+++ /dev/null
-package org.apache.lucene.util;
-
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.Condition;
-import java.util.concurrent.locks.ReentrantLock;
-
-/**
- * A dummy lock as a replacement for {@link ReentrantLock} to disable locking
- * @lucene.internal
- */
-public final class DummyConcurrentLock implements Lock {
-
- /** a default instance, can be always used, as this {@link Lock} is stateless. */
- public static final DummyConcurrentLock INSTANCE = new DummyConcurrentLock();
-
- public void lock() {}
-
- public void lockInterruptibly() {}
-
- public boolean tryLock() {
- return true;
- }
-
- public boolean tryLock(long time, TimeUnit unit) {
- return true;
- }
-
- public void unlock() {}
-
- public Condition newCondition() {
- throw new UnsupportedOperationException();
- }
-
-}