cumulatives.hh

00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Mikael Lagerkvist <lagerkvist@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Mikael Lagerkvist, 2005
00008  *
00009  *  Last modified:
00010  *     $Date: 2009-02-04 13:52:42 +0100 (Wed, 04 Feb 2009) $ by $Author: schulte $
00011  *     $Revision: 8139 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 /*
00039  */
00040 
00041 #ifndef __GECODE_INT_CUMULATIVES_HH__
00042 #define __GECODE_INT_CUMULATIVES_HH__
00043 
00044 #include <gecode/int.hh>
00045 
00046 namespace Gecode { namespace Int { namespace Cumulatives {
00047 
00092   template <class ViewM, class ViewD, class ViewH, class View>
00093   class Val : public Propagator {
00094   protected:
00095     ViewArray<ViewM>  machine;
00096     ViewArray<View>   start;
00097     ViewArray<ViewD>  duration;
00098     ViewArray<View>   end;
00099     ViewArray<ViewH>  height;
00100     SharedArray<int>  limit;
00101     const bool        at_most;
00102 
00103     Val(Space& home, bool share, Val<ViewM, ViewD, ViewH, View>& p);
00104     Val(Space& home, const ViewArray<ViewM>&, const ViewArray<View>&,
00105         const ViewArray<ViewD>&, const ViewArray<View>&,
00106         const ViewArray<ViewH>&, const SharedArray<int>&, bool);
00107 
00108     ExecStatus prune(Space& home, int low, int up, int r,
00109                      int ntask, int sheight,
00110                      int* contribution,
00111                      int* prune_tasks, int& prune_tasks_size);
00112   public:
00114     virtual Actor* copy(Space& home, bool share);
00116     virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
00118     virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
00120     static ExecStatus post(Space& home, const ViewArray<ViewM>&,
00121                            const ViewArray<View>&, const ViewArray<ViewD>&,
00122                            const ViewArray<View>&, const ViewArray<ViewH>&,
00123                            const SharedArray<int>&, bool);
00125     virtual size_t dispose(Space& home);
00126   };
00127 
00128 
00129 }}}
00130 
00131 #include <gecode/int/cumulatives/val.hpp>
00132 
00133 #endif
00134 
00135 // STATISTICS: int-prop
00136