public void StartSync(UserInputData input)
{
// create source streams
using var sourceStream = _streamFactory.CreateSourceFileStream(input.SourceFilePath);
using var mmf = MemoryMappedFile.CreateFromFile((FileStream)sourceStream, null, 0, MemoryMappedFileAccess.Read, HandleInheritability.Inheritable, false);
var portionSizes = new long[_settings.Cores];
portionSizes[0] = sourceStream.ReadInt64();
for (var i = 1; i < portionSizes.Length; i++)
{
sourceStream.Seek(portionSizes[i - 1], SeekOrigin.Current);
portionSizes[i] = sourceStream.ReadInt64();
}
var offsets = new long[_settings.Cores];
offsets[0] = sizeof(long);
for (var i = 1; i < offsets.Length; i++)
{
offsets[i] = offsets[i - 1] + portionSizes[i - 1] + sizeof(long);
}
var threads = new ThreadWrapper[_settings.Cores];
for (var i = 0; i < threads.Length; i++)
{
threads[i] = new ThreadWrapper(DecompressPortion);
}
for (var i = 0; i < _settings.Cores; i++)
{
var offset = offsets[i];
var size = portionSizes[i];
var view = mmf.CreateViewStream(offset, size, MemoryMappedFileAccess.Read);
var zipStream = new GZipStream(view, CompressionMode.Decompress);
threads[i].Start(new Tuple <Stream, int>(zipStream, i));
}
using var targetStream = _streamFactory.CreateTargetFileStream(input.TargetFilePath);
for (var i = 0; i < _settings.Cores; i++)
{
var thread = threads[i];
while (!thread.IsCompleted)
{
}
using (var fs = File.OpenRead($"temp_decompress_{i}"))
{
fs.CopyTo(targetStream);
}
File.Delete($"temp_decompress_{i}");
}
}
public void StartSync(UserInputData input)
{
// initial values
var length = new FileInfo(input.SourceFilePath).Length;
var partialSizeList = FileInfoHelpers.GetPartialSizeList(length, _settings.Cores, _settings.BufferSize);
// initialize streams
using var targetFileStream = _streamFactory.CreateTargetFileStream(input.TargetFilePath);
using var mmf = MemoryMappedFile.CreateFromFile(input.SourceFilePath, FileMode.Open, null, 0, MemoryMappedFileAccess.Read);
var compressors = new CompressorPartial[partialSizeList.Length];
for (var i = 0; i < partialSizeList.Length; i++)
{
compressors[i] = new CompressorPartial(mmf, Path.GetTempFileName(), partialSizeList[i], _settings.BufferSize);
}
foreach (var compressor in compressors)
{
compressor.Wait();
compressor.CopyTo(targetFileStream);
compressor.DeleteSource();
}
}
