/// <summary>
/// 开始读取文件
/// </summary>
public unsafe void Read()
{
do
{
var readSize = index.Size + sizeof(int);
try
{
if (FileStream.isDisposed == 0)
{
TmphBuffer = (memoryPool = TmphMemoryPool.GetPool(readSize)).Get();
var fileReader = FileStream.fileReader;
var offset = fileReader.Position - index.Index;
if (offset >= 0 || -offset < index.Index) fileReader.Seek(offset, SeekOrigin.Current);
else fileReader.Seek(index.Index, SeekOrigin.Begin);
if (fileReader.Read(TmphBuffer, 0, readSize) == readSize)
{
fixed (byte* bufferFixed = TmphBuffer)
{
if (*(int*)bufferFixed == index.Size) readSize = index.Size;
else
TmphLog.Default.Add(
FileStream.FileName + " index[" + index.Index.toString() + "] size[" +
(*(int*)bufferFixed).toString() + "]<>" + index.Size.toString(), false,
false);
}
}
else readSize = 0;
}
}
catch (Exception error)
{
TmphLog.Default.Add(error, null, false);
}
var onReaded = this.onReaded;
if (readSize == index.Size)
{
if (
onReaded(new TmphTcpBase.TmphSubByteArrayEvent
{
TmphBuffer = TmphSubArray<byte>.Unsafe(TmphBuffer, sizeof(int), index.Size),
Event = memoryPool.PushSubArray
}))
TmphBuffer = null;
else memoryPool.Push(ref TmphBuffer);
}
else
{
onReaded(default(TmphTcpBase.TmphSubByteArrayEvent));
if (memoryPool != null) memoryPool.Push(ref TmphBuffer);
}
var next = FileStream.next(this);
if (next == null)
{
FileStream = null;
onReaded = null;
memoryPool = null;
TmphTypePool<TmphReader>.Push(this);
return;
}
onReaded = next.onReaded;
index = next.index;
next.onReaded = null;
TmphTypePool<TmphReader>.Push(next);
} while (true);
}
/// <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>
/// 读取文件分块数据//showjim+cache
/// </summary>
/// <param name="index">文件分块数据位置</param>
/// <param name="size">文件分块字节大小</param>
/// <param name="onReaded"></param>
internal unsafe void Read(TmphIndex index,
Func<TmphAsynchronousMethod.TmphReturnValue<TmphTcpBase.TmphSubByteArrayEvent>, bool> onReaded)
{
if (onReaded == null) TmphLog.Error.Throw(TmphLog.TmphExceptionType.Null);
var endIndex = index.EndIndex;
if (index.Size > 0 && ((int)index.Index & 3) == 0 && endIndex <= fileBufferLength)
{
if (endIndex <= fileLength)
{
var reader = TmphReader.Get(index, onReaded);
if (reader != null)
{
if (set(reader)) TmphThreadPool.TinyPool.FastStart(reader.ReadHandle, null, null);
return;
}
}
else
{
TmphMemoryPool memoryPool = null;
byte[] TmphBuffer = null;
var copyedSize = int.MinValue;
TmphInterlocked.NoCheckCompareSetSleep0(ref bufferLock);
if (isDisposed == 0)
{
if (index.Index >= bufferIndex)
{
index.Index -= bufferIndex;
try
{
TmphBuffer = (memoryPool = TmphMemoryPool.GetPool(index.Size)).Get(index.Size);
foreach (var nextData in buffers.array)
{
var data = nextData.SubArray;
if (index.Index != 0)
{
if (index.Index >= data.Count)
{
index.Index -= data.Count;
continue;
}
data.UnsafeSet(data.StartIndex + (int)index.Index,
data.Count - (int)index.Index);
index.Index = 0;
}
if (copyedSize < 0)
{
fixed (byte* dataFixed = data.array)
{
if (*(int*)(dataFixed + data.StartIndex) != index.Size) break;
}
if ((copyedSize = data.Count - sizeof(int)) == 0) continue;
data.UnsafeSet(data.StartIndex + sizeof(int), copyedSize);
copyedSize = 0;
}
var copySize = index.Size - copyedSize;
if (data.Count >= copySize)
{
Buffer.BlockCopy(data.array, data.StartIndex, TmphBuffer, copyedSize, copySize);
copyedSize = index.Size;
break;
}
Buffer.BlockCopy(data.array, data.StartIndex, TmphBuffer, copyedSize, copySize);
copyedSize += copySize;
}
}
catch (Exception error)
{
TmphLog.Default.Add(error, null, false);
}
finally
{
bufferLock = 0;
}
if (copyedSize == index.Size)
{
onReaded(new TmphTcpBase.TmphSubByteArrayEvent
{
TmphBuffer = TmphSubArray<byte>.Unsafe(TmphBuffer, 0, index.Size),
Event = memoryPool.PushSubArray
});
return;
}
}
else
{
bufferLock = 0;
var reader = TmphReader.Get(index, onReaded);
if (reader != null)
{
TmphThreadPool.TinyPool.FastStart(waitHandle, reader, null, null);
return;
}
}
}
else bufferLock = 0;
}
}
onReaded(default(TmphTcpBase.TmphSubByteArrayEvent));
}
