public void OnComplete()
{
if (Interlocked.Decrement(ref wip) == 0)
{
all.Dispose();
actual.OnComplete();
}
}
public void OnComplete()
{
if (Interlocked.CompareExchange(ref once, 1, 0) == 0)
{
all.Dispose();
actual.OnComplete();
}
}
public void Dispose()
{
tasks.Dispose();
}