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 super(); 029 } 030 031 /** 032 * Constructor 033 * 034 * @param fair <jk>true</jk> if this lock should use a fair ordering policy. 035 */ 036 public SimpleNoOpLock(boolean fair) { 037 super(fair); 038 } 039 040 /** 041 * Construct a write lock. 042 * 043 * @return A new closeable write lock. 044 */ 045 public SimpleLock write(){ 046 return new SimpleLock(writeLock()); 047 } 048 049 /** 050 * Construct a read lock. 051 * 052 * @return A new closeable read lock. 053 */ 054 public SimpleLock read(){ 055 return new SimpleLock(readLock()); 056 } 057}