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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package jdk.jfr.event.runtime; 25 26 import static jdk.test.lib.Asserts.assertTrue; 27 28 import java.nio.file.Paths; 29 import java.time.Duration; 30 import java.util.concurrent.CountDownLatch; 31 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedEvent; 34 import jdk.test.lib.jfr.EventNames; 35 import jdk.test.lib.jfr.Events; 36 import jdk.test.lib.thread.TestThread; 37 import jdk.test.lib.thread.XRun; 38 39 /** 40 * @test TestJavaMonitorInflateEvent 41 * @key jfr 42 * @requires vm.hasJFR 43 * @library /test/lib 44 * @run main/othervm jdk.jfr.event.runtime.TestJavaMonitorInflateEvent 45 */ 46 public class TestJavaMonitorInflateEvent { 47 48 private static final String FIELD_KLASS_NAME = "monitorClass.name"; 49 private static final String FIELD_ADDRESS = "address"; 50 private static final String FIELD_CAUSE = "cause"; 51 52 private static final String EVENT_NAME = EventNames.JavaMonitorInflate; 53 private static final long WAIT_TIME = 123456; 54 55 static class Lock { 56 } 57 main(String[] args)58 public static void main(String[] args) throws Exception { 59 Recording recording = new Recording(); 60 recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0)); 61 final Lock lock = new Lock(); 62 final CountDownLatch latch = new CountDownLatch(1); 63 // create a thread that waits 64 TestThread waitThread = new TestThread(new XRun() { 65 @Override 66 public void xrun() throws Throwable { 67 synchronized (lock) { 68 latch.countDown(); 69 lock.wait(WAIT_TIME); 70 } 71 } 72 }); 73 try { 74 recording.start(); 75 waitThread.start(); 76 latch.await(); 77 synchronized (lock) { 78 lock.notifyAll(); 79 } 80 } finally { 81 waitThread.join(); 82 recording.stop(); 83 } 84 final String thisThreadName = Thread.currentThread().getName(); 85 final String waitThreadName = waitThread.getName(); 86 final String lockClassName = lock.getClass().getName().replace('.', '/'); 87 boolean isAnyFound = false; 88 try { 89 // Find at least one event with the correct monitor class and check the other fields 90 for (RecordedEvent event : Events.fromRecording(recording)) { 91 assertTrue(EVENT_NAME.equals(event.getEventType().getName()), "mismatched event types?"); 92 // Check recorded inflation event is associated with the Lock class used in the test 93 final String recordedMonitorClassName = Events.assertField(event, FIELD_KLASS_NAME).getValue(); 94 if (!lockClassName.equals(recordedMonitorClassName)) { 95 continue; 96 } 97 // Check recorded thread matches one of the threads in the test 98 final String recordedThreadName = event.getThread().getJavaName(); 99 if (!(recordedThreadName.equals(waitThreadName) || recordedThreadName.equals(thisThreadName))) { 100 continue; 101 } 102 Events.assertField(event, FIELD_ADDRESS).notEqual(0L); 103 Events.assertField(event, FIELD_CAUSE).notNull(); 104 isAnyFound = true; 105 break; 106 } 107 assertTrue(isAnyFound, "Expected an inflation event from test"); 108 } catch (Throwable e) { 109 recording.dump(Paths.get("failed.jfr")); 110 throw e; 111 } finally { 112 recording.close(); 113 } 114 } 115 } 116