ExReleaseRundownProtection function (wdm.h)

The ExReleaseRundownProtection routine releases run-down protection that the caller previously acquired by calling the ExAcquireRundownProtection routine.

Syntax

void ExReleaseRundownProtection(
  [in, out] PEX_RUNDOWN_REF RunRef
);

Parameters

[in, out] RunRef

A pointer to an EX_RUNDOWN_REF structure that was initialized by a previous call to the ExInitializeRundownProtection routine. The run-down protection routines use this structure to track the run-down status of the associated shared object. This structure is opaque to drivers.

Return value

None

Remarks

A driver that calls ExAcquireRundownProtection to acquire run-time protection for an object access is responsible for calling ExReleaseRundownProtection to release the run-time protection when the access is finished.

As long as the run-down block itself is nonpaged, this function can be called at DISPATCH_LEVEL.

For more information, see Run-Down Protection.

Requirements

See also

EX_RUNDOWN_REF

ExAcquireRundownProtection

ExInitializeRundownProtection