rbs.hh
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Guido Tack <tack@gecode.org> 00005 * 00006 * Copyright: 00007 * Guido Tack, 2012 00008 * 00009 * Last modified: 00010 * $Date: 2016-04-19 17:19:45 +0200 (Tue, 19 Apr 2016) $ by $Author: schulte $ 00011 * $Revision: 14967 $ 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 #ifndef __GECODE_SEARCH_META_RBS_HH__ 00039 #define __GECODE_SEARCH_META_RBS_HH__ 00040 00041 #include <gecode/search.hh> 00042 00043 namespace Gecode { namespace Search { namespace Meta { 00044 00045 class RBS; 00046 00048 class GECODE_SEARCH_EXPORT RestartStop : public Stop { 00049 template<class,template<class>class> friend class ::Gecode::RBS; 00050 friend class ::Gecode::Search::Meta::RBS; 00051 private: 00053 unsigned long int l; 00055 Stop* m_stop; 00057 bool e_stopped; 00059 Statistics m_stat; 00060 public: 00062 RestartStop(Stop* s); 00064 virtual bool stop(const Statistics& s, const Options& o); 00066 void limit(const Statistics& s, unsigned long int l); 00068 void update(const Search::Statistics& s); 00070 bool enginestopped(void) const; 00072 Statistics metastatistics(void) const; 00073 }; 00074 00076 class GECODE_SEARCH_EXPORT RBS : public Engine { 00077 protected: 00079 Engine* e; 00081 Space* master; 00083 Space* last; 00085 Cutoff* co; 00087 RestartStop* stop; 00089 unsigned long int sslr; 00091 bool shared_data; 00093 bool shared_info; 00095 bool complete; 00097 bool restart; 00099 bool best; 00100 public: 00102 RBS(Space* s, RestartStop* stop0, Engine* e0, 00103 const Search::Statistics& stat, const Options& o, bool best); 00105 virtual Space* next(void); 00107 virtual Statistics statistics(void) const; 00109 virtual bool stopped(void) const; 00111 virtual void constrain(const Space& b); 00113 virtual ~RBS(void); 00114 }; 00115 00116 }}} 00117 00118 #include <gecode/search/meta/rbs.hpp> 00119 00120 #endif 00121 00122 // STATISTICS: search-meta