1 /*
   2  * Copyright (c) 2013, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.event.runtime;
  27 
  28 import static jdk.test.lib.Asserts.assertFalse;
  29 import static jdk.test.lib.Asserts.assertTrue;
  30 
  31 import java.time.Duration;
  32 import java.util.concurrent.CountDownLatch;
  33 
  34 import jdk.jfr.Recording;
  35 import jdk.jfr.consumer.RecordedEvent;
  36 import jdk.test.lib.jfr.EventNames;
  37 import jdk.test.lib.jfr.Events;
  38 import jdk.test.lib.thread.TestThread;
  39 import jdk.test.lib.thread.XRun;
  40 
  41 /**
  42  * @test
  43  * @key jfr
  44  *
  45  * @library /lib /
  46  * @run main/othervm jdk.jfr.event.runtime.TestJavaMonitorWaitEvent
  47  */
  48 public class TestJavaMonitorWaitEvent {
  49 
  50     private final static String EVENT_NAME = EventNames.JavaMonitorWait;
  51     private static final long WAIT_TIME = 123456;
  52 
  53     static class Lock {
  54     }
  55 
  56     static boolean silenceFindBugsNakedNotify;
  57 
  58     public static void main(String[] args) throws Throwable {
  59         Recording recording = new Recording();
  60         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  61 
  62         final Lock lock = new Lock();
  63         final CountDownLatch latch = new CountDownLatch(1);
  64 
  65         TestThread waitThread = new TestThread(new XRun() {
  66             @Override
  67             public void xrun() throws Throwable {
  68                 synchronized (lock) {
  69                     latch.countDown();
  70                     lock.wait(WAIT_TIME);
  71                     silenceFindBugsNakedNotify = false;
  72                 }
  73             }
  74         });
  75 
  76         try {
  77             recording.start();
  78             waitThread.start();
  79             latch.await();
  80             synchronized (lock) {
  81                 silenceFindBugsNakedNotify = true;
  82                 lock.notifyAll();
  83             }
  84         } finally {
  85             waitThread.join();
  86             recording.stop();
  87         }
  88 
  89         boolean isAnyFound = false;
  90         for (RecordedEvent event : Events.fromRecording(recording)) {
  91             System.out.println("Event:" + event);
  92             if ((long)Events.assertField(event, "timeout").getValue() != WAIT_TIME) {
  93                 continue;
  94             }
  95 
  96             assertFalse(isAnyFound, "Found more than 1 event");
  97             isAnyFound = true;
  98             Events.assertEventThread(event, waitThread);
  99             final String lockClassName = lock.getClass().getName().replace('.', '/');
 100             Events.assertField(event, "monitorClass.name").equal(lockClassName);
 101             Events.assertField(event, "address").notEqual(0L);
 102             Events.assertField(event, "timedOut").equal(false);
 103             Events.assertEventThread(event, "notifier", Thread.currentThread());
 104         }
 105         assertTrue(isAnyFound, "Correct event not found");
 106     }
 107 }