mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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d1a9347c09
- The queue for background jobs is unlimited - A smaller number of core threads is maintained - It is possible to set the threads' priority (default low) Added hasAspect() method to XPath functions. Various other cosmetic changes. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6146 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
102 lines
3.5 KiB
Java
102 lines
3.5 KiB
Java
/*
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* Copyright (C) 2005-2007 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing"
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*/
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package org.alfresco.util;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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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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* A thread factory that spawns threads that are statically visible. Each factory uses a unique
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* thread group. All the groups that have been used can be fetched using
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* {@link #getActiveThreadGroups()}, allowing iteration of the the threads in the group.
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*
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* @since 2.1
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* @author Derek Hulley
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*/
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public class TraceableThreadFactory implements ThreadFactory
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{
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private static final AtomicInteger factoryNumber = new AtomicInteger(1);
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private static List<ThreadGroup> activeThreadGroups = Collections.synchronizedList(new ArrayList<ThreadGroup>(1));
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/**
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* Get a list of thread groups registered by the factory.
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*
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* @return Returns a snapshot of thread groups
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*/
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public static List<ThreadGroup> getActiveThreadGroups()
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{
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return activeThreadGroups;
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}
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private final ThreadGroup group;
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private final String namePrefix;
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private final AtomicInteger threadNumber;
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private boolean threadDaemon;
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private int threadPriority;
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TraceableThreadFactory()
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{
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this.group = new ThreadGroup("TraceableThreadGroup-" + factoryNumber.getAndIncrement());
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TraceableThreadFactory.activeThreadGroups.add(this.group);
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this.namePrefix = "TraceableThread-" + factoryNumber.getAndIncrement() + "-thread-";
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this.threadNumber = new AtomicInteger(1);
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}
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/**
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* @param daemon <tt>true</tt> if all threads created must be daemon threads
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*/
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public void setThreadDaemon(boolean daemon)
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{
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this.threadDaemon = daemon;
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}
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/**
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*
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* @param threadPriority the threads priority from 1 (lowest) to 10 (highest)
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*/
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public void setThreadPriority(int threadPriority)
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{
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this.threadPriority = threadPriority;
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}
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public Thread newThread(Runnable r)
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{
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Thread thread = new Thread(
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group,
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r,
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namePrefix + threadNumber.getAndIncrement(),
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0);
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thread.setDaemon(threadDaemon);
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thread.setPriority(threadPriority);
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return thread;
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}
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}
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