cmain.c

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
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/*  Copyright (c) 2002-2025 Zuse Institute Berlin (ZIB)                      */
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/**@file   Ringpacking/src/cmain.c
 * @brief  Main file for ringpacking pricing example
 * @author Benjamin Mueller
 *
 *  This the file contains the \ref main() main function of the projects. This includes all the default plugins of
 *  \SCIP and the ones which belong to that projects. After that is starts the interactive shell of \SCIP or processes
 *  the shell arguments if given.
 */
#include <stdio.h>
 
#include "scip/scip.h"
#include "scip/scipshell.h"
#include "scip/scipdefplugins.h"
 
#include "cons_rpa.h"
#include "reader_rpa.h"
#include "pricer_rpa.h"
 
#define DEFAULT_TEXFILENAME                  ""        /**< filename for tex output for the best found solution (\"\": disable) */
 
/** creates a SCIP instance with default plugins, evaluates command line parameters, runs SCIP appropriately,
 *  and frees the SCIP instance
 */
static
SCIP_RETCODE runShell(
   int                   argc,               /**< number of shell parameters */
   char**                argv,               /**< array with shell parameters */
   const char*           defaultsetname      /**< name of default settings file */
   )
{
   SCIP* scip = NULL;
 
   /*********
    * Setup *
    *********/
 
   /* initialize SCIP */
   SCIP_CALL( SCIPcreate(&scip) );
 
   /* we explicitly enable the use of a debug solution for this main SCIP instance */
   SCIPenableDebugSol(scip);
 
   /* include default SCIP plugins */
   SCIP_CALL( SCIPincludeDefaultPlugins(scip) );
 
   /* include reader for ringpacking instances */
   SCIP_CALL( SCIPincludeReaderRpa(scip) );
 
   /* include ringpacking constraint handler */
   SCIP_CALL( SCIPincludeConshdlrRpa(scip) );
 
   /* include ringpacking pricer  */
   SCIP_CALL( SCIPincludePricerRpa(scip) );
 
   /* for column generation instances, disable restarts */
   SCIP_CALL( SCIPsetIntParam(scip,"presolving/maxrestarts",0) );
 
   /* turn off all separation algorithms */
   SCIP_CALL( SCIPsetSeparating(scip, SCIP_PARAMSETTING_OFF, TRUE) );
 
   /*
    * miscellaneous parameters
    */
 
   SCIP_CALL( SCIPaddStringParam(scip,
         "ringpacking/texfilename",
         "filename for tex output for the best found solution (\"\": disable)",
         NULL, FALSE, DEFAULT_TEXFILENAME, NULL, NULL) );
 
   /**********************************
    * Process command line arguments *
    **********************************/
   SCIP_CALL( SCIPprocessShellArguments(scip, argc, argv, defaultsetname) );
 
   /********************
    * Deinitialization *
    ********************/
 
   SCIP_CALL( SCIPfree(&scip) );
 
   BMScheckEmptyMemory();
 
   return SCIP_OKAY;
}
 
int
main(
   int                        argc,
   char**                     argv
   )
{
   SCIP_RETCODE retcode;
 
   retcode = runShell(argc, argv, "scip.set");
   if( retcode != SCIP_OKAY )
   {
      SCIPprintError(retcode);
      return -1;
   }
 
   return 0;
}