public static void Pump <T>(this IUVStream <T> readStream, IUVStream <T> writeStream, Action <Exception> callback)
{
bool pending = false;
bool done = false;
Action <Exception> call = null;
Action complete = () => call(null);
call = (ex) =>
{
if (done)
{
return;
}
readStream.Error -= call;
readStream.Complete -= complete;
done = true;
if (callback != null)
{
callback(ex);
}
};
readStream.Data += ((data) =>
{
writeStream.Write(data, null);
if (writeStream.WriteQueueSize > 0)
{
pending = true;
readStream.Pause();
}
});
writeStream.Drain += () =>
{
if (pending)
{
pending = false;
readStream.Resume();
}
};
readStream.Error += call;
readStream.Complete += complete;
readStream.Resume();
}
public static void Pump(this IUVStream readStream, IUVStream writeStream, Action <Exception, Exception> callback)
{
bool pending = false;
bool done = false;
Action <Exception, Exception> call = (ex1, ex2) => {
if (done)
{
return;
}
done = true;
if (callback != null)
{
callback(ex1, ex2);
}
};
readStream.Data += ((bb) => {
writeStream.Write(bb.Array, bb.Offset, bb.Count);
if (writeStream.WriteQueueSize > 0)
{
pending = true;
readStream.Pause();
}
});
writeStream.Drain += () => {
if (pending)
{
pending = false;
readStream.Resume();
}
};
readStream.Complete += () => {
writeStream.Shutdown(() => call(null, null));
};
readStream.Error += (ex) => call(ex, null);
readStream.Error += (ex) => call(null, ex);
readStream.Resume();
}
public static Task <TData?> ReadStructAsync <TData>(this IUVStream <TData> stream) where TData : struct
{
var tcs = new TaskCompletionSource <TData?>();
#if TASK_STATUS
HelperFunctions.SetStatus(tcs.Task, TaskStatus.Running);
#endif
Action <Exception, TData?> finish = null;
Action <Exception> error = (e) => finish(e, null);
Action <TData> data = (val) => finish(null, val);
Action end = () => finish(null, null);
finish = HelperFunctions.Finish(tcs, () =>
{
stream.Pause();
stream.Error -= error;
stream.Complete -= end;
stream.Data -= data;
});
try
{
stream.Error += error;
stream.Complete += end;
stream.Data += data;
stream.Resume();
}
catch (Exception e)
{
finish(e, null);
}
return(tcs.Task);
}
