| /* |
| * 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. |
| */ |
| package org.apache.tomcat.dbcp.pool2.impl; |
| |
| import java.util.Collection; |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| /** |
| * This sub-class was created to expose the waiting threads so that they can be |
| * interrupted when the pool using the queue that uses this lock is closed. The |
| * class is intended for internal use only. |
| * <p> |
| * This class is intended to be thread-safe. |
| * |
| * @since 2.0 |
| */ |
| class InterruptibleReentrantLock extends ReentrantLock { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Create a new InterruptibleReentrantLock with the given fairness policy. |
| * |
| * @param fairness true means threads should acquire contended locks as if |
| * waiting in a FIFO queue |
| */ |
| public InterruptibleReentrantLock(final boolean fairness) { |
| super(fairness); |
| } |
| |
| /** |
| * Interrupt the threads that are waiting on a specific condition |
| * |
| * @param condition the condition on which the threads are waiting. |
| */ |
| public void interruptWaiters(final Condition condition) { |
| final Collection<Thread> threads = getWaitingThreads(condition); |
| for (final Thread thread : threads) { |
| thread.interrupt(); |
| } |
| } |
| } |