scip_mem.c

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/*    Copyright (C) 2002-2019 Konrad-Zuse-Zentrum                            */
/*                            fuer Informationstechnik Berlin                */
/*                                                                           */
/*  SCIP is distributed under the terms of the ZIB Academic License.         */
/*                                                                           */
/*  You should have received a copy of the ZIB Academic License              */
/*  along with SCIP; see the file COPYING. If not visit scip.zib.de.         */
/*                                                                           */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   scip_mem.c
 * @brief  public methods for memory management
 * @author Tobias Achterberg
 * @author Timo Berthold
 * @author Gerald Gamrath
 * @author Robert Lion Gottwald
 * @author Stefan Heinz
 * @author Gregor Hendel
 * @author Thorsten Koch
 * @author Alexander Martin
 * @author Marc Pfetsch
 * @author Michael Winkler
 * @author Kati Wolter
 *
 * @todo check all SCIP_STAGE_* switches, and include the new stages TRANSFORMED and INITSOLVE
 */

/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/

#include <ctype.h>
#include <stdarg.h>
#include <assert.h>
#include <string.h>
#if defined(_WIN32) || defined(_WIN64)
#else
#include <strings.h> /*lint --e{766}*/
#endif


#include "lpi/lpi.h"
#include "nlpi/exprinterpret.h"
#include "nlpi/nlpi.h"
#include "scip/benders.h"
#include "scip/benderscut.h"
#include "scip/branch.h"
#include "scip/branch_nodereopt.h"
#include "scip/clock.h"
#include "scip/compr.h"
#include "scip/concsolver.h"
#include "scip/concurrent.h"
#include "scip/conflict.h"
#include "scip/conflictstore.h"
#include "scip/cons.h"
#include "scip/cons_linear.h"
#include "scip/cutpool.h"
#include "scip/cuts.h"
#include "scip/debug.h"
#include "scip/def.h"
#include "scip/dialog.h"
#include "scip/dialog_default.h"
#include "scip/disp.h"
#include "scip/event.h"
#include "scip/heur.h"
#include "scip/heur_ofins.h"
#include "scip/heur_reoptsols.h"
#include "scip/heur_trivialnegation.h"
#include "scip/heuristics.h"
#include "scip/history.h"
#include "scip/implics.h"
#include "scip/interrupt.h"
#include "scip/lp.h"
#include "scip/mem.h"
#include "scip/message_default.h"
#include "scip/misc.h"
#include "scip/nlp.h"
#include "scip/nodesel.h"
#include "scip/paramset.h"
#include "scip/presol.h"
#include "scip/presolve.h"
#include "scip/pricer.h"
#include "scip/pricestore.h"
#include "scip/primal.h"
#include "scip/prob.h"
#include "scip/prop.h"
#include "scip/reader.h"
#include "scip/relax.h"
#include "scip/reopt.h"
#include "scip/retcode.h"
#include "scip/scipbuildflags.h"
#include "scip/scipcoreplugins.h"
#include "scip/scipgithash.h"
#include "scip/sepa.h"
#include "scip/sepastore.h"
#include "scip/set.h"
#include "scip/sol.h"
#include "scip/solve.h"
#include "scip/stat.h"
#include "scip/syncstore.h"
#include "scip/table.h"
#include "scip/tree.h"
#include "scip/var.h"
#include "scip/visual.h"
#include "xml/xml.h"

#include "scip/scip_mem.h"

#include "scip/pub_message.h"


/* In debug mode, we include the SCIP's structure in scip.c, such that no one can access
 * this structure except the interface methods in scip.c.
 * In optimized mode, the structure is included in scip.h, because some of the methods
 * are implemented as defines for performance reasons (e.g. the numerical comparisons)
 */
#ifndef NDEBUG
#include "scip/struct_scip.h"
#endif

