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OR-Tools
8.2
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A search monitor is a simple set of callbacks to monitor all search events.
Definition at line 3635 of file constraint_solver.h.
Public Member Functions | |
SearchMonitor (Solver *const s) | |
~SearchMonitor () override | |
virtual void | EnterSearch () |
Beginning of the search. More... | |
virtual void | RestartSearch () |
Restart the search. More... | |
virtual void | ExitSearch () |
End of the search. More... | |
virtual void | BeginNextDecision (DecisionBuilder *const b) |
Before calling DecisionBuilder::Next. More... | |
virtual void | EndNextDecision (DecisionBuilder *const b, Decision *const d) |
After calling DecisionBuilder::Next, along with the returned decision. More... | |
virtual void | ApplyDecision (Decision *const d) |
Before applying the decision. More... | |
virtual void | RefuteDecision (Decision *const d) |
Before refuting the decision. More... | |
virtual void | AfterDecision (Decision *const d, bool apply) |
Just after refuting or applying the decision, apply is true after Apply. More... | |
virtual void | BeginFail () |
Just when the failure occurs. More... | |
virtual void | EndFail () |
After completing the backtrack. More... | |
virtual void | BeginInitialPropagation () |
Before the initial propagation. More... | |
virtual void | EndInitialPropagation () |
After the initial propagation. More... | |
virtual bool | AcceptSolution () |
This method is called when a solution is found. More... | |
virtual bool | AtSolution () |
This method is called when a valid solution is found. More... | |
virtual void | NoMoreSolutions () |
When the search tree is finished. More... | |
virtual bool | LocalOptimum () |
When a local optimum is reached. More... | |
virtual bool | AcceptDelta (Assignment *delta, Assignment *deltadelta) |
virtual void | AcceptNeighbor () |
After accepting a neighbor during local search. More... | |
virtual void | AcceptUncheckedNeighbor () |
After accepting an unchecked neighbor during local search. More... | |
virtual bool | IsUncheckedSolutionLimitReached () |
Returns true if the limit of solutions has been reached including unchecked solutions. More... | |
Solver * | solver () const |
virtual void | PeriodicCheck () |
Periodic call to check limits in long running methods. More... | |
virtual int | ProgressPercent () |
Returns a percentage representing the propress of the search before reaching limits. More... | |
virtual void | Accept (ModelVisitor *const visitor) const |
Accepts the given model visitor. More... | |
virtual void | Install () |
Registers itself on the solver such that it gets notified of the search and propagation events. More... | |
virtual std::string | DebugString () const |
Static Public Attributes | |
static constexpr int | kNoProgress = -1 |
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inlineexplicit |
Definition at line 3639 of file constraint_solver.h.
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inlineoverride |
Definition at line 3640 of file constraint_solver.h.
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Accepts the given model visitor.
Reimplemented in RegularLimit, and OptimizeVar.
Definition at line 2890 of file constraint_solver.cc.
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Reimplemented in OptimizeVar.
Definition at line 2884 of file constraint_solver.cc.
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After accepting a neighbor during local search.
Definition at line 2887 of file constraint_solver.cc.
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This method is called when a solution is found.
It asserts whether the solution is valid. A value of false indicates that the solution should be discarded.
Reimplemented in OptimizeVar.
Definition at line 2880 of file constraint_solver.cc.
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After accepting an unchecked neighbor during local search.
Reimplemented in SearchLog.
Definition at line 2888 of file constraint_solver.cc.
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Just after refuting or applying the decision, apply is true after Apply.
This is called only if the Apply() or Refute() methods have not failed.
Definition at line 2875 of file constraint_solver.cc.
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Before applying the decision.
Reimplemented in SearchLog.
Definition at line 2873 of file constraint_solver.cc.
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This method is called when a valid solution is found.
If the return value is true, then search will resume after. If the result is false, then search will stop there.
Reimplemented in SearchLog, ImprovementSearchLimit, and OptimizeVar.
Definition at line 2881 of file constraint_solver.cc.
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Just when the failure occurs.
Reimplemented in DemonProfiler, and SearchLog.
Definition at line 2876 of file constraint_solver.cc.
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Before the initial propagation.
Reimplemented in SearchLog.
Definition at line 2878 of file constraint_solver.cc.
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Before calling DecisionBuilder::Next.
Reimplemented in OptimizeVar, and SearchLimit.
