IoWithinStackLimits function (wdm.h)

The IoWithinStackLimits routine determines whether a region of memory is within the stack limit of the current thread.

Syntax

LOGICAL IoWithinStackLimits(
  [in] ULONG_PTR RegionStart,
  [in] SIZE_T    RegionSize
);

[in] RegionStart

A pointer to the start of the region.

[in] RegionSize

The size of the region.

IoWithinStackLimits returns TRUE is the current thread's stack contains the region completely and FALSE otherwise.

The IoWithinStackLimits routine considers all possible stack segments and the DPC stack, if necessary.

For drivers that use KeExpandKernelStackAndCallout, IoWithinStackLimits considers only the current thread.

Requirement	Value
Target Platform	Universal
Header	wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)
Library	NtosKrnl.lib
DLL	NtosKrnl.exe
IRQL	IRQL <= APC_LEVEL