private void StartWorker(
int threadIndex,
long currentBlockOffset,
byte[] dataToProcess,
IReadOnlyList <CustomGzipFooter.CompressedChunkInfo> chunksToProcess,
CancellationToken cancellationToken)
{
for (int i = 0; i < chunksToProcess.Count; i++)
{
if (cancellationToken.IsCancellationRequested)
{
return;
}
var currentChunk = chunksToProcess[i];
var currentChunkStart = currentChunk.CompressedStart - currentBlockOffset;
using (var input = new MemoryStream(dataToProcess, (int)currentChunkStart, (int)currentChunk.CompressedLength, false))
{
// do not write directly to output...
using (var output = new MemoryStream())
{
GzipWrapper.Decompress(input, output);
lock (_writerLocker)
{
this._writerStream.Seek(currentChunk.OriginalStart, SeekOrigin.Begin);
output.WriteTo(_writerStream);
}
}
}
}
}
private void StartWorker()
{
while (this._chunkInfos.TryTake(out CustomGzipFooter.CompressedChunkInfo chunkInfo))
{
byte[] buffer = new byte[chunkInfo.CompressedLength];
int bytesRead;
lock (this._readerLocker)
{
this._readerStream.Seek(chunkInfo.CompressedStart, SeekOrigin.Begin);
bytesRead = _readerStream.Read(buffer, 0, (int)chunkInfo.CompressedLength);
}
var decompressed = GzipWrapper.Decompress(buffer, 0, bytesRead);
lock (this._writerLocker)
{
this._writerStream.Seek(chunkInfo.OriginalStart, SeekOrigin.Begin);
// decompresseed.Length should be the same as chunkInfo.OriginalLength
this._writerStream.Write(decompressed, 0, decompressed.Length);
}
}
}
private void StartWorker(int chunkSize, CancellationToken cancellationToken)
{
byte[] buffer = new byte[chunkSize];
int bytesRead;
while ((bytesRead = ReadChunk(buffer, chunkSize, out long chunkStartPosition)) > 0)
{
if (cancellationToken.IsCancellationRequested)
{
return;
}
var compressed = GzipWrapper.Compress(buffer, 0, bytesRead);
lock (_writerLocker)
{
this._footer.AddChunkInfo(
originalStart: chunkStartPosition,
compressedStart: this._writerStream.Position,
originalLength: bytesRead,
compressedLength: compressed.Length);
this._writerStream.Write(compressed, 0, compressed.Length);
}
}
}
