The IoGetRemainingStackSize routine returns the current amount of available kernel-mode stack space.
ULONG_PTR IoGetRemainingStackSize( );
This function has no parameters.
IoGetRemainingStackSize returns the number of bytes of stack space in the current thread context.
Highest-level drivers, such as file systems, can call this routine, particularly drivers that use recursive code paths. Such a driver would call IoGetRemainingStackSize before launching a recursion to determine whether it should continue processing on an alternate code path.
For Windows Server 2003 Service Pack 1 (SP1) and later versions of Windows, callers of IoGetRemainingStackSize can be running at any IRQL. For earlier versions of Windows, the caller must be running at IRQL <= APC_LEVEL.
|Windows version||Available starting with Windows 2000.|
|Header||wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)|
|IRQL||See Remarks section.|