RtlTryAcquireSRWLockExclusive - NtDoc

#ifndef _NTRTL_H
// Slim reader-writer locks, condition variables, and barriers
#if (PHNT_VERSION >= PHNT_VISTA)

// winbase:TryAcquireSRWLockExclusive
_When_(return != 0, _Acquires_exclusive_lock_(*SRWLock))
NTSYSAPI
BOOLEAN
NTAPI
RtlTryAcquireSRWLockExclusive(
    _Inout_ PRTL_SRWLOCK SRWLock
    );

#endif
#endif
View code on GitHub