author | František Kučera <franta-hg@frantovo.cz> |
Sun Oct 16 22:36:46 2011 +0200 (2011-10-16) | |
changeset 82 | 21f413541357 |
parent 35 | ed84c8bdd87b |
permissions | -rwxr-xr-x |
chris@1 | 1 |
/* |
chris@1 | 2 |
* SONEWS News Server |
chris@1 | 3 |
* see AUTHORS for the list of contributors |
chris@1 | 4 |
* |
chris@1 | 5 |
* This program is free software: you can redistribute it and/or modify |
chris@1 | 6 |
* it under the terms of the GNU General Public License as published by |
chris@1 | 7 |
* the Free Software Foundation, either version 3 of the License, or |
chris@1 | 8 |
* (at your option) any later version. |
chris@1 | 9 |
* |
chris@1 | 10 |
* This program is distributed in the hope that it will be useful, |
chris@1 | 11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
chris@1 | 12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
chris@1 | 13 |
* GNU General Public License for more details. |
chris@1 | 14 |
* |
chris@1 | 15 |
* You should have received a copy of the GNU General Public License |
chris@1 | 16 |
* along with this program. If not, see <http://www.gnu.org/licenses/>. |
chris@1 | 17 |
*/ |
chris@1 | 18 |
|
chris@1 | 19 |
package org.sonews.daemon; |
chris@1 | 20 |
|
chris@1 | 21 |
import java.sql.SQLException; |
chris@3 | 22 |
import org.sonews.storage.StorageManager; |
chris@1 | 23 |
import org.sonews.util.Log; |
chris@1 | 24 |
|
chris@1 | 25 |
/** |
chris@1 | 26 |
* Base class of all sonews threads. |
chris@1 | 27 |
* Instances of this class will be automatically registered at the ShutdownHook |
chris@1 | 28 |
* to be cleanly exited when the server is forced to exit. |
chris@1 | 29 |
* @author Christian Lins |
chris@1 | 30 |
* @since sonews/0.5.0 |
chris@1 | 31 |
*/ |
chris@1 | 32 |
public abstract class AbstractDaemon extends Thread |
chris@1 | 33 |
{ |
chris@1 | 34 |
|
cli@37 | 35 |
/** This variable is write synchronized through setRunning */ |
cli@37 | 36 |
private boolean isRunning = false; |
chris@1 | 37 |
|
cli@37 | 38 |
/** |
cli@37 | 39 |
* Protected constructor. Will be called by derived classes. |
cli@37 | 40 |
*/ |
cli@37 | 41 |
protected AbstractDaemon() |
cli@37 | 42 |
{ |
cli@37 | 43 |
setDaemon(true); // VM will exit when all threads are daemons |
cli@37 | 44 |
setName(getClass().getSimpleName()); |
cli@37 | 45 |
} |
cli@37 | 46 |
|
cli@37 | 47 |
/** |
cli@37 | 48 |
* @return true if shutdown() was not yet called. |
cli@37 | 49 |
*/ |
cli@37 | 50 |
public boolean isRunning() |
cli@37 | 51 |
{ |
cli@37 | 52 |
synchronized (this) { |
cli@37 | 53 |
return this.isRunning; |
cli@37 | 54 |
} |
cli@37 | 55 |
} |
cli@37 | 56 |
|
cli@37 | 57 |
/** |
cli@37 | 58 |
* Marks this thread to exit soon. Closes the associated JDBCDatabase connection |
cli@37 | 59 |
* if available. |
cli@37 | 60 |
* @throws java.sql.SQLException |
cli@37 | 61 |
*/ |
cli@37 | 62 |
public void shutdownNow() |
cli@37 | 63 |
throws SQLException |
cli@37 | 64 |
{ |
cli@37 | 65 |
synchronized (this) { |
cli@37 | 66 |
this.isRunning = false; |
cli@37 | 67 |
StorageManager.disableProvider(); |
cli@37 | 68 |
} |
cli@37 | 69 |
} |
cli@37 | 70 |
|
cli@37 | 71 |
/** |
cli@37 | 72 |
* Calls shutdownNow() but catches SQLExceptions if occurring. |
cli@37 | 73 |
*/ |
cli@37 | 74 |
public void shutdown() |
cli@37 | 75 |
{ |
cli@37 | 76 |
try { |
cli@37 | 77 |
shutdownNow(); |
cli@37 | 78 |
} catch (SQLException ex) { |
cli@37 | 79 |
Log.get().warning(ex.toString()); |
cli@37 | 80 |
} |
cli@37 | 81 |
} |
cli@37 | 82 |
|
cli@37 | 83 |
/** |
cli@37 | 84 |
* Starts this daemon. |
cli@37 | 85 |
*/ |
cli@37 | 86 |
@Override |
cli@37 | 87 |
public void start() |
cli@37 | 88 |
{ |
cli@37 | 89 |
synchronized (this) { |
cli@37 | 90 |
this.isRunning = true; |
cli@37 | 91 |
} |
cli@37 | 92 |
super.start(); |
cli@37 | 93 |
} |
chris@1 | 94 |
} |