--- /dev/null 2017-11-09 09:38:01.297999907 +0100 +++ new/test/jdk/jdk/jfr/event/runtime/TestThreadStartEndEvents.java 2018-04-09 18:33:11.162914316 +0200 @@ -0,0 +1,137 @@ +/* + * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package jdk.jfr.event.runtime; + +import java.time.Duration; +import java.util.List; +import java.util.concurrent.CountDownLatch; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.test.lib.jfr.EventNames; +import jdk.test.lib.jfr.Events; + +/* + * @test + * @key jfr + * @library /test/lib + * @run main/othervm jdk.jfr.event.runtime.TestThreadStartEndEvents + */ + +/** + * Starts and stops a number of threads in order. + * Verifies that events are in the same order. + */ +public class TestThreadStartEndEvents { + private final static String EVENT_NAME_THREAD_START = EventNames.ThreadStart; + private final static String EVENT_NAME_THREAD_END = EventNames.ThreadEnd; + private static final String THREAD_NAME_PREFIX = "TestThread-"; + + public static void main(String[] args) throws Throwable { + // Test Java Thread Start event + Recording recording = new Recording(); + recording.enable(EVENT_NAME_THREAD_START).withThreshold(Duration.ofMillis(0)); + recording.enable(EVENT_NAME_THREAD_END).withThreshold(Duration.ofMillis(0)); + recording.start(); + LatchedThread[] threads = startThreads(); + stopThreads(threads); + recording.stop(); + + int currThreadIndex = 0; + long currentThreadId = Thread.currentThread().getId(); + List events = Events.fromRecording(recording); + Events.hasEvents(events); + for (RecordedEvent event : events) { + System.out.println("Event:" + event); + if (event.getThread().getJavaThreadId() != currentThreadId) { + continue; + } + // Threads should be started and stopped in the correct order. + Events.assertEventThread(event, threads[currThreadIndex % threads.length]); + String eventName = currThreadIndex < threads.length ? EVENT_NAME_THREAD_START : EVENT_NAME_THREAD_END; + if (!eventName.equals(event.getEventType().getName())) { + throw new Exception("Expected event of tyoe " + eventName + " but got " + event.getEventType().getName()); + } + currThreadIndex++; + } + } + + private static LatchedThread[] startThreads() { + LatchedThread threads[] = new LatchedThread[10]; + ThreadGroup threadGroup = new ThreadGroup("TestThreadGroup"); + for (int i = 0; i < threads.length; i++) { + threads[i] = new LatchedThread(threadGroup, THREAD_NAME_PREFIX + i); + threads[i].startThread(); + System.out.println("Started thread id=" + threads[i].getId()); + } + return threads; + } + + private static void stopThreads(LatchedThread[] threads) { + for (LatchedThread thread : threads) { + thread.stopThread(); + while (thread.isAlive()) { + try { + Thread.sleep(5); + } catch (InterruptedException e) { + e.printStackTrace(); + } + } + } + } + + private static class LatchedThread extends Thread { + private final CountDownLatch start = new CountDownLatch(1); + private final CountDownLatch stop = new CountDownLatch(1); + + public LatchedThread(ThreadGroup threadGroup, String name) { + super(threadGroup, name); + } + + public void run() { + start.countDown(); + try { + stop.await(); + } catch (InterruptedException e) { + e.printStackTrace(); + } + } + + public void startThread() { + this.start(); + try { + start.await(); + } catch (InterruptedException e) { + e.printStackTrace(); + } + } + + public void stopThread() { + stop.countDown(); + } + } + +}