ERESOURCE_THREAD 
ExGetCurrentResourceThread( 
);
ExGetCurrentResourceThread identifies the current thread for a subsequent call to ExReleaseResourceForThreadLite.
Return Value
ExGetCurrentResourceThread returns the thread ID of the current thread.
Comments
Callers of ExGetCurrentResourceThread must be running at IRQL <= DISPATCH_LEVEL.
See Also
ExIsResourceAcquiredExclusiveLite, ExIsResourceAcquiredSharedLite, ExReleaseResourceForThreadLite