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 java.util.List; 29 30 import jdk.jfr.Recording; 31 import jdk.jfr.consumer.RecordedClass; 32 import jdk.jfr.consumer.RecordedEvent; 33 import jdk.jfr.consumer.RecordedThread; 34 import jdk.test.lib.Asserts; 35 import jdk.test.lib.jfr.EventNames; 36 import jdk.test.lib.jfr.Events; 37 38 /** 39 * @test 40 * @key jfr 41 * 42 * @library /lib / 43 * @run main/othervm jdk.jfr.event.runtime.TestJavaMonitorWaitTimeOut 44 */ 45 public class TestJavaMonitorWaitTimeOut { 46 47 static final class Lock { 48 49 } 50 51 private static final String THREAD_NAME = "Notifier"; 52 53 static class Notifierhread extends Thread { 54 private final Object lock; 55 56 Notifierhread(Object lock) { 57 super(THREAD_NAME); 58 this.lock = lock; 59 } 60 61 public void run() { 62 synchronized (lock) { 63 lock.notify(); 64 } 65 } 66 } 67 68 public static void main(String[] args) throws Throwable { 69 try (Recording recording = new Recording()) { 70 recording.enable(EventNames.JavaMonitorWait).withoutThreshold().withoutStackTrace(); 71 recording.start(); 72 Lock lock = new Lock(); 73 74 synchronized (lock) { 75 // event without notifier, should be null 76 lock.wait(10); 77 } 78 Notifierhread s = new Notifierhread(lock); 79 80 synchronized (lock) { 81 s.start(); 82 // event with a notifier 83 lock.wait(1_000_000); 84 s.join(); 85 } 86 87 synchronized (lock) { 88 // event without a notifier, should be null 89 lock.wait(11); 90 } 91 recording.stop(); 92 List<RecordedEvent> events = Events.fromRecording(recording); 93 for (RecordedEvent e : events) { 94 if (isWaitEvent(e)) { 95 System.out.println(e); 96 } 97 } 98 assertTimeOutEvent(events, 10, null); 99 assertTimeOutEvent(events, 1_000_000, THREAD_NAME); 100 assertTimeOutEvent(events, 11, null); 101 } 102 } 103 104 private static boolean isWaitEvent(RecordedEvent event) { 105 RecordedClass t = event.getValue("monitorClass"); 106 return t != null && t.getName().equals(Lock.class.getName()); 107 } 108 109 private static void assertTimeOutEvent(List<RecordedEvent> events, long timeout, String expectedThreadName) { 110 for (RecordedEvent e : events) { 111 if (isWaitEvent(e)) { 112 Long l = e.getValue("timeout"); 113 if (l == timeout) { 114 RecordedThread notifier = e.getValue("notifier"); 115 String threadName = null; 116 if (notifier != null) { 117 threadName = notifier.getJavaName(); 118 } 119 Asserts.assertEquals(threadName, expectedThreadName, "Invalid thread"); 120 return; 121 } 122 } 123 } 124 Asserts.fail("Could not find event with monitorClass" + Lock.class.getName()); 125 } 126 }