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 java.lang.reflect.Constructor; 26 import java.lang.reflect.Method; 27 import java.util.concurrent.TimeUnit; 28 29 import org.openjdk.jmh.annotations.Benchmark; 30 import org.openjdk.jmh.annotations.BenchmarkMode; 31 import org.openjdk.jmh.annotations.Mode; 32 import org.openjdk.jmh.annotations.OutputTimeUnit; 33 34 @BenchmarkMode(Mode.AverageTime) 35 @OutputTimeUnit(TimeUnit.NANOSECONDS) 36 public class Clazz { 37 38 /** 39 * Get constructor for this class through reflection 40 * 41 * @return 42 * @throws NoSuchMethodException 43 */ 44 @Benchmark 45 public Constructor getConstructor() throws NoSuchMethodException { 46 return Clazz.class.getConstructor(); 47 } 48 49 /** 50 * Get constructor for the String class through reflection, forcing full 51 * security check 52 * 53 * @return 54 * @throws NoSuchMethodException 55 */ 56 @Benchmark 57 public Constructor getConstructorDifferentClassLoader() throws NoSuchMethodException { 58 return String.class.getConstructor(); 59 } 60 61 /** 62 * Get the toString method through reflection on Clazz 63 * 64 * @return 65 */ 66 @Benchmark 67 public Method getMethod() throws NoSuchMethodException { 68 return Clazz.class.getMethod("toString"); 69 } 70 71 /** 72 * Get the toString method through reflection on String, forcing full 73 * security check 74 * 75 * @return 76 * @throws NoSuchMethodException 77 */ 78 @Benchmark 79 public Method getMethodDifferentClassLoader() throws NoSuchMethodException { 80 return String.class.getMethod("toString"); 81 } 82 }