ExReleaseSpinLockSharedFromDpcLevel routine
The ExReleaseSpinLockSharedFromDpcLevel routine releases a spin lock that the caller acquired for shared access, and leaves the IRQL unchanged.
Syntax
VOID ExReleaseSpinLockSharedFromDpcLevel(
_Inout_ PEX_SPIN_LOCK SpinLock
);
Parameters
- SpinLock [in, out]
A pointer to the spin lock to release. The caller must own this spin lock for shared 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.
ExReleaseSpinLockSharedFromDpcLevel releases a spin lock that the caller acquired in a previous call to the ExAcquireSpinLockSharedAtDpcLevel routine.
The caller should hold the spin lock only briefly before releasing it. For more information, see Introduction to Spin Locks.
Requirements
Target platform |
Universal |
Version |
Available starting with Windows Vista with SP1. |
Header |
Wdm.h |
Library |
Ntoskrnl.lib |
IRQL |
>= DISPATCH_LEVEL (See Remarks.) |
See also
ExAcquireSpinLockSharedAtDpcLevel