/// <summary>
/// 设置文件读取
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
private bool set(TmphReader reader)
{
TmphInterlocked.NoCheckCompareSetSleep0(ref readerLock);
if (currentReader == null)
{
currentReader = reader;
readerLock = 0;
reader.FileStream = this;
return true;
}
currentReader.Next = reader;
readerLock = 0;
return false;
}
/// <summary>
/// 读取下一个文件数据
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
private TmphReader next(TmphReader reader)
{
TmphInterlocked.NoCheckCompareSetSleep0(ref readerLock);
var nextReader = reader.Next;
if (nextReader == null) currentReader = null;
else if ((reader.Next = nextReader.Next) == null) currentReader = reader;
readerLock = 0;
return nextReader;
}
/// <summary>
/// 文件读取
/// </summary>
/// <param name="index">读取文件位置</param>
/// <param name="onReaded">读取文件回调函数</param>
/// <returns></returns>
public static TmphReader Get(TmphIndex index,
Func<TmphAsynchronousMethod.TmphReturnValue<TmphTcpBase.TmphSubByteArrayEvent>, bool> onReaded)
{
var reader = TmphTypePool<TmphReader>.Pop();
if (reader == null)
{
try
{
reader = new TmphReader();
}
catch
{
return null;
}
}
reader.onReaded = onReaded;
reader.index = index;
return reader;
}
/// <summary>
/// 等待缓存写入
/// </summary>
/// <param name="reader"></param>
private void wait(TmphReader reader)
{
var endIndex = reader.EndIndex;
if (endIndex <= fileLength)
{
if (set(reader)) reader.Read();
return;
}
flush(true);
if (isDisposed == 0)
{
if (set(reader)) reader.Read();
}
else reader.Cancel();
}
