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.event.oldobject; 27 28 import java.util.ArrayList; 29 import java.util.List; 30 31 import jdk.jfr.Event; 32 import jdk.jfr.Recording; 33 import jdk.jfr.consumer.RecordedClass; 34 import jdk.jfr.consumer.RecordedEvent; 35 import jdk.jfr.consumer.RecordedObject; 36 import jdk.jfr.internal.test.WhiteBox; 37 import jdk.test.lib.jfr.EventNames; 38 import jdk.test.lib.jfr.Events; 39 40 /** 41 * @test 42 * @key jfr 43 * @requires vm.hasJFR 44 * @requires vm.gc == "null" 45 * @library /test/lib /test/jdk 46 * @modules jdk.jfr/jdk.jfr.internal.test 47 * @run main/othervm -XX:TLABSize=2k -XX:-FastTLABRefill jdk.jfr.event.oldobject.TestAllocationTime 48 */ 49 public class TestAllocationTime { 50 51 private static class BeforeLeakEvent extends Event { 52 } 53 private static class AfterLeakEvent extends Event { 54 } 55 private static class Leak { 56 } 57 58 public static List<Leak[]> leak = new ArrayList<>(OldObjects.MIN_SIZE); 59 60 public static void main(String[] args) throws Exception { 61 WhiteBox.setWriteAllObjectSamples(true); 62 63 while(true) { 64 try (Recording recording = new Recording()) { 65 leak.clear(); 66 recording.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "1 h"); 67 recording.start(); 68 69 BeforeLeakEvent be = new BeforeLeakEvent(); 70 be.commit(); 71 72 // Allocate array to trigger sampling code path for interpreter / c1 73 for (int i = 0; i < OldObjects.MIN_SIZE; i++) { 74 leak.add(new Leak[0]); 75 } 76 77 AfterLeakEvent ae = new AfterLeakEvent(); 78 ae.commit(); 79 80 recording.stop(); 81 82 List<RecordedEvent> events = Events.fromRecording(recording); 83 Events.hasEvents(events); 84 RecordedObject sample = findLeak(events, BeforeLeakEvent.class.getName()); 85 if (sample != null) { 86 long beforeTime = find(events, BeforeLeakEvent.class.getName()).getValue("startTime"); 87 long allocationTime = sample.getValue("allocationTime"); 88 long afterTime = find(events, AfterLeakEvent.class.getName()).getValue("startTime"); 89 System.out.println("Before time : " + beforeTime); 90 System.out.println("Allocation time : " + allocationTime); 91 System.out.println("After time : " + afterTime); 92 93 if (allocationTime < beforeTime) { 94 throw new Exception("Allocation should not happen this early"); 95 } 96 if (allocationTime > afterTime) { 97 throw new Exception("Allocation should not happen this late"); 98 } 99 return; // sample ok 100 } 101 } 102 } 103 } 104 105 private static RecordedObject findLeak(List<RecordedEvent> events, String name) throws Exception { 106 for (RecordedEvent e : events) { 107 if (e.getEventType().getName().equals(EventNames.OldObjectSample)) { 108 RecordedObject object = e.getValue("object"); 109 RecordedClass rc = object.getValue("type"); 110 if (rc.getName().equals(Leak[].class.getName())) { 111 return e; 112 } 113 } 114 } 115 return null; 116 } 117 118 private static RecordedEvent find(List<RecordedEvent> events, String name) throws Exception { 119 for (RecordedEvent e : events) { 120 if (e.getEventType().getName().equals(name)) { 121 return e; 122 } 123 } 124 throw new Exception("Could not find event with name " + name); 125 } 126 }