/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* 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 com.googlecode.concurrentlinkedhashmap.benchmark;
import static com.googlecode.concurrentlinkedhashmap.benchmark.Benchmarks.createWorkingSet;
import com.google.caliper.Param;
import com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;
import com.googlecode.concurrentlinkedhashmap.caches.Cache;
import com.googlecode.concurrentlinkedhashmap.caches.CacheBuilder;
import com.googlecode.concurrentlinkedhashmap.generator.ScrambledZipfianGenerator;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;
import java.util.List;
import java.util.concurrent.ConcurrentMap;
/**
* This benchmark evaluates single-threaded performance.
*
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class GetPutBenchmark extends SimpleBenchmark {
private static final int MASK = (2 << 10) - 1;
private static final List<Integer> ints =
createWorkingSet(new ScrambledZipfianGenerator(MASK + 1), MASK + 1);
private static final Integer DUMMY = 1;
@Param({
"MapMaker",
"ConcurrentHashMap",
"LinkedHashMap_Lru_Lock",
"ConcurrentLinkedHashMap"})
private Cache cache;
private ConcurrentMap<Integer, Integer> map;
private int index;
@Override
protected void setUp() {
map = new CacheBuilder()
.maximumCapacity(Integer.MAX_VALUE)
.makeCache(cache);
for (int i = 0; i < ints.size(); i++) {
map.put(ints.get(i), DUMMY);
}
}
public void timeGet(final int reps) {
for (int i = 0; i < reps; i++) {
map.get(ints.get(index++ & MASK));
}
}
public void timePut(final int reps) {
for (int i = 0; i < reps; i++) {
map.put(ints.get(index++ & MASK), DUMMY);
}
}
@Test(groups = "caliper")
@Parameters({"warmupMillis", "runMillis", "timeUnit"})
public static void benchmark(String warmupMillis, String runMillis, String timeUnit) {
String[] args = {
"--warmupMillis", warmupMillis,
"--runMillis", runMillis,
"--timeUnit", timeUnit
};
Runner.main(GetPutBenchmark.class, args);
}
}