internal void InnerNext(FlatMapInnerSubscriber inner, R item)
{
if (Volatile.Read(ref wip) == 0 && Interlocked.CompareExchange(ref wip, 1, 0) == 0)
{
long e = emitted;
if (Volatile.Read(ref requested) != e)
{
actual.OnNext(item);
emitted = e + 1;
inner.Request(1);
}
else
{
ISimpleQueue <R> q = inner.GetOrCreateQueue();
q.Offer(item);
}
if (Interlocked.Decrement(ref wip) == 0)
{
return;
}
}
else
{
ISimpleQueue <R> q = inner.GetOrCreateQueue();
q.Offer(item);
if (Interlocked.Increment(ref wip) != 1)
{
return;
}
}
DrainLoop();
}
internal void InnerNext(FlatMapInnerSubscriber sender, R value)
{
if (sender.IsAsyncFused())
{
Drain();
return;
}
if (QueueDrainHelper.TryEnter(ref wip))
{
long r = Volatile.Read(ref requested);
if (r != 0)
{
actual.OnNext(value);
if (r != long.MaxValue)
{
Interlocked.Decrement(ref requested);
}
sender.RequestOne();
}
else
{
var q = sender.GetOrCreateQueue();
q.Offer(value);
}
if (Interlocked.Decrement(ref wip) == 0)
{
return;
}
}
else
{
var q = sender.GetOrCreateQueue();
q.Offer(value);
if (Interlocked.Increment(ref wip) != 1)
{
return;
}
}
DrainLoop();
}
