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/*
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* Copyright (c) 2013, 2018, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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package jdk.jfr.event.runtime;
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import static jdk.test.lib.Asserts.assertFalse;
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import static jdk.test.lib.Asserts.assertTrue;
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import java.time.Duration;
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import java.util.List;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.locks.LockSupport;
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import jdk.jfr.Recording;
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import jdk.jfr.consumer.RecordedEvent;
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import jdk.test.lib.jfr.EventNames;
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import jdk.test.lib.jfr.Events;
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import jdk.test.lib.management.ThreadMXBeanTool;
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import jdk.test.lib.thread.TestThread;
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/*
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* @test
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* @key jfr
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* @library /test/lib
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*
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* @run main/othervm jdk.jfr.event.runtime.TestThreadParkEvent
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*/
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public class TestThreadParkEvent {
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private static final String EVENT_NAME = EventNames.ThreadPark;
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private static final long THRESHOLD_MILLIS = 1;
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static class Blocker {
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}
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public static void main(String[] args) throws Throwable {
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final CountDownLatch stop = new CountDownLatch(1);
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final Blocker blocker = new Blocker();
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TestThread parkThread = new TestThread(new Runnable() {
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public void run() {
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while (stop.getCount() > 0) {
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LockSupport.park(blocker);
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}
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}
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});
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Recording recording = new Recording();
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recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(THRESHOLD_MILLIS));
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try {
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recording.start();
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parkThread.start();
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ThreadMXBeanTool.waitUntilBlockingOnObject(parkThread, Thread.State.WAITING, blocker);
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// sleep so we know the event is recorded
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Thread.sleep(2 * THRESHOLD_MILLIS);
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} finally {
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stop.countDown();
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LockSupport.unpark(parkThread);
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parkThread.join();
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recording.stop();
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}
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List<RecordedEvent> events = Events.fromRecording(recording);
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Events.hasEvents(events);
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boolean isAnyFound = false;
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for (RecordedEvent event : events) {
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System.out.println("Event:" + event);
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String klassName = Events.assertField(event, "parkedClass.name").notNull().getValue();
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if (klassName.equals(blocker.getClass().getName().replace('.', '/'))) {
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assertFalse(isAnyFound, "Found more than 1 event");
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isAnyFound = true;
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Events.assertField(event, "timeout").equal(0L);
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Events.assertField(event, "address").notEqual(0L);
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Events.assertEventThread(event, parkThread);
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}
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}
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assertTrue(isAnyFound, "Correct event not found");
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}
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}
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