--- /dev/null 2018-06-17 23:18:20.806999507 +0800 +++ new/test/jdk/jfr/api/consumer/TestRecordingInternals.java 2019-01-29 11:00:43.823682576 +0800 @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2018, 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; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.jfr.consumer.RecordedThread; +import jdk.testlibrary.Asserts; +import jdk.testlibrary.jfr.Events; +import jdk.testlibrary.jfr.SimpleEvent; + +/* + * @test + * @summary Tests that chunks are read in order and constant pools from multiple chunks can be read + * @key jfr + * @library /lib/testlibrary + * @run main/othervm jdk.jfr.api.consumer.TestRecordingInternals + */ +public class TestRecordingInternals { + + public static void main(String[] args) throws Throwable { + try (Recording continuous = new Recording()) { + continuous.start(); + for (int i = 0; i < 3; i++) { + // Each new recording will create a new chunk + // with a new set of constant pools, i.e. + // constant pools for threads and thread groups + createProfilingRecording(i); + } + continuous.stop(); + int i = 0; + for (RecordedEvent e : Events.fromRecording(continuous)) { + Integer id = e.getValue("id"); + RecordedThread rt = e.getThread(); + Asserts.assertEquals(id.toString(), rt.getJavaName(), "Thread name should match id"); + Asserts.assertEquals(id.toString(), rt.getThreadGroup().getName(), "Thread group name should match id"); + Asserts.assertEquals(id, Integer.valueOf(i), "Chunks out of order"); + i++; + } + } + } + + private static void createProfilingRecording(int id) throws InterruptedException { + try (Recording r = new Recording()) { + r.start(); + ThreadGroup tg = new ThreadGroup(String.valueOf(id)); + Thread t = new Thread(tg, () -> { + SimpleEvent event = new SimpleEvent(); + event.id = id; + event.commit(); + }, String.valueOf(id)); + t.start(); + t.join(); + r.stop(); + } + } +}