Acquires ownership of an OpenVMS Galaxy lock.
    Note that this system service is supported only in an OpenVMS
    Alpha Galaxy environment.
    For more information about programming with OpenVMS Galaxy system
    services, see the HP OpenVMS Alpha Partitioning and Galaxy Guide.
    Format
      SYS$ACQUIRE_GALAXY_LOCK  handle ,timeout ,flags
    C Prototype
      int sys$acquire_galaxy_lock  (unsigned __int64 lock_handle,
                                   unsigned int timeout, unsigned int
                                   flags);
Additional Information:
explode
extract