001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.internal;
018
019import java.util.concurrent.locks.*;
020
021/**
022 * An extension of {@link ReentrantReadWriteLock} with convenience methods for creating
023 * auto-closeable locks.
024 */
025public class SimpleNoOpLock extends ReentrantReadWriteLock {
026   private static final long serialVersionUID = 1L;
027
028   /**
029    * Constructor.
030    */
031   public SimpleNoOpLock() {
032   }
033
034   /**
035    * Constructor
036    *
037    * @param fair <jk>true</jk> if this lock should use a fair ordering policy.
038    */
039   public SimpleNoOpLock(boolean fair) {
040      super(fair);
041   }
042
043   /**
044    * Construct a write lock.
045    *
046    * @return A new closeable write lock.
047    */
048   public SimpleLock write(){
049      return new SimpleLock(writeLock());
050   }
051
052   /**
053    * Construct a read lock.
054    *
055    * @return A new closeable read lock.
056    */
057   public SimpleLock read(){
058      return new SimpleLock(readLock());
059   }
060}