/* * Copyright (c) 2005, 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 6222826 * @summary Test that tasks are cancelled properly when * monitors are started and stopped in a loop. * @author Luis-Miguel Alventosa * @library /lib/testlibrary * @build jdk.testlibrary.* * @run clean StartStopTest * @run build StartStopTest * @run main/othervm/timeout=300 StartStopTest 1 * @run main/othervm/timeout=300 StartStopTest 2 * @run main/othervm/timeout=300 StartStopTest 3 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 1 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 2 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 StartStopTest 3 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 1 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 2 * @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 StartStopTest 3 */ import java.util.concurrent.atomic.AtomicInteger; import javax.management.MBeanServer; import javax.management.MBeanServerFactory; import javax.management.Notification; import javax.management.NotificationListener; import javax.management.ObjectName; import javax.management.monitor.CounterMonitor; import javax.management.monitor.GaugeMonitor; import javax.management.monitor.Monitor; import javax.management.monitor.MonitorNotification; import javax.management.monitor.StringMonitor; import jdk.testlibrary.Utils; public class StartStopTest { static int maxPoolSize; static final AtomicInteger counter = new AtomicInteger(); // MBean class public class ObservedObject implements ObservedObjectMBean { volatile public boolean called = false; public Integer getInteger() { task("Integer"); return 0; } public Double getDouble() { task("Double"); return 0.0; } public String getString() { task("String"); return ""; } private void task(String prop) { called = true; final int c = counter.incrementAndGet(); echo("\tTASK [" + c + "] in get" + prop); } } // MBean interface public interface ObservedObjectMBean { public Integer getInteger(); public Double getDouble(); public String getString(); } /** * Run test */ public int runTest(int monitorType) throws Exception { int nTasks = maxPoolSize + 2; ObjectName[] mbeanNames = new ObjectName[nTasks]; ObservedObject[] monitored = new ObservedObject[nTasks]; ObjectName[] monitorNames = new ObjectName[nTasks]; Monitor[] monitor = new Monitor[nTasks]; String[] attributes = { "Integer", "Double", "String" }; try { echo(">>> CREATE MBeanServer"); MBeanServer server = MBeanServerFactory.newMBeanServer(); String domain = server.getDefaultDomain(); for (int i = 0; i < nTasks; i++) { mbeanNames[i] = new ObjectName(":type=ObservedObject,instance=" + (i + 1)); monitored[i] = new ObservedObject(); echo(">>> CREATE ObservedObject = " + mbeanNames[i].toString()); server.registerMBean(monitored[i], mbeanNames[i]); switch (monitorType) { case 1: monitorNames[i] = new ObjectName(":type=CounterMonitor," + "instance=" + (i + 1)); monitor[i] = new CounterMonitor(); break; case 2: monitorNames[i] = new ObjectName(":type=GaugeMonitor," + "instance=" + (i + 1)); monitor[i] = new GaugeMonitor(); break; case 3: monitorNames[i] = new ObjectName(":type=StringMonitor," + "instance=" + (i + 1)); monitor[i] = new StringMonitor(); break; default: echo("Unsupported monitor type"); return 1; } echo(">>> CREATE Monitor = " + monitorNames[i].toString()); server.registerMBean(monitor[i], monitorNames[i]); monitor[i].addObservedObject(mbeanNames[i]); monitor[i].setObservedAttribute(attributes[monitorType-1]); monitor[i].setGranularityPeriod(50); } for (int j = 0; j < 2; j++) { echo(">>> Start MONITORS"); for (int i = 0; i < nTasks; i++) monitor[i].start(); echo(">>> MONITORS started"); doSleep(500); echo(">>> Check FLAGS true"); for (int i = 0; i < nTasks; i++) if (!monitored[i].called) { echo("KO: At least one attribute was not called"); return 1; } echo(">>> FLAGS checked true"); echo(">>> Stop MONITORS"); for (int i = 0; i < nTasks; i++) monitor[i].stop(); echo(">>> MONITORS stopped"); doSleep(500); echo(">>> Set FLAGS to false"); for (int i = 0; i < nTasks; i++) monitored[i].called = false; echo(">>> FLAGS set to false"); echo(">>> Check FLAGS remain false"); for (int i = 0; i < nTasks; i++) if (monitored[i].called) { echo("KO: At least one attribute " + "continued to get called"); return 1; } echo(">>> FLAGS checked false"); } } finally { for (int i = 0; i < nTasks; i++) if (monitor[i] != null) monitor[i].stop(); } return 0; } /* * Print message */ private static void echo(String message) { System.out.println(message); } /* * Standalone entry point. * * Run the test and report to stdout. */ public static void main (String args[]) throws Exception { Integer size = Integer.getInteger("jmx.x.monitor.maximum.pool.size"); if (size == null) { maxPoolSize = 10; echo(">>> MAXIMUM POOL SIZE = 10 [default value]"); } else { maxPoolSize = size.intValue() < 1 ? 1 : size.intValue(); echo(">>> MAXIMUM POOL SIZE = " + maxPoolSize); } StartStopTest test = new StartStopTest(); int error = test.runTest(Integer.parseInt(args[0])); if (error > 0) { echo(">>> Unhappy Bye, Bye!"); throw new IllegalStateException( "Test FAILED: Unexpected Maximum Pool Size Overflow!"); } else { echo(">>> Happy Bye, Bye!"); } } private static void doSleep(long ms) throws Exception { Thread.sleep(Math.round(ms * Utils.TIMEOUT_FACTOR)); } }