| author | František Kučera <franta-hg@frantovo.cz> |
| Sun, 06 Nov 2011 00:08:05 +0100 | |
| changeset 116 | 4ddc1020a154 |
| parent 37 | 74139325d305 |
| permissions | -rwxr-xr-x |
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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.daemon; |
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|
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import java.sql.SQLException; |
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import org.sonews.storage.StorageManager; |
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import org.sonews.util.Log; |
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|
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/** |
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* Base class of all sonews threads. |
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* Instances of this class will be automatically registered at the ShutdownHook |
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* to be cleanly exited when the server is forced to exit. |
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* @author Christian Lins |
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* @since sonews/0.5.0 |
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*/ |
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public abstract class AbstractDaemon extends Thread |
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{
|
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|
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/** This variable is write synchronized through setRunning */ |
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private boolean isRunning = false; |
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|
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/** |
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* Protected constructor. Will be called by derived classes. |
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*/ |
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protected AbstractDaemon() |
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{
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setDaemon(true); // VM will exit when all threads are daemons |
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setName(getClass().getSimpleName()); |
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} |
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|
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/** |
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* @return true if shutdown() was not yet called. |
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*/ |
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public boolean isRunning() |
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{
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synchronized (this) {
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return this.isRunning; |
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} |
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} |
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|
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/** |
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* Marks this thread to exit soon. Closes the associated JDBCDatabase connection |
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* if available. |
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* @throws java.sql.SQLException |
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*/ |
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public void shutdownNow() |
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throws SQLException |
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{
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synchronized (this) {
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this.isRunning = false; |
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StorageManager.disableProvider(); |
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} |
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} |
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|
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/** |
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* Calls shutdownNow() but catches SQLExceptions if occurring. |
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*/ |
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public void shutdown() |
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{
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try {
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shutdownNow(); |
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} catch (SQLException ex) {
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Log.get().warning(ex.toString()); |
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} |
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} |
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|
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/** |
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* Starts this daemon. |
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*/ |
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@Override |
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public void start() |
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{
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synchronized (this) {
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this.isRunning = true; |
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} |
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super.start(); |
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} |
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} |