/*

 * Copyright (c) 2014 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 org.openjdk.bench.vm.compiler;

import org.openjdk.jmh.annotations.Benchmark;

import org.openjdk.jmh.annotations.BenchmarkMode;

import org.openjdk.jmh.annotations.Mode;

import org.openjdk.jmh.annotations.OutputTimeUnit;

import org.openjdk.jmh.annotations.Scope;

import org.openjdk.jmh.annotations.Setup;

import org.openjdk.jmh.annotations.State;

import java.util.concurrent.TimeUnit;

@BenchmarkMode(Mode.AverageTime)

@OutputTimeUnit(TimeUnit.NANOSECONDS)

@State(Scope.Thread)

public class InnerClassNullRef {

    class Pickles {

        int count;

        public Pickles(int x) {

            count = x;

        }

        public int getCount() {

            return count;

        }

        public void setCount(int x) {

            count = x;

        }

    }

    class BurgerStand {

        public void makeBurgers() {

            if (pickles != null) {

                // add a pickle

                pickles.setCount(pickles.getCount() - 1);

            }

        }

    }

    class BurgerStandNull {

        public void makeBurgers() {

            if (picklesNull != null) {

                // add a pickle

                picklesNull.setCount(picklesNull.getCount() - 1);

            }

        }

    }

    private BurgerStand bs;

    private BurgerStandNull bsNull;

    private Pickles pickles;

    private Pickles picklesNull;

    @Setup

    public void setup() {

        bs = new BurgerStand();

        bsNull = new BurgerStandNull();

        pickles = new Pickles(42);

    }

    @Benchmark

    public void refIsNull() {

        bsNull.makeBurgers();

    }

    @Benchmark

    public void refIsNotNull() {

        bs.makeBurgers();

    }

}