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/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.api.consumer.recordingstream;
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import java.util.List;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicBoolean;
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import jdk.jfr.Event;
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import jdk.jfr.Recording;
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import jdk.jfr.consumer.RecordedEvent;
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import jdk.jfr.consumer.RecordingStream;
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import jdk.test.lib.jfr.Events;
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/**
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* @test
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* @summary Tests that events are not emitted in handlers
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* @key jfr
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* @requires vm.hasJFR
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* @library /test/lib /test/jdk
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* @build jdk.jfr.api.consumer.recordingstream.EventProducer
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* @run main/othervm jdk.jfr.api.consumer.recordingstream.TestRecursive
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*/
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public class TestRecursive {
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public static class NotRecorded extends Event {
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}
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public static class Recorded extends Event {
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}
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public static class Provoker extends Event {
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}
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public static void main(String... args) throws Exception {
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testSync();
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testAsync();
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testStreamInStream();
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}
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private static void testStreamInStream() throws Exception {
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CountDownLatch latch = new CountDownLatch(1);
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try (Recording r = new Recording()) {
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r.start();
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Recorded r1 = new Recorded(); // 1
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r1.commit();
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try (RecordingStream rs = new RecordingStream()) {
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rs.onEvent(e1 -> {
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streamInStream();
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latch.countDown();
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});
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rs.startAsync();
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Recorded r2 = new Recorded(); // 2
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r2.commit();
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latch.await();
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}
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Recorded r3 = new Recorded(); // 2
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r3.commit();
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r.stop();
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List<RecordedEvent> events = Events.fromRecording(r);
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if (count(events, NotRecorded.class) != 0) {
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throw new Exception("Expected 0 NotRecorded events");
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}
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if (count(events, Recorded.class) != 3) {
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throw new Exception("Expected 3 Recorded events");
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}
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}
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}
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// No events should be recorded in this method
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private static void streamInStream() {
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NotRecorded nr1 = new NotRecorded();
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nr1.commit();
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CountDownLatch latch = new CountDownLatch(1);
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try (RecordingStream rs2 = new RecordingStream()) {
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rs2.onEvent(e2 -> {
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NotRecorded nr2 = new NotRecorded();
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nr2.commit();
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latch.countDown();
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});
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NotRecorded nr3 = new NotRecorded();
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nr3.commit();
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rs2.startAsync();
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// run event in separate thread
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CompletableFuture.runAsync(() -> {
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Provoker p = new Provoker();
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p.commit();
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});
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try {
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latch.await();
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} catch (InterruptedException e) {
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throw new Error("Unexpected interruption", e);
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}
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}
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NotRecorded nr2 = new NotRecorded();
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nr2.commit();
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}
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private static void testSync() throws Exception {
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try (Recording r = new Recording()) {
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r.start();
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EventProducer p = new EventProducer();
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try (RecordingStream rs = new RecordingStream()) {
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Recorded e1 = new Recorded();
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e1.commit();
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rs.onEvent(e -> {
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System.out.println("Emitting NotRecorded event");
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NotRecorded event = new NotRecorded();
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event.commit();
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System.out.println("Stopping event provoker");
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p.kill();
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System.out.println("Closing recording stream");
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rs.close();
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return;
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});
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p.start();
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rs.start();
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Recorded e2 = new Recorded();
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e2.commit();
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}
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r.stop();
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List<RecordedEvent> events = Events.fromRecording(r);
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System.out.println(events);
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if (count(events, NotRecorded.class) != 0) {
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throw new Exception("Expected 0 NotRecorded events");
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}
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if (count(events, Recorded.class) != 2) {
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throw new Exception("Expected 2 Recorded events");
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}
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}
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}
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private static int count(List<RecordedEvent> events, Class<?> eventClass) {
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int count = 0;
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for (RecordedEvent e : events) {
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if (e.getEventType().getName().equals(eventClass.getName())) {
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count++;
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}
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}
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System.out.println(count);
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return count;
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}
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private static void testAsync() throws InterruptedException, Exception {
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CountDownLatch latchOne = new CountDownLatch(1);
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CountDownLatch latchTwo = new CountDownLatch(2);
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AtomicBoolean fail = new AtomicBoolean();
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try (RecordingStream r = new RecordingStream()) {
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r.onEvent(e -> {
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System.out.println(e);
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NotRecorded event = new NotRecorded();
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event.commit();
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if (e.getEventType().getName().equals(Recorded.class.getName())) {
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latchOne.countDown();
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latchTwo.countDown();
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}
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if (e.getEventType().getName().equals(NotRecorded.class.getName())) {
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fail.set(true);
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}
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});
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r.startAsync();
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Recorded e1 = new Recorded();
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e1.commit();
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latchOne.await();
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Recorded e2 = new Recorded();
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e2.commit();
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latchTwo.await();
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if (fail.get()) {
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throw new Exception("Unexpected event found");
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}
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}
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}
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}
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