--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/consumer/filestream/TestOrdered.java Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,152 @@
+/*
+ * 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;
+ }
+ }
+}