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.event; 26 27 import java.time.Duration; 28 import java.util.ArrayList; 29 import java.util.List; 30 31 import jdk.jfr.Recording; 32 import jdk.jfr.consumer.RecordedEvent; 33 import jdk.test.lib.Asserts; 34 import jdk.test.lib.jfr.CommonHelper; 35 import jdk.test.lib.jfr.EventNames; 36 import jdk.test.lib.jfr.Events; 37 import jdk.test.lib.jfr.SimpleEvent; 38 39 /** 40 * @test 41 * @summary Test for RecordedEvent.getDuration() 42 * @key jfr 43 * @requires vm.hasJFR 44 * @library /test/lib 45 * @run main/othervm jdk.jfr.api.event.TestGetDuration 46 */ 47 public class TestGetDuration { 48 49 private static final int DURATIONAL_EVENT_ID = 1; 50 private static final int INSTANT_EVENT_ID = 2; 51 main(String[] args)52 public static void main(String[] args) throws Exception { 53 verifyCustomEvents(); 54 verifyNativeEvents(); 55 } 56 verifyCustomEvents()57 private static void verifyCustomEvents() throws Exception { 58 boolean fastTimeEnabled = CommonHelper.hasFastTimeEnabled(); 59 System.out.println("Fast time enabled: " + fastTimeEnabled); 60 Recording r = new Recording(); 61 r.enable(SimpleEvent.class).withoutStackTrace(); 62 r.enable(EventNames.CPUTimeStampCounter); // for debugging purposes 63 r.start(); 64 65 SimpleEvent durational = new SimpleEvent(); 66 durational.begin(); 67 durational.id = DURATIONAL_EVENT_ID; 68 if (!fastTimeEnabled) { 69 // if we have a low resolution clock sleep until time changes 70 CommonHelper.waitForSystemCurrentMillisToChange(); 71 } 72 durational.end(); 73 durational.commit(); 74 75 SimpleEvent instant = new SimpleEvent(); 76 instant.id = INSTANT_EVENT_ID; 77 instant.commit(); 78 79 r.stop(); 80 81 List<RecordedEvent> recordedEvents = Events.fromRecording(r); 82 List<RecordedEvent> testEvents = new ArrayList<>(); 83 for (RecordedEvent e : recordedEvents) { 84 System.out.println(e); // for debugging time related issues 85 if (!e.getEventType().getName().equals(EventNames.CPUTimeStampCounter)) { 86 testEvents.add(e); 87 } 88 } 89 Events.hasEvents(testEvents); 90 for (RecordedEvent re : testEvents) { 91 int id = re.getValue("id"); 92 Asserts.assertEquals(re.getDuration(), Duration.between(re.getStartTime(), re.getEndTime())); 93 switch (id) { 94 case DURATIONAL_EVENT_ID: 95 Asserts.assertTrue(!re.getDuration().isNegative() && !re.getDuration().isZero()); 96 break; 97 case INSTANT_EVENT_ID: 98 Asserts.assertTrue(re.getDuration().isZero()); 99 break; 100 } 101 } 102 } 103 verifyNativeEvents()104 private static void verifyNativeEvents() throws Exception { 105 Recording r = new Recording(); 106 r.enable(EventNames.JVMInformation); 107 r.enable(EventNames.ThreadSleep); 108 r.start(); 109 // Should trigger a sleep event even if we 110 // have a low resolution clock 111 Thread.sleep(200); 112 r.stop(); 113 List<RecordedEvent> recordedEvents = Events.fromRecording(r); 114 Events.hasEvents(recordedEvents); 115 for (RecordedEvent re : recordedEvents) { 116 Asserts.assertEquals(re.getDuration(), Duration.between(re.getStartTime(), re.getEndTime())); 117 switch (re.getEventType().getName()) { 118 case EventNames.JVMInformation: 119 Asserts.assertTrue(re.getDuration().isZero()); 120 break; 121 case EventNames.ThreadSleep: 122 Asserts.assertTrue(!re.getDuration().isNegative() && !re.getDuration().isZero()); 123 break; 124 default: 125 Asserts.fail("Unexpected event: " + re); 126 break; 127 } 128 } 129 } 130 131 } 132