NDIS_RELEASE_MUTEX - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ndis.h
void NDIS_RELEASE_MUTEX(
_M_
);
View the official Windows Driver Kit DDI referenceNo description available.
The NDIS_RELEASE_MUTEX macro releases the specified mutex object.
_M_A pointer to an initialized NDIS_MUTEX-type mutex object. The caller initialized the mutex object in a prior call to the NDIS_INIT_MUTEX macro. NDIS_MUTEX is a wrapper for the KMUTEX type.
NDIS_RELEASE_MUTEX returns a LONG value. If the return value is zero, the mutex object was released and is in the signaled state. If NDIS_RELEASE_MUTEX returns a nonzero value, the mutex is not in the signaled state.
NDIS network drivers should use the NDIS_RELEASE_MUTEX macro to release a mutex.
Only the thread that is currently holding the mutex object can release it. Otherwise, a bugcheck occurs. A bugcheck also occurs if a driver attempts to release a mutex object that is in the signaled state.
To acquire the mutex, call the NDIS_WAIT_FOR_MUTEX macro. If a mutex is acquired recursively, the holding thread must call NDIS_RELEASE_MUTEX the same number of times that it acquired the mutex to set it back to the signaled state.
NDIS_RELEASE_MUTEX is an NDIS wrapper for the KeReleaseMutex routine.