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// Create two threads waiting on a monitor. Interrupt one of them. Does the
// other wake up correctly?
class Waiter extends Thread
{
Object monitor;
int thread_num;
boolean interrupted = false;
boolean notified = false;
Waiter (Object monitor, int thread_num)
{
this.monitor = monitor;
this.thread_num = thread_num;
}
public void run()
{
synchronized (monitor)
{
System.out.println ("Thread waiting.");
try
{
long start = System.currentTimeMillis();
monitor.wait(1000);
long time = System.currentTimeMillis() - start;
if (time > 990)
System.out.println ("Error: wait on thread " + thread_num
+ " timed out.");
else
notified = true;
}
catch (InterruptedException x)
{
interrupted = true;
}
}
}
}
public class Thread_Wait_Interrupt
{
public static void main(String args[])
{
Object monitor = new Object();
Waiter w1 = new Waiter(monitor, 1);
Waiter w2 = new Waiter(monitor, 2);
w1.start();
w2.start();
try
{
Thread.sleep(250);
synchronized (monitor)
{
w1.interrupt();
monitor.notify();
}
w1.join();
w2.join();
System.out.println("join ok");
System.out.println("Thread 1 " +
(w1.interrupted ? "interrupted ok" : "error"));
System.out.println("Thread 2 " +
(w2.notified ? "notified ok" : "error"));
}
catch (InterruptedException x)
{
System.out.println (x);
}
}
}
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