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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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 * 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.time.Duration;
import java.util.ArrayList;
import java.util.List;

import jdk.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.internal.test.WhiteBox;
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.TestObjectAge
 */
public class TestObjectAge {

    public final static List<Object[]> leak = new ArrayList<>(OldObjects.MIN_SIZE);

    public static void main(String[] args) throws Exception {
        WhiteBox.setWriteAllObjectSamples(true);

        try (Recording recording = new Recording()) {
            recording.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "1 h");
            recording.start();

            // Allocate array to trigger sampling code path for interpreter / c1
            for (int i = 0; i < OldObjects.MIN_SIZE; i++) {
                leak.add(new Object[0]);
            }
            recording.stop();

            List<RecordedEvent> events = Events.fromRecording(recording);
            // OK if we sometimes don't get an event
            for (RecordedEvent event : events) {
                Duration objectAge = event.getDuration("objectAge");
                // Sanity check
                if (objectAge.isNegative() || objectAge.toMinutes() > 60) {
                    throw new Exception("Object age " + objectAge + " is not reasonable");
                }
            }
        }
    }
}