--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/consumer/streaming/TestRemovedChunks.java Fri May 17 18:03:14 2019 +0200
@@ -0,0 +1,116 @@
+/*
+ * 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.consumer.RecordingStream;
+
+/**
+ * @test
+ * @summary Tests that a stream can gracefully handle chunk being removed
+ * @key jfr
+ * @requires vm.hasJFR
+ * @library /test/lib
+ * @run main/othervm jdk.jfr.api.consumer.streaming.TestFilledChunks
+ */
+public class TestRemovedChunks {
+ private final static CountDownLatch parkLatch = new CountDownLatch(1);
+ private final static CountDownLatch removalLatch = new CountDownLatch(1);
+ private final static CountDownLatch IfeelFineLatch = new CountDownLatch(1);
+
+ static class DataEvent extends Event {
+ double double1;
+ double double2;
+ double double3;
+ double double4;
+ double double5;
+ }
+
+ static class ParkStream extends Event {
+ }
+
+ static class IFeelFine extends Event {
+ }
+
+ public static void main(String... args) throws Exception {
+
+ try (RecordingStream s = new RecordingStream()) {
+ s.setMaxSize(20_000_000);
+ s.onEvent(ParkStream.class.getName(), e -> {
+ parkLatch.countDown();
+ await(removalLatch);
+
+ });
+ s.onEvent(IFeelFine.class.getName(), e -> {
+ IfeelFineLatch.countDown();
+ });
+ s.startAsync();
+ emitData(15_000_000);
+ ParkStream ps = new ParkStream();
+ ps.commit();
+ await(parkLatch);
+ // Try to force removal of chunk that is being streamed
+ emitData(50_000_000);
+ removalLatch.countDown();
+ IFeelFine i = new IFeelFine();
+ i.commit();
+ await(IfeelFineLatch);
+ }
+
+ }
+
+ private static void await(CountDownLatch latch) throws Error {
+ try {
+ latch.await();
+ } catch (InterruptedException e1) {
+ throw new Error("Latch interupted");
+ }
+ }
+
+ private static void emitData(int amount) throws InterruptedException {
+ int count = 0;
+ while (amount > 0) {
+ DataEvent de = new DataEvent();
+ // 5 doubles are 40 bytes bytes
+ // and event size, event type, thread,
+ // start time, duration and stack trace about 15 bytes
+ de.double1 = 0.0;
+ de.double2 = 1.0;
+ de.double3 = 2.0;
+ de.double4 = 3.0;
+ de.double5 = 4.0;
+ de.commit();
+ amount -= 55;
+ count++;
+ //
+ if (count % 100_000 == 0) {
+ Thread.sleep(10);
+ }
+ }
+ }
+}