| /* |
| * Copyright (c) 2019, 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.api.consumer.filestream; |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.time.Instant; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.CyclicBarrier; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import jdk.jfr.Event; |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.EventStream; |
| |
| /** |
| * @test |
| * @summary Test EventStream::setOrdered(...) |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.api.consumer.filestream.TestOrdered |
| */ |
| public class TestOrdered { |
| |
| static class OrderedEvent extends Event { |
| } |
| |
| static class Emitter extends Thread { |
| private final CyclicBarrier barrier; |
| |
| public Emitter(CyclicBarrier barrier) { |
| this.barrier = barrier; |
| } |
| |
| @Override |
| public void run() { |
| OrderedEvent e1 = new OrderedEvent(); |
| e1.commit(); |
| try { |
| barrier.await(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw new Error("Unexpected exception in barrier"); |
| } |
| OrderedEvent e2 = new OrderedEvent(); |
| e2.commit(); |
| } |
| } |
| |
| private static final int THREAD_COUNT = 4; |
| private static final boolean[] BOOLEAN_STATES = { false, true }; |
| |
| public static void main(String... args) throws Exception { |
| Path p = makeUnorderedRecording(); |
| |
| testSetOrderedTrue(p); |
| testSetOrderedFalse(p); |
| } |
| |
| private static void testSetOrderedTrue(Path p) throws Exception { |
| for (boolean reuse : BOOLEAN_STATES) { |
| AtomicReference<Instant> timestamp = new AtomicReference<>(Instant.MIN); |
| try (EventStream es = EventStream.openFile(p)) { |
| es.setReuse(reuse); |
| es.setOrdered(true); |
| es.onEvent(e -> { |
| Instant endTime = e.getEndTime(); |
| if (endTime.isBefore(timestamp.get())) { |
| throw new Error("Events are not ordered! Reuse = " + reuse); |
| } |
| timestamp.set(endTime); |
| }); |
| es.start(); |
| } |
| } |
| } |
| |
| private static void testSetOrderedFalse(Path p) throws Exception { |
| for (boolean reuse : BOOLEAN_STATES) { |
| AtomicReference<Instant> timestamp = new AtomicReference<>(Instant.MIN); |
| AtomicBoolean unoreded = new AtomicBoolean(false); |
| try (EventStream es = EventStream.openFile(p)) { |
| es.setReuse(reuse); |
| es.setOrdered(false); |
| es.onEvent(e -> { |
| Instant endTime = e.getEndTime(); |
| if (endTime.isBefore(timestamp.get())) { |
| unoreded.set(true); |
| es.close(); |
| } |
| timestamp.set(endTime); |
| }); |
| es.start(); |
| if (!unoreded.get()) { |
| throw new Exception("Expected at least some events to be out of order! Reuse = " + reuse); |
| } |
| } |
| } |
| } |
| |
| private static Path makeUnorderedRecording() throws Exception { |
| CyclicBarrier barrier = new CyclicBarrier(THREAD_COUNT + 1); |
| |
| try (Recording r = new Recording()) { |
| r.start(); |
| List<Emitter> emitters = new ArrayList<>(); |
| for (int i = 0; i < THREAD_COUNT; i++) { |
| Emitter e = new Emitter(barrier); |
| e.start(); |
| emitters.add(e); |
| } |
| // Thread buffers should now have one event each |
| barrier.await(); |
| // Add another event to each thread buffer, so |
| // events are bound to come out of order when they |
| // are flushed |
| for (Emitter e : emitters) { |
| e.join(); |
| } |
| r.stop(); |
| Path p = Files.createTempFile("recording", ".jfr"); |
| r.dump(p); |
| return p; |
| } |
| } |
| } |