1 /*
2 * Copyright (c) 2005, 2015, 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 * @test
26 * @bug 6222826
27 * @summary Test that tasks are cancelled properly when
28 * monitors are started and stopped in a loop.
29 * @author Luis-Miguel Alventosa
30 *
31 * @library /lib/testlibrary
32 *
33 * @build jdk.testlibrary.*
34 * @run clean StartStopTest
35 * @run build StartStopTest
36 * @run main/othervm/timeout=300 StartStopTest 1
37 * @run main/othervm/timeout=300 StartStopTest 2
38 * @run main/othervm/timeout=300 StartStopTest 3
39 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 1
40 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 2
41 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 3
42 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 1
43 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 2
44 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 3
45 */
46
47 import java.util.concurrent.atomic.AtomicInteger;
48 import javax.management.MBeanServer;
49 import javax.management.MBeanServerFactory;
50 import javax.management.Notification;
51 import javax.management.NotificationListener;
52 import javax.management.ObjectName;
53 import javax.management.monitor.CounterMonitor;
54 import javax.management.monitor.GaugeMonitor;
55 import javax.management.monitor.Monitor;
56 import javax.management.monitor.MonitorNotification;
57 import javax.management.monitor.StringMonitor;
58
59 import jdk.testlibrary.Utils;
60
61 public class StartStopTest {
62 static int maxPoolSize;
63 static final AtomicInteger counter = new AtomicInteger();
64
65 // MBean class
66 public class ObservedObject implements ObservedObjectMBean {
67 volatile public boolean called = false;
68 public Integer getInteger() {
69 task("Integer");
70 return 0;
71 }
72 public Double getDouble() {
73 task("Double");
74 return 0.0;
75 }
76 public String getString() {
77 task("String");
78 return "";
79 }
80 private void task(String prop) {
81 called = true;
82 final int c = counter.incrementAndGet();
83 echo("\tTASK [" + c + "] in get" + prop);
84 }
85 }
86
87 // MBean interface
88 public interface ObservedObjectMBean {
89 public Integer getInteger();
90 public Double getDouble();
91 public String getString();
92 }
93
94 /**
95 * Run test
96 */
97 public int runTest(int monitorType) throws Exception {
98
99 int nTasks = maxPoolSize + 2;
100 ObjectName[] mbeanNames = new ObjectName[nTasks];
101 ObservedObject[] monitored = new ObservedObject[nTasks];
102 ObjectName[] monitorNames = new ObjectName[nTasks];
103 Monitor[] monitor = new Monitor[nTasks];
104 String[] attributes = { "Integer", "Double", "String" };
105
106 try {
107 echo(">>> CREATE MBeanServer");
108 MBeanServer server = MBeanServerFactory.newMBeanServer();
109
110 String domain = server.getDefaultDomain();
111
112 for (int i = 0; i < nTasks; i++) {
113 mbeanNames[i] =
114 new ObjectName(":type=ObservedObject,instance=" + (i + 1));
115 monitored[i] = new ObservedObject();
116 echo(">>> CREATE ObservedObject = " + mbeanNames[i].toString());
117 server.registerMBean(monitored[i], mbeanNames[i]);
118 switch (monitorType) {
119 case 1:
120 monitorNames[i] = new ObjectName(":type=CounterMonitor," +
121 "instance=" + (i + 1));
122 monitor[i] = new CounterMonitor();
123 break;
124 case 2:
125 monitorNames[i] = new ObjectName(":type=GaugeMonitor," +
126 "instance=" + (i + 1));
127 monitor[i] = new GaugeMonitor();
128 break;
129 case 3:
130 monitorNames[i] = new ObjectName(":type=StringMonitor," +
131 "instance=" + (i + 1));
132 monitor[i] = new StringMonitor();
133 break;
134 default:
135 echo("Unsupported monitor type");
136 return 1;
137 }
138 echo(">>> CREATE Monitor = " + monitorNames[i].toString());
139 server.registerMBean(monitor[i], monitorNames[i]);
140 monitor[i].addObservedObject(mbeanNames[i]);
141 monitor[i].setObservedAttribute(attributes[monitorType-1]);
142 monitor[i].setGranularityPeriod(50);
143 }
144
145 for (int j = 0; j < 2; j++) {
146 echo(">>> Start MONITORS");
147 for (int i = 0; i < nTasks; i++)
148 monitor[i].start();
149 echo(">>> MONITORS started");
150 doSleep(500);
151 echo(">>> Check FLAGS true");
152 for (int i = 0; i < nTasks; i++)
153 if (!monitored[i].called) {
154 echo("KO: At least one attribute was not called");
155 return 1;
156 }
157 echo(">>> FLAGS checked true");
158 echo(">>> Stop MONITORS");
159 for (int i = 0; i < nTasks; i++)
160 monitor[i].stop();
161 echo(">>> MONITORS stopped");
162 doSleep(500);
163 echo(">>> Set FLAGS to false");
164 for (int i = 0; i < nTasks; i++)
165 monitored[i].called = false;
166 echo(">>> FLAGS set to false");
167 echo(">>> Check FLAGS remain false");
168 for (int i = 0; i < nTasks; i++)
169 if (monitored[i].called) {
170 echo("KO: At least one attribute " +
171 "continued to get called");
172 return 1;
173 }
174 echo(">>> FLAGS checked false");
175 }
176 } finally {
177 for (int i = 0; i < nTasks; i++)
178 if (monitor[i] != null)
179 monitor[i].stop();
180 }
181
182 return 0;
183 }
184
185 /*
186 * Print message
187 */
188 private static void echo(String message) {
189 System.out.println(message);
190 }
191
192 /*
193 * Standalone entry point.
194 *
195 * Run the test and report to stdout.
196 */
197 public static void main (String args[]) throws Exception {
198 Integer size = Integer.getInteger("jmx.x.monitor.maximum.pool.size");
199 if (size == null) {
200 maxPoolSize = 10;
201 echo(">>> MAXIMUM POOL SIZE = 10 [default value]");
202 } else {
203 maxPoolSize = size.intValue() < 1 ? 1 : size.intValue();
204 echo(">>> MAXIMUM POOL SIZE = " + maxPoolSize);
205 }
206 StartStopTest test = new StartStopTest();
207 int error = test.runTest(Integer.parseInt(args[0]));
208 if (error > 0) {
209 echo(">>> Unhappy Bye, Bye!");
210 throw new IllegalStateException(
211 "Test FAILED: Unexpected Maximum Pool Size Overflow!");
212 } else {
213 echo(">>> Happy Bye, Bye!");
214 }
215 }
216
217 private static void doSleep(long ms) throws Exception {
218 Thread.sleep(Utils.adjustTimeout(ms));
219 }
220 }