diff -r 000000000000 -r 2fdc9cc89502 org/sonews/ShutdownHook.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org/sonews/ShutdownHook.java	Wed Jul 22 14:04:05 2009 +0200
@@ -0,0 +1,84 @@
+/*
+ *   SONEWS News Server
+ *   see AUTHORS for the list of contributors
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sonews;
+
+import java.sql.SQLException;
+import java.util.Map;
+import org.sonews.daemon.AbstractDaemon;
+
+/**
+ * Will force all other threads to shutdown cleanly.
+ * @author Christian Lins
+ * @since sonews/0.5.0
+ */
+class ShutdownHook extends Thread
+{
+
+  /**
+   * Called when the JVM exits.
+   */
+  @Override
+  public void run()
+  {
+    System.out.println("sonews: Trying to shutdown all threads...");
+
+    Map<Thread, StackTraceElement[]> threadsMap = Thread.getAllStackTraces();
+    for(Thread thread : threadsMap.keySet())
+    {
+      // Interrupt the thread if it's a AbstractDaemon
+      AbstractDaemon daemon;
+      if(thread instanceof AbstractDaemon && thread.isAlive())
+      {
+        try
+        {
+          daemon = (AbstractDaemon)thread;
+          daemon.shutdownNow();
+        }
+        catch(SQLException ex)
+        {
+          System.out.println("sonews: " + ex);
+        }
+      }
+    }
+    
+    for(Thread thread : threadsMap.keySet())
+    {
+      AbstractDaemon daemon;
+      if(thread instanceof AbstractDaemon && thread.isAlive())
+      {
+        daemon = (AbstractDaemon)thread;
+        System.out.println("sonews: Waiting for " + daemon + " to exit...");
+        try
+        {
+          daemon.join(500);
+        }
+        catch(InterruptedException ex)
+        {
+          System.out.println(ex.getLocalizedMessage());
+        }
+      }
+    }
+    
+    // We have notified all not-sleeping AbstractDaemons of the shutdown;
+    // all other threads can be simply purged on VM shutdown
+    
+    System.out.println("sonews: Clean shutdown.");
+  }
+  
+}