From 66119eb461a99195b33601701c738d9d7eefbe5a Mon Sep 17 00:00:00 2001
From: Guido Kanschat <dr.guido.kanschat@gmail.com>
Date: Thu, 11 Nov 2010 21:07:28 +0000
Subject: [PATCH] Add a function that resets the pointer and deletes the object
 pointed to

git-svn-id: https://svn.dealii.org/trunk@22695 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/include/deal.II/base/smartpointer.h | 24 +++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/deal.II/include/deal.II/base/smartpointer.h b/deal.II/include/deal.II/base/smartpointer.h
index 4f3bd1b873..36621b14ec 100644
--- a/deal.II/include/deal.II/base/smartpointer.h
+++ b/deal.II/include/deal.II/base/smartpointer.h
@@ -1,8 +1,7 @@
 //---------------------------------------------------------------------------
 //    $Id$
-//    Version: $Name$
 //
-//    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009 by the deal.II authors
+//    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009, 2010 by the deal.II authors
 //
 //    This file is subject to QPL and may not be  distributed
 //    without copyright and license information. Please refer
@@ -157,6 +156,12 @@ class SmartPointer
 				      */
     SmartPointer<T,P> & operator= (const SmartPointer<T,P> &tt);
 
+				     /**
+				      * Delete the object pointed to
+				      * and set the pointer to zero.
+				      */
+    void clear ();
+    
 				     /**
 				      * Conversion to normal pointer.
 				      */
@@ -315,6 +320,21 @@ SmartPointer<T,P>::~SmartPointer ()
 
 
 
+template <typename T, typename P>
+inline
+void
+SmartPointer<T,P>::clear ()
+{
+  if (t != 0)
+    {
+      t->unsubscribe(id);
+      delete t;
+      t = 0;
+    }
+}
+
+
+
 template <typename T, typename P>
 inline
 SmartPointer<T,P> & SmartPointer<T,P>::operator = (T *tt)
-- 
2.39.5