1 /* 2 * Copyright (C) 2012 The Guava Authors 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 17 package com.google.common.base; 18 19 import com.google.caliper.Benchmark; 20 import com.google.caliper.Param; 21 22 /** 23 * Some microbenchmarks for the {@link Objects.ToStringHelper} class. 24 * 25 * @author Osvaldo Doederlein 26 */ 27 public class ToStringHelperBenchmark { 28 29 @Param({"0", "2", "5", "10"}) int dataSize; 30 private static final String NAME = "abcdefgh"; 31 private static final String NAME3 = Strings.repeat(NAME, 3); 32 addEntries(Objects.ToStringHelper helper)33 private static void addEntries(Objects.ToStringHelper helper) { 34 helper 35 .add(NAME, 10) 36 .addValue(10L) 37 .add(NAME, 3.14f) 38 .addValue(3.14d) 39 .add(NAME3, false) 40 .add(NAME3, NAME3) 41 .add(NAME3, 'x'); 42 } 43 toString(int reps)44 @Benchmark int toString(int reps) { 45 int dummy = 0; 46 for (int i = 0; i < reps; i++) { 47 Objects.ToStringHelper helper = Objects.toStringHelper("klass").omitNullValues(); 48 for (int j = 0; j < dataSize; ++j) { 49 addEntries(helper); 50 } 51 dummy ^= helper 52 .toString().hashCode(); 53 } 54 return dummy; 55 } 56 } 57