XMLBufferMgr.cpp
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- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 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. 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.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * 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) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /**
- * $Log: XMLBufferMgr.cpp,v $
- * Revision 1.3 2003/05/15 18:26:07 knoaman
- * Partial implementation of the configurable memory manager.
- *
- * Revision 1.2 2002/11/04 15:00:21 tng
- * C++ Namespace Support.
- *
- * Revision 1.1.1.1 2002/02/01 22:21:51 peiyongz
- * sane_include
- *
- * Revision 1.4 2000/05/15 22:31:11 andyh
- * Replace #include<memory.h> with <string.h> everywhere.
- *
- * Revision 1.3 2000/03/02 19:54:24 roddey
- * This checkin includes many changes done while waiting for the
- * 1.1.0 code to be finished. I can't list them all here, but a list is
- * available elsewhere.
- *
- * Revision 1.2 2000/02/06 07:47:47 rahulj
- * Year 2K copyright swat.
- *
- * Revision 1.1.1.1 1999/11/09 01:08:30 twl
- * Initial checkin
- *
- * Revision 1.2 1999/11/08 20:44:36 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- //#include <string.h>
- #include <xercesc/framework/XMLBufferMgr.hpp>
- #include <xercesc/util/RuntimeException.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- // ---------------------------------------------------------------------------
- // Constructors and Destructor
- // ---------------------------------------------------------------------------
- XMLBufferMgr::XMLBufferMgr(MemoryManager* const manager) :
- fBufCount(32)
- , fMemoryManager(manager)
- , fBufList(0)
- {
- // Allocate the buffer list and zero it out
- fBufList = (XMLBuffer**) fMemoryManager->allocate(fBufCount * sizeof(XMLBuffer*)); // new XMLBuffer*[fBufCount];
- for (unsigned int index = 0; index < fBufCount; index++)
- fBufList[index] = 0;
- }
- XMLBufferMgr::~XMLBufferMgr()
- {
- // Delete any buffers that got allocated
- for (unsigned int index = 0; index < fBufCount; index++)
- delete fBufList[index];
- // And then the buffer list
- fMemoryManager->deallocate(fBufList); //delete [] fBufList;
- }
- // ---------------------------------------------------------------------------
- // Buffer management
- // ---------------------------------------------------------------------------
- XMLBuffer& XMLBufferMgr::bidOnBuffer()
- {
- //
- // Look for a buffer that is not in use. If we hit a null entry, then
- // we have to add one.
- //
- for (unsigned int index = 0; index < fBufCount; index++)
- {
- // No more buffers available, so create one and take it
- if (!fBufList[index])
- {
- fBufList[index] = new (fMemoryManager) XMLBuffer(1023, fMemoryManager);
- fBufList[index]->setInUse(true);
- return *fBufList[index];
- }
- //
- // There's one here, so see if its use. If not, mark it, reset it,
- // and take it
- //
- if (!fBufList[index]->getInUse())
- {
- fBufList[index]->reset();
- fBufList[index]->setInUse(true);
- return *(fBufList[index]);
- }
- }
- // We did not find one, so freak out
- ThrowXML(RuntimeException, XMLExcepts::BufMgr_NoMoreBuffers);
- // NOTE: Dummy return to make some compilers happy. Never really gets called!
- return *fBufList[0];
- }
- void XMLBufferMgr::releaseBuffer(XMLBuffer& toRelease)
- {
- // Look for this buffer in the list
- for (unsigned int index = 0; index < fBufCount; index++)
- {
- if (fBufList[index] == &toRelease)
- {
- // Unmark it
- toRelease.setInUse(false);
- return;
- }
- }
- // It was not a legal buffer
- ThrowXML(RuntimeException, XMLExcepts::BufMgr_BufferNotInPool);
- }
- XERCES_CPP_NAMESPACE_END