如何使scala actor'等待信号'但不丢失任何消息？

import scala.actors.Actor

class MyActor extends Actor {
  def act(): Unit = {
    loop {
      react {
        case msg =>
          // 处理消息
          println("Received message: " + msg)
      }
    }
  }
}

val actor = new MyActor
actor.start()

import scala.actors.Actor

class MyActor extends Actor {
  def act(): Unit = {
    receive {
      case msg =>
        // 处理消息
        println("Received message: " + msg)
    }
  }
}

val actor = new MyActor
actor.start()

import scala.actors.Actor
import scala.collection.mutable.Queue

class MyActor extends Actor {
  val messageQueue = new Queue[Any]

  def act(): Unit = {
    loop {
      react {
        case msg =>
          // 将消息加入队列
          messageQueue.enqueue(msg)
      }
    }
  }

  def processMessages(): Unit = {
    while (messageQueue.nonEmpty) {
      val msg = messageQueue.dequeue()
      // 处理消息
      println("Received message: " + msg)
    }
  }
}

val actor = new MyActor
actor.start()