undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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test/jdk/javax/management/monitor/ThreadPoolTest.java
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test/jdk/javax/management/monitor/ThreadPoolTest.java
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/*
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* Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6222826 6379712
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* @summary Test that all monitors will be well started when sharing
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* a single thread pool.
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* @author Luis-Miguel Alventosa
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*
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* @run clean ThreadPoolTest
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* @run build ThreadPoolTest
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* @run main/othervm/timeout=300 ThreadPoolTest 1
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* @run main/othervm/timeout=300 ThreadPoolTest 2
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* @run main/othervm/timeout=300 ThreadPoolTest 3
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 ThreadPoolTest 1
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 ThreadPoolTest 2
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=5 ThreadPoolTest 3
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 ThreadPoolTest 1
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 ThreadPoolTest 2
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* @run main/othervm/timeout=300 -Djmx.x.monitor.maximum.pool.size=-5 ThreadPoolTest 3
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*/
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import java.util.concurrent.atomic.AtomicInteger;
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import javax.management.MBeanServer;
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import javax.management.MBeanServerFactory;
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import javax.management.Notification;
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import javax.management.NotificationListener;
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import javax.management.ObjectName;
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import javax.management.monitor.CounterMonitor;
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import javax.management.monitor.GaugeMonitor;
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import javax.management.monitor.Monitor;
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import javax.management.monitor.MonitorNotification;
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import javax.management.monitor.StringMonitor;
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public class ThreadPoolTest {
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static int maxPoolSize;
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static int nTasks;
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private static Waiter waiter;
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static final long MAX_WAITING_TIME = 10000;
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// MBean class
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public class ObservedObject implements ObservedObjectMBean {
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private boolean called = false;
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public Integer getInteger() {
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inform("getInteger()");
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return 0;
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}
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public Double getDouble() {
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inform("getDouble()");
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return 0.0;
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}
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public String getString() {
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inform("getString()");
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return "";
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}
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private void inform(String prop) {
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synchronized(waiter) {
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if (!called) {
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called = true;
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waiter.count();
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}
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}
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echo(">>> TASK "+prop+" is called.");
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}
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}
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// MBean interface
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public interface ObservedObjectMBean {
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public Integer getInteger();
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public Double getDouble();
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public String getString();
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}
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/**
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* Run test
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*/
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public int runTest(int monitorType) throws Exception {
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ObjectName[] mbeanNames = new ObjectName[nTasks];
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ObservedObject[] monitored = new ObservedObject[nTasks];
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ObjectName[] monitorNames = new ObjectName[nTasks];
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Monitor[] monitor = new Monitor[nTasks];
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String[] attributes = { "Integer", "Double", "String" };
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try {
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echo(">>> CREATE MBeanServer");
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MBeanServer server = MBeanServerFactory.newMBeanServer();
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String domain = server.getDefaultDomain();
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for (int i = 0; i < nTasks; i++) {
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mbeanNames[i] =
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new ObjectName(":type=ObservedObject,instance=" + (i + 1));
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monitored[i] = new ObservedObject();
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echo(">>> CREATE ObservedObject = " + mbeanNames[i].toString());
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server.registerMBean(monitored[i], mbeanNames[i]);
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switch (monitorType) {
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case 1:
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monitorNames[i] = new ObjectName(":type=CounterMonitor," +
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"instance=" + (i + 1));
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monitor[i] = new CounterMonitor();
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break;
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case 2:
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monitorNames[i] = new ObjectName(":type=GaugeMonitor," +
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"instance=" + (i + 1));
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monitor[i] = new GaugeMonitor();
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break;
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case 3:
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monitorNames[i] = new ObjectName(":type=StringMonitor," +
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"instance=" + (i + 1));
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monitor[i] = new StringMonitor();
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break;
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default:
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echo("Unsupported monitor type");
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return 1;
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}
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echo(">>> CREATE Monitor = " + monitorNames[i].toString());
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server.registerMBean(monitor[i], monitorNames[i]);
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monitor[i].addObservedObject(mbeanNames[i]);
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monitor[i].setObservedAttribute(attributes[monitorType-1]);
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monitor[i].setGranularityPeriod(50);
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monitor[i].start();
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}
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if (!waiter.waiting(MAX_WAITING_TIME)) {
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echo("Error, not all "+nTasks+" monitor tasks are called after "
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+MAX_WAITING_TIME);
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return 1;
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}
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} finally {
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for (int i = 0; i < nTasks; i++)
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if (monitor[i] != null)
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monitor[i].stop();
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}
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echo("All "+nTasks+" monitors are called.");
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return 0;
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}
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/*
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* Print message
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*/
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private static void echo(String message) {
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System.out.println(message);
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}
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/*
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* Standalone entry point.
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*
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* Run the test and report to stdout.
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*/
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public static void main (String args[]) throws Exception {
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Integer size = Integer.getInteger("jmx.x.monitor.maximum.pool.size");
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if (size == null) {
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maxPoolSize = 10;
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echo(">>> MAXIMUM POOL SIZE = 10 [default value]");
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} else {
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maxPoolSize = size.intValue() < 1 ? 1 : size.intValue();
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echo(">>> MAXIMUM POOL SIZE = " + maxPoolSize);
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}
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nTasks = maxPoolSize + 2;
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waiter = new Waiter(nTasks);
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ThreadPoolTest test = new ThreadPoolTest();
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int error = test.runTest(Integer.parseInt(args[0]));
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if (error > 0) {
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echo(">>> Unhappy Bye, Bye!");
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throw new IllegalStateException(
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"Test FAILED: Unexpected Maximum Pool Size Overflow!");
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} else {
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echo(">>> Happy Bye, Bye!");
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}
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}
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private static class Waiter {
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public Waiter(int waitedNB) {
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this.waitedNB = waitedNB;
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}
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public void count() {
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synchronized(this) {
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counted++;
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if (counted == waitedNB) {
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this.notifyAll();
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}
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}
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}
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public boolean waiting(long timeout) {
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final long startTime = System.currentTimeMillis();
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long toWait = timeout;
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synchronized(this) {
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while(counted < waitedNB && toWait > 0) {
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try {
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this.wait(toWait);
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} catch (InterruptedException ire) {
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break;
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}
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toWait = timeout -
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(System.currentTimeMillis() - startTime);
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}
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}
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return counted == waitedNB;
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}
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private int waitedNB;
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private int counted = 0;
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}
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}
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