KeEnterGuardedRegion function (wdm.h)
The KeEnterGuardedRegion routine enters a guarded region, which disables all kernel-mode APC delivery to the current thread.
C++
void KeEnterGuardedRegion();
None
To exit a guarded region entered with KeEnterGuardedRegion, call the KeLeaveGuardedRegion routine. Guarded regions can be nested. APCs are not reenabled until the thread exits the outermost guarded region.
For more information about guarded regions, see Critical Regions and Guarded Regions.
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Server 2003 and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= APC_LEVEL |
| DDI compliance rules | GuardedRegions(wdm), HwStorPortProhibitedDDIs(storport), IrqlKeApcLte2(wdm), WithinCriticalRegion(wdm) |