/*
 * Copyright (c) 2015, Oracle America, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 *  * Neither the name of Oracle nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.sample;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.CompilerControl;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
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 org.openjdk.jmh.annotations.TearDown;
import org.openjdk.jmh.annotations.Warmup;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.io.UncheckedIOException;
import java.util.concurrent.TimeUnit;

@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Warmup(iterations = 10)
@Measurement(iterations = 5)
@Fork(2)
public class DeserialAllBenchmark {

    @Benchmark
    public Object p00() throws Exception {
        return newSerialStream(p00Bytes).readObject();
    }

    @Benchmark
    public Object p01() throws Exception {
            return newSerialStream(p01Bytes).readObject();
    }

    @Benchmark
    public Object p08() throws Exception {
        return newSerialStream(p08Bytes).readObject();
    }

    @Benchmark
    public Object p16() throws Exception {
        return newSerialStream(p16Bytes).readObject();
    }

    @Benchmark
    public Object f01() throws Exception {
        return newSerialStream(f01Bytes).readObject();
    }

    @Benchmark
    public Object f08() throws Exception {
        return newSerialStream(f08Bytes).readObject();
    }

    @Benchmark
    public Object f16() throws Exception {
        return newSerialStream(f16Bytes).readObject();
    }

    static class P00 implements Serializable { }

    static class P01 implements Serializable {
        public int f1;
        public P01() {
            f1 = 42;
        }
    }

    static class P08 implements Serializable {
        public int f1, f2, f3, f4, f5, f6, f7, f8;
        public P08() {
            f1 = f2= f3= f4 =f5 = f6 = f7 = f8 = 42;
        }
    }

    static class P16 implements Serializable {
        public int f1, f2, f3, f4, f5, f6, f7, f8;
        public int f9, f10, f11, f12, f13, f14, f15, f16;
        public P16() {
            f1 = f2= f3= f4 =f5 = f6 = f7 = f8 = 42;
            f9 = f10= f11 = f12 = f13 = f14 = f15 = f16 = 42;
        }
    }

    static class F01 implements Serializable {
        public final int f1;
        public F01() {
            f1 = 42;
        }
    }

    static class F08 implements Serializable {
        public final int f1, f2, f3, f4, f5, f6, f7, f8;
        public F08() {
            f1 = f2= f3= f4 =f5 = f6 = f7 = f8 = 42;
        }
    }

    static class F16 implements Serializable {
        public final int f1, f2, f3, f4, f5, f6, f7, f8;
        public final int f9, f10, f11, f12, f13, f14, f15, f16;
        public F16() {
            f1 = f2= f3= f4 =f5 = f6 = f7 = f8 = 42;
            f9 = f10= f11 = f12 = f13 = f14 = f15 = f16 = 42;
        }
    }

    private final static byte[] p00Bytes = toSerialBytes(new P00());
    private final static byte[] p01Bytes = toSerialBytes(new P01());
    private final static byte[] p08Bytes = toSerialBytes(new P08());
    private final static byte[] p16Bytes = toSerialBytes(new P16());
    private final static byte[] f01Bytes = toSerialBytes(new F01());
    private final static byte[] f08Bytes = toSerialBytes(new F08());
    private final static byte[] f16Bytes = toSerialBytes(new F16());

    @CompilerControl(CompilerControl.Mode.INLINE)
    static ObjectInputStream newSerialStream(byte[] bytes) {
        try {
            ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
            return new ObjectInputStream(bais);
        } catch (IOException x) {
            throw new UncheckedIOException(x);
        }
    }

    static byte[] toSerialBytes(Object obj) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        try {
            ObjectOutputStream oos = new ObjectOutputStream(baos);
            oos.writeObject(obj);
            oos.close();
            return baos.toByteArray();
        } catch (IOException x) {
            throw new UncheckedIOException(x);
        }
    }
}