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authorHarpreet2016-09-03 00:36:51 +0530
committerHarpreet2016-09-03 00:36:51 +0530
commita0d9443af147e949c1e6a01ac24749d12593ec5b (patch)
tree1a1955c5482ae608fd7f618b06f4ecc6a0d39a23 /newstructure/thirdparty/linux/include/coin/ClpEventHandler.hpp
parent4b64cf486f5c999fd8167758cae27839f3b50848 (diff)
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-/* $Id: ClpEventHandler.hpp 2156 2015-08-07 14:51:42Z forrest $ */
-// Copyright (C) 2004, International Business Machines
-// Corporation and others. All Rights Reserved.
-// This code is licensed under the terms of the Eclipse Public License (EPL).
-
-#ifndef ClpEventHandler_H
-#define ClpEventHandler_H
-
-#include "ClpSimplex.hpp"
-/** Base class for Clp event handling
-
-This is just here to allow for event handling. By event I mean a Clp event
-e.g. end of values pass.
-
-One use would be to let a user handle a system event e.g. Control-C. This could be done
-by deriving a class MyEventHandler which knows about such events. If one occurs
-MyEventHandler::event() could clear event status and return 3 (stopped).
-
-Clp would then return to user code.
-
-As it is called every iteration this should be fine grained enough.
-
-User can derive and construct from CbcModel - not pretty
-
-*/
-
-class ClpEventHandler {
-
-public:
- /** enums for what sort of event.
-
- These will also be returned in ClpModel::secondaryStatus() as int
- */
- enum Event {
- endOfIteration = 100, // used to set secondary status
- endOfFactorization, // after gutsOfSolution etc
- endOfValuesPass,
- node, // for Cbc
- treeStatus, // for Cbc
- solution, // for Cbc
- theta, // hit in parametrics
- pivotRow, // used to choose pivot row
- presolveStart, // ClpSolve presolve start
- presolveSize, // sees if ClpSolve presolve too big or too small
- presolveInfeasible, // ClpSolve presolve infeasible
- presolveBeforeSolve, // ClpSolve presolve before solve
- presolveAfterFirstSolve, // ClpSolve presolve after solve
- presolveAfterSolve, // ClpSolve presolve after solve
- presolveEnd, // ClpSolve presolve end
- goodFactorization, // before gutsOfSolution
- complicatedPivotIn, // in modifyCoefficients
- noCandidateInPrimal, // tentative end
- looksEndInPrimal, // About to declare victory (or defeat)
- endInPrimal, // Victory (or defeat)
- beforeStatusOfProblemInPrimal,
- startOfStatusOfProblemInPrimal,
- complicatedPivotOut, // in modifyCoefficients
- noCandidateInDual, // tentative end
- looksEndInDual, // About to declare victory (or defeat)
- endInDual, // Victory (or defeat)
- beforeStatusOfProblemInDual,
- startOfStatusOfProblemInDual,
- startOfIterationInDual,
- updateDualsInDual,
- endOfCreateRim,
- slightlyInfeasible,
- modifyMatrixInMiniPresolve,
- moreMiniPresolve,
- modifyMatrixInMiniPostsolve,
- startOfCrossover, // in Idiot
- noTheta // At end (because no pivot)
- };
- /**@name Virtual method that the derived classes should provide.
- The base class instance does nothing and as event() is only useful method
- it would not be very useful NOT providing one!
- */
- //@{
- /** This can do whatever it likes. If return code -1 then carries on
- if 0 sets ClpModel::status() to 5 (stopped by event) and will return to user.
- At present if <-1 carries on and if >0 acts as if 0 - this may change.
- For ClpSolve 2 -> too big return status of -2 and -> too small 3
- */
- virtual int event(Event whichEvent);
- /** This can do whatever it likes. Return code -1 means no action.
- This passes in something
- */
- virtual int eventWithInfo(Event whichEvent, void * info) ;
- //@}
-
-
- /**@name Constructors, destructor */
-
- //@{
- /** Default constructor. */
- ClpEventHandler(ClpSimplex * model = NULL);
- /** Destructor */
- virtual ~ClpEventHandler();
- // Copy
- ClpEventHandler(const ClpEventHandler&);
- // Assignment
- ClpEventHandler& operator=(const ClpEventHandler&);
- /// Clone
- virtual ClpEventHandler * clone() const;
-
- //@}
-
- /**@name Sets/gets */
-
- //@{
- /** set model. */
- void setSimplex(ClpSimplex * model);
- /// Get model
- inline ClpSimplex * simplex() const {
- return model_;
- }
- //@}
-
-
-protected:
- /**@name Data members
- The data members are protected to allow access for derived classes. */
- //@{
- /// Pointer to simplex
- ClpSimplex * model_;
- //@}
-};
-/** Base class for Clp disaster handling
-
-This is here to allow for disaster handling. By disaster I mean that Clp
-would otherwise give up
-
-*/
-
-class ClpDisasterHandler {
-
-public:
- /**@name Virtual methods that the derived classe should provide.
- */
- //@{
- /// Into simplex
- virtual void intoSimplex() = 0;
- /// Checks if disaster
- virtual bool check() const = 0;
- /// saves information for next attempt
- virtual void saveInfo() = 0;
- /// Type of disaster 0 can fix, 1 abort
- virtual int typeOfDisaster();
- //@}
-
-
- /**@name Constructors, destructor */
-
- //@{
- /** Default constructor. */
- ClpDisasterHandler(ClpSimplex * model = NULL);
- /** Destructor */
- virtual ~ClpDisasterHandler();
- // Copy
- ClpDisasterHandler(const ClpDisasterHandler&);
- // Assignment
- ClpDisasterHandler& operator=(const ClpDisasterHandler&);
- /// Clone
- virtual ClpDisasterHandler * clone() const = 0;
-
- //@}
-
- /**@name Sets/gets */
-
- //@{
- /** set model. */
- void setSimplex(ClpSimplex * model);
- /// Get model
- inline ClpSimplex * simplex() const {
- return model_;
- }
- //@}
-
-
-protected:
- /**@name Data members
- The data members are protected to allow access for derived classes. */
- //@{
- /// Pointer to simplex
- ClpSimplex * model_;
- //@}
-};
-#endif