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RtlFillMemoryNonTemporal function (wdm.h)

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This function fills a block of memory with the specified fill value using non-temporal moves that do not pollute the cache.

Syntax

NTSYSAPI VOID RtlFillMemoryNonTemporal(
  VOID        *Destination,
  SIZE_T      Length,
  const UCHAR Value
);

Parameters

Destination

A pointer to the destination memory block to copy the bytes to.

Length

The number of bytes to copy from the source to the destination.

Value

The value to fill the destination memory block with. This value is copied to every byte in the memory block that is defined by Destination and Length.

Return value

This function returns NTSYSAPI VOID.

Remarks

RtlFillMemoryNonTemporal only performs a non-temporal fill for x64-based systems, and only when the Length parameter is 8 bytes or greater. Otherwise, this function is equivalent to RtlFillMemory.

Requirements

Requirement Value
Header wdm.h

See also

RtlFillMemory