internal static void PushActorRefToStack(LocalActorRef actorRef)
{
InterlockedSpin.Swap(ref _stack, st =>
st == null
? ImmutableStack.Create(actorRef)
: st.Push(actorRef));
}
internal static void PopActorAndMarkerFromStack()
{
InterlockedSpin.Swap(ref _stack, st =>
st == null
? null
: st.Peek() == null // if first item is null, i.e. a marker
? st.Pop().Pop() // then pop that value,
: st.Pop()); // otherwise pop only the actor
}
public static void Clear_ForTestingONLY()
{
InterlockedSpin.Swap(ref _stack, st => st.Clear());
InterlockedSpin.Swap(ref _stack, st => st.Clear());
}
private void UpdateChildrenCollection(Func <ChildrenCollection, ChildrenCollection> updater)
{
#pragma warning disable 420 //Ok to disregard from CS0420 "a reference to a volatile field will not be treated as volatile" as we're using interlocked underneath, see http://msdn.microsoft.com/en-us/library/4bw5ewxy.aspx
InterlockedSpin.Swap(ref _childrenDoNotCallMeDirectly, updater);
#pragma warning restore 420
}
