1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.jfr.api.consumer;
  27 
  28 import jdk.jfr.Recording;
  29 import jdk.jfr.consumer.RecordedEvent;
  30 import jdk.jfr.consumer.RecordedThread;
  31 import jdk.test.lib.Asserts;
  32 import jdk.test.lib.jfr.Events;
  33 import jdk.test.lib.jfr.SimpleEvent;
  34 
  35 /**
  36  * @test
  37  * @summary Tests that chunks are read in order and constant pools from multiple chunks can be read
  38  * @key jfr
  39  *
  40  * @library /lib /
  41  * @run main/othervm jdk.jfr.api.consumer.TestRecordingInternals
  42  */
  43 public class TestRecordingInternals {
  44 
  45     public static void main(String[] args) throws Throwable {
  46         try (Recording continuous = new Recording()) {
  47             continuous.start();
  48             for (int i = 0; i < 3; i++) {
  49                 // Each new recording will create a new chunk
  50                 // with a new set of constant pools, i.e.
  51                 // constant pools for threads and thread groups
  52                 createProfilingRecording(i);
  53             }
  54             continuous.stop();
  55             int i = 0;
  56             for (RecordedEvent e : Events.fromRecording(continuous)) {
  57                 Integer id = e.getValue("id");
  58                 RecordedThread rt = e.getThread();
  59                 Asserts.assertEquals(id.toString(), rt.getJavaName(), "Thread name should match id");
  60                 Asserts.assertEquals(id.toString(), rt.getThreadGroup().getName(), "Thread group name should match id");
  61                 Asserts.assertEquals(id, Integer.valueOf(i), "Chunks out of order");
  62                 i++;
  63             }
  64         }
  65     }
  66 
  67     private static void createProfilingRecording(int id) throws InterruptedException {
  68         try (Recording r = new Recording()) {
  69             r.start();
  70             ThreadGroup tg = new ThreadGroup(String.valueOf(id));
  71             Thread t = new Thread(tg, () -> {
  72                 SimpleEvent event = new SimpleEvent();
  73                 event.id = id;
  74                 event.commit();
  75             }, String.valueOf(id));
  76             t.start();
  77             t.join();
  78             r.stop();
  79         }
  80     }
  81 }