123 lines
No EOL
3.7 KiB
C#
123 lines
No EOL
3.7 KiB
C#
/***************************************************************************
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* QueuedMemoryWriter.cs
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* -------------------
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* begin : December 16, 2010
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* copyright : (C) The RunUO Software Team
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* email : info@runuo.com
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*
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* $Id: QueuedMemoryWriter.cs 37 2006-06-19 17:28:24Z asayre $
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*
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***************************************************************************/
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/***************************************************************************
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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***************************************************************************/
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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Text;
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namespace Server
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{
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public sealed class QueuedMemoryWriter : BinaryFileWriter
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{
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private struct IndexInfo
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{
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public int size;
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public int typeCode;
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public int serial;
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}
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private MemoryStream _memStream;
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private Queue<IndexInfo> _indexQueue = new Queue<IndexInfo>(); //TODO: Pick a more optimal starting size
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protected override int BufferSize
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{
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get { return 4096; }
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}
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public QueuedMemoryWriter()
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: base(new MemoryStream(1024 * 1024), true)
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{
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this._memStream = this.UnderlyingStream as MemoryStream;
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}
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public void QueueForIndex(ISerializable serializable, int size)
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{
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IndexInfo info;
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info.size = size;
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info.typeCode = serializable.TypeReference; //For guilds, this will automagically be zero.
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info.serial = serializable.SerialIdentity;
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_indexQueue.Enqueue(info);
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}
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public void CommitTo(SequentialFileWriter dataFile, SequentialFileWriter indexFile)
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{
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this.Flush();
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byte[] memBuffer = _memStream.GetBuffer();
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int memLength = (int)_memStream.Position;
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long actualPosition = dataFile.Position;
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dataFile.Write(memBuffer, 0, memLength); //The buffer contains the data from many items.
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//Console.WriteLine("Writing {0} bytes starting at {1}", memLength, actualPosition);
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byte[] indexBuffer = new byte[20];
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//int indexWritten = _indexQueue.Count * indexBuffer.Length;
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//int totalWritten = memLength + indexWritten
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while (_indexQueue.Count > 0)
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{
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IndexInfo info = _indexQueue.Dequeue();
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int typeCode = info.typeCode;
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int serial = info.serial;
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int length = info.size;
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indexBuffer[0] = (byte)(info.typeCode);
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indexBuffer[1] = (byte)(info.typeCode >> 8);
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indexBuffer[2] = (byte)(info.typeCode >> 16);
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indexBuffer[3] = (byte)(info.typeCode >> 24);
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indexBuffer[4] = (byte)(info.serial);
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indexBuffer[5] = (byte)(info.serial >> 8);
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indexBuffer[6] = (byte)(info.serial >> 16);
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indexBuffer[7] = (byte)(info.serial >> 24);
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indexBuffer[8] = (byte)(actualPosition);
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indexBuffer[9] = (byte)(actualPosition >> 8);
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indexBuffer[10] = (byte)(actualPosition >> 16);
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indexBuffer[11] = (byte)(actualPosition >> 24);
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indexBuffer[12] = (byte)(actualPosition >> 32);
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indexBuffer[13] = (byte)(actualPosition >> 40);
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indexBuffer[14] = (byte)(actualPosition >> 48);
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indexBuffer[15] = (byte)(actualPosition >> 56);
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indexBuffer[16] = (byte)(info.size);
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indexBuffer[17] = (byte)(info.size >> 8);
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indexBuffer[18] = (byte)(info.size >> 16);
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indexBuffer[19] = (byte)(info.size >> 24);
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indexFile.Write(indexBuffer, 0, indexBuffer.Length);
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actualPosition += info.size;
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}
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this.Close(); //We're donezo with this writer.
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}
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}
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} |