scala – Akka context watch/unwatch发生在之前的关系

> P手表C(背景手表c)
> P unwatches C(上下文unwatch c)
> P优雅地停止C(c！PoisonPill)

我想知道的是;我保证P不会收到C的终止事件吗？

这是一段代码示例

class HappensBefore extends App {
  class C extends Actor { def receive = {} } 
  class P extends Actor {
    val c = context actorOf Props[C]
    context watch c
    context unwatch c
    c ! PoisonPill
    def receive = { case Terminated(child) => println("Oh Noes!") }
  }
  ActorSystem("test") actorOf Props[P]
}