public void Process()
{
var gZip = _factory.CreateGZip();
using (var threadPool = new ThreadPool(_threadPoolSize))
using (var reader = _factory.CreateReader())
using (var writer = _factory.CreateWriter())
{
while (reader.CanContinue)
{
using (var compressQueue = new BlockingQueue <IWaitable <Block> >())
{
// schedule a write work
var writeWork = threadPool.ScheduleWork(() =>
{
while (!compressQueue.IsCompleted)
{
IWaitable <Block> work;
try
{
work = compressQueue.Dequeue();
}
catch
{
break;
}
try
{
work.Wait();
writer.WriteNext(work.Result);
}
finally
{
work.Dispose();
}
}
});
// read blocks until the memory limitation
var readBytes = 0L;
while (readBytes < _settings.MemoryLimitation && reader.CanContinue)
{
var block = reader.ReadNext();
readBytes += block.Data.Length;
// schedule a compress work
var work = threadPool.ScheduleWork(() =>
{
gZip.Process(block);
return(block);
});
compressQueue.Enqueue(work);
}
compressQueue.CompleteEnqueuing();
// wait for write work to complete before continue
writeWork.Wait();
}
}
}
}