| /* |
| * 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.catalina.tribes.util; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * ThreadFactory implementation that creates threads with the thread context |
| * class loader set to the class loader that loaded this factory. It is intended |
| * to be used when tasks may be passed to executors when the web application |
| * class loader is set as the thread context class loader, such as in async |
| * session replication. |
| */ |
| public class TcclThreadFactory implements ThreadFactory { |
| |
| private static final AtomicInteger poolNumber = new AtomicInteger(1); |
| private static final boolean IS_SECURITY_ENABLED = |
| (System.getSecurityManager() != null); |
| |
| private final ThreadGroup group; |
| private final AtomicInteger threadNumber = new AtomicInteger(1); |
| private final String namePrefix; |
| |
| public TcclThreadFactory() { |
| SecurityManager s = System.getSecurityManager(); |
| group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup(); |
| namePrefix = "pool-" + poolNumber.getAndIncrement() + "-thread-"; |
| } |
| |
| @Override |
| public Thread newThread(Runnable r) { |
| final Thread t = new Thread(group, r, namePrefix + |
| threadNumber.getAndIncrement()); |
| |
| if (IS_SECURITY_ENABLED) { |
| AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| @Override |
| public Void run() { |
| t.setContextClassLoader(this.getClass().getClassLoader()); |
| return null; |
| } |
| }); |
| } else { |
| t.setContextClassLoader(this.getClass().getClassLoader()); |
| } |
| return t; |
| } |
| |
| } |