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/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.jfr.event.oldobject;
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import java.util.ArrayList;
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import java.util.List;
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import jdk.jfr.Recording;
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import jdk.jfr.consumer.RecordedEvent;
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import jdk.jfr.internal.test.WhiteBox;
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import jdk.test.lib.jfr.EventNames;
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import jdk.test.lib.jfr.Events;
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/*
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* @test
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* @key jfr
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* @requires vm.gc == "null"
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* @library /test/lib /test/jdk
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* @modules jdk.jfr/jdk.jfr.internal.test
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* @run main/othervm -XX:TLABSize=2k jdk.jfr.event.oldobject.TestListenerLeak
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*/
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public class TestListenerLeak {
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private interface TestListener {
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void onListen();
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}
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static class Stuff {
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}
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static class ListenerThread extends Thread {
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private List<Stuff[]> stuff;
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public ListenerThread(List<Stuff[]> stuff) {
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this.stuff = stuff;
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}
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public void run() {
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listener.add(new TestListener() {
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@Override
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public void onListen() {
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System.out.println(stuff);
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}
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});
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}
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}
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private static List<TestListener> listener = new ArrayList<>();
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public static void main(String[] args) throws Exception {
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WhiteBox.setWriteAllObjectSamples(true);
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try (Recording r = new Recording()) {
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r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");
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r.start();
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listenerLeak();
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r.stop();
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List<RecordedEvent> events = Events.fromRecording(r);
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if (OldObjects.countMatchingEvents(events, Stuff[].class, null, null, -1, "listenerLeak") == 0) {
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throw new Exception("Could not find leak with " + Stuff[].class);
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}
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}
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}
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private static void listenerLeak() throws InterruptedException {
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List<Stuff[]> stuff = new ArrayList<>(OldObjects.MIN_SIZE);
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for (int i = 0; i < OldObjects.MIN_SIZE; i++) {
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// Allocate array to trigger sampling code path for interpreter / c1
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stuff.add(new Stuff[0]);
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}
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ListenerThread t = new ListenerThread(stuff);
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t.start();
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t.join();
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}
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}
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