1 /* Threshold_Watcher and associated classes' declaration and inline functions. 2 Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it> 3 Copyright (C) 2010-2016 BUGSENG srl (http://bugseng.com) 4 5 This file is part of the Parma Polyhedra Library (PPL). 6 7 The PPL is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published by the 9 Free Software Foundation; either version 3 of the License, or (at your 10 option) any later version. 11 12 The PPL is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software Foundation, 19 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA. 20 21 For the most up-to-date information see the Parma Polyhedra Library 22 site: http://bugseng.com/products/ppl/ . */ 23 24 #ifndef PPL_Threshold_Watcher_defs_hh 25 #define PPL_Threshold_Watcher_defs_hh 1 26 27 #include "Threshold_Watcher_types.hh" 28 #include "Handler_types.hh" 29 #include "Pending_List_defs.hh" 30 #include <cassert> 31 32 /*! \brief 33 A class of watchdogs controlling the exceeding of a threshold. 34 35 \tparam Traits 36 A class to set data types and functions for the threshold handling. 37 See \c Parma_Polyhedra_Library::Weightwatch_Traits for an example. 38 */ 39 template <typename Traits> 40 class Parma_Polyhedra_Library::Threshold_Watcher { 41 public: 42 template <typename Flag_Base, typename Flag> 43 Threshold_Watcher(const typename Traits::Delta& delta, 44 const Flag_Base* volatile& holder, 45 Flag& flag); 46 47 Threshold_Watcher(const typename Traits::Delta& delta, 48 void (*function)()); 49 50 ~Threshold_Watcher(); 51 52 private: 53 typedef Implementation::Watchdog::Pending_List<Traits> TW_Pending_List; 54 typedef Implementation::Watchdog::Handler TW_Handler; 55 56 bool expired; 57 const TW_Handler& handler; 58 typename TW_Pending_List::iterator pending_position; 59 60 // Just to prevent their use. 61 Threshold_Watcher(const Threshold_Watcher&); 62 Threshold_Watcher& operator=(const Threshold_Watcher&); 63 64 struct Initialize { 65 //! The ordered queue of pending thresholds. 66 TW_Pending_List pending; 67 }; 68 static Initialize init; 69 70 // Handle the addition of a new threshold. 71 static typename TW_Pending_List::iterator 72 add_threshold(typename Traits::Threshold threshold, 73 const TW_Handler& handler, 74 bool& expired_flag); 75 76 // Handle the removal of a threshold. 77 static typename TW_Pending_List::iterator 78 remove_threshold(typename TW_Pending_List::iterator position); 79 80 //! Check threshold reaching. 81 static void check(); 82 83 }; // class Parma_Polyhedra_Library::Threshold_Watcher 84 85 86 // Templatic initialization of static data member. 87 template <typename Traits> 88 typename 89 Parma_Polyhedra_Library::Threshold_Watcher<Traits>::Initialize 90 Parma_Polyhedra_Library::Threshold_Watcher<Traits>::init; 91 92 #include "Threshold_Watcher_inlines.hh" 93 #include "Threshold_Watcher_templates.hh" 94 95 #endif // !defined(PPL_Threshold_Watcher_defs_hh) 96 97