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The IoGetStackLimits routine returns the boundaries of the current thread's stack frame.
Syntax
void IoGetStackLimits(
[out] PULONG_PTR LowLimit,
[out] PULONG_PTR HighLimit
);
Parameters
[out] LowLimit
Pointer to a caller-supplied variable in which this routine returns the lower offset of the current thread's stack frame.
[out] HighLimit
Pointer to a caller-supplied variable in which this routine returns the higher offset of the current thread's stack frame.
Return value
None
Remarks
Highest-level drivers can call this routine, particularly file systems that have been passed a pointer to a ___location on the current thread's stack.
In Windows Server 2003 Service Pack 1 (SP1) and later versions of Windows, callers of IoGetStackLimits can be running at any IRQL. For earlier operating systems, the caller must be running at IRQL <= APC_LEVEL.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | See Remarks section. |