spot  0.9.2
bddalloc.hh
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1 // Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
2 // département Systèmes Répartis Coopératifs (SRC), Université Pierre
3 // et Marie Curie.
4 //
5 // This file is part of Spot, a model checking library.
6 //
7 // Spot is free software; you can redistribute it and/or modify it
8 // under the terms of the GNU General Public License as published by
9 // the Free Software Foundation; either version 2 of the License, or
10 // (at your option) any later version.
11 //
12 // Spot is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 // License for more details.
16 //
17 // You should have received a copy of the GNU General Public License
18 // along with Spot; see the file COPYING. If not, write to the Free
19 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 // 02111-1307, USA.
21 
22 #ifndef SPOT_MISC_BDDALLOC_HH
23 # define SPOT_MISC_BDDALLOC_HH
24 
25 #include "freelist.hh"
26 #include <list>
27 #include <utility>
28 
29 namespace spot
30 {
33  class bdd_allocator: private free_list
34  {
35  public:
37  bdd_allocator();
39  static void initialize();
41  int allocate_variables(int n);
43  void release_variables(int base, int n);
44 
46  protected:
47  static bool initialized;
48  int lvarnum;
49  private:
51  void extvarnum(int more);
52  virtual int extend(int n);
53  };
54 
55 }
56 
57 #endif // SPOT_MISC_BDDALLOC_HH

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