1 /* 2 * Copyright (c) 2014, 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.assertTrue; 30 31 import java.time.Duration; 32 import java.util.List; 33 34 import javax.script.ScriptEngine; 35 import javax.script.ScriptEngineManager; 36 37 import jdk.jfr.Event; 38 import jdk.jfr.Recording; 39 import jdk.jfr.consumer.RecordedEvent; 40 import jdk.jfr.consumer.RecordedFrame; 41 import jdk.jfr.consumer.RecordedStackTrace; 42 import jdk.test.lib.jfr.Events; 43 44 45 /** 46 * @test 47 * @key jfr 48 * 49 * 50 * @library /lib / 51 * 52 53 * 54 * @run main/othervm jdk.jfr.api.consumer.TestHiddenMethod 55 */ 56 public final class TestHiddenMethod { 57 58 public static void main(String[] args) throws Throwable { 59 Recording recording = new Recording(); 60 recording.enable(MyEvent.class).withThreshold(Duration.ofMillis(0)); 61 recording.start(); 62 63 // Commit event with hidden methods 64 ScriptEngineManager manager = new ScriptEngineManager(); 65 ScriptEngine engine = manager.getEngineByName("nashorn"); 66 engine.eval( 67 "function emit() {" 68 + " print('About to emit event from Javascript');" 69 + " var TestEvent = Java.type(\"jdk.jfr.api.consumer.TestHiddenMethod$MyEvent\");" 70 + " var event = new TestEvent;" 71 + " event.begin();" 72 + " event.end();" 73 + " event.commit();" 74 + " print('Event emitted from Javascript!');" 75 + "}" 76 + "emit();"); 77 78 // Commit event with visible method 79 MyEvent visible = new MyEvent(); 80 visible.begin(); 81 visible.end(); 82 visible.commit(); 83 recording.stop(); 84 85 List<RecordedEvent> events = Events.fromRecording(recording); 86 assertEquals(2, events.size(), "Expected two events"); 87 RecordedEvent hiddenEvent = events.get(0); 88 RecordedEvent visibleEvent = events.get(1); 89 90 System.out.println("hiddenEvent:" + hiddenEvent); 91 System.out.println("visibleEvent:" + visibleEvent); 92 93 assertTrue(hasHiddenStackFrame(hiddenEvent), "No hidden frame in hidden event: " + hiddenEvent); 94 assertFalse(hasHiddenStackFrame(visibleEvent), "Hidden frame in visible event: " + visibleEvent); 95 } 96 97 private static boolean hasHiddenStackFrame(RecordedEvent event) throws Throwable { 98 RecordedStackTrace stacktrace = event.getStackTrace(); 99 List<RecordedFrame> frames = stacktrace.getFrames(); 100 assertFalse(frames.isEmpty(), "Stacktrace frames was empty"); 101 for (RecordedFrame frame : frames) { 102 if (frame.getMethod().isHidden()) { 103 return true; 104 } 105 } 106 return false; 107 } 108 109 public static class MyEvent extends Event { 110 } 111 112 }