Definition at line 2870 of file constraint_solver.cc.
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inlinevirtualinherited |
Reimplemented in SymmetryManager, ExchangeSubtrip, RelocateSubtrip, PairNodeSwapActiveOperator< swap_first >, RelocateExpensiveChain, FilteredHeuristicCloseNodesLNSOperator, FilteredHeuristicExpensiveChainLNSOperator, RelocatePathAndHeuristicInsertUnperformedOperator, FilteredHeuristicPathLNSOperator, IndexPairSwapActiveOperator, SwapIndexPairOperator, PairExchangeRelocateOperator, PairExchangeOperator, LightPairRelocateOperator, PairRelocateOperator, MakePairInactiveOperator, MakePairActiveOperator, MakeRelocateNeighborsOperator, CPFeasibilityFilter, IntVarFilteredDecisionBuilder, GlobalVehicleBreaksConstraint, Dimension, LocalSearchPhaseParameters, FindOneNeighbor, LocalSearchProfiler, NeighborhoodLimit, PathLns, LinKernighan, TSPLns, TSPOpt, ExtendedSwapActiveOperator, SwapActiveOperator, MakeChainInactiveOperator, RelocateAndMakeInactiveOperator, MakeInactiveOperator, MakeActiveAndRelocate, RelocateAndMakeActiveOperator, MakeActiveOperator, Cross, Exchange, Relocate, TwoOpt, PiecewiseLinearExpr, IfThenElseCt, DemonProfiler, ArrayWithOffset< T >, SearchLog, BooleanVar, LocalSearchMonitor, PropagationMonitor, LocalSearchFilterManager, DelayedCallMethod2< T, P, Q >, DelayedCallMethod1< T, P >, DelayedCallMethod0< T >, CallMethod3< T, P, Q, R >, CallMethod2< T, P, Q >, CallMethod1< T, P >, CallMethod0< T >, Pack, Assignment, SequenceVar, RegularLimit, SearchLimit, OptimizeVar, SolutionCollector, IntVarIterator, Constraint, Demon, DecisionBuilder, Decision, PropagationBaseObject, LocalSearchMonitorMaster, and Trace.
Definition at line 3156 of file constraint_solver.h.
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After completing the backtrack.
Definition at line 2877 of file constraint_solver.cc.
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After the initial propagation.
Reimplemented in SearchLog.
Definition at line 2879 of file constraint_solver.cc.
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After calling DecisionBuilder::Next, along with the returned decision.
Reimplemented in SymmetryManager.
Definition at line 2871 of file constraint_solver.cc.
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Beginning of the search.
Reimplemented in SearchLog, SearchLimit, OptimizeVar, and SolutionCollector.
Definition at line 2867 of file constraint_solver.cc.
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End of the search.
Reimplemented in LocalSearchProfiler, SearchLog, and RegularLimit.
Definition at line 2869 of file constraint_solver.cc.
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Registers itself on the solver such that it gets notified of the search and propagation events.
Reimplemented in LocalSearchProfiler, DemonProfiler, LocalSearchMonitor, PropagationMonitor, LocalSearchMonitorMaster, and Trace.
Definition at line 2892 of file constraint_solver.cc.
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Returns true if the limit of solutions has been reached including unchecked solutions.
Reimplemented in RegularLimit.
Definition at line 3706 of file constraint_solver.h.
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When a local optimum is reached.
If 'true' is returned, the last solution is discarded and the search proceeds with the next one.
Definition at line 2883 of file constraint_solver.cc.
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When the search tree is finished.
Reimplemented in SearchLog.
Definition at line 2882 of file constraint_solver.cc.
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Periodic call to check limits in long running methods.
Reimplemented in SearchLimit.
Definition at line 2889 of file constraint_solver.cc.
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Returns a percentage representing the propress of the search before reaching limits.
Reimplemented in RegularLimit.
Definition at line 3715 of file constraint_solver.h.
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Before refuting the decision.
Reimplemented in SymmetryManager, SearchLog, SearchLimit, and OptimizeVar.
Definition at line 2874 of file constraint_solver.cc.
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Restart the search.
Reimplemented in LocalSearchProfiler, and DemonProfiler.
Definition at line 2868 of file constraint_solver.cc.
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inline |
Definition at line 3708 of file constraint_solver.h.
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staticconstexpr |
Definition at line 3637 of file constraint_solver.h.