| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.event.oldobject; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import jdk.jfr.Recording; |
| import jdk.jfr.consumer.RecordedClass; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.jfr.consumer.RecordedObject; |
| import jdk.jfr.internal.test.WhiteBox; |
| import jdk.test.lib.jfr.EventNames; |
| import jdk.test.lib.jfr.Events; |
| |
| /* |
| * @test |
| * @key jfr |
| * @requires vm.gc == "null" |
| * @library /test/lib /test/jdk |
| * @modules jdk.jfr/jdk.jfr.internal.test |
| * @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestArrayInformation |
| */ |
| public class TestArrayInformation { |
| |
| private static class ArrayLeak { |
| } |
| |
| private static final int CHAIN_DEPTH = 50; |
| private static final int ARRAY_SIZE = 52; |
| private static final int ARRAY_INDEX = 26; |
| |
| public static List<Object> leak = new ArrayList<>(25); |
| |
| public static void main(String[] args) throws Exception { |
| WhiteBox.setWriteAllObjectSamples(true); |
| |
| try (Recording recording = new Recording()) { |
| recording.enable(EventNames.OldObjectSample).withoutStackTrace().with("cutoff", "infinity"); |
| recording.start(); |
| for(int i = 0; i < 25; i++) { |
| leak.add( buildNestedArray(CHAIN_DEPTH)); |
| } |
| recording.stop(); |
| List<RecordedEvent> events = Events.fromRecording(recording); |
| Events.hasEvents(events); |
| verifyObjectArray(events); |
| } |
| } |
| |
| private static void verifyObjectArray(List<RecordedEvent> events) throws Exception { |
| for (RecordedEvent e : events) { |
| RecordedObject object = e.getValue("object"); |
| RecordedClass objectType = object.getValue("type"); |
| RecordedObject referrer = object.getValue("referrer"); |
| System.out.println(objectType.getName()); |
| if (objectType.getName().equals(ArrayLeak[].class.getName())) { |
| for (int i = 0; i < CHAIN_DEPTH; i++) { |
| object = referrer.getValue("object"); |
| if (object == null) { |
| throw new Exception("Expected referrer object"); |
| } |
| objectType = object.getValue("type"); |
| if (!objectType.getName().equals(Object[].class.getName())) { |
| throw new Exception("Expect array class to be named " + Object[].class + " but found " + objectType.getName()); |
| } |
| RecordedObject field = referrer.getValue("field"); |
| if (field != null) { |
| throw new Exception("Didn't expect to find field"); |
| } |
| RecordedObject array = referrer.getValue("array"); |
| if (array == null) { |
| throw new Exception("Expected array object, but got null"); |
| } |
| int index = referrer.getValue("array.index"); |
| if (index != ARRAY_INDEX) { |
| throw new Exception("Expected array index: " + ARRAY_INDEX + ", but got " + index); |
| } |
| int size = referrer.getValue("array.size"); |
| if (size != ARRAY_SIZE) { |
| throw new Exception("Expected array size: " + ARRAY_SIZE + ", but got " + size); |
| } |
| referrer = object.getValue("referrer"); |
| } |
| return; |
| } |
| } |
| throw new Exception("Could not find event with " + ArrayLeak[].class + " as (leak) object"); |
| } |
| |
| private static Object buildNestedArray(int depth) { |
| if (depth > 0) { |
| Object[] array = new Object[ARRAY_SIZE]; |
| array[ARRAY_INDEX] = buildNestedArray(depth - 1); |
| return array; |
| } else { |
| return new ArrayLeak[OldObjects.MIN_SIZE]; |
| } |
| } |
| |
| } |