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rbs.hh
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Guido Tack <tack@gecode.org>
5 *
6 * Copyright:
7 * Guido Tack, 2012
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
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33
34#ifndef __GECODE_SEARCH_SEQ_RBS_HH__
35#define __GECODE_SEARCH_SEQ_RBS_HH__
36
37#include <gecode/search.hh>
38
39namespace Gecode { namespace Search { namespace Seq {
40
41 class RBS;
42
45 template<class,template<class>class> friend class ::Gecode::RBS;
46 friend class ::Gecode::Search::Seq::RBS;
47 private:
49 unsigned long int l;
51 Stop* m_stop;
53 bool e_stopped;
55 Statistics m_stat;
56 public:
58 RestartStop(Stop* s);
60 virtual bool stop(const Statistics& s, const Options& o);
62 void limit(const Statistics& s, unsigned long int l);
64 void update(const Search::Statistics& s);
66 bool enginestopped(void) const;
68 Statistics metastatistics(void) const;
69 };
70
73 protected:
85 unsigned long int sslr;
91 bool restart;
93 bool best;
94 public:
96 RBS(Space* s, RestartStop* stop0, Engine* e0,
97 const Search::Statistics& stat, const Options& o, bool best);
99 virtual Space* next(void);
101 virtual Statistics statistics(void) const;
103 virtual bool stopped(void) const;
105 virtual void constrain(const Space& b);
107 virtual ~RBS(void);
108 };
109
110}}}
111
113
114#endif
115
116// STATISTICS: search-seq
NNF * l
Left subtree.
struct Gecode::@603::NNF::@65::@66 b
For binary nodes (and, or, eqv)
Base class for cutoff generators for restart-based meta engine.
Definition search.hh:472
Search engine implementation interface
Definition search.hh:899
Search engine options
Definition search.hh:746
Engine for restart-based search.
Definition rbs.hh:72
RestartStop * stop
The stop control object.
Definition rbs.hh:83
bool best
Whether the engine performs best solution search.
Definition rbs.hh:93
Space * master
The master space to restart from.
Definition rbs.hh:77
bool restart
Whether a restart must be performed when next is called.
Definition rbs.hh:91
bool complete
Whether search for the next solution will be complete.
Definition rbs.hh:89
Engine * e
The actual engine.
Definition rbs.hh:75
Space * last
The last solution space (possibly NULL)
Definition rbs.hh:79
unsigned long int sslr
How many solutions since the last restart.
Definition rbs.hh:85
bool shared_info
Whether the slave can share info (AFC) with the master.
Definition rbs.hh:87
Cutoff * co
The cutoff object.
Definition rbs.hh:81
Stop-object for restart engine
Definition rbs.hh:44
Search engine statistics
Definition search.hh:147
Base-class for Stop-object.
Definition search.hh:799
Computation spaces.
Definition core.hpp:1742
Gecode toplevel namespace
#define GECODE_SEARCH_EXPORT
Definition search.hh:67