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pbs.hh
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33 
34 #ifndef __GECODE_SEARCH_SEQ_PBS_HH__
35 #define __GECODE_SEARCH_SEQ_PBS_HH__
36 
37 #include <gecode/search.hh>
38 
39 namespace Gecode { namespace Search { namespace Seq {
40 
43  public:
45  bool done;
47  unsigned long int l;
48  };
49 
52  private:
54  Stop* so;
56  SharedStopInfo* ssi;
57  public:
59  PortfolioStop(Stop* so);
61  void share(SharedStopInfo* ssi);
63  virtual bool stop(const Statistics& s, const Options& o);
64  };
65 
67  class Slave {
68  protected:
73  public:
75  void init(Engine* s, Stop* so);
77  Space* next(void);
79  Statistics statistics(void) const;
81  bool stopped(void) const;
83  void constrain(const Space& b);
85  void run(void);
87  ~Slave(void);
88  };
89 
91  template<bool best>
92  class GECODE_SEARCH_EXPORT PBS : public Engine {
93  protected:
99  unsigned int slice;
103  unsigned int n_slaves;
105  unsigned int cur;
108  public:
110  PBS(Engine** slaves, Stop** stops, unsigned int n,
111  const Statistics& stat, const Search::Options& opt);
113  virtual Space* next(void);
115  virtual Statistics statistics(void) const;
117  virtual bool stopped(void) const;
119  virtual void constrain(const Space& b);
121  virtual ~PBS(void);
122  };
123 
124 }}}
125 
126 #include <gecode/search/seq/pbs.hpp>
127 
128 #endif
129 
130 // STATISTICS: search-seq
Slave * slaves
Slaves.
Definition: pbs.hh:101
Search engine implementation interface
Definition: search.hh:899
Search engine statistics
Definition: search.hh:147
#define GECODE_SEARCH_EXPORT
Definition: search.hh:67
Search engine options
Definition: search.hh:746
void stop(Support::Timer &timer, std::ostream &os)
Get time since start of timer and print user friendly time information.
Definition: script.cpp:42
unsigned int n_slaves
Number of slave engines.
Definition: pbs.hh:103
Stop * stop
Stop object.
Definition: pbs.hh:72
Engine * slave
The slave engine.
Definition: pbs.hh:70
Computation spaces.
Definition: core.hpp:1701
Stop object used for controling slaves in a portfolio.
Definition: pbs.hh:51
unsigned int slice
Size of a slice.
Definition: pbs.hh:99
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
Options opt
The options.
Definition: test.cpp:97
struct Gecode::@593::NNF::@62::@63 b
For binary nodes (and, or, eqv)
Runnable slave of a portfolio master.
Definition: pbs.hh:67
SharedStopInfo ssi
Shared slave information.
Definition: pbs.hh:97
bool slave_stop
Whether a slave has been stopped.
Definition: pbs.hh:107
bool done
Whether search stopped because the slice is done.
Definition: pbs.hh:45
Statistics stat
Master statistics.
Definition: pbs.hh:95
Shared stop information.
Definition: pbs.hh:42
Gecode toplevel namespace
unsigned int cur
Current slave to run.
Definition: pbs.hh:105
Base-class for Stop-object.
Definition: search.hh:799
unsigned long int l
The current failure limit, incremented for each slice.
Definition: pbs.hh:47
Sequential portfolio engine implementation.
Definition: pbs.hh:92