pricingjob.h

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/*                  This file is part of the program                         */
/*          GCG --- Generic Column Generation                                */
/*                  a Dantzig-Wolfe decomposition based extension            */
/*                  of the branch-cut-and-price framework                    */
/*         SCIP --- Solving Constraint Integer Programs                      */
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/* Copyright (C) 2010-2021 Operations Research, RWTH Aachen University       */
/*                         Zuse Institute Berlin (ZIB)                       */
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/**@file   pricingjob.h
 * @brief  private methods for working with pricing jobs, to be used by the pricing controller only
 * @author Christian Puchert
 */
 
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef GCG_PRICINGJOB_H__
#define GCG_PRICINGJOB_H__
 
#include "struct_pricingjob.h"
#include "type_pricingjob.h"
 
#include "type_pricingprob.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
/** create a pricing job */
SCIP_EXPORT
SCIP_RETCODE GCGpricingjobCreate(
   SCIP*                 scip,               /**< SCIP data structure (master problem) */
   GCG_PRICINGJOB**      pricingjob,         /**< pricing job to be created */
   GCG_PRICINGPROB*      pricingprob,        /**< data structure of the corresponding pricing problem */
   GCG_SOLVER*           solver,             /**< pricing solver responsible for the pricing job */
   int                   chunk               /**< chunk that the pricing problem should belong to */
);
 
/** free a pricing job */
SCIP_EXPORT
void GCGpricingjobFree(
   SCIP*                 scip,               /**< SCIP data structure (master problem) */
   GCG_PRICINGJOB**      pricingjob          /**< pricing job to be freed */
);
 
/** setup a pricing job at the beginning of the pricing loop */
SCIP_EXPORT
SCIP_RETCODE GCGpricingjobSetup(
   SCIP*                 scip,               /**< SCIP data structure (master problem) */
   GCG_PRICINGJOB*       pricingjob,         /**< pricing job */
   SCIP_Bool             heuristic,          /**< shall the pricing job be performed heuristically? */
   int                   scoring,            /**< scoring parameter */
   int                   nroundscol,         /**< number of previous pricing rounds for which the number of improving columns should be counted */
   SCIP_Real             dualsolconv,        /**< dual solution value of corresponding convexity constraint */
   int                   npointsprob,        /**< total number of extreme points generated so far by the pricing problem */
   int                   nraysprob           /**< total number of extreme rays generated so far by the pricing problem */
   );
 
/** reset the pricing solver to be used to the one with the highest priority */
SCIP_EXPORT
void GCGpricingjobResetSolver(
   SCIP*                 scip,               /**< SCIP data structure (master problem) */
   GCG_PRICINGJOB*       pricingjob          /**< pricing job */
   );
 
/** get the next pricing solver to be used, or NULL of there is none */
SCIP_EXPORT
void GCGpricingjobNextSolver(
   SCIP*                 scip,               /**< SCIP data structure (master problem) */
   GCG_PRICINGJOB*       pricingjob          /**< pricing job */
   );
 
/** set the pricing job to be performed exactly */
SCIP_EXPORT
void GCGpricingjobSetExact(
   GCG_PRICINGJOB*       pricingjob          /**< pricing job */
   );
 
/** reset number of heuristic pricing iterations of a pricing job */
SCIP_EXPORT
void GCGpricingjobResetHeuristic(
   GCG_PRICINGJOB*       pricingjob          /**< pricing job */
   );
 
/** update number of heuristic pricing iterations of a pricing job */
SCIP_EXPORT
void GCGpricingjobIncreaseNHeurIters(
   GCG_PRICINGJOB*       pricingjob          /**< pricing job */
   );
 
#ifdef __cplusplus
}
#endif
 
#endif