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