在Scala 2.10中杀死或超时未来

Question

嗨,

我正在使用Scala 2.10和新的期货库,我正在尝试编写一些代码来测试无限循环.我使用a scala.concurrent.Future在单独的线程中使用循环运行代码.然后我想等一会儿做一些测试,然后杀死单独的线程/未来.我已经看过,Await.result但实际上并没有杀死未来.有没有办法超时或杀死新的Scala 2.10期货？

我宁愿不必为这个简单的部分添加外部依赖项,如Akka.

Answer 1

不要在家尝试.

import scala.concurrent._
import scala.concurrent.duration._

class MyCustomExecutionContext extends AnyRef with ExecutionContext {
  import ExecutionContext.Implicits.global
  @volatile var lastThread: Option[Thread] = None
  override def execute(runnable: Runnable): Unit = {
    ExecutionContext.Implicits.global.execute(new Runnable() {
      override def run() {
        lastThread = Some(Thread.currentThread)
        runnable.run()
      }
    })
  }
  override def reportFailure(t: Throwable): Unit = ???
}    

implicit val exec = new MyCustomExecutionContext()
val f = future[Int]{ do{}while(true); 1 }
try {
  Await.result(f, 10 seconds) // 100% cpu here
} catch {
  case e: TimeoutException => 
    println("Stopping...")
    exec.lastThread.getOrElse(throw new RuntimeException("Not started"))
      .stop() // 0% cpu here
}