1 /*

     2  * Copyright (c) 2014 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.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

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

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

    21  * questions.

    22  */

    23 package org.openjdk.bench.java.lang;

    24 

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

    26 import org.openjdk.jmh.annotations.BenchmarkMode;

    27 import org.openjdk.jmh.annotations.Mode;

    28 import org.openjdk.jmh.annotations.OutputTimeUnit;

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

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

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

    32 import org.openjdk.jmh.infra.Blackhole;

    33 

    34 import java.util.BitSet;

    35 import java.util.Date;

    36 import java.util.concurrent.TimeUnit;

    37 

    38 @BenchmarkMode(Mode.AverageTime)

    39 @OutputTimeUnit(TimeUnit.NANOSECONDS)

    40 @State(Scope.Thread)

    41 public class Clone {

    42 

    43     private BitSet testObj1;

    44     private Date testObj2;

    45     private char[] testObj3;

    46 

    47     @Setup

    48     public void setup() {

    49         testObj1 = new BitSet(10);

    50         testObj2 = new Date();

    51         testObj3 = new char[5];

    52     }

    53 

    54     /** Calls clone on three different types. The types are java.util.BitSet, java.util.Date and char[]. */

    55     @Benchmark

    56     public void cloneThreeDifferent(Blackhole bh) {

    57         bh.consume(testObj1.clone());

    58         bh.consume(testObj2.clone());

    59         bh.consume(testObj3.clone());

    60     }

    61 

    62 }

    63