#ifndef _NTRTL_H

// winbase:AcquireSRWLockExclusive
/**
 * The RtlAcquireSRWLockExclusive routine acquires a slim reader/writer (SRW) lock in exclusive mode.
 *
 * \param SRWLock A pointer to the SRW lock.
 * \remarks Use a stable caller-owned lock and release in the same acquired mode. Treat SRW locks as nonrecursive and provide any upgrade protocol externally. A successful try-acquire owns the lock; FALSE does not. The routines are not kernel-object handle operations.
 */
_Acquires_exclusive_lock_(*SRWLock)
NTSYSAPI
VOID
NTAPI
RtlAcquireSRWLockExclusive(
    _Inout_ PRTL_SRWLOCK SRWLock
    );

#endif
View code on GitHub