/*

 * 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.java.lang;

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.Param;

import org.openjdk.jmh.annotations.Scope;

import org.openjdk.jmh.annotations.Setup;

import org.openjdk.jmh.annotations.State;

import java.util.concurrent.TimeUnit;

/**

 * Benchmark measuring Unaligned System.arraycopy.

 */

@BenchmarkMode(Mode.AverageTime)

@OutputTimeUnit(TimeUnit.NANOSECONDS)

@State(Scope.Thread)

public class ArrayCopyUnalignedDst {

    @Param({"1", "3", "5", "10", "20", "70", "150", "300", "600", "1200"})

    int length;

    int fromPos, toPos;

    byte[] fromByteArr, toByteArr;

    char[] fromCharArr, toCharArr;

    int[] fromIntArr, toIntArr;

    long[] fromLongArr, toLongArr;

    @Setup

    public void setup() {

        // Dst position Unaligned

        fromPos = 8;

        toPos = 9;

        fromByteArr = new byte[1210];

        toByteArr = new byte[1210];

        fromCharArr = new char[1210];

        toCharArr = new char[1210];

        fromIntArr = new int[1210];

        toIntArr = new int[1210];

        fromLongArr = new long[1210];

        toLongArr = new long[1210];

    }

    @Benchmark

    public void testByte() {

        System.arraycopy(fromByteArr, fromPos, toByteArr, toPos, length);

    }

    @Benchmark

    public void testChar() {

        System.arraycopy(fromCharArr, fromPos, toCharArr, toPos, length);

    }

    @Benchmark

    public void testInt() {

        System.arraycopy(fromIntArr, fromPos, toIntArr, toPos, length);

    }

    @Benchmark

    public void testLong() {

        System.arraycopy(fromLongArr, fromPos, toLongArr, toPos, length);

    }

}