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 * Copyright (c) 2013, 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.configuration;

import static jdk.test.lib.Asserts.assertGreaterThanOrEqual;

import java.util.List;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.EventVerifier;

import jdk.test.lib.jfr.Events;

/*

 * @test

 * @key jfr

 * @requires vm.gc == "Parallel" | vm.gc == null

 * @library /test/lib /test/jdk

 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:-UseFastUnorderedTimeStamps -XX:+UseParallelGC -XX:+UseParallelOldGC -XX:+UseTLAB -XX:MinTLABSize=3k -XX:TLABRefillWasteFraction=96 jdk.jfr.event.gc.configuration.TestGCTLABConfigurationEvent

 */

public class TestGCTLABConfigurationEvent {

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

        Recording recording = new Recording();

        recording.enable(EventNames.GCTLABConfiguration);

        recording.start();

        recording.stop();

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

        assertGreaterThanOrEqual(events.size(), 1, "Expected at least 1 event");

        GCTLABConfigurationEventVerifier verifier = new GCTLABConfigurationEventVerifier(events.get(0));

        verifier.verify();

    }

}

class GCTLABConfigurationEventVerifier extends EventVerifier {

    public GCTLABConfigurationEventVerifier(RecordedEvent event) {

        super(event);

    }

    @Override

    public void verify() throws Exception {

        verifyUsesTLABsIs(true);

        verifyMinTLABSizeIs(kilobyte(3));

        verifyTLABRefillWasteLimitIs(96);

    }

    void verifyUsesTLABsIs(boolean expected) throws Exception {

        verifyEquals("usesTLABs", expected);

    }

    void verifyMinTLABSizeIs(long expected) throws Exception {

        verifyEquals("minTLABSize", expected);

    }

    void verifyTLABRefillWasteLimitIs(long expected) throws Exception {

        verifyEquals("tlabRefillWasteLimit", expected);

    }

    private int kilobyte(int num) {

        return 1024 * num;

    }

}