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