| /* |
| * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4661545 |
| * @summary Tests to use an executor to send notifications. |
| * @author Shanliang JIANG |
| * |
| * @run clean NotifExecutorTest |
| * @run build NotifExecutorTest |
| * @run main NotifExecutorTest |
| */ |
| |
| // java imports |
| // |
| import java.io.IOException; |
| import java.util.concurrent.*; |
| |
| // JMX imports |
| // |
| import javax.management.*; |
| import javax.management.remote.*; |
| |
| public class NotifExecutorTest { |
| |
| public static void main(String[] args) throws Exception { |
| System.out.println("Tests to use an executor to send notifications."); |
| |
| final MBeanServer mbs = MBeanServerFactory.createMBeanServer(); |
| final ObjectName mbean = new ObjectName ("Default:name=NotificationEmitter"); |
| final MyListener myLister = new MyListener(); |
| final NotificationListener nullListener = new NotificationListener() { |
| public void handleNotification(Notification n, Object hb) { |
| // nothing |
| } |
| }; |
| final Object[] params = new Object[] {new Integer(nb)}; |
| final String[] signatures = new String[] {"java.lang.Integer"}; |
| |
| // test with null executor |
| System.out.println(">>> Test with a null executor."); |
| mbs.registerMBean(new NotificationEmitter(null), mbean); |
| |
| mbs.addNotificationListener(mbean, myLister, null, null); |
| mbs.addNotificationListener(mbean, nullListener, null, null); |
| |
| mbs.invoke(mbean, "sendNotifications", params, signatures); |
| check(nb, 0); |
| |
| mbs.unregisterMBean(mbean); |
| |
| // test with an executor |
| System.out.println(">>> Test with a executor."); |
| mbs.registerMBean(new NotificationEmitter( |
| new NotifExecutorTest.MyExecutor()), mbean); |
| mbs.addNotificationListener(mbean, myLister, null, null); |
| mbs.addNotificationListener(mbean, nullListener, null, null); |
| |
| mbs.invoke(mbean, "sendNotifications", params, signatures); |
| |
| check(nb, nb*2); |
| |
| // test without listener |
| System.out.println(">>> Test without listener."); |
| |
| mbs.removeNotificationListener(mbean, myLister); |
| mbs.removeNotificationListener(mbean, nullListener); |
| |
| mbs.invoke(mbean, "sendNotifications", params, signatures); |
| check(0, 0); |
| } |
| |
| private static void check(int notifs, int called) throws Exception { |
| // Waiting... |
| synchronized (lock) { |
| for (int i = 0; i < 10; i++) { |
| if (receivedNotifs < notifs) { |
| lock.wait(1000); |
| } |
| } |
| } |
| |
| // Waiting again to ensure no more notifs |
| // |
| Thread.sleep(1000); |
| |
| // checking |
| synchronized (lock) { |
| if (receivedNotifs != notifs) { |
| throw new RuntimeException("The listener expected to receive " + |
| notifs + " notifs, but got " + receivedNotifs); |
| } else { |
| System.out.println(">>> The listener recieved as expected: "+receivedNotifs); |
| } |
| |
| if (calledTimes != called) { |
| throw new RuntimeException("The notif executor should be called " + |
| called + " times, but got " + calledTimes); |
| } else { |
| System.out.println(">>> The executor was called as expected: "+calledTimes); |
| } |
| } |
| |
| // clean |
| receivedNotifs = 0; |
| calledTimes = 0; |
| } |
| |
| |
| //-------------------------- |
| // private classes |
| //-------------------------- |
| private static class MyListener implements NotificationListener { |
| public void handleNotification(Notification notif, Object handback) { |
| synchronized(lock) { |
| if(++receivedNotifs >= nb) { |
| lock.notifyAll(); |
| } |
| } |
| } |
| } |
| |
| public static class NotificationEmitter |
| extends NotificationBroadcasterSupport |
| implements NotificationEmitterMBean { |
| |
| public NotificationEmitter(Executor executor) { |
| super(executor); |
| } |
| |
| /** |
| * Send a Notification object with the specified times. |
| * The sequence number will be from zero to times-1. |
| * |
| * @param nb The number of notifications to send |
| */ |
| public void sendNotifications(Integer nb) { |
| System.out.println(">>> NotificationEmitter: asked to send " + |
| "notifications: " + nb); |
| |
| Notification notif; |
| for (int i = 1; i <= nb.intValue(); i++) { |
| notif = new Notification(null, this, ++seqno); |
| super.sendNotification(notif); |
| } |
| } |
| } |
| |
| public interface NotificationEmitterMBean { |
| public void sendNotifications(Integer nb); |
| } |
| |
| public static class MyExecutor extends ThreadPoolExecutor { |
| public MyExecutor() { |
| super(1, 1, 1L, TimeUnit.MILLISECONDS, |
| new ArrayBlockingQueue(nb*5)); |
| } |
| |
| public synchronized void execute(Runnable job) { |
| synchronized(lock) { |
| calledTimes++; |
| } |
| |
| super.execute(job); |
| } |
| } |
| |
| private static int nb = 10; |
| private static int receivedNotifs = 0; |
| private static int[] lock = new int[0]; |
| private static volatile long seqno; |
| |
| private static int calledTimes = 0; |
| } |