src/XSLT/XalanSourceTreeDocumentAllocator.hpp

/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2002 The Apache Software Foundation.  All rights 
 * reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *       "This product includes software developed by the
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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) 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(XALANSOURCETREEDOCUMENTALLOCATOR_INCLUDE_GUARD_12455133)
#define XALANSOURCETREEDOCUMENTALLOCATOR_INCLUDE_GUARD_12455133



// Base include file.  Must be first.
#include <XSLT/XSLTDefinitions.hpp>



#include <PlatformSupport/ReusableArenaAllocator.hpp>



#include <XalanSourceTree/XalanSourceTreeDocument.hpp>



class XALAN_XSLT_EXPORT XalanSourceTreeDocumentAllocator
{
public:

	typedef XalanSourceTreeDocument				data_type;

	typedef ReusableArenaAllocator<data_type>	ArenaAllocatorType;
	typedef ArenaAllocatorType::size_type		size_type;

	enum { eDefaultNamesStringPoolBlockSize = XalanSourceTreeDocument::eDefaultNamesStringPoolBlockSize,
		   eDefaultNamesStringPoolBucketCount = XalanSourceTreeDocument::eDefaultNamesStringPoolBucketCount,
		   eDefaultNamesStringPoolBucketSize = XalanSourceTreeDocument::eDefaultNamesStringPoolBucketSize,
		   eDefaultValuesStringPoolBlockSize = XalanSourceTreeDocument::eDefaultValuesStringPoolBlockSize,
		   eDefaultValuesStringPoolBucketCount = XalanSourceTreeDocument::eDefaultValuesStringPoolBucketCount,
		   eDefaultValuesStringPoolBucketSize = XalanSourceTreeDocument::eDefaultValuesStringPoolBucketSize };

	typedef XalanSourceTreeDocument::block_size_type	block_size_type;
	typedef XalanSourceTreeDocument::bucket_count_type	bucket_count_type;
	typedef XalanSourceTreeDocument::bucket_size_type	bucket_size_type;

	/**
	 * Construct an instance that will allocate blocks of the specified size.
	 *
	 * @param theBlockSize The block size.
	 */
	XalanSourceTreeDocumentAllocator(size_type	theBlockCount);

	~XalanSourceTreeDocumentAllocator();
	
	/**
	 * Create a ResultTreeFrag object.
	 * 
	 * @param theValue The constructor parameter
	 *
	 * @return pointer to a node
	 */
	data_type*
	create(
			bool				fPoolAllText = true,
			block_size_type		theNamesStringPoolBlockSize = eDefaultNamesStringPoolBlockSize,
			bucket_count_type	theNamesStringPoolBucketCount = eDefaultNamesStringPoolBucketCount,
			bucket_size_type	theNamesStringPoolBucketSize = eDefaultNamesStringPoolBucketSize,
			block_size_type		theValuesStringPoolBlockSize = eDefaultValuesStringPoolBlockSize,
			bucket_count_type	theValuesStringPoolBucketCount = eDefaultValuesStringPoolBucketCount,
			bucket_size_type	theValuesStringPoolBucketSize = eDefaultValuesStringPoolBucketSize);

	/**
	 * Delete a XalanSourceTreeDocument object from allocator.	 
	 */
	bool
	destroy(data_type*	theObject);

	/**
	 * Determine if an object is owned by the allocator...
	 */
	bool
	ownsObject(const data_type*		theObject)
	{
		return m_allocator.ownsObject(theObject);
	}

	/**
	 * Delete all XalanSourceTreeDocument objects from allocator.	 
	 */	
	void
	reset();

	/**
	 * Get the number of ArenaBlocks currently allocated.
	 *
	 * @return The number of blocks.
	 */
	size_type
	getBlockCount() const
	{
		return m_allocator.getBlockCount();
	}

	/**
	 * Get size of an ArenaBlock, that is, the number
	 * of objects in each block.
	 *
	 * @return The size of the block
	 */
	size_type
	getBlockSize() const
	{
		return m_allocator.getBlockSize();
	}

private:

	// Not implemented...
	XalanSourceTreeDocumentAllocator(const XalanSourceTreeDocumentAllocator&);

	XalanSourceTreeDocumentAllocator&
	operator=(const XalanSourceTreeDocumentAllocator&);

	// Data members...
	ArenaAllocatorType	m_allocator;
};



#endif	// XALANSOURCETREEDOCUMENTALLOCATOR_INCLUDE_GUARD_12455133