/*

 * Copyright (c) 2016, 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,

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package jdk.jfr.event.gc.detailed;

import java.nio.file.Paths;

import java.util.List;

import jdk.jfr.EventType;

import jdk.jfr.FlightRecorder;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

import jdk.test.lib.jfr.GCHelper;

public class TestG1HeapRegionInformationEvent {

    private final static String EVENT_NAME = EventNames.G1HeapRegionInformation;

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

        Recording recording = null;

        try {

            recording = new Recording();

            // activate the event we are interested in and start recording

            for (EventType t : FlightRecorder.getFlightRecorder().getEventTypes()) {

                System.out.println(t.getName());

            }

            recording.enable(EVENT_NAME);

            recording.start();

            recording.stop();

            // Verify recording

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

            Events.hasEvents(events);

            for (RecordedEvent event : events) {

                Events.assertField(event, "index").notEqual(-1);

                Asserts.assertTrue(GCHelper.isValidG1HeapRegionType(Events.assertField(event, "type").getValue()));

                Events.assertField(event, "used").atMost(1L*1024*1024);

            }

        } catch (Throwable t) {

            if (recording != null) {

                recording.dump(Paths.get("TestG1HeapRegionInformationEvent.jfr"));

            }

            throw t;

        } finally {

            if (recording != null) {

                recording.close();

            }

        }

    }

}