Guardian Application Conversion Guide

Identifying Processes
System Compatibility
096047 Tandem Computers Incorporated C–3
Identifying Processes The D-series operating system uses D-series process file names and process handles to
identify processes. For compatibility with C-series operating systems, the D-series
operating system also supports C-series process file names and process IDs. The
following paragraphs describe the use of C-series and D-series process identifiers.
Note that the ability to identify a process does not imply that you can open it and
communicate with it. For rules about which processes you can and cannot open, see
“Allowing Opens by High-PIN Requesters” and “Communicating With a Named
High-PIN Process” later in this appendix.
Using C-Series
Process Identifiers
When you are identifying processes in a network, a C-series process file name or
process ID has certain restrictions. You cannot identify a high-PIN process on either a
local or remote D-series system. You can identify a local or remote low-PIN process on
a C-series system or D-series system using:
The timestamp form of an unnamed C-series process file name or process ID, as
long as the PIN is less than 255
The network named form of a C-series process file name or process ID, if the
process name has fewer than five characters after the dollar sign
Figure C-3 shows the use of C-series process file names and process IDs to identify
processes in a network.
Figure C-3. Identifying Processes Using C-Series Process Identifiers
Low PINs
(0-255)
System \CENT
(C-Series System)
Low PINs
(0-254)
System \WEST
(D-Series System)
System \EAST
(D-Series System)
Low PINs
(0-254)
Processes that can be identified from
system \WEST using the network and
timestamp forms of process file names
and process IDs.
Processes that can be identified from
system \WEST using either of:
-- the local form of process file names
and process IDs
-- the network and timestamp forms of
process file names and process IDs
Processes that cannot be identified
using C-series process identifiers.
High PINs
(≥ 256)
High PINs
(≥ 256)