public void Subscribe(ISignalObserver <T> observer)
{
ValidationHelper.RequireNonNull(observer, nameof(observer));
var errorSignals = new PublishSubject <Exception>();
var redo = default(IObservableSource <U>);
try
{
redo = ValidationHelper.RequireNonNullRef(handler(errorSignals), "The handler returned a null IObservableSource");
}
catch (Exception ex)
{
DisposableHelper.Error(observer, ex);
return;
}
var parent = new MainObserver(observer, source, new SerializedSignalObserver <Exception>(errorSignals));
observer.OnSubscribe(parent);
redo.Subscribe(parent.handlerObserver);
parent.HandlerNext();
}
public IDisposable Connect(Action <IDisposable> onConnect = null)
{
for (; ;)
{
var subject = Volatile.Read(ref connection);
if (subject == null)
{
subject = new PublishSubject <T>();
if (Interlocked.CompareExchange(ref connection, subject, null) != null)
{
continue;
}
}
else
{
if (subject.HasException() || subject.HasCompleted() || subject.IsDisposed())
{
Interlocked.CompareExchange(ref connection, null, subject);
continue;
}
}
var shouldConnect = subject.Prepare();
onConnect?.Invoke(subject);
if (shouldConnect)
{
source.Subscribe(subject);
}
return(subject);
}
}
public void Dispose()
{
if (Interlocked.Exchange(ref downstream, null) != null)
{
parent.Remove(this);
parent = null;
}
}
public void Subscribe(ISignalObserver <T> observer)
{
for (; ;)
{
var subject = Volatile.Read(ref connection);
if (subject == null)
{
subject = new PublishSubject <T>();
if (Interlocked.CompareExchange(ref connection, subject, null) != null)
{
continue;
}
}
subject.Subscribe(observer);
break;
}
}
public PublishDisposable(ISignalObserver <T> downstream, PublishSubject <T> parent)
{
this.downstream = downstream;
Volatile.Write(ref this.parent, parent);
}