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

 mutex

    Address of the mutex object whose object name is to be changed.

 name

    Object name value to copy into the mutex object.

 mbz

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