libjava/testsuite/libjava.lang/Thread_Wait_Interrupt.java

   1 // Create two threads waiting on a monitor. Interrupt one of them. Does the
   2 // other wake up correctly?
   3
   4 class Waiter extends Thread
   5 {
   6   Object monitor;
   7   int thread_num;
   8   boolean interrupted = false;
   9   boolean notified = false;
  10
  11   Waiter (Object monitor, int thread_num)
  12   {
  13     this.monitor = monitor;
  14     this.thread_num = thread_num;
  15   }
  16
  17   public void run()
  18   {
  19     synchronized (monitor)
  20       {
  21         System.out.println ("Thread waiting.");
  22         try
  23         {
  24           long start = System.currentTimeMillis();
  25           monitor.wait(1000);
  26           long time = System.currentTimeMillis() - start;
  27           if (time > 990)
  28             System.out.println ("Error: wait on thread " + thread_num
  29                                 + " timed out.");
  30           else
  31             notified = true;
  32         }
  33         catch (InterruptedException x)
  34         {
  35           interrupted = true;
  36         }
  37       }
  38
  39   }
  40 }
  41
  42 public class Thread_Wait_Interrupt
  43 {
  44   public static void main(String args[])
  45   {
  46     Object monitor = new Object();
  47     Waiter w1 = new Waiter(monitor, 1);
  48     Waiter w2 = new Waiter(monitor, 2);
  49     w1.start();
  50     w2.start();
  51     try
  52     {
  53       Thread.sleep(250);
  54
  55       synchronized (monitor)
  56       {
  57         w1.interrupt();
  58         monitor.notify();
  59       }
  60
  61       w1.join();
  62       w2.join();
  63       System.out.println("join ok");
  64       System.out.println("Thread 1 " +
  65                          (w1.interrupted ? "interrupted ok" : "error"));
  66       System.out.println("Thread 2 " +
  67                          (w2.notified ? "notified ok" : "error"));
  68
  69     }
  70     catch (InterruptedException x)
  71     {
  72       System.out.println (x);
  73     }
  74   }
  75 }