001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.internal;
014
015import java.util.concurrent.locks.ReentrantReadWriteLock;
016
017/**
018 * An extension of {@link ReentrantReadWriteLock} with convenience methods for creating
019 * auto-closeable locks.
020 */
021public class SimpleNoOpLock extends ReentrantReadWriteLock {
022   private static final long serialVersionUID = 1L;
023
024   /**
025    * Constructor.
026    */
027   public SimpleNoOpLock() {
028   }
029
030   /**
031    * Constructor
032    *
033    * @param fair <jk>true</jk> if this lock should use a fair ordering policy.
034    */
035   public SimpleNoOpLock(boolean fair) {
036      super(fair);
037   }
038
039   /**
040    * Construct a write lock.
041    *
042    * @return A new closeable write lock.
043    */
044   public SimpleLock write(){
045      return new SimpleLock(writeLock());
046   }
047
048   /**
049    * Construct a read lock.
050    *
051    * @return A new closeable read lock.
052    */
053   public SimpleLock read(){
054      return new SimpleLock(readLock());
055   }
056}