1 package org.apache.lucene.util;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
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20 import java.util.concurrent.TimeUnit;
21 import java.util.concurrent.locks.Lock;
22 import java.util.concurrent.locks.Condition;
23 import java.util.concurrent.locks.ReentrantLock;
26 * A dummy lock as a replacement for {@link ReentrantLock} to disable locking
29 public final class DummyConcurrentLock implements Lock {
31 /** a default instance, can be always used, as this {@link Lock} is stateless. */
32 public static final DummyConcurrentLock INSTANCE = new DummyConcurrentLock();
36 public void lockInterruptibly() {}
38 public boolean tryLock() {
42 public boolean tryLock(long time, TimeUnit unit) {
46 public void unlock() {}
48 public Condition newCondition() {
49 throw new UnsupportedOperationException();