ExReleaseSpinLockExclusiveFromDpcLevel function (wdm.h)
The ExReleaseSpinLockExclusiveFromDpcLevel routine releases a spin lock that the caller acquired for exclusive access, and leaves the IRQL unchanged.
C++
void ExReleaseSpinLockExclusiveFromDpcLevel(
PEX_SPIN_LOCK SpinLock
);
SpinLock
[in, out] A pointer to the spin lock to release. The caller must own this spin lock for exclusive access.
None
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.
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista SP1 |
| Header | wdm.h |
| IRQL | IRQL >= DISPATCH_LEVEL |