--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/consumer/streaming/TestEmptyChunks.java Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,84 @@
+/*
+ * 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.streaming;
+
+import java.util.concurrent.CountDownLatch;
+
+import jdk.jfr.Event;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordingStream;
+
+/**
+ * @test
+ * @summary Test that it is possible to iterate over chunk without normal events
+ * @key jfr
+ * @requires vm.hasJFR
+ * @library /test/lib
+ * @run main/othervm jdk.jfr.api.consumer.streaming.TestEmptyChunks
+ */
+public class TestEmptyChunks {
+ static class EndEvent extends Event {
+ }
+
+ public static void main(String... args) throws Exception {
+ CountDownLatch end = new CountDownLatch(1);
+ CountDownLatch firstFlush = new CountDownLatch(1);
+ try (RecordingStream es = new RecordingStream()) {
+ es.onEvent(EndEvent.class.getName(), e -> {
+ end.countDown();
+ });
+ es.onFlush(() -> {
+ firstFlush.countDown();
+ });
+ es.startAsync();
+ System.out.println("Invoked startAsync()");
+ // Wait for stream thread to start
+ firstFlush.await();
+ System.out.println("Stream thread active");
+ Recording r1 = new Recording();
+ r1.start();
+ System.out.println("Chunk 1 started");
+ Recording r2 = new Recording();
+ r2.start();
+ System.out.println("Chunk 2 started");
+ Recording r3 = new Recording();
+ r3.start();
+ System.out.println("Chunk 3 started");
+ r2.stop();
+ System.out.println("Chunk 4 started");
+ r3.stop();
+ System.out.println("Chunk 5 started");
+ EndEvent e = new EndEvent();
+ e.commit();
+ end.await();
+ r1.stop();
+ System.out.println("Chunk 5 ended");
+ r1.close();
+ r2.close();
+ r3.close();
+ }
+ }
+}