VOID InitializeSRWLock (PSRWLOCK SRWLock);

VOID AcquireSRWLockShared (PSRWLOCK SRWLock);
VOID AcquireSRWLockExclusive (PSRWLOCK SRWLock);

VOID ReleaseSRWLockShared (PSRWLOCK SRWLock);
VOID ReleaseSRWLockExclusive (PSRWLOCK SRWLock);