VMS Help DCE_THREADS, Thread Intro, Non Portable Extensions, Thread Execution Routines  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   pthread_delay_np          Causes a thread to delay execution.

   pthread_get_expiration_np
                             Obtains a value representing a desired
                             expiration time.

   pthread_getsequence_np    Obtains the thread sequence number.