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RtlClearAllBits routine

The RtlClearAllBits routine sets all bits in a given bitmap variable to zero.

Syntax


VOID RtlClearAllBits(
  _In_  PRTL_BITMAP BitMapHeader
);

Parameters

BitMapHeader [in]

A pointer to the RTL_BITMAP structure that describes the bitmap. This structure must have been initialized by the RtlInitializeBitMap routine.

Return value

None

Remarks

Callers of RtlClearAllBits must be running at IRQL <= APC_LEVEL if the memory that contains the bitmap variable is pageable or the memory at BitMapHeader is pageable. Otherwise, RtlClearAllBits can be called at any IRQL.

Requirements

Version

Available starting with Windows 2000.

Header

Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

Library

Ntoskrnl.lib

IRQL

<= APC_LEVEL (See Remarks section)

See also

RtlAreBitsClear
RtlAreBitsSet
RTL_BITMAP
RtlClearBits
RtlFindSetBits
RtlFindSetBitsAndClear
RtlInitializeBitMap
RtlNumberOfSetBits

 

 

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