71 lines
2.6 KiB
Java
71 lines
2.6 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.tribes.util;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* ThreadFactory implementation that creates threads with the thread context
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* class loader set to the class loader that loaded this factory. It is intended
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* to be used when tasks may be passed to executors when the web application
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* class loader is set as the thread context class loader, such as in async
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* session replication.
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*/
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public class TcclThreadFactory implements ThreadFactory {
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private static final AtomicInteger poolNumber = new AtomicInteger(1);
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private static final boolean IS_SECURITY_ENABLED =
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(System.getSecurityManager() != null);
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private final ThreadGroup group;
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private final AtomicInteger threadNumber = new AtomicInteger(1);
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private final String namePrefix;
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public TcclThreadFactory() {
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this("pool-" + poolNumber.getAndIncrement() + "-thread-");
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}
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public TcclThreadFactory(String namePrefix) {
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SecurityManager s = System.getSecurityManager();
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group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
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this.namePrefix = namePrefix;
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}
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@Override
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public Thread newThread(Runnable r) {
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final Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement());
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if (IS_SECURITY_ENABLED) {
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AccessController.doPrivileged(new PrivilegedAction<Void>() {
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@Override
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public Void run() {
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t.setContextClassLoader(this.getClass().getClassLoader());
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return null;
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}
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});
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} else {
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t.setContextClassLoader(this.getClass().getClassLoader());
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}
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t.setDaemon(true);
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return t;
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}
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}
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