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.invoke;
  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 
  33 import java.lang.invoke.MethodType;
  34 import java.util.concurrent.TimeUnit;
  35 
  36 /**
  37  * Assesses general MethodType performance.
  38  */
  39 @BenchmarkMode(Mode.AverageTime)
  40 @OutputTimeUnit(TimeUnit.NANOSECONDS)
  41 @State(Scope.Benchmark)
  42 public class MethodTypeAcquire {
  43 
  44     private MethodType pTypes;
  45 
  46     @Setup
  47     public void setup() {
  48         pTypes = MethodType.methodType(A.class, B.class);
  49     }
  50 
  51     @Benchmark
  52     public MethodType baselineRaw() {
  53         return pTypes;
  54     }
  55 
  56     @Benchmark
  57     public MethodType testReturnVoid() {
  58         return MethodType.methodType(void.class);
  59     }
  60 
  61     @Benchmark
  62     public MethodType testReturnInt() {
  63         return MethodType.methodType(int.class);
  64     }
  65 
  66     @Benchmark
  67     public MethodType testReturnObject() {
  68         return MethodType.methodType(Object.class);
  69     }
  70 
  71     @Benchmark
  72     public MethodType testSinglePType() {
  73         return MethodType.methodType(void.class, int.class);
  74     }
  75 
  76     @Benchmark
  77     public MethodType testMultiPType() {
  78         return MethodType.methodType(void.class, A.class, B.class);
  79     }
  80 
  81     @Benchmark
  82     public MethodType testMultiPType_Arg() {
  83         return MethodType.methodType(void.class, pTypes);
  84     }
  85 
  86     public static class A {}
  87     public static class B {}
  88 
  89 }