62 lines
2.2 KiB
Java
62 lines
2.2 KiB
Java
/*
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* This file is part of BlueMap, licensed under the MIT License (MIT).
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*
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* Copyright (c) Blue (Lukas Rieger) <https://bluecolored.de>
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* Copyright (c) contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package de.bluecolored.bluemap.core.util;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.function.Function;
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import java.util.function.Supplier;
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public class InstancePool<T> {
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private final Supplier<T> creator;
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private final Function<T, T> recycler;
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private final ConcurrentLinkedQueue<T> pool = new ConcurrentLinkedQueue<>();
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public InstancePool(Supplier<T> creator) {
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this.creator = creator;
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this.recycler = t -> t;
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}
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public InstancePool(Supplier<T> creator, Function<T, T> recycler) {
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this.creator = creator;
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this.recycler = recycler;
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}
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public T claimInstance() {
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T instance = pool.poll();
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if (instance == null) {
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instance = creator.get();
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}
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return instance;
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}
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public void recycleInstance(T instance) {
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instance = recycler.apply(instance);
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if (instance != null)
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pool.offer(instance);
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}
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}
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