| /* |
| * 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.felix.ipojo.extender.internal.queue; |
| |
| import static java.lang.String.format; |
| |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * A thread factory setting the name of the created thread. |
| * This thread factory delegates the thread creation on another factory and format the name. |
| */ |
| public class NamingThreadFactory implements ThreadFactory { |
| |
| /** |
| * Unique identifier generator. |
| */ |
| private static final AtomicInteger IDENTIFIERS = new AtomicInteger(1); |
| |
| /** |
| * Per-factory counter |
| */ |
| private final AtomicInteger threadNumber = new AtomicInteger(1); |
| |
| /** |
| * The wrapped thread factory on which creation is delegated. |
| */ |
| private final ThreadFactory m_threadFactory; |
| |
| /** |
| * Pool identifier. |
| */ |
| private final int m_identifier; |
| |
| /** |
| * For test only. |
| */ |
| public static void reset() { |
| IDENTIFIERS.set(1); |
| } |
| |
| /** |
| * Creates the object delegating to the given thread factory. |
| * |
| * @param threadFactory the thread factory |
| */ |
| public NamingThreadFactory(ThreadFactory threadFactory) { |
| this(threadFactory, IDENTIFIERS.getAndIncrement()); |
| } |
| |
| /** |
| * Creates the object delegating to the given thread factory. |
| * |
| * @param threadFactory the thread factory |
| * @param identifier the pool identifier |
| */ |
| private NamingThreadFactory(final ThreadFactory threadFactory, final int identifier) { |
| m_threadFactory = threadFactory; |
| m_identifier = identifier; |
| } |
| |
| /** |
| * Creates a new thread. |
| * Format the Thread name |
| * |
| * @param r the runnable |
| * @return the thread object |
| */ |
| public Thread newThread(Runnable r) { |
| Thread thread = m_threadFactory.newThread(r); |
| thread.setName(format("pool-%d-thread-%d", m_identifier, threadNumber.getAndIncrement())); |
| return thread; |
| } |
| } |