/** returns block memory to use at the current time
 *
 *  @return the block memory to use at the current time.
 */
BMS_BLKMEM* SCIPblkmem(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);
   assert(scip->set != NULL);
   assert(scip->mem != NULL);

   return scip->mem->probmem;
}

/** returns buffer memory for short living temporary objects
 *
 *  @return the buffer memory for short living temporary objects
 */
BMS_BUFMEM* SCIPbuffer(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);
   assert(scip->mem != NULL);

   return scip->mem->buffer;
}

/** returns clean buffer memory for short living temporary objects initialized to all zero
 *
 *  @return the buffer memory for short living temporary objects initialized to all zero
 */
BMS_BUFMEM* SCIPcleanbuffer(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);
   assert(scip->mem != NULL);

   return scip->mem->cleanbuffer;
}

/** returns the total number of bytes used in block and buffer memory
 *
 *  @return the total number of bytes used in block and buffer memory.
 */
SCIP_Longint SCIPgetMemUsed(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);

   return SCIPmemGetUsed(scip->mem);
}

/** returns the total number of bytes in block and buffer memory
 *
 *  @return the total number of bytes in block and buffer memory.
 */
SCIP_Longint SCIPgetMemTotal(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);

   return SCIPmemGetTotal(scip->mem);
}

/** returns the estimated number of bytes used by external software, e.g., the LP solver
 *
 *  @return the estimated number of bytes used by external software, e.g., the LP solver.
 */
SCIP_Longint SCIPgetMemExternEstim(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);

   return SCIPstatGetMemExternEstim(scip->stat);
}

/** calculate memory size for dynamically allocated arrays
 *
 *  @return the memory size for dynamically allocated arrays.
 */
int SCIPcalcMemGrowSize(
   SCIP*                 scip,               /**< SCIP data structure */
   int                   num                 /**< minimum number of entries to store */
   )
{
   assert(scip != NULL);

   return SCIPsetCalcMemGrowSize(scip->set, num);
}

/** extends a dynamically allocated block memory array to be able to store at least the given number of elements;
 *  use SCIPensureBlockMemoryArray() define to call this method!
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 */
SCIP_RETCODE SCIPensureBlockMemoryArray_call(
   SCIP*                 scip,               /**< SCIP data structure */
   void**                arrayptr,           /**< pointer to dynamically sized array */
   size_t                elemsize,           /**< size in bytes of each element in array */
   int*                  arraysize,          /**< pointer to current array size */
   int                   minsize             /**< required minimal array size */
   )
{
   assert(scip != NULL);
   assert(arrayptr != NULL);
   assert(elemsize > 0);
   assert(arraysize != NULL);

   if( minsize > *arraysize )
   {
      int newsize;

      newsize = SCIPsetCalcMemGrowSize(scip->set, minsize);
      SCIP_ALLOC( BMSreallocBlockMemorySize(SCIPblkmem(scip), arrayptr, *arraysize * elemsize, newsize * elemsize) );
      *arraysize = newsize;
   }

   return SCIP_OKAY;
}

/** prints output about used memory */
void SCIPprintMemoryDiagnostic(
   SCIP*                 scip                /**< SCIP data structure */
   )
{
   assert(scip != NULL);
   assert(scip->mem != NULL);
   assert(scip->set != NULL);

   BMSdisplayMemory();

   SCIPmessagePrintInfo(scip->messagehdlr, "\nParameter Block Memory (%p):\n", scip->mem->setmem);
   BMSdisplayBlockMemory(scip->mem->setmem);

   SCIPmessagePrintInfo(scip->messagehdlr, "\nSolution Block Memory (%p):\n", scip->mem->probmem);
   BMSdisplayBlockMemory(scip->mem->probmem);

   SCIPmessagePrintInfo(scip->messagehdlr, "\nMemory Buffers:\n");
   BMSprintBufferMemory(SCIPbuffer(scip));

   SCIPmessagePrintInfo(scip->messagehdlr, "\nClean Memory Buffers:\n");
   BMSprintBufferMemory(SCIPcleanbuffer(scip));
}