| /* |
| * 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.gogo.runtime; |
| |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public class ThreadUtils { |
| |
| /** |
| * Constructs threads with names <code><prefix>-<pool number>-thread-<thread number></code>. |
| * @param prefix prefix to be used for thread names created by this {@link ThreadFactory} |
| * @return ThreadFactory |
| */ |
| public static ThreadFactory namedThreadFactory(String prefix) { |
| return new NamedThreadFactory(prefix); |
| } |
| |
| private static class NamedThreadFactory implements ThreadFactory { |
| |
| private static final AtomicInteger poolNumber = new AtomicInteger(1); |
| private final ThreadGroup group; |
| private final AtomicInteger threadNumber = new AtomicInteger(1); |
| private final String namePrefix; |
| |
| public NamedThreadFactory(String prefix) { |
| SecurityManager s = System.getSecurityManager(); |
| group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup(); |
| namePrefix = prefix + "-" + poolNumber.getAndIncrement() + "-thread-"; |
| } |
| |
| @Override |
| public Thread newThread(Runnable r) { |
| Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0); |
| if (t.isDaemon()) |
| t.setDaemon(false); |
| if (t.getPriority() != Thread.NORM_PRIORITY) |
| t.setPriority(Thread.NORM_PRIORITY); |
| return t; |
| } |
| |
| } |
| |
| } |