1 /*
2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * build        @BUILD_TAG_PLACEHOLDER@
26  *
27  * @COPYRIGHT_MINI_LEGAL_NOTICE_PLACEHOLDER@
28  */
29 
30 import javax.management.ListenerNotFoundException;
31 import javax.management.Notification;
32 import javax.management.NotificationBroadcasterSupport;
33 import javax.management.NotificationFilter;
34 import javax.management.NotificationListener;
35 
36 public class NotificationSender
37         extends NotificationBroadcasterSupport
38         implements NotificationSenderMBean {
39 
sendNotifs(String type, int count)40     public void sendNotifs(String type, int count) {
41         for (int i = 0; i < count; i++) {
42             Notification n = new Notification(type, this, newSeqNo());
43             sendNotification(n);
44         }
45     }
46 
getListenerCount()47     public int getListenerCount() {
48         return listenerCount;
49     }
50 
addNotificationListener(NotificationListener l, NotificationFilter f, Object h)51     public void addNotificationListener(NotificationListener l,
52                                         NotificationFilter f,
53                                         Object h) {
54         super.addNotificationListener(l, f, h);
55         listenerCount++;
56     }
57 
removeNotificationListener(NotificationListener l)58     public void removeNotificationListener(NotificationListener l)
59             throws ListenerNotFoundException {
60         super.removeNotificationListener(l);
61         listenerCount--;
62     }
63 
removeNotificationListener(NotificationListener l, NotificationFilter f, Object h)64     public void removeNotificationListener(NotificationListener l,
65                                            NotificationFilter f,
66                                            Object h)
67             throws ListenerNotFoundException {
68         super.removeNotificationListener(l, f, h);
69         listenerCount--;
70     }
71 
newSeqNo()72     private static long newSeqNo() {
73         return ++seqNo;
74     }
75 
76     private static long seqNo = 0;
77     private int listenerCount = 0;
78 }
79