The answer lies in UnstartedCell, but beware that this code may be morally
challenging: it uses a Lock ;-)
Regards, Roland
Sent from my iPhone
> On 21 Dec 2016, at 08:02, stella <interstel...@gmail.com> wrote:
>
> I'm trying to understand how actor creating is being performed internally.
> So, once we created our ActorSystem object we can start a top level actor
> like this:
>
> val system = ActorSystem("system", config)
> val ref = system.actorOf(MyActor.props, "myactor")
>
>
> Internally, it will invoke ActorRefProvider::actorOf(ActorSystemImpl, Props,
> InternalActorRef, ActorPath, Boolean, Option[Deoploy], Boolean, Boolean)
> which in my case is ended up with invocation
>
> if (async) new RepointableActorRef(system, props2, dispatcher, mailboxType,
> supervisor, path).initialize(async)
>
> where async=true. The initialize method, in turn invoke
>
> supervisor.sendSystemMessage(Supervise(this, async))
>
> which ends up with:
>
> protected[akka] def systemDispatch(receiver: ActorCell, invocation:
> SystemMessage): Unit = {
> val mbox = receiver.mailbox
> mbox.systemEnqueue(receiver.self, invocation)
> registerForExecution(mbox, false, true)
> }
>
> So, in effect, creating RepointableActorRef asynchronously means sending a
> system message to a supervisor which results in creating the actor instance
> itself, invoking the startup hook and so forth.
>
> QUESTION: Why there is no race condition here when we create ActorRef that
> way and immediately send a message to the actor? What thing does guarantee
> the memory consistency?
> --
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>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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