private static void ProcessInput(IBassReplayGainScanner scanner, Stream input, Stream output, out bool exit)
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Begin reading command.");
var command = ReadInput <ScannerCommand>(input);
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Read command: {0}", Enum.GetName(typeof(ScannerCommandType), command.Type));
switch (command.Type)
{
case ScannerCommandType.Cancel:
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Sending cancellation signal to scanner.");
scanner.Cancel();
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Closing stdin.");
input.Close();
exit = true;
break;
case ScannerCommandType.Quit:
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Closing stdin/stdout.");
input.Close();
output.Close();
exit = true;
break;
default:
exit = false;
break;
}
}
public BassReplayGainScannerMonitor(IBassReplayGainScanner scanner, bool reportProgress, CancellationToken cancellationToken) : base(reportProgress)
{
this.ScannerItems = new Dictionary <Guid, ScannerItem>();
this.Scanner = scanner;
this.CancellationToken = cancellationToken;
}
private static void ProcessOutput(IBassReplayGainScanner scanner, Stream output)
{
WriteOutput(output, scanner.ScannerItems);
}
private static void Scan(IBassReplayGainScanner scanner, Stream input, Stream output, Stream error)
{
var thread1 = new Thread(() =>
{
try
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Starting scanner main thread.");
scanner.Scan();
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Finished scanner main thread.");
WriteOutput(output, new ScannerStatus(ScannerStatusType.Complete));
error.Flush();
}
catch (Exception e)
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Error, "Error on scanner main thread: {0}", e.Message);
WriteOutput(output, new ScannerStatus(ScannerStatusType.Error));
new StreamWriter(error).Write(e.Message);
error.Flush();
}
})
{
IsBackground = true
};
var thread2 = new Thread(() =>
{
try
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Starting scanner output thread.");
while (thread1.IsAlive)
{
ProcessOutput(scanner, output);
Thread.Sleep(INTERVAL);
}
ProcessOutput(scanner, output);
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Finished scanner output thread.");
}
catch (Exception e)
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Error, "Error on scanner output thread: {0}", e.Message);
}
})
{
IsBackground = true
};
var thread3 = new Thread(() =>
{
var exit = default(bool);
try
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Starting scanner input thread.");
while (thread1.IsAlive)
{
ProcessInput(scanner, input, output, out exit);
if (exit)
{
break;
}
Thread.Sleep(INTERVAL);
}
if (!exit)
{
ProcessInput(scanner, input, output, out exit);
}
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Debug, "Finished scanner input thread.");
}
catch (Exception e)
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Error, "Error on scanner input thread: {0}", e.Message);
}
})
{
IsBackground = true
};
thread1.Start();
thread2.Start();
thread3.Start();
thread1.Join();
if (!thread2.Join(TIMEOUT))
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Warn, "Scanner output thread did not complete gracefully, aborting.");
thread2.Abort();
}
if (!thread3.Join(TIMEOUT))
{
Logger.Write(typeof(BassReplayGainScannerHost), LogLevel.Warn, "Scanner input thread did not complete gracefully, aborting.");
thread3.Abort();
}
}