/// <summary>
/// </summary>
/// <param name="Algo"></param>
public byte[] ComputeLargeStreamHash(Stream Stream, RateTracker Tracker, ChecksumProgressEventHandler Callback)
{
// Buffer size optimized for reading massive files.
byte[] buffer = MemoryPool.AllocBuffer(BufferSize);
int bytesRead;
do
{
bytesRead = Stream.Read(buffer, 0, BufferSize);
if (bytesRead > 0)
{
HashCore(buffer, 0, bytesRead);
if (Callback != null)
{
Callback?.Invoke(bytesRead);
}
if (Tracker != null)
{
Tracker.Out(bytesRead);
}
}
} while (bytesRead > 0);
HashValue = HashFinal();
byte[] Tmp = (byte[])HashValue.Clone();
Initialize();
MemoryPool.ReleaseBuffer(buffer);
return(Tmp);
}
/// <summary>
/// </summary>
/// <param name="Stm"></param>
/// <param name="Work"></param>
/// <param name="Offset"></param>
/// <param name="Size"></param>
private void ReadWithOffset(ActiveStream Stm, Task Work, int Offset)
{
lock (Stm)
{
try
{
Stm.Stream.Seek(Work.Offset + Offset, SeekOrigin.Begin);
Stm.Stream.BeginRead(
Work.Data, (int)Work.DataOffset + Offset, (int)Work.Size - Offset, Result =>
{
try
{
int BytesRead = Stm.Stream.EndRead(Result);
if (BytesRead == 0)
{
Logger.Log(LogLevel.Error, LogCategory.IO, "Failed to read file {0} at offset {1} size {2}. Encountered end of file.", Stm.Path, Work.Offset + Offset, Work.Size - Offset);
Work.Callback?.Invoke(false);
}
else
{
GlobalBandwidthStats.Out(BytesRead);
if (BytesRead < Work.Size)
{
ReadWithOffset(Stm, Work, Offset + BytesRead);
return;
}
ulong ElapsedTime = TimeUtils.Ticks - Work.QueueTime;
OutLatency.Add(ElapsedTime);
Work.Callback?.Invoke(true);
}
}
catch (Exception Ex)
{
Logger.Log(LogLevel.Error, LogCategory.IO, "Failed to read file {0} with error: {1}", Stm.Path, Ex.Message);
Work.Callback?.Invoke(false);
}
finally
{
Interlocked.Add(ref GlobalQueuedOut, -Work.Size);
Interlocked.Decrement(ref Stm.ActiveOperations);
WakeThread();
}
}, null
);
}
catch (Exception Ex)
{
Logger.Log(LogLevel.Error, LogCategory.IO, "Failed to read to file {0} with error: {1}", Stm.Path, Ex.Message);
Work.Callback?.Invoke(false);
Interlocked.Add(ref GlobalQueuedOut, -Work.Size);
Interlocked.Decrement(ref Stm.ActiveOperations);
WakeThread();
}
}
}
