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 * 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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 *

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package jdk.jfr.event.oldobject;

import java.util.ArrayList;

import java.util.List;

import jdk.jfr.Event;

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.hasJFR

 * @requires vm.gc == "null"

 * @library /test/lib /test/jdk

 * @modules jdk.jfr/jdk.jfr.internal.test

 */

public class TestAllocationTime {

    private static class BeforeLeakEvent extends Event {

    }

    private static class AfterLeakEvent extends Event {

    }

    private static class Leak {

    }

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

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

        WhiteBox.setWriteAllObjectSamples(true);

        while(true) {

            try (Recording recording = new Recording()) {

                leak.clear();

                recording.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "1 h");

                recording.start();

                BeforeLeakEvent be = new BeforeLeakEvent();

                be.commit();

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

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

                    leak.add(new Leak[0]);

                }

                AfterLeakEvent ae = new AfterLeakEvent();

                ae.commit();

                recording.stop();

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

                Events.hasEvents(events);

                RecordedObject sample = findLeak(events, BeforeLeakEvent.class.getName());

                if (sample != null)  {

                    long beforeTime = find(events, BeforeLeakEvent.class.getName()).getValue("startTime");

                    long allocationTime = sample.getValue("allocationTime");

                    long afterTime = find(events, AfterLeakEvent.class.getName()).getValue("startTime");

                    System.out.println("Before time     : " + beforeTime);

                    System.out.println("Allocation time : " + allocationTime);

                    System.out.println("After time      : " + afterTime);

                    if (allocationTime < beforeTime) {

                        throw new Exception("Allocation should not happen this early");

                    }

                    if (allocationTime > afterTime) {

                        throw new Exception("Allocation should not happen this late");

                    }

                    return; // sample ok

                }

            }

        }

    }

    private static RecordedObject findLeak(List<RecordedEvent> events, String name) throws Exception {

        for (RecordedEvent e : events) {

            if (e.getEventType().getName().equals(EventNames.OldObjectSample)) {

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

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

                if (rc.getName().equals(Leak[].class.getName())) {

                    return e;

                }

            }

        }

        return null;

    }

    private static RecordedEvent find(List<RecordedEvent> events, String name) throws Exception {

        for (RecordedEvent e : events) {

            if (e.getEventType().getName().equals(name)) {

                return e;

            }

        }

        throw new Exception("Could not find event with name " + name);

    }

}