blob: a826271d7776a7bdc510a8d958f1b00734846a4a [file] [log] [blame]
/*
* 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.concurrent.ConcurrentHashMap;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.LinkedHashMap;
/**
* How do the various hash maps compare?
*/
public class HashedCollectionsBenchmark extends SimpleBenchmark {
public void timeHashMapGet(int reps) {
HashMap<String, String> map = new HashMap<String, String>();
map.put("hello", "world");
for (int i = 0; i < reps; ++i) {
map.get("hello");
}
}
public void timeHashMapGet_Synchronized(int reps) {
HashMap<String, String> map = new HashMap<String, String>();
synchronized (map) {
map.put("hello", "world");
}
for (int i = 0; i < reps; ++i) {
synchronized (map) {
map.get("hello");
}
}
}
public void timeHashtableGet(int reps) {
Hashtable<String, String> map = new Hashtable<String, String>();
map.put("hello", "world");
for (int i = 0; i < reps; ++i) {
map.get("hello");
}
}
public void timeLinkedHashMapGet(int reps) {
LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
map.put("hello", "world");
for (int i = 0; i < reps; ++i) {
map.get("hello");
}
}
public void timeConcurrentHashMapGet(int reps) {
ConcurrentHashMap<String, String> map = new ConcurrentHashMap<String, String>();
map.put("hello", "world");
for (int i = 0; i < reps; ++i) {
map.get("hello");
}
}
}