L_GetMemoryThresholds (original) (raw)

Summary

Gets the current memory restrictions set using L_SetMemoryThresholds.

Syntax

#include "l_bitmap.h"

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

Parameters

L_INT* 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.

L_SSIZE_T* 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.

L_SSIZE_T* 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.

L_INT* 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.

L_INT* 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; }