public Task <long> CalculateParallelPerByte(string filename)
{
return(Task.Run(() =>
{
try
{
this.filename = filename;
var dt = DateTime.Now;
fileLength = GetLength(filename);
partSize = GetBlockSize(fileLength); //1048576;//
//reader = new FileStream(filename, FileMode.Open);
iterations = (long)Math.Round(fileLength / (decimal)partSize, MidpointRounding.AwayFromZero);
//Parallel.For(0, iterations, CalculateFilePart);
reader = new FileStream(filename, FileMode.Open);
Parallel.For(0, iterations, i => { Calculate(i); });
string str = $"File: {Path.GetFileName(filename)} value: {res} time: {(DateTime.Now - dt).TotalSeconds}, length: {fileLength}";
var fv = new FileValue()
{
Params = str, FilePath = filename, Summ = res
};
ProcessNotifier?.Invoke(str, 100, 100);
reader?.Close();
reader?.Dispose();
reader = null;
return res;
}
catch (Exception ex)
{
//throw new CalculateFileException($"Не удалось высчитать файл: {Path.GetFileName(filename)}", ex);
string str = $"Не удалось высчитать файл: " + Path.GetFileName(filename);
//ProcessEventNotifier?.Invoke(new FileValue() { Params = str, FileName = filename }, 100, 100);
return 0;
}
finally
{
reader?.Close();
reader?.Dispose();
reader = null;
ClearValues();
}
}));
}
internal override Task GroupAndWriteFiles(ConcurrentBag <FileValue> res, string dataFileName = null)
{
return(Task.Run(() =>
{
try
{
dataFileName = string.IsNullOrEmpty(dataFileName) ? "CountSummDataFile" : dataFileName;
progress = 0;
var dataFile = new ConcurrentDictionary <string, List <FileValue> >();
ConcurrentBag <string> foldersList = new ConcurrentBag <string>(res.GroupBy(x => x.FolderPath).Select(s => s.Key).ToList());
foreach (var folder in foldersList)
{
dataFile.GetOrAdd(folder, res.Where(w => w.FolderPath == folder && string.IsNullOrEmpty(w.Error)).ToList());
}
var exceptions = new ConcurrentQueue <Exception>();
var parallelOptions = new ParallelOptions {
MaxDegreeOfParallelism = Environment.ProcessorCount
};
var loop = Parallel.ForEach(dataFile, parallelOptions, (item, stp) =>
{
try
{
if (NeedToStop)
{
stp.Stop();
}
item.Value.ForEach(itm =>
{
itm.FileName = Path.GetFileName(itm.FilePath);
});
XmlSerializer writer = new XmlSerializer(item.Value.GetType());
using (var sw = new StreamWriter(item.Key + "//" + dataFileName + ".xml"))
{
writer.Serialize(sw, item.Value);
}
lock (locker)
{
progress++;
}
ProcessNotifier?.Invoke(null, progress, dataFile.Count);
}
catch (Exception e)
{
exceptions.Enqueue(e);
}
});
if (exceptions.Count > 0)
{
throw new AggregateException(exceptions);
}
}
catch (Exception e)
{
throw new ReportException(e);
}
}));
}
private void ReadAndCalculateFile(string filename, ParallelLoopState stp, int blockSize = 0)
{
try
{
long res = 0;
var dt = DateTime.Now;
var fileLength = GetLength(filename);
using (BinaryReader reader = new BinaryReader(new FileStream(filename, FileMode.Open)))
{
//threadIDs.Add(Thread.CurrentThread.ManagedThreadId);
var partSize = (blockSize == 0) ? GetBlockSize(fileLength) : blockSize;
byte[] bytes;
for (int i = 0; i < fileLength; i += partSize)
{
if (NeedToStop)
{
stp?.Stop();
GC.Collect();
return;
}
bytes = new byte[partSize];
bytes = reader.ReadBytes(bytes.Length);
var resu = CalculateValues(bytes);
res += resu;
GC.Collect();
}
var addInfo = $" File: {filename} value: {res}, time: {(DateTime.Now - dt).TotalSeconds} blockSize:{partSize}";
var fv = new FileValue {
FilePath = filename, Summ = res, Params = addInfo
};
lock (locker)
{
fileValues.Add(fv);
progress++;
}
FileCompleteNotifier?.Invoke(fv, true);
ProcessNotifier?.Invoke(addInfo, progress, FilesCount);
//threadIDs.(Thread.CurrentThread.ManagedThreadId);
}
}
catch (Exception ex)
{
if (ex is OutOfMemoryException)
{
ReadAndCalculateFile(filename, stp, 1048576);
return;
}
if (ex is StopException)
{
return;
}
FileValue fv;
var addInfo = $"File: {Path.GetFileName(filename)} - ошибка. {ex.Message}";
lock (locker)
{
fv = new FileValue()
{
FilePath = filename, Summ = 0, Error = ex.Message, Params = addInfo
};
fileValues.Add(fv);
}
progress++;
FileCompleteNotifier?.Invoke(fv, false, addInfo);
ProcessNotifier?.Invoke(addInfo, progress, FilesCount);
}
}
