ExReleaseSpinLockExclusiveFromDpcLevel function (wdm.h)
The ExReleaseSpinLockExclusiveFromDpcLevel routine releases a spin lock that the caller acquired for exclusive access, and leaves the IRQL unchanged.
Syntax
void ExReleaseSpinLockExclusiveFromDpcLevel(
PEX_SPIN_LOCK SpinLock
);
Parameters
SpinLock
[in, out] A pointer to the spin lock to release. The caller must own this spin lock for exclusive access.
Return value
None
Remarks
On entry to this routine, the caller must be running at IRQL >= DISPATCH_LEVEL. This routine does not change the IRQL.
ExReleaseSpinLockExclusiveFromDpcLevel releases a spin lock that the caller acquired in a previous call to the ExAcquireSpinLockExclusiveAtDpcLevel routine.
The caller should hold the spin lock only briefly before releasing it. For more information, see Introduction to Spin Locks.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista SP1 |
| Header | wdm.h |
| IRQL | IRQL >= DISPATCH_LEVEL |