public void Subscribe(ISubscriber <T> s)
{
PublisherCacheInner inner = new PublisherCacheInner(s, this, capacityHint, head);
Add(inner);
if (inner.IsCancelled())
{
Remove(inner);
return;
}
inner.Drain();
if (Volatile.Read(ref once) == 0 && Interlocked.CompareExchange(ref once, 1, 0) == 0)
{
source.Subscribe(this);
}
}
void Remove(PublisherCacheInner inner)
{
ProcessorHelper.Remove(ref subscribers, inner, Terminated, Empty);
}
bool Add(PublisherCacheInner inner)
{
return(ProcessorHelper.Add(ref subscribers, inner, Terminated));
}
