libmesh_singleton.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2013 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 
19 
20 #ifndef LIBMESH_LIBMESH_SINGLETON_H
21 #define LIBMESH_LIBMESH_SINGLETON_H
22 
23 #include "libmesh/libmesh_common.h"
24 
25 namespace libMesh {
26 
30  class Singleton
31  {
32  protected:
33 
37  Singleton();
38 
42  virtual ~Singleton() {}
43 
44  public:
45 
50  class Setup
51  {
52  protected:
56  Setup ();
57 
58  public:
62  virtual ~Setup() {}
63 
68  virtual void setup () = 0;
69  };
70 
75  static void setup();
76 
81  static void cleanup();
82  };
83 
84 } // namespace libMesh
85 
86 #endif // LIBMESH_LIBMESH_SINGLETON_H

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