1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 package org.openjdk.micro.jdk.java.util;

    26 

    27 import java.util.Arrays;

    28 import java.util.Random;

    29 import org.openjdk.jmh.annotations.Benchmark;

    30 import org.openjdk.jmh.annotations.Level;

    31 import org.openjdk.jmh.annotations.Param;

    32 import org.openjdk.jmh.annotations.Scope;

    33 import org.openjdk.jmh.annotations.Setup;

    34 import org.openjdk.jmh.annotations.State;

    35 

    36 @State(Scope.Thread)

    37 public class ArraysSort {

    38 

    39     private final Random srand = new Random(65536);

    40 

    41     @Param({"9000", "16392", "65536", "10485760"})

    42     private int size;

    43 

    44     private byte[] array;

    45 

    46     @Setup

    47     public final void setup() {

    48         array = new byte[size];

    49     }

    50 

    51     @Setup(Level.Invocation)

    52     public final void randomize() {

    53         srand.setSeed(65536);

    54         srand.nextBytes(array);

    55     }

    56 

    57     @Benchmark

    58     public void sortBytes() {

    59         Arrays.sort(array);

    60     }

    61 

    62     @Benchmark

    63     public void sortBytesParallel() {

    64         Arrays.parallelSort(array);

    65     }

    66 }