/*
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* Copyright (C) 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package benchmarks;
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import java.util.ArrayList;
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/**
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* Is a hand-coded counted loop through an ArrayList cheaper than enhanced for?
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*/
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public class ArrayListIterationBenchmark {
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ArrayList<Foo> mList = new ArrayList<Foo>();
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{
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for (int i = 0; i < 27; ++i) mList.add(new Foo());
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}
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public void timeArrayListIterationIndexed(int reps) {
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for (int rep = 0; rep < reps; ++rep) {
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int sum = 0;
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ArrayList<Foo> list = mList;
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int len = list.size();
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for (int i = 0; i < len; ++i) {
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sum += list.get(i).mSplat;
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}
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}
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}
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public void timeArrayListIterationForEach(int reps) {
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for (int rep = 0; rep < reps; ++rep) {
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int sum = 0;
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for (Foo a : mList) {
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sum += a.mSplat;
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}
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}
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}
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}
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