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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.

 *

 * 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).

 *

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package jdk.jfr.api.consumer.recordingstream;

import java.util.List;

import java.util.concurrent.CountDownLatch;

import java.util.concurrent.atomic.AtomicBoolean;

import jdk.jfr.Event;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.jfr.consumer.RecordingStream;

import jdk.test.lib.jfr.Events;

/**

 * @test

 * @summary Tests that events are not emitted in handlers

 * @key jfr

 * @requires vm.hasJFR

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestRecursive

 */

public class TestRecursive {

    public static class NotRecorded extends Event {

    }

    public static class Recorded extends Event {

    }

    public static void main(String... args) throws Exception {

        testAsync();

    }

    private static void testSync() throws Exception {

        try (Recording r = new Recording()) {

            r.start();

            try (RecordingStream rs = new RecordingStream()) {

                rs.onEvent(e -> {

                });

            }

            r.stop();

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

            if (count(events, NotRecorded.class) != 0) {

                throw new Exception("Expected 0 NotRecorded events");

            }

                throw new Exception("Expected 2 Recorded events");

            }

        }

    }

    private static int count(List<RecordedEvent> events, Class<?> eventClass) {

        int count = 0;

        for (RecordedEvent e : events) {

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

                count++;

            }

        }

        return count;

    }

    private static void testAsync() throws InterruptedException, Exception {

        CountDownLatch latchOne = new CountDownLatch(1);

        CountDownLatch latchTwo = new CountDownLatch(2);

        AtomicBoolean fail = new AtomicBoolean();

        try (RecordingStream r = new RecordingStream()) {

            r.onEvent(e -> {

                System.out.println(e);

                NotRecorded event = new NotRecorded();

                event.commit();

                if (e.getEventType().getName().equals(Recorded.class.getName())) {

                    latchOne.countDown();

                    latchTwo.countDown();

                }

                if (e.getEventType().getName().equals(NotRecorded.class.getName())) {

                    fail.set(true);

                }

            });

            r.startAsync();

            Recorded e1 = new Recorded();

            e1.commit();

            latchOne.await();

            Recorded e2 = new Recorded();

            e2.commit();

            latchTwo.await();

            if (fail.get()) {

                throw new Exception("Unexpected event found");

            }

        }

    }

}