L_GetMemoryThresholds

#include "l_bitmap.h"

L_LTKRN_API L_VOID L_GetMemoryThresholds(pnTiledThreshold, pnMaxConvSize, pnTileSize, pnConvTiles, pnConvBuffers);

L_INT* pnTiledThreshold;

pointer to a variable to be updated with the tiled threshold

L_SSIZE_T* pnMaxConvSize;

pointer to a variable to be updated with the maximum size for conventional memory

L_SSIZE_T* pnTileSize;

pointer to a variable to be updated with the tile size

L_INT* pnConvTiles;

pointer to a variable to be updated with the maximum number of conventional tiles

L_INT* pnConvBuffers;

pointer to a variable to be updated with the number of buffers in conventional memory

Gets the current memory restrictions set using L_SetMemoryThresholds.

Parameter

Description

pnTiledThreshold

Pointer to a variable to be updated with a value that represents the minimum amount of free memory required to allow the allocation of conventional bitmaps. For more information, refer to L_SetMemoryThresholds.

pnMaxConvSize

Pointer to a variable to be updated with a value that represents the maximum size for a conventional bitmap. For more information, refer to L_SetMemoryThresholds.

pnTileSize

Pointer to a variable to be updated with a value that represents the size of the tile for tiled bitmaps. For more information, refer to L_SetMemoryThresholds.

pnConvTiles

Pointer to a variable to be updated with a value that represents the maximum number of tiles that will reside in conventional memory at any time. For more information, refer to L_SetMemoryThresholds.

pnConvBuffers

Pointer to a variable to be updated with the number of buffers in conventional memory. For more information, refer to L_SetMemoryThresholds.

Comments

This function will allow you to retrieve the parameters set with L_SetMemoryThresholds. For more information on the various thresholds, refer to L_SetMemoryThresholds.

Pass NULL for any parameter you are not interested in retrieving.

Returns

None.

Required DLLs and Libraries

LTKRN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

See Also

Functions:

L_SetMemoryThresholds, L_GetBitmapMemoryInfo, L_SetBitmapMemoryInfo, L_SetTempDirectory, L_GetTempDirectory

Topics:

Memory Storage Types for Bitmaps

 

Raster Image Functions: Creating and Deleting Images

Example

This example doubles the maximum size for a conventional bitmap.

L_INT GetMemoryThresholdsExample(L_VOID) 
{ 
   L_INT nRet; 
   L_SSIZE_T zMaxConvSize;  
 
   /* Get only the max conventional size value */ 
   L_GetMemoryThresholds (NULL, &zMaxConvSize, NULL, NULL, NULL);  
 
   /* Double the max conventional size value */ 
   nRet = L_SetMemoryThresholds (0, zMaxConvSize * 2, 0, 0, 0, MEM_MAXCONVSIZE); 
   if(nRet != SUCCESS) 
      return nRet; 
 
   return SUCCESS; 
} 

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