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.reflect; 24 25 import org.openjdk.jmh.annotations.Benchmark; 26 import org.openjdk.jmh.annotations.BenchmarkMode; 27 import org.openjdk.jmh.annotations.CompilerControl; 28 import org.openjdk.jmh.annotations.Mode; 29 import org.openjdk.jmh.annotations.OutputTimeUnit; 30 import org.openjdk.jmh.annotations.Scope; 31 import org.openjdk.jmh.annotations.Setup; 32 import org.openjdk.jmh.annotations.State; 33 34 import java.lang.reflect.InvocationTargetException; 35 import java.lang.reflect.Method; 36 import java.util.concurrent.TimeUnit; 37 38 /** 39 * Benchmark measuring java.lang.reflect.Method.invoke speed. 40 * <p/> 41 * TODO: Add tests for virtual and interface methods. 42 */ 43 @BenchmarkMode(Mode.AverageTime) 44 @OutputTimeUnit(TimeUnit.NANOSECONDS) 45 @State(Scope.Thread) 46 public class MethodInvoke { 47 48 private Method staticMeth_0; 49 private Method staticMeth_6ref; 50 private Method staticMeth_6prim; 51 52 private Object[] args_0; 53 private Object[] args_6ref; 54 private Object[] args_6prim; 55 56 @Setup 57 public void setup() { 58 args_0 = new Object[]{}; 59 args_6ref = new Object[]{ new Object(), new Object(), 60 new Object(), new Object(), new Object(), new Object()}; 61 args_6prim = new Object[]{ 62 new Integer(1), new Long(5L), 63 new Double(5.6d), new Float(23.11f), 64 Boolean.TRUE, new Character('d') 65 }; 66 67 staticMeth_0 = getMethodWithName("staticMethodWithoutParams"); 68 staticMeth_6ref = getMethodWithName("staticMethodWithSixObjectParams"); 69 staticMeth_6prim = getMethodWithName("staticMethodWithSixPrimitiveParams"); 70 } 71 72 @CompilerControl(CompilerControl.Mode.DONT_INLINE) 73 public static void staticMethodWithoutParams() { 74 // intentionally left blank 75 } 76 77 @CompilerControl(CompilerControl.Mode.DONT_INLINE) 78 public static void staticMethodWithSixObjectParams(Object o1, Object o2, Object o3, Object o4, Object o5, Object o6) { 79 // intentionally left blank 80 } 81 82 @CompilerControl(CompilerControl.Mode.DONT_INLINE) 83 public static void staticMethodWithSixPrimitiveParams(int i, long j, double d, float f, boolean z, char c) { 84 // intentionally left blank 85 } 86 87 /* inner method to get the method to invoke. */ 88 89 private static Method getMethodWithName(String methodName) { 90 Method[] methodArray = MethodInvoke.class.getMethods(); 91 for (Method m : methodArray) { 92 if (m.getName().equals(methodName)) { 93 return m; 94 } 95 } 96 return null; 97 } 98 99 @Benchmark 100 public void invokeWithoutParams() throws InvocationTargetException, IllegalAccessException { 101 staticMeth_0.invoke(null, args_0); 102 } 103 104 @Benchmark 105 public void invokeWithSixObjectParams() throws Exception { 106 staticMeth_6ref.invoke(null, args_6ref); 107 } 108 109 @Benchmark 110 public void invokeWithSixPrimitiveParams() throws Exception { 111 staticMeth_6prim.invoke(null, args_6prim); 112 } 113 114 }