1 /* 2 * Copyright (c) 2019, 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 24 package org.openjdk.bench.java.lang; 25 26 import org.openjdk.jmh.annotations.*; 27 import java.util.concurrent.TimeUnit; 28 29 @BenchmarkMode(Mode.AverageTime) 30 @OutputTimeUnit(TimeUnit.NANOSECONDS) 31 @State(Scope.Benchmark) 32 public class StringReplace { 33 34 public String slat1 = new String("java.lang.String"); 35 public String sutf16 = new String("\u1D36\u1D43\u1D5B\u1D43 \uFF11\uFF13"); 36 37 @Benchmark 38 public String replace0x1_1_Latin1() { 39 return slat1.replace("Z", "z"); 40 } 41 42 @Benchmark 43 public String replace1x1_0_Latin1() { 44 return slat1.replace("g", ""); 45 } 46 47 @Benchmark 48 public String replace1x1_1_Latin1() { 49 return slat1.replace("g", "k"); 50 } 51 52 @Benchmark 53 public String replace1x1_2_Latin1() { 54 return slat1.replace("g", "th"); 55 } 56 57 @Benchmark 58 public String replace2x1_0_Latin1() { 59 return slat1.replace(".", ""); 60 } 61 62 @Benchmark 63 public String replace2x1_1_Latin1() { 64 return slat1.replace(".", "/"); 65 } 66 67 @Benchmark 68 public String replace2x1_2_Latin1() { 69 return slat1.replace(".", "::"); 70 } 71 72 @Benchmark 73 public String replace0x1_1_UTF16() { 74 return sutf16.replace("\u1D36", "\u1D38\u1D3A"); 75 } 76 77 @Benchmark 78 public String replace1x1_0_UTF16() { 79 return sutf16.replace("\uFF11", ""); 80 } 81 82 @Benchmark 83 public String replace1x1_1_UTF16() { 84 return sutf16.replace("\u1D36", "\u24BF"); 85 } 86 87 @Benchmark 88 public String replace1x1_2_UTF16() { 89 return sutf16.replace("\uFF11", "\uFF11\uFF12"); 90 } 91 92 @Benchmark 93 public String replace2x1_0_UTF16() { 94 return sutf16.replace("\u1D43", ""); 95 } 96 97 @Benchmark 98 public String replace2x1_1_UTF16() { 99 return sutf16.replace("\u1D43", "\u1D2C"); 100 } 101 102 @Benchmark 103 public String replace2x1_2_UTF16() { 104 return sutf16.replace("\u1D43", "\u21DB\u21DB"); 105 } 106 }