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diff --git a/tools/gnu/classpath/tools/rmiregistry/RegistryImpl.java b/tools/gnu/classpath/tools/rmiregistry/RegistryImpl.java
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+/* RegistryImpl.java -- the RMI registry implementation
+   Copyright (c) 1996, 1997, 1998, 1999, 2002, 2005, 2006
+   Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath 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 2, or (at your option)
+any later version.
+ 
+GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.classpath.tools.rmiregistry;
+
+import gnu.classpath.tools.common.Persistent;
+
+import java.rmi.AccessException;
+import java.rmi.AlreadyBoundException;
+import java.rmi.NotBoundException;
+import java.rmi.Remote;
+import java.rmi.RemoteException;
+import java.rmi.registry.Registry;
+import java.util.ArrayList;
+import java.util.Map;
+
+/**
+ * The optionally persistent registry implementation.
+ * 
+ * @author Audrius Meskauskas (audriusa@bioinformatics.org)
+ */
+public class RegistryImpl implements Registry
+{
+  /**
+   * The binding table.
+   */
+  Map bindings;
+  
+  /**
+   * Create the registry implementation that uses the given bidirectinal
+   * table to keep the data.
+   */
+  public RegistryImpl(Map aTable)
+  {
+    bindings = aTable;    
+  }
+  
+  /** @inheritDoc */
+  public Remote lookup(String name) throws RemoteException, NotBoundException,
+      AccessException
+  {
+    Object obj = bindings.get(name);
+    if (obj == null)
+      throw new NotBoundException(name);
+    return ((Remote) obj);
+  }
+
+   /** @inheritDoc */
+  public void bind(String name, Remote obj) throws RemoteException,
+      AlreadyBoundException, AccessException
+  {
+    if (Main.verbose)
+      System.out.println("Bind "+name);
+    if (bindings.containsKey(name))
+      throw new AlreadyBoundException(name);
+    bindings.put(name, obj);
+  }
+
+  /** @inheritDoc */
+  public void unbind(String name) throws RemoteException, NotBoundException,
+      AccessException
+  {
+    if (name.equals(Main.STOP))
+      {
+        if (bindings instanceof Persistent)
+          ((Persistent) bindings).writeContent();
+         // Terminate in 10 seconds.
+         System.out.println("Shutdown command received. Will terminate in 10 s");
+         Persistent.timer.schedule(new Persistent.ExitTask(), 10000);
+      }
+    else
+      {
+        if (Main.verbose)
+          System.out.println("Unbind "+name);
+        
+        if (!bindings.containsKey(name))
+          throw new NotBoundException(name);
+        else
+          bindings.remove(name);
+      }
+  }
+
+  /** @inheritDoc */
+  public void rebind(String name, Remote obj) throws RemoteException,
+      AccessException
+  {
+    if (Main.verbose)
+      System.out.println("Rebind "+name);
+    bindings.put(name, obj);
+  }
+
+  /** @inheritDoc */  
+  public String[] list() throws RemoteException, AccessException
+  {
+    // Create a separated array to prevent race conditions.
+    ArrayList keys = new ArrayList(bindings.keySet());
+    int n = keys.size();
+    String[] rt = new String[n];
+    for (int i = 0; i < n; i++)
+      rt[i] = (String) keys.get(i);
+    return rt;
+  }
+}