diff -r 2c3cc4b01880 -r c16ac7a2eba4 test/jdk/jdk/jfr/api/consumer/streaming/TestFilledChunks.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/jdk/jdk/jfr/api/consumer/streaming/TestFilledChunks.java Wed Oct 30 19:43:52 2019 +0100 @@ -0,0 +1,82 @@ +/* + * 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.Random; + +import jdk.jfr.Event; +import jdk.jfr.consumer.RecordingStream; + +/** + * @test + * @summary Test that it is possible to iterate over chunk with normal events + * @key jfr + * @requires vm.hasJFR + * @library /test/lib + * @run main/othervm jdk.jfr.api.consumer.streaming.TestFilledChunks + */ +public class TestFilledChunks { + + static class FillEvent extends Event { + String message; + int value; + int id; + } + + static class EndEvent extends Event { + } + + // Will generate about 100 MB of data, or 8-9 chunks + private static final int EVENT_COUNT = 5_000_000; + + public static void main(String... args) throws Exception { + try (RecordingStream rs = new RecordingStream()) { + rs.onEvent(FillEvent.class.getName(), e -> { + int id = e.getInt("id"); + // Some events may get lost due to + // buffer being full. + if (id > EVENT_COUNT / 2) { + rs.close(); + } + }); + rs.startAsync(); + long seed = System.currentTimeMillis(); + System.out.println("Random seed: " + seed); + Random r = new Random(seed); + for (int i = 1; i < EVENT_COUNT; i++) { + FillEvent f = new FillEvent(); + f.message = i % 2 == 0 ? "hello, hello, hello, hello, hello!" : "hi!"; + f.value = r.nextInt(10000); + f.id = i; + f.commit(); + if (i % 1_000_000 == 0) { + System.out.println("Emitted " + i + " events"); + } + } + rs.awaitTermination(); + } + } +}