src/PlatformSupport/XalanReferenceCountedObject.hpp

/*
 * 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.
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 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
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 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * 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/>.
 */
#if !defined(XALANREFERENCECOUNTEDOBJECT_HEADER_GUARD_1357924680)
#define XALANREFERENCECOUNTEDOBJECT_HEADER_GUARD_1357924680



// Base include file.  Must be first.
#include <PlatformSupport/PlatformSupportDefinitions.hpp>



/**
 * Class to hold reference count information.
 */
class XALAN_PLATFORMSUPPORT_EXPORT XalanReferenceCountedObject
{
public:

	/**
	 * Increment reference count.	 
	 */
	static void
	addReference(XalanReferenceCountedObject*	theInstance);

	/**
	 * Decrement reference count.	 
	 */
	static void
	removeReference(XalanReferenceCountedObject*	theInstance);

protected:

	/**
	 * Create a XalanReferenceCountedObject.
	 */
	explicit
	XalanReferenceCountedObject();

	virtual
	~XalanReferenceCountedObject();

	virtual void 
	referenced() = 0;

	virtual void 
	dereferenced() = 0;

	virtual unsigned int
	getReferenceCount() const
	{
		return m_referenceCount;
	}

private:

	unsigned int	m_referenceCount;

	// Not implemented...
	XalanReferenceCountedObject&
	operator=(const XalanReferenceCountedObject&);

	XalanReferenceCountedObject(const XalanReferenceCountedObject&);
};



#endif	// XALANREFERENCECOUNTEDOBJECT_HEADER_GUARD_1357924680