
    , fIdCounter(0)
    , fMemoryManager(XMLPlatformUtils::fgMemoryManager)
{
    initialize(modulus);
    // set hasher
    fHash = hash;

    //
    //  Allocate the initial id pointers array. We don't have to zero them
    //  out since the fIdCounter value tells us which ones are valid. The
    //  zeroth element is never used (and represents an invalid pool id.)
    //
    if (!fIdPtrsCount)
        fIdPtrsCount = 256;

    fIdPtrs = (TVal**) fMemoryManager->allocate(fIdPtrsCount * sizeof(TVal*));//new TVal*[fIdPtrsCount];
    fIdPtrs[0] = 0;
}

template <class TVal>
DOMDeepNodeListPool<TVal>::DOMDeepNodeListPool( const XMLSize_t modulus
                                              , const XMLSize_t initSize) :
	 fAdoptedElems(true)
    , fBucketList(0)
    , fHashModulus(modulus)
    , fHash(0)
    , fIdPtrs(0)
    , fIdPtrsCount(initSize)
    , fIdCounter(0)
    , fMemoryManager(XMLPlatformUtils::fgMemoryManager)
{
    initialize(modulus);

    // create default hasher
    fHash = new (fMemoryManager) HashPtr();

    //
    //  Allocate the initial id pointers array. We don't have to zero them
    //  out since the fIdCounter value tells us which ones are valid. The
    //  zeroth element is never used (and represents an invalid pool id.)
    //
    if (!fIdPtrsCount)
        fIdPtrsCount = 256;

    fIdPtrs = (TVal**) fMemoryManager->allocate(fIdPtrsCount * sizeof(TVal*));//new TVal*[fIdPtrsCount];
    fIdPtrs[0] = 0;
}

template <class TVal>
void DOMDeepNodeListPool<TVal>::initialize(const XMLSize_t modulus)
{
	if (modulus == 0)
        ThrowXMLwithMemMgr(IllegalArgumentException, XMLExcepts::HshTbl_ZeroModulus, fMemoryManager);

    // Allocate the bucket list and zero them
    fBucketList = (DOMDeepNodeListPoolTableBucketElem<TVal>**)
        fMemoryManager->allocate
        (
            fHashModulus * sizeof(DOMDeepNodeListPoolTableBucketElem<TVal>*)
        );//new DOMDeepNodeListPoolTableBucketElem<TVal>*[fHashModulus];
    for (XMLSize_t index = 0; index < fHashModulus; index++)
        fBucketList[index] = 0;
}

template <class TVal> DOMDeepNodeListPool<TVal>::~DOMDeepNodeListPool()
{
    removeAll();

    // Then delete the bucket list & hasher & id pointers list
    fMemoryManager->deallocate(fIdPtrs);//delete [] fIdPtrs;
    fMemoryManager->deallocate(fBucketList);//delete [] fBucketList;
    delete fHash;
}


// ---------------------------------------------------------------------------
//  DOMDeepNodeListPool: Element management
// ---------------------------------------------------------------------------
template <class TVal>
bool DOMDeepNodeListPool<TVal>::isEmpty() const
{
    // Just check the bucket list for non-empty elements
    for (XMLSize_t buckInd = 0; buckInd < fHashModulus; buckInd++)
    {
        if (fBucketList[buckInd] != 0)
            return false;
    }
    return true;
}

template <class TVal>
bool DOMDeepNodeListPool<TVal>::containsKey( const void* const key1
                                           , const XMLCh* const key2
                                           , const XMLCh* const key3) const
{
    XMLSize_t hashVal;
    const DOMDeepNodeListPoolTableBucketElem<TVal>* findIt = findBucketElem(key1, key2, key3, hashVal);
    return (findIt != 0);
}

template <class TVal>
void DOMDeepNodeListPool<TVal>::removeAll()
{
    // Clean up the buckets first
    for (XMLSize_t buckInd = 0; buckInd < fHashModulus; buckInd++)
    {
        // Get the bucket list head for this entry
        DOMDeepNodeListPoolTableBucketElem<TVal>* curElem = fBucketList[buckInd];
        DOMDeepNodeListPoolTableBucketElem<TVal>* nextElem;
        while (curElem)
        {
            // Save the next element before we hose this one
            nextElem = curElem->fNext;

            // If we adopted the data, then delete it too
            //    (Note:  the userdata hash table instance has data type of void *.
            //    This will generate compiler warnings here on some platforms, but they