/*

 * 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.RecordedEvent;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

/*

 * @test

 * @key jfr

 * @requires vm.gc == "null"

 * @library /test/lib /test/jdk

 * @summary Purpose of this test is to run leak profiler without command line tweaks or WhiteBox hacks until we succeed

 * @run main/othervm jdk.jfr.event.oldobject.TestSanityDefault

 */

public class TestSanityDefault {

    static private class FindMe {

    }

    public static List<FindMe> list = new ArrayList<>(OldObjects.MIN_SIZE);

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

        // Should not use WhiteBox API, we want to execute actual code paths

        // Trigger c2 compilation, so we get sample

        for (long i = 0; i < 100_000_000; i++) {

            allocateFindMe(true);

        }

        // It's hard to get samples with interpreter / C1 so loop until we do

        while (true) {

            try (Recording r = new Recording()) {

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

                r.start();

                allocateFindMe(false);

                System.gc();

                r.stop();

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

                if (OldObjects.countMatchingEvents(events, FindMe.class, null, null, -1, "allocateFindMe") > 0) {

                    return;

                }

                // no events found, retry

            }

        }

    }

    public static void allocateFindMe(boolean doNothing) {

        if (doNothing) {

            return;

        }

        for (int i = 0; i < OldObjects.MIN_SIZE; i++) {

            // Purposely don't allocate array, so we at least

            // in one old-object test check an ordinary object.

            list.add(new FindMe());

        }

    }

}