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.vm.lambda.capture;
  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 
  30 import java.util.concurrent.TimeUnit;
  31 
  32 /**
  33  * evaluates method reference capture
  34  *
  35  * @author Sergey Kuksenko (sergey.kuksenko@oracle.com)
  36  */
  37 @BenchmarkMode(Mode.AverageTime)
  38 @OutputTimeUnit(TimeUnit.NANOSECONDS)
  39 public class CaptureMR {
  40 
  41     public static class Mock0 {
  42         public Mock0() {
  43         }
  44     }
  45 
  46     public static Object method_static() {
  47         return "42";
  48     }
  49 
  50     public Object method_instance() {
  51         return "42";
  52     }
  53 
  54     @Benchmark()
  55     public FunctionalInterface0 mref_static0(){
  56         return CaptureMR::method_static;
  57     }
  58 
  59     @Benchmark()
  60     public FunctionalInterface0 mref_bound0(){
  61         return this::method_instance;
  62     }
  63 
  64     @Benchmark()
  65     public FunctionalInterface0 mref_constructor0(){
  66         return Mock0::new;
  67     }
  68 
  69 
  70 //---------------------------
  71 
  72     public static class Mock1 {
  73         private Object oo;
  74         public Mock1(Object o) {
  75             oo = o;
  76         }
  77     }
  78 
  79     public static Object method_static(Object bar) {
  80         return "42" + bar;
  81     }
  82 
  83     public Object method_instance(Object bar) {
  84         return "42" + bar;
  85     }
  86 
  87     @Benchmark()
  88     public FunctionalInterface1 mref_static1(){
  89         return CaptureMR::method_static;
  90     }
  91 
  92     @Benchmark()
  93     public FunctionalInterface1 mref_bound1(){
  94         return this::method_instance;
  95     }
  96 
  97     @Benchmark()
  98     public FunctionalInterface1 mref_constructor1(){
  99         return Mock1::new;
 100     }
 101 
 102 }