| author | chris <chris@marvin> |
| Tue, 28 Jul 2009 15:39:37 +0200 | |
| changeset 4 | cdddff328b78 |
| parent 3 | 2fdc9cc89502 |
| permissions | -rw-r--r-- |
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/* |
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* SONEWS News Server |
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* see AUTHORS for the list of contributors |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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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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* |
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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, see <http://www.gnu.org/licenses/>. |
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*/ |
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|
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package org.sonews; |
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|
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import java.sql.SQLException; |
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import java.util.Map; |
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import org.sonews.daemon.AbstractDaemon; |
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|
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/** |
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* Will force all other threads to shutdown cleanly. |
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* @author Christian Lins |
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* @since sonews/0.5.0 |
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*/ |
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class ShutdownHook extends Thread |
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{
|
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|
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/** |
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* Called when the JVM exits. |
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*/ |
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@Override |
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public void run() |
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{
|
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System.out.println("sonews: Trying to shutdown all threads...");
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|
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Map<Thread, StackTraceElement[]> threadsMap = Thread.getAllStackTraces(); |
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for(Thread thread : threadsMap.keySet()) |
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{
|
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// Interrupt the thread if it's a AbstractDaemon |
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AbstractDaemon daemon; |
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if(thread instanceof AbstractDaemon && thread.isAlive()) |
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{
|
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try |
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{
|
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daemon = (AbstractDaemon)thread; |
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daemon.shutdownNow(); |
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} |
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catch(SQLException ex) |
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{
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System.out.println("sonews: " + ex);
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} |
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} |
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} |
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|
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for(Thread thread : threadsMap.keySet()) |
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{
|
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AbstractDaemon daemon; |
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if(thread instanceof AbstractDaemon && thread.isAlive()) |
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{
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daemon = (AbstractDaemon)thread; |
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System.out.println("sonews: Waiting for " + daemon + " to exit...");
|
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try |
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{
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daemon.join(500); |
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} |
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catch(InterruptedException ex) |
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{
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System.out.println(ex.getLocalizedMessage()); |
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} |
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} |
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} |
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|
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// We have notified all not-sleeping AbstractDaemons of the shutdown; |
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// all other threads can be simply purged on VM shutdown |
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|
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System.out.println("sonews: Clean shutdown.");
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} |
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|
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} |