/*
* Copyright 2014 NAVER Corp.
*
* 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.navercorp.pinpoint.profiler.util;
import com.google.common.collect.MapMaker;
import java.util.concurrent.ConcurrentMap;
/**
* @author emeroad
*/
public final class Maps {
private static final MapMaker DEFAULT_WEAK_MAP_MAKER = createWeakMapMaker();
private static MapMaker createWeakMapMaker() {
final MapMaker mapMaker = new MapMaker();
mapMaker.weakKeys();
return mapMaker;
}
public static <K, V> ConcurrentMap<K, V> newWeakConcurrentMap() {
return DEFAULT_WEAK_MAP_MAKER.makeMap();
}
public static <K, V> ConcurrentMap<K, V> newWeakConcurrentMap(int initialCapacity) {
final MapMaker weakMapMaker = createWeakMapMaker();
weakMapMaker.initialCapacity(initialCapacity);
return weakMapMaker.makeMap();
}
}