| Parameter | Description | 
|---|---|
| safety | The AtomicSafetyHandlereturned when invoking the Create method. | 
| sentinel | The DisposeSentinelto clear. | 
Releases the AtomicSafetyHandle and clears the DisposeSentinel.
If the AtomicSafetyHandle can't be released, which usually happens either because a job is accessing the data or because the handle 
has already been released, an exception is thrown.