/* This file is part of the db4o object database http://www.db4o.com

Copyright (C) 2004 - 2010  Versant Corporation http://www.versant.com

db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program.  If not, see http://www.gnu.org/licenses/. */
using Db4objects.Db4o.IO;

namespace Db4objects.Db4o.IO
{
	/// <summary>Strategy for file/byte array growth that will always double the current size
	/// 	</summary>
	public class DoublingGrowthStrategy : IGrowthStrategy
	{
		public virtual long NewSize(long curSize, long requiredSize)
		{
			if (curSize == 0)
			{
				return requiredSize;
			}
			long newSize = curSize;
			while (newSize < requiredSize)
			{
				newSize *= 2;
			}
			return newSize;
		}
	}
}
