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 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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,

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package jdk.jfr.event.oldobject;

import java.lang.reflect.Array;

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.Asserts;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

/**

 * @test

 * @key jfr

 * @requires vm.hasJFR

 * @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.TestClassLoaderLeak

 */

public class TestClassLoaderLeak {

    public static List<Object> classObjects = new ArrayList<>(OldObjects.MIN_SIZE);

    public static void main(String[] args) throws Exception {

        WhiteBox.setWriteAllObjectSamples(true);

        try (Recording r = new Recording()) {

            r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");

            r.start();

            TestClassLoader testClassLoader = new TestClassLoader();

            for (Class<?> clazz : testClassLoader.loadClasses(OldObjects.MIN_SIZE / 20)) {

                // Allocate array to trigger sampling code path for interpreter / c1

                for (int i = 0; i < 20; i++) {

                    Object classArray = Array.newInstance(clazz, 20);

                    Array.set(classArray, i, clazz.newInstance());

                    classObjects.add(classArray);

                }

            }

            r.stop();

            List<RecordedEvent> events = Events.fromRecording(r);

            Events.hasEvents(events);

            for (RecordedEvent e : events) {

                RecordedObject object = e.getValue("object");

                RecordedClass rc = object.getValue("type");

                if (rc.getName().contains("TestClass")) {

                    return;

                }

            }

            Asserts.fail("Could not find class leak");

        }

    }

}