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 }