1 /* 2 * Copyright (c) 2013, 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 package jdk.jfr.api.consumer; 26 27 import java.util.List; 28 29 import jdk.jfr.Recording; 30 import jdk.jfr.consumer.RecordedEvent; 31 import jdk.jfr.consumer.RecordedThreadGroup; 32 import jdk.test.lib.Asserts; 33 import jdk.test.lib.jfr.Events; 34 import jdk.test.lib.jfr.SimpleEvent; 35 36 /* 37 * @test 38 * @summary Tests getParent method in RecordedThreadGroup 39 * @key jfr 40 * @library /test/lib 41 * @run main/othervm jdk.jfr.api.consumer.TestRecordedThreadGroupParent 42 */ 43 public class TestRecordedThreadGroupParent { 44 45 public static void main(String[] args) throws Exception { 46 ThreadGroup beforeStartGroup = new ThreadGroup(new ThreadGroup(new ThreadGroup("Grandfather"), "Father"), "Son"); 47 Thread beforeThread = new Thread(beforeStartGroup, () -> new SimpleEvent().commit(), "Before Recording Start"); 48 49 try (Recording r = new Recording()) { 50 r.enable(SimpleEvent.class).withoutStackTrace(); 51 r.start(); 52 beforeThread.start(); 53 ThreadGroup afterStartGroup = new ThreadGroup(new ThreadGroup(new ThreadGroup("Grandmother"), "Mother"), "Daughter"); 54 Thread afterThread = new Thread(afterStartGroup, () -> new SimpleEvent().commit(), "After Recording Start"); 55 afterThread.start(); 56 57 beforeThread.join(); 58 afterThread.join(); 59 60 r.stop(); 61 62 List<RecordedEvent> events = Events.fromRecording(r); 63 Events.hasEvents(events); 64 for (RecordedEvent e : events) { 65 System.out.println(e); 66 switch (e.getThread().getJavaName()) { 67 case "Before Recording Start": 68 assetrThreadGroupParents(beforeStartGroup, e.getThread().getThreadGroup()); 69 break; 70 case "After Recording Start": 71 assetrThreadGroupParents(afterStartGroup, e.getThread().getThreadGroup()); 72 break; 73 default: 74 Asserts.fail("Unexpected thread found " + e.getThread().getJavaName()); 75 } 76 } 77 } 78 } 79 80 private static void assetrThreadGroupParents(ThreadGroup realGroup, RecordedThreadGroup recordedGroup) { 81 if (recordedGroup == null && realGroup == null) { 82 return; // root 83 } 84 Asserts.assertNotNull(recordedGroup, "Parent thread group should not be null"); 85 Asserts.assertEquals(realGroup.getName(), recordedGroup.getName(), "Parent thread group names don't match"); 86 assetrThreadGroupParents(realGroup.getParent(), recordedGroup.getParent()); 87 } 88 }