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diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/rmi/dgc/LeaseRenewingTask.java b/gcc-4.4.3/libjava/classpath/gnu/java/rmi/dgc/LeaseRenewingTask.java
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+/* LeaseRenewingTask.java -- The task to renew the lease.
+   Copyright (C) 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.java.rmi.dgc;
+
+import gnu.java.rmi.server.UnicastRef;
+
+import java.lang.ref.WeakReference;
+import java.rmi.dgc.Lease;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.WeakHashMap;
+
+/**
+ * The task to renew the lease to some object reference. The UnicastRef
+ * being renewed is stored as a weak reference. So the presence of the
+ * sheduled task does not prevent it from being garbage collected. If the
+ * reference has not been garbage collected, the task is resheduled after
+ * the lease is renewed.
+ * 
+ *  @author Audrius Meskauskas (Audriusa@Bioinformatics.org)
+ */
+public class LeaseRenewingTask
+{ 
+  /**
+   * The sheduled timer task to call the renew() method.
+   */
+  class LeaseTimerTask extends TimerTask
+  {
+    public void run()
+    {
+      renew();
+    }
+  }
+  
+  /**
+   * The default requested lease duration time (one minute by default).
+   */
+  public static long REQUEST_LEASE_DURATION =  60000;
+  
+  /**
+   * The reference to the UnicastRef that must renew its lease until not
+   * garbage collected. The different members of this list may point to the
+   * different instances of the UnicastRef's, but these references are
+   * pointing to the same remote object (they .equals() returns
+   * true when comparing with each other). Using LinkedList to make
+   * frequent deletions from the middle easy.
+   */
+  LinkedList ref = new LinkedList();
+  
+  /**
+   * The granted (or supposed) lease.
+   */
+  Lease lease = new Lease(null, REQUEST_LEASE_DURATION);
+  
+  /**
+   * The timer, shared by all lease renewing tasks. The same instance is also
+   * used for the reference protector discarding in DGCImpl.
+   */
+  static Timer timer = new Timer(true);
+  
+  /**
+   * Maps the UnicastRef to its renewing task.
+   */
+  static WeakHashMap existingTasks = new WeakHashMap();  
+  
+  /**
+   * Creates the lease renewing task that renews the lease of the given
+   * UnicastRef until it is not collected. This constructor requests the lease
+   * value from the server and schedules the lease renewal action.
+   * 
+   * @param renewIt the reference that must be renewed.
+   */
+  public LeaseRenewingTask(UnicastRef renewIt)
+  {
+    lease = notifyDGC(renewIt);
+    if (lease != null)
+      {
+        schedule(lease);
+        ref.add(new WeakReference(renewIt));
+      }
+  }
+  
+  /**
+   * Schedule periodic leases for the given UnicastRef reference.
+   * 
+   * @param renewIt the reference, for that the leases must be scheduled.
+   */
+  public static void scheduleLeases(UnicastRef renewIt)
+  {
+    // No need to schedule leases for null.
+    if (renewIt == null)
+      return;
+    try {
+    synchronized (existingTasks)
+      {
+        // Check maybe the task for refreshing this remote object already
+        // exists.
+        LeaseRenewingTask task = (LeaseRenewingTask) existingTasks.get(renewIt);
+
+        if (task != null)
+          {
+            // Extend the reference list only. The scheduling must be
+            // alredy done with the previous lease.
+            synchronized (task.ref)
+              {
+                task.ref.add(new WeakReference(renewIt));
+              }
+          }
+        else
+          existingTasks.put(renewIt, new LeaseRenewingTask(renewIt));
+      }
+    }
+    catch (Exception ex)
+    {
+      InternalError ierr = new InternalError("Lease for "+renewIt);
+      ierr.initCause(ex);
+      throw ierr;
+    }
+  }
+  
+  /**
+   * Shedule the renewing call, taking into consideration that the following
+   * lease was granted.
+   * 
+   * @param lease the lease that was granted.
+   */
+  public void schedule(Lease lease)
+  {
+    long value = lease.getValue();
+    
+    // Shedule a 10 % earlier because some time is needed for the message
+    // to reach the server.
+    long reduced = (value * 90)/100;
+    if (reduced == 0)
+      reduced = value;
+    
+    timer.schedule(new LeaseTimerTask(), reduced);
+  }
+
+  /**
+   * Renew the lease.
+   */
+  public void renew()
+  {
+    Object renewIt = null;
+    // Iterate throw the list of associated references. If all are
+    // discarded, there is no need to renew.
+    synchronized (ref)
+    {
+      Iterator iter = ref.iterator();
+      WeakReference w;
+      while (iter.hasNext() && renewIt == null)
+        {
+          w = (WeakReference) iter.next();
+          renewIt = w.get();
+          if (renewIt == null)
+            // Discard the weak reference if its target has been garbage
+            // collected.
+            iter.remove();
+        }
+    }
+    
+    if (renewIt!=null)
+      {
+        Lease lease = notifyDGC( (UnicastRef) renewIt);
+        
+        // Schedule the next renewing session.
+        if (lease!=null)
+          schedule(lease);
+      }
+      {
+        // All references collected - discard this entry.
+      }
+  }
+  
+  /**
+   * Notify DGC that we still hold this reference.
+   * 
+   * @param renewIt the reference we still have (must not be null).
+   */
+  public Lease notifyDGC(UnicastRef renewIt)
+  {
+    try
+      {
+        return renewIt.notifyDGC(lease);
+      }
+    catch (Exception e)
+      {
+        // Failed to notify.
+        // TODO Take some relevant action in the case if we failed
+        // to notify the remote object owner.
+        return null;
+      }
+  }
+
+}