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.assertTrue; 29 30 import java.nio.file.Files; 31 import java.nio.file.Paths; 32 import java.time.Duration; 33 import java.time.Instant; 34 import java.util.List; 35 import java.util.concurrent.CountDownLatch; 36 import java.util.concurrent.locks.LockSupport; 37 import java.util.function.Consumer; 38 39 import jdk.jfr.Recording; 40 import jdk.jfr.consumer.RecordedEvent; 41 import jdk.test.lib.Asserts; 42 import jdk.test.lib.jfr.EventNames; 43 import jdk.test.lib.jfr.Events; 44 import jdk.test.lib.management.ThreadMXBeanTool; 45 import jdk.test.lib.thread.TestThread; 46 47 /** 48 * @test 49 * @key jfr 50 * 51 * @library /lib / 52 * 53 * @run main/othervm jdk.jfr.event.runtime.TestThreadParkEvent 54 */ 55 56 public class TestThreadParkEvent { 57 private static final String EVENT_NAME = EventNames.ThreadPark; 58 private static final long THRESHOLD_MILLIS = 1; 59 60 static class Blocker { 61 } 62 63 public static void main(String[] args) throws Throwable { 64 testParkNoTimeout(); 65 testParkTimeout(); 66 testParkUntil(); 67 } 68 69 private static void testParkNoTimeout() throws Exception { 70 RecordedEvent event = testPark(x -> LockSupport.park(x), Thread.State.WAITING); 71 Events.assertMissingValue(event, "timeout"); 72 Events.assertMissingValue(event, "until"); 73 } 74 75 private static void testParkTimeout() throws Exception { 76 Duration expected = Duration.ofNanos(1_234_567_890_123L); 77 RecordedEvent event = testPark(x -> LockSupport.parkNanos(x, expected.toNanos()), Thread.State.TIMED_WAITING); 78 Events.assertDuration(event, "timeout", expected); 79 Events.assertMissingValue(event, "until"); 80 } 81 82 private static void testParkUntil() throws Exception { 83 long epochMillis = Instant.now().plusSeconds(1000000).toEpochMilli(); 84 RecordedEvent event = testPark(x -> LockSupport.parkUntil(x, epochMillis), Thread.State.TIMED_WAITING); 85 Events.assertMissingValue(event, "timeout"); 86 Events.assertInstant(event, "until", Instant.ofEpochMilli(epochMillis)); 87 } 88 89 static RecordedEvent testPark(Consumer<Blocker> parkOperation, Thread.State threadState) throws Exception { 90 91 final CountDownLatch stop = new CountDownLatch(1); 92 final Blocker blocker = new Blocker(); 93 TestThread parkThread = new TestThread(new Runnable() { 94 public void run() { 95 while (stop.getCount() > 0) { 96 parkOperation.accept(blocker); 97 } 98 } 99 }); 100 101 Recording recording = new Recording(); 102 recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(THRESHOLD_MILLIS)); 103 try { 104 recording.start(); 105 parkThread.start(); 106 ThreadMXBeanTool.waitUntilBlockingOnObject(parkThread, threadState, blocker); 107 // sleep so we know the event is recorded 108 Thread.sleep(2 * THRESHOLD_MILLIS); 109 } finally { 110 stop.countDown(); 111 LockSupport.unpark(parkThread); 112 parkThread.join(); 113 recording.stop(); 114 } 115 List<RecordedEvent> events = Events.fromRecording(recording); 116 Events.hasEvents(events); 117 RecordedEvent foundEvent = null; 118 for (RecordedEvent event : events) { 119 System.out.println("Event:" + event); 120 String klassName = Events.assertField(event, "parkedClass.name").notNull().getValue(); 121 if (klassName.equals(blocker.getClass().getName().replace('.', '/'))) { 122 Asserts.assertNull(foundEvent , "Found more than 1 event"); 123 Events.assertField(event, "address").notEqual(0L); 124 Events.assertEventThread(event, parkThread); 125 foundEvent = event; 126 } 127 } 128 Asserts.assertNotNull(foundEvent, "Correct event not found"); 129 return foundEvent; 130 } 131 132 }