/*

 * Copyright (c) 2003, 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.

 *

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package nsk.jvmti.PopFrame;

import java.io.PrintStream;

public class popframe009 {

    final static int PASSED = 0;

    final static int FAILED = 2;

    final static int JCK_STATUS_BASE = 95;

    final static int FIBONACCI_INDEX = 32;

    static {

        try {

            System.loadLibrary("popframe009");

        } catch (UnsatisfiedLinkError ule) {

            System.err.println("Could not load popframe009 library");

            System.err.println("java.library.path:"

                + System.getProperty("java.library.path"));

            throw ule;

        }

    }

    native static void getReady();

    native static int check(Thread thread);

    public static Object lock = new Object();

    public static int fibonacciNumber = -1;

    public static void main(String args[]) {

        args = nsk.share.jvmti.JVMTITest.commonInit(args);

        // produce JCK-like exit status.

        System.exit(run(args, System.out) + JCK_STATUS_BASE);

    }

    public static int run(String args[], PrintStream out) {

        TestThread thr = new TestThread();

        getReady();

        synchronized (lock) {

            thr.start();

            try {

                lock.wait();

            } catch (InterruptedException e) {

                throw new Error("Unexpected " + e);

            }

        }

        int res = check(thr);

        try {

            thr.join();

        } catch (InterruptedException e) {

            throw new Error("Unexpected " + e);

        }

        int expected = fibonacci(FIBONACCI_INDEX);

        if (expected != fibonacciNumber) {

           out.print("fibonacci(" + FIBONACCI_INDEX + "):");

           out.print(" expected = " + expected);

           out.println(", actual = " + fibonacciNumber);

           res = FAILED;

        }

        return res;

    }

    // dummy method to be breakpointed in agent

    static void checkPoint() {

    }

    static int fibonacci(int n) {

        if (n <= 2) {

            return 1;

        } else {

            return fibonacci(n-1) + fibonacci(n-2);

        }

    }

    static class TestThread extends Thread {

        public void run() {

            synchronized (lock) {

                lock.notify();

            }

            checkPoint();

            fibonacciNumber = fibonacci(FIBONACCI_INDEX);

            checkPoint();

        }

    }

}