Handler_defs.hh

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/* Handler and derived classes' declaration.
   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
   Copyright (C) 2010-2016 BUGSENG srl (http://bugseng.com)

This file is part of the Parma Polyhedra Library (PPL).

The PPL is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

The PPL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.

For the most up-to-date information see the Parma Polyhedra Library
site: http://bugseng.com/products/ppl/ . */

#ifndef PPL_Handler_defs_hh
#define PPL_Handler_defs_hh 1

#include "Handler_types.hh"

class Parma_Polyhedra_Library::Implementation::Watchdog::Handler {
public:
  virtual void act() const = 0;

  virtual ~Handler();
};


template <typename Flag_Base, typename Flag>
class Parma_Polyhedra_Library::Implementation::Watchdog::Handler_Flag
  : public Handler {
public:
  Handler_Flag(const Flag_Base* volatile& holder, Flag& flag);

  virtual void act() const;

private:
  // Declare holder as reference to volatile pointer to const Flag_Base.
  const Flag_Base* volatile& h;
  Flag& f;
};

class Parma_Polyhedra_Library::Implementation::Watchdog::Handler_Function
  : public Handler {
public:
  Handler_Function(void (* const function)());

  virtual void act() const;

private:
  void (* const f)();
};

#include "Handler_inlines.hh"

#endif // !defined(PPL_Handler_defs_hh)