/sys$common/syshlp/helplib.hlb POSIX Threads, TIS routines, tis_once  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Calls a one-time initialization routine that can be executed by
    only one thread, once.

  Additional Information (explode) :

• C Binding
• Arguments
• Description
• Return Values