diff -r 2c3cc4b01880 -r c16ac7a2eba4 test/jdk/jdk/jfr/api/consumer/streaming/TestChunkGap.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/jdk/jdk/jfr/api/consumer/streaming/TestChunkGap.java Wed Oct 30 19:43:52 2019 +0100 @@ -0,0 +1,111 @@ +/* + * 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.time.Instant; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.atomic.AtomicInteger; + +import jdk.jfr.Event; +import jdk.jfr.Recording; +import jdk.jfr.consumer.EventStream; + +/** + * @test + * @summary Tests that a stream can gracefully handle chunk being removed in the + * middle + * @key jfr + * @requires vm.hasJFR + * @library /test/lib + * @run main/othervm jdk.jfr.api.consumer.streaming.TestFilledChunks + */ +public class TestChunkGap { + + static class StartEvent extends Event { + } + + static class TestGapEvent extends Event { + } + + static class EndEvent extends Event { + } + + private final static AtomicInteger count = new AtomicInteger(0); + + public static void main(String... args) throws Exception { + + CountDownLatch gap = new CountDownLatch(1); + CountDownLatch receivedEvent = new CountDownLatch(1); + + try (EventStream s = EventStream.openRepository()) { + try (Recording r1 = new Recording()) { + s.setStartTime(Instant.EPOCH); + s.onEvent(e -> { + System.out.println(e); + receivedEvent.countDown(); + try { + gap.await(); + } catch (InterruptedException e1) { + e1.printStackTrace(); + } + count.incrementAndGet(); + if (e.getEventType().getName().equals(EndEvent.class.getName())) { + s.close(); + } + }); + s.startAsync(); + r1.start(); + StartEvent event1 = new StartEvent(); + event1.commit(); + receivedEvent.await(); + r1.stop(); + + // create chunk that is removed + try (Recording r2 = new Recording()) { + r2.enable(TestGapEvent.class); + r2.start(); + TestGapEvent event2 = new TestGapEvent(); + event2.commit(); + r2.stop(); + } + gap.countDown(); + try (Recording r3 = new Recording()) { + r3.enable(EndEvent.class); + r3.start(); + EndEvent event3 = new EndEvent(); + event3.commit(); + r3.stop(); + + s.awaitTermination(); + if (count.get() != 2) { + throw new AssertionError("Expected 2 event, but got " + count); + } + } + } + } + } + +}