VMS Help POSIX Threads, PTHREAD routines, pthread_rwlock_setname_np, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 rwlock

    Address of the read-write lock object whose object name is to be
    changed.

 name

    Object name value to copy into the read-write lock object.

 mbz

    Reserved for future use. The value must be zero (0).