1/* 2 * Copyright (C) 2009 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package benchmarks.regression; 18 19import com.google.caliper.Benchmark; 20import com.google.caliper.Param; 21import com.google.caliper.Runner; 22import com.google.caliper.SimpleBenchmark; 23import java.text.*; 24import java.util.*; 25 26/** 27 * Benchmarks creation and cloning various expensive objects. 28 */ 29public class ExpensiveObjectsBenchmark extends SimpleBenchmark { 30 public void timeNewDateFormatTimeInstance(int reps) { 31 for (int i = 0; i < reps; ++i) { 32 DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT); 33 df.format(System.currentTimeMillis()); 34 } 35 } 36 37 public void timeClonedDateFormatTimeInstance(int reps) { 38 DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT); 39 for (int i = 0; i < reps; ++i) { 40 ((DateFormat) df.clone()).format(System.currentTimeMillis()); 41 } 42 } 43 44 public void timeReusedDateFormatTimeInstance(int reps) { 45 DateFormat df = DateFormat.getTimeInstance(DateFormat.SHORT); 46 for (int i = 0; i < reps; ++i) { 47 synchronized (df) { 48 df.format(System.currentTimeMillis()); 49 } 50 } 51 } 52 53 public void timeNewCollator(int reps) { 54 for (int i = 0; i < reps; ++i) { 55 Collator.getInstance(Locale.US); 56 } 57 } 58 59 public void timeClonedCollator(int reps) { 60 Collator c = Collator.getInstance(Locale.US); 61 for (int i = 0; i < reps; ++i) { 62 c.clone(); 63 } 64 } 65 66 public void timeNewDateFormatSymbols(int reps) { 67 for (int i = 0; i < reps; ++i) { 68 new DateFormatSymbols(Locale.US); 69 } 70 } 71 72 public void timeClonedDateFormatSymbols(int reps) { 73 DateFormatSymbols dfs = new DateFormatSymbols(Locale.US); 74 for (int i = 0; i < reps; ++i) { 75 dfs.clone(); 76 } 77 } 78 79 public void timeNewDecimalFormatSymbols(int reps) { 80 for (int i = 0; i < reps; ++i) { 81 new DecimalFormatSymbols(Locale.US); 82 } 83 } 84 85 public void timeClonedDecimalFormatSymbols(int reps) { 86 DecimalFormatSymbols dfs = new DecimalFormatSymbols(Locale.US); 87 for (int i = 0; i < reps; ++i) { 88 dfs.clone(); 89 } 90 } 91 92 public void timeNewNumberFormat(int reps) { 93 for (int i = 0; i < reps; ++i) { 94 NumberFormat.getInstance(Locale.US); 95 } 96 } 97 98 public void timeClonedNumberFormat(int reps) { 99 NumberFormat nf = NumberFormat.getInstance(Locale.US); 100 for (int i = 0; i < reps; ++i) { 101 nf.clone(); 102 } 103 } 104 105 public void timeNumberFormatTrivialFormatLong(int reps) { 106 NumberFormat nf = NumberFormat.getInstance(Locale.US); 107 for (int i = 0; i < reps; ++i) { 108 nf.format(1024L); 109 } 110 } 111 112 public void timeLongToString(int reps) { 113 for (int i = 0; i < reps; ++i) { 114 Long.toString(1024L); 115 } 116 } 117 118 public void timeNumberFormatTrivialFormatDouble(int reps) { 119 NumberFormat nf = NumberFormat.getInstance(Locale.US); 120 for (int i = 0; i < reps; ++i) { 121 nf.format(1024.0); 122 } 123 } 124 125 public void timeNewSimpleDateFormat(int reps) { 126 for (int i = 0; i < reps; ++i) { 127 new SimpleDateFormat(); 128 } 129 } 130 131 public void timeClonedSimpleDateFormat(int reps) { 132 SimpleDateFormat sdf = new SimpleDateFormat(); 133 for (int i = 0; i < reps; ++i) { 134 sdf.clone(); 135 } 136 } 137 138 public void timeNewGregorianCalendar(int reps) { 139 for (int i = 0; i < reps; ++i) { 140 new GregorianCalendar(); 141 } 142 } 143 144 public void timeClonedGregorianCalendar(int reps) { 145 GregorianCalendar gc = new GregorianCalendar(); 146 for (int i = 0; i < reps; ++i) { 147 gc.clone(); 148 } 149 } 150} 151