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man-prop.hpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2009
00008  *
00009  *  Last modified:
00010  *     $Date: 2010-07-15 12:39:29 +0200 (Thu, 15 Jul 2010) $ by $Author: tack $
00011  *     $Revision: 11199 $
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,
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00035  *
00036  */
00037 
00038 namespace Gecode { namespace Scheduling { namespace Cumulative {
00039   
00040   template<class ManTask>
00041   forceinline
00042   ManProp<ManTask>::ManProp(Home home, int c0, TaskArray<ManTask>& t)
00043     : TaskProp<ManTask,Int::PC_INT_DOM>(home,t), c(c0) {}
00044 
00045   template<class ManTask>
00046   forceinline
00047   ManProp<ManTask>::ManProp(Space& home, bool shared, 
00048                             ManProp<ManTask>& p) 
00049     : TaskProp<ManTask,Int::PC_INT_DOM>(home,shared,p), c(p.c) {}
00050 
00051   template<class ManTask>
00052   forceinline ExecStatus 
00053   ManProp<ManTask>::post(Home home, int c, TaskArray<ManTask>& t) {
00054     // Check that tasks do not overload resource
00055     for (int i=t.size(); i--; )
00056       if (t[i].c() > c)
00057         return ES_FAILED;
00058     if (t.size() > 1)
00059       (void) new (home) ManProp<ManTask>(home,c,t);
00060     return ES_OK;
00061   }
00062 
00063   template<class ManTask>
00064   Actor* 
00065   ManProp<ManTask>::copy(Space& home, bool share) {
00066     return new (home) ManProp<ManTask>(home,share,*this);
00067   }
00068 
00069   template<class ManTask>  
00070   forceinline size_t 
00071   ManProp<ManTask>::dispose(Space& home) {
00072     (void) TaskProp<ManTask,Int::PC_INT_DOM>::dispose(home);
00073     return sizeof(*this);
00074   }
00075 
00076   template<class ManTask>
00077   ExecStatus 
00078   ManProp<ManTask>::propagate(Space& home, const ModEventDelta& med) {
00079     // Only bounds changes?
00080     if (Int::IntView::me(med) != Int::ME_INT_DOM)
00081       GECODE_ES_CHECK(overload(home,c,t));
00082     GECODE_ES_CHECK(edgefinding(home,c,t));
00083     return basic(home,*this,c,t);
00084   }
00085 
00086 }}}
00087 
00088 // STATISTICS: scheduling-prop