From: wolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 16 Aug 2001 11:10:49 +0000 (+0000)
Subject: Derive Solver and Preconditioners from Subscriptor. Let PreconditionLACSolver use... 
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0c1224422c2c4a9e09bdf8a65425591626f2e01;p=dealii-svn.git

Derive Solver and Preconditioners from Subscriptor. Let PreconditionLACSolver use SmartPointers instead of C style pointers.


git-svn-id: https://svn.dealii.org/trunk@4885 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/doc/news/2001/c-3-1.html b/deal.II/doc/news/2001/c-3-1.html
index e195ea91b1..2b4b10178f 100644
--- a/deal.II/doc/news/2001/c-3-1.html
+++ b/deal.II/doc/news/2001/c-3-1.html
@@ -331,6 +331,20 @@ documentation, etc</a>.
 <h3>lac</h3>
 
 <ol>
+  <li> <p>
+       Changed: Base class <code class="class">Solver</code> and all
+       <code class="class">Preconditioner</code> classes are now
+       derived from <code class="class">Subscriptor</code>.
+       Class <code class="class">PreconditionLACSolver</code> now uses
+       smartpointers to the given solver and preconditioner
+       objects. You will, therefore, have to derive your own
+       preconditioners and solvers from <code
+       class="class">Subscriptor</code> if you want to use it with
+       <code class="class">PreconditionLACSolver</code>.
+       <br>
+       (WB 2001/08/16)
+       </p>
+
   <li> <p>
        New: Classes <code class="class">Vector</code> and
        <code class="class">BlockVector</code> now have member functions
diff --git a/deal.II/lac/include/lac/precondition.h b/deal.II/lac/include/lac/precondition.h
index a57c19ac6d..919905cddb 100644
--- a/deal.II/lac/include/lac/precondition.h
+++ b/deal.II/lac/include/lac/precondition.h
@@ -95,7 +95,7 @@ class PreconditionIdentity : public Subscriptor
  * @author Guido Kanschat, Wolfgang Bangerth, 1999
  */
 template<class MATRIX = SparseMatrix<double>, class VECTOR = Vector<double> >
-class PreconditionUseMatrix
+class PreconditionUseMatrix : public Subscriptor
 {
   public:
 				     /**
@@ -148,7 +148,7 @@ class PreconditionUseMatrix
  * @author Guido Kanschat, 2000
  */
 template<class MATRIX = SparseMatrix<double> >
-class PreconditionRelaxation
+class PreconditionRelaxation : public Subscriptor
 {
   public:
 				     /**
@@ -419,7 +419,7 @@ class PreconditionLACSolver : public Subscriptor
 				     /**
 				      * The solver object to use.
 				      */
-    SOLVER* solver;
+    SmartPointer<SOLVER> solver;
 
 				     /**
 				      * The matrix in use.
@@ -429,11 +429,9 @@ class PreconditionLACSolver : public Subscriptor
 				     /**
 				      * The preconditioner to use.
 				      */
-    const PRECONDITION* precondition;
+    SmartPointer<const PRECONDITION> precondition;
 };
 
-//TODO:[?] Use SmartPointer for SOLVER and PRECONDITION above?
-// Another Subscriptor?
 
 
 /**
diff --git a/deal.II/lac/include/lac/solver.h b/deal.II/lac/include/lac/solver.h
index 1a8b33a7ee..0caecaf5a0 100644
--- a/deal.II/lac/include/lac/solver.h
+++ b/deal.II/lac/include/lac/solver.h
@@ -13,8 +13,10 @@
 #ifndef __deal2__solver_h
 #define __deal2__solver_h
 
-template<typename number> class Vector;
-template<class VECTOR>  class VectorMemory;
+#include <base/subscriptor.h>
+
+template <typename number> class Vector;
+template <class VECTOR>    class VectorMemory;
 class SolverControl;
 
 
@@ -133,7 +135,7 @@ class SolverControl;
  * @author Wolfgang Bangerth, Guido Kanschat, Ralf Hartmann, 1997-2001
  */
 template <class Vector = ::Vector<double> >
-class Solver
+class Solver : public Subscriptor
 {
   public:
 				     /**