/*

 * Copyright (c) 2017, 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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package jdk.jfr.event.sampling;

import java.io.File;

import java.nio.file.Paths;

import java.time.Duration;

import jdk.jfr.FlightRecorder;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.jfr.consumer.RecordingFile;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

/*

 * @test

 * @key jfr

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 * @run main/native jdk.jfr.event.sampling.TestNative

 */

public class TestNative {

    public final static String EVENT_SETTINGS_FILE = System.getProperty("test.src", ".") + File.separator + "sampling.jfc";

    public final static String JFR_DUMP = "samples.jfr";

    public final static String EXCEPTION = "No native samples found";

    public final static String NATIVE_EVENT = EventNames.NativeMethodSample;

    public static Recording recording;

    public static native void longTime();

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

        String lib = System.getProperty("test.nativepath");

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-Djava.library.path=" + lib, "jdk.jfr.event.sampling.TestNative$Test");

        OutputAnalyzer output = ProcessTools.executeProcess(pb);

        output.shouldHaveExitValue(0);

        output.stdoutShouldNotContain("No native samples found");

    }

    static class Test {

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

            System.loadLibrary("TestNative");

            FlightRecorder.getFlightRecorder();

            recording = new Recording();

            recording.setToDisk(true);

            recording.setDestination(Paths.get(JFR_DUMP));

            recording.enable(NATIVE_EVENT).withPeriod(Duration.ofMillis(10));

            recording.start();

            longTime();

            recording.stop();

            recording.close();

            try (RecordingFile rf = new RecordingFile(Paths.get(JFR_DUMP))) {

                while (rf.hasMoreEvents()) {

                    RecordedEvent re = rf.readEvent();

                    if (re.getEventType().getName().equals(NATIVE_EVENT)) {

                        return;

                    }

                }

            }

            throw new Exception("No native samples found");

        }

    }

}