mem.c

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*         SCIP --- Solving Constraint Integer Programs                      */
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/*  Copyright (c) 2002-2024 Zuse Institute Berlin (ZIB)                      */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
/**@file   mem.c
 * @ingroup OTHER_CFILES
 * @brief  block memory pools and memory buffers
 * @author Tobias Achterberg
 * @author Gerald Gamrath
 */
 
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
 
#include <assert.h>
 
#include "scip/def.h"
#include "scip/mem.h"
#include "scip/pub_message.h"
 
 
 
/** creates block and buffer memory structures */
SCIP_RETCODE SCIPmemCreate(
   SCIP_MEM**            mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   SCIP_ALLOC( BMSallocMemory(mem) );
 
   /* alloc block memory */
   SCIP_ALLOC( (*mem)->setmem = BMScreateBlockMemory(1, 10) );
   SCIP_ALLOC( (*mem)->probmem = BMScreateBlockMemory(1, 10) );
 
   /* alloc memory buffers */
   SCIP_ALLOC( (*mem)->buffer = BMScreateBufferMemory(SCIP_DEFAULT_MEM_ARRAYGROWFAC, SCIP_DEFAULT_MEM_ARRAYGROWINIT, FALSE) );
   SCIP_ALLOC( (*mem)->cleanbuffer = BMScreateBufferMemory(SCIP_DEFAULT_MEM_ARRAYGROWFAC, SCIP_DEFAULT_MEM_ARRAYGROWINIT, TRUE) );
 
   SCIPdebugMessage("created setmem   block memory at <%p>\n", (void*)(*mem)->setmem);
   SCIPdebugMessage("created probmem  block memory at <%p>\n", (void*)(*mem)->probmem);
 
   SCIPdebugMessage("created       buffer memory at <%p>\n", (void*)(*mem)->buffer);
   SCIPdebugMessage("created clean buffer memory at <%p>\n", (void*)(*mem)->cleanbuffer);
 
   return SCIP_OKAY;
}
 
/** frees block and buffer memory structures */
SCIP_RETCODE SCIPmemFree(
   SCIP_MEM**            mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
   if( *mem == NULL )
      return SCIP_OKAY;
 
   /* free memory buffers */
   BMSdestroyBufferMemory(&(*mem)->cleanbuffer);
   BMSdestroyBufferMemory(&(*mem)->buffer);
 
   /* print unfreed memory */
#ifndef NDEBUG
   (void) BMSblockMemoryCheckEmpty((*mem)->setmem);
   (void) BMSblockMemoryCheckEmpty((*mem)->probmem);
#endif
 
   /* free block memory */
   BMSdestroyBlockMemory(&(*mem)->probmem);
   BMSdestroyBlockMemory(&(*mem)->setmem);
 
   BMSfreeMemory(mem);
 
   return SCIP_OKAY;
}
 
/** returns the total number of bytes used in block and buffer memory */
SCIP_Longint SCIPmemGetUsed(
   SCIP_MEM*             mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   return BMSgetBlockMemoryUsed(mem->setmem) + BMSgetBlockMemoryUsed(mem->probmem)
      + BMSgetBufferMemoryUsed(mem->buffer) + BMSgetBufferMemoryUsed(mem->cleanbuffer);
}
 
/** returns the total number of bytes in block and buffer memory */
SCIP_Longint SCIPmemGetTotal(
   SCIP_MEM*             mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   return BMSgetBlockMemoryAllocated(mem->setmem) + BMSgetBlockMemoryAllocated(mem->probmem)
      + BMSgetBufferMemoryUsed(mem->buffer) + BMSgetBufferMemoryUsed(mem->cleanbuffer);
}
 
/** returns the maximal number of used bytes in block memory */
SCIP_Longint SCIPmemGetUsedBlockmemoryMax(
   SCIP_MEM*             mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   return BMSgetBlockMemoryUsedMax(mem->setmem) + BMSgetBlockMemoryUsedMax(mem->probmem);
}
 
/** returns the maximal number of allocated but not used bytes in block memory */
SCIP_Longint SCIPmemGetUnusedBlockmemoryMax(
   SCIP_MEM*             mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   return BMSgetBlockMemoryUnusedMax(mem->setmem) + BMSgetBlockMemoryUnusedMax(mem->probmem);
}
 
/** returns the maximal number of allocated bytes in block memory */
SCIP_Longint SCIPmemGetAllocatedBlockmemoryMax(
   SCIP_MEM*             mem                 /**< pointer to block and buffer memory structure */
   )
{
   assert(mem != NULL);
 
   return BMSgetBlockMemoryAllocatedMax(mem->setmem) + BMSgetBlockMemoryAllocatedMax(mem->probmem);
}