1 /* 2 * Copyright (C) 2010 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 17 package benchmarks.regression; 18 19 import com.google.caliper.Param; 20 import java.util.concurrent.atomic.AtomicInteger; 21 22 public final class MutableIntBenchmark { 23 24 enum Kind { 25 ARRAY() { 26 int[] value = new int[1]; 27 28 @Override void timeCreate(int reps) { 29 for (int i = 0; i < reps; i++) { 30 value = new int[] { 5 }; 31 } 32 } 33 @Override void timeIncrement(int reps) { 34 for (int i = 0; i < reps; i++) { 35 value[0]++; 36 } 37 } 38 @Override int timeGet(int reps) { 39 int sum = 0; 40 for (int i = 0; i < reps; i++) { 41 sum += value[0]; 42 } 43 return sum; 44 } 45 }, 46 ATOMIC() { 47 AtomicInteger value = new AtomicInteger(); 48 49 @Override void timeCreate(int reps) { 50 for (int i = 0; i < reps; i++) { 51 value = new AtomicInteger(5); 52 } 53 } 54 @Override void timeIncrement(int reps) { 55 for (int i = 0; i < reps; i++) { 56 value.incrementAndGet(); 57 } 58 } 59 @Override int timeGet(int reps) { 60 int sum = 0; 61 for (int i = 0; i < reps; i++) { 62 sum += value.intValue(); 63 } 64 return sum; 65 } 66 }; 67 68 abstract void timeCreate(int reps); 69 abstract void timeIncrement(int reps); 70 abstract int timeGet(int reps); 71 } 72 73 @Param Kind kind; 74 75 public void timeCreate(int reps) { 76 kind.timeCreate(reps); 77 } 78 79 public void timeIncrement(int reps) { 80 kind.timeIncrement(reps); 81 } 82 83 public void timeGet(int reps) { 84 kind.timeGet(reps); 85 } 86 } 87
