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misc/freelist.hh

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00001 // Copyright (C) 2004  Laboratoire d'Informatique de Paris 6 (LIP6),
00002 // département Systèmes Répartis Coopératifs (SRC), Université Pierre
00003 // et Marie Curie.
00004 //
00005 // This file is part of Spot, a model checking library.
00006 //
00007 // Spot is free software; you can redistribute it and/or modify it
00008 // under the terms of the GNU General Public License as published by
00009 // the Free Software Foundation; either version 2 of the License, or
00010 // (at your option) any later version.
00011 //
00012 // Spot is distributed in the hope that it will be useful, but WITHOUT
00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
00014 // or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
00015 // License for more details.
00016 //
00017 // You should have received a copy of the GNU General Public License
00018 // along with Spot; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
00020 // 02111-1307, USA.
00021 
00022 
00023 #ifndef SPOT_MISC_FREELIST_HH
00024 # define SPOT_MISC_FREELIST_HH
00025 
00026 #include <list>
00027 #include <utility>
00028 
00029 namespace spot
00030 {
00031 
00033   class free_list
00034   {
00035   public:
00036     virtual ~free_list();
00037 
00043     int register_n(int n);
00044 
00046     void release_n(int base, int n);
00047 
00049     std::ostream& dump_free_list(std::ostream& os) const;
00050 
00052     void insert(int base, int n);
00053 
00055     void remove(int base, int n = 0);
00056 
00057   protected:
00058 
00066     virtual int extend(int n) = 0;
00067 
00069     typedef std::pair<int, int> pos_lenght_pair;
00070     typedef std::list<pos_lenght_pair> free_list_type;
00071     free_list_type fl; 
00072 
00074     void remove(free_list_type::iterator i, int base, int n);
00075   };
00076 
00077 }
00078 
00079 #endif // SPOT_MISC_FREELIST_HH

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