1 /* 2 * Copyright (c) 2016, 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.assertTrue; 29 30 import java.nio.file.Paths; 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 TestJavaMonitorInflateEvent 43 * @key jfr 44 * @requires vm.hasJFR 45 * @library /test/lib 46 * @run main/othervm jdk.jfr.event.runtime.TestJavaMonitorInflateEvent 47 */ 48 public class TestJavaMonitorInflateEvent { 49 50 private static final String FIELD_KLASS_NAME = "monitorClass.name"; 51 private static final String FIELD_ADDRESS = "address"; 52 private static final String FIELD_CAUSE = "cause"; 53 54 private static final String EVENT_NAME = EventNames.JavaMonitorInflate; 55 private static final long WAIT_TIME = 123456; 56 57 static class Lock { 58 } 59 60 public static void main(String[] args) throws Exception { 61 Recording recording = new Recording(); 62 recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0)); 63 final Lock lock = new Lock(); 64 final CountDownLatch latch = new CountDownLatch(1); 65 // create a thread that waits 66 TestThread waitThread = new TestThread(new XRun() { 67 @Override 68 public void xrun() throws Throwable { 69 synchronized (lock) { 70 latch.countDown(); 71 lock.wait(WAIT_TIME); 72 } 73 } 74 }); 75 try { 76 recording.start(); 77 waitThread.start(); 78 latch.await(); 79 synchronized (lock) { 80 lock.notifyAll(); 81 } 82 } finally { 83 waitThread.join(); 84 recording.stop(); 85 } 86 final String thisThreadName = Thread.currentThread().getName(); 87 final String waitThreadName = waitThread.getName(); 88 final String lockClassName = lock.getClass().getName().replace('.', '/'); 89 boolean isAnyFound = false; 90 try { 91 // Find at least one event with the correct monitor class and check the other fields 92 for (RecordedEvent event : Events.fromRecording(recording)) { 93 assertTrue(EVENT_NAME.equals(event.getEventType().getName()), "mismatched event types?"); 94 // Check recorded inflation event is associated with the Lock class used in the test 95 final String recordedMonitorClassName = Events.assertField(event, FIELD_KLASS_NAME).getValue(); 96 if (!lockClassName.equals(recordedMonitorClassName)) { 97 continue; 98 } 99 // Check recorded thread matches one of the threads in the test 100 final String recordedThreadName = event.getThread().getJavaName(); 101 if (!(recordedThreadName.equals(waitThreadName) || recordedThreadName.equals(thisThreadName))) { 102 continue; 103 } 104 Events.assertField(event, FIELD_ADDRESS).notEqual(0L); 105 Events.assertField(event, FIELD_CAUSE).notNull(); 106 isAnyFound = true; 107 break; 108 } 109 assertTrue(isAnyFound, "Expected an inflation event from test"); 110 } catch (Throwable e) { 111 recording.dump(Paths.get("failed.jfr")); 112 throw e; 113 } finally { 114 recording.close(); 115 } 116 } 117 }