1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.net;
15  
16  import java.util.concurrent.ArrayBlockingQueue;
17  import java.util.concurrent.LinkedBlockingDeque;
18  
19  /**
20   * Factory for {@link java.util.Queue} instances.
21   *
22   * @author Sebastian Gröbler
23   */
24  public class QueueFactory {
25  
26      /**
27       * Creates a new {@link LinkedBlockingDeque} with the given {@code capacity}. In
28       * case the given capacity is smaller than one it will automatically be
29       * converted to one.
30       *
31       * @param capacity the capacity to use for the queue
32       * @param <E>      the type of elements held in the queue
33       * @return a new instance of {@link ArrayBlockingQueue}
34       */
35      public <E> LinkedBlockingDeque<E> newLinkedBlockingDeque(int capacity) {
36          final int actualCapacity = capacity < 1 ? 1 : capacity;
37          return new LinkedBlockingDeque<E>(actualCapacity);
38      }
39  }