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dead.cpp

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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, 2015
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/search/seq/dead.hh>
00035 
00036 namespace Gecode { namespace Search { namespace Seq {
00037 
00039   template<class Tracer>
00040   class GECODE_SEARCH_EXPORT Dead : public Engine {
00041   protected:
00043     Tracer tracer;
00045     Statistics stat;
00046   public:
00048     Dead(const Options& o, const Statistics& stat0);
00050     virtual Space* next(void);
00052     virtual Statistics statistics(void) const;
00054     virtual bool stopped(void) const;
00056     virtual ~Dead(void);
00057   };
00058 
00059   template<class Tracer>
00060   Dead<Tracer>::Dead(const Options& o, const Statistics& stat0)
00061     : tracer(o.tracer), stat(stat0) {
00062     tracer.engine(SearchTracer::EngineType::AOE, 1U);
00063     tracer.worker();
00064   }
00065 
00066   template<class Tracer>
00067   Space*
00068   Dead<Tracer>::next(void) {
00069     return NULL;
00070   }
00071 
00072   template<class Tracer>
00073   bool
00074   Dead<Tracer>::stopped(void) const {
00075     return false;
00076   }
00077 
00078   template<class Tracer>
00079   Statistics
00080   Dead<Tracer>::statistics(void) const {
00081     return stat;
00082   }
00083 
00084   template<class Tracer>
00085   Dead<Tracer>::~Dead(void) {
00086     tracer.done();
00087   }
00088 
00089   Engine*
00090   dead(const Options& o, const Statistics& stat) {
00091     if (o.tracer)
00092       return new Dead<TraceRecorder>(o,stat);
00093     else
00094       return new Dead<NoTraceRecorder>(o,stat);
00095   }
00096 
00097 
00098 }}}
00099 
00100 // STATISTICS: search-seq