1 /* 2 * Copyright (c) 2016, 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 static jdk.test.lib.Asserts.assertEquals; 28 import static jdk.test.lib.Asserts.assertFalse; 29 import static jdk.test.lib.Asserts.assertNotNull; 30 import static jdk.test.lib.Asserts.assertTrue; 31 32 import java.util.List; 33 34 import jdk.jfr.Event; 35 import jdk.jfr.Recording; 36 import jdk.jfr.consumer.RecordedEvent; 37 import jdk.jfr.consumer.RecordedMethod; 38 import jdk.jfr.consumer.RecordedFrame; 39 import jdk.jfr.consumer.RecordedStackTrace; 40 import jdk.test.lib.jfr.Events; 41 42 43 /** 44 * @test 45 * @key jfr 46 * 47 * @library /lib / 48 * @run main/othervm jdk.jfr.api.consumer.TestRecordedMethodDescriptor 49 */ 50 public final class TestRecordedMethodDescriptor { 51 52 private static boolean isMainMethodDescriptorRecorded; 53 private static final String MAIN_METHOD_DESCRIPTOR = "([Ljava/lang/String;)V"; 54 private static final String MAIN_METHOD_NAME = "main"; 55 56 public static void main(String[] args) throws Throwable { 57 Recording recording = new Recording(); 58 recording.enable(MyEvent.class).withStackTrace(); 59 recording.start(); 60 61 MyEvent event = new MyEvent(); 62 event.begin(); 63 event.end(); 64 event.commit(); 65 recording.stop(); 66 67 List<RecordedEvent> recordedEvents = Events.fromRecording(recording); 68 assertEquals(1, recordedEvents.size(), "Expected one event"); 69 RecordedEvent recordedEvent = recordedEvents.get(0); 70 71 RecordedStackTrace stacktrace = recordedEvent.getStackTrace(); 72 List<RecordedFrame> frames = stacktrace.getFrames(); 73 assertFalse(frames.isEmpty(), "Stacktrace frames was empty"); 74 for (RecordedFrame frame : frames) { 75 analyzeRecordedMethodDescriptor(frame.getMethod()); 76 } 77 78 assertTrue(isMainMethodDescriptorRecorded, "main() method descriptor has never been recorded"); 79 } 80 81 private static void analyzeRecordedMethodDescriptor(RecordedMethod method) { 82 83 String descr = method.getDescriptor(); 84 assertNotNull(descr, "Method descriptor is null"); 85 String name = method.getName(); 86 assertNotNull(name, "Method name is null"); 87 88 if (name.equals(MAIN_METHOD_NAME) && descr.equals(MAIN_METHOD_DESCRIPTOR)) { 89 assertFalse(isMainMethodDescriptorRecorded, "main() method descriptor already recorded"); 90 isMainMethodDescriptorRecorded = true; 91 } 92 } 93 94 public static class MyEvent extends Event { 95 } 96 97 }