如何在演员 运行 时让程序暂停
how to make the program pause when actor is running
例如
import scala.actors.Actor
import scala.actors.Actor._
object Main {
class Pong extends Actor {
def act() {
var pongCount = 0
while (true) {
receive {
case "Ping" =>
if (pongCount % 1000 == 0)
Console.println("Pong: ping "+pongCount)
sender ! "Pong"
pongCount = pongCount + 1
case "Stop" =>
Console.println("Pong: stop")
exit()
}
}
}
}
class Ping(count: Int, pong: Actor) extends Actor {
def act() {
var pingsLeft = count - 1
pong ! "Ping"
while (true) {
receive {
case "Pong" =>
if (pingsLeft % 1000 == 0)
Console.println("Ping: pong")
if (pingsLeft > 0) {
pong ! "Ping"
pingsLeft -= 1
} else {
Console.println("Ping: stop")
pong ! "Stop"
exit()
}
}
}
}
}
def main(args: Array[String]): Unit = {
val pong = new Pong
val ping = new Ping(100000, pong)
ping.start
pong.start
println("???")
}
}
我尝试打印“???”在两个演员调用 exit() 之后,但现在它在 "Ping: Stop" 和 "Pong stop"
之前打印
我试过在actor中有一个flag,当actor是运行时flag为false,当actor停止时flag为true,在main func中,有一个while循环,比如while (actor.flag == false) {}
,但是不行,是死循环:-/
所以,请多多指教。
如果你需要在 akka 中进行同步调用,请使用 ask 模式。喜欢
Await.result(ping ? "ping")
另外,创建actor最好使用actor系统
import akka.actor.{ActorRef, Props, Actor, ActorSystem}
import akka.pattern.ask
import akka.util.Timeout
import scala.concurrent.Await
import scala.concurrent.duration._
import scala.concurrent.ExecutionContext.Implicits.global
object Test extends App {
implicit val timeout = Timeout(3 second)
val system = ActorSystem("ActorSystem")
class Pong extends Actor {
def receive: Receive = {
case "Ping" =>
println("ping")
context.stop(self)
}
}
lazy val pong = system.actorOf(Props(new Pong), "Pong")
val x = pong.ask("Ping")
val res = Await.result(x, timeout.duration)
println("????")
system.shutdown()
}
例如
import scala.actors.Actor
import scala.actors.Actor._
object Main {
class Pong extends Actor {
def act() {
var pongCount = 0
while (true) {
receive {
case "Ping" =>
if (pongCount % 1000 == 0)
Console.println("Pong: ping "+pongCount)
sender ! "Pong"
pongCount = pongCount + 1
case "Stop" =>
Console.println("Pong: stop")
exit()
}
}
}
}
class Ping(count: Int, pong: Actor) extends Actor {
def act() {
var pingsLeft = count - 1
pong ! "Ping"
while (true) {
receive {
case "Pong" =>
if (pingsLeft % 1000 == 0)
Console.println("Ping: pong")
if (pingsLeft > 0) {
pong ! "Ping"
pingsLeft -= 1
} else {
Console.println("Ping: stop")
pong ! "Stop"
exit()
}
}
}
}
}
def main(args: Array[String]): Unit = {
val pong = new Pong
val ping = new Ping(100000, pong)
ping.start
pong.start
println("???")
}
}
我尝试打印“???”在两个演员调用 exit() 之后,但现在它在 "Ping: Stop" 和 "Pong stop"
之前打印我试过在actor中有一个flag,当actor是运行时flag为false,当actor停止时flag为true,在main func中,有一个while循环,比如while (actor.flag == false) {}
,但是不行,是死循环:-/
所以,请多多指教。
如果你需要在 akka 中进行同步调用,请使用 ask 模式。喜欢
Await.result(ping ? "ping")
另外,创建actor最好使用actor系统
import akka.actor.{ActorRef, Props, Actor, ActorSystem}
import akka.pattern.ask
import akka.util.Timeout
import scala.concurrent.Await
import scala.concurrent.duration._
import scala.concurrent.ExecutionContext.Implicits.global
object Test extends App {
implicit val timeout = Timeout(3 second)
val system = ActorSystem("ActorSystem")
class Pong extends Actor {
def receive: Receive = {
case "Ping" =>
println("ping")
context.stop(self)
}
}
lazy val pong = system.actorOf(Props(new Pong), "Pong")
val x = pong.ask("Ping")
val res = Await.result(x, timeout.duration)
println("????")
system.shutdown()
}