Guardian Application Conversion Guide

New Process Identifiers

Conversion Concepts

2–12 096047 Tandem Computers Incorporated

same sequence number. When the original primary process restarts, it too has the

same sequence number. Only if both processes in the process pair stop is the

process pair restarted with a new sequence number.

and

are optional file-name qualifiers. Each qualifier can have up to eight characters.

The first character of

must be a pound sign (#). This syntax is identical to the

syntax of C-series file-name qualifiers.

Process File Names for Unnamed Processes

A D-series process file name can identify an unnamed process. Valid examples are:

$:2:850:5237743650 ! CPU, PIN and seq num

\NY.$:6:200:2876540012 ! Node, CPU, PIN, and seq num

\PARIS.$:6:130:3547234520 ! Node, CPU, PIN, and seq num

The format of a D-series process file name for an unnamed process is:

[

node-name.

]$:

cpu

sequence-number

node-name

is a variable-length string specifying the node (system) name. The name consists

of a backslash followed by one to seven letters or digits; the first character after the

backslash must be a letter. This syntax is identical to the syntax for a system name

in a C-series external-format process file name.

cpu

is the CPU number, which is one or two digits ranging from 0 through 15. A colon

separates the dollar sign from

cpu

is the PIN value, which is one to five digits ranging from 0 to the maximum value

allowed for the CPU. A colon separates

cpu

from

sequence-number

is a system-assigned sequence number with a maximum of 13 digits. Any leading

zeros are suppressed. A colon separates

from

sequence-number

The sequence number is unique for each process and serves the same purpose as

the process creation timestamp, which is used in the C-series timestamp form of

the process ID. (However, a sequence number is not a timestamp.)

The number identifies a process over its lifetime and therefore can detect incorrect

references to the process. For example, an unnamed process, $:1:650:1234567890,

terminates. The system creates a new process, $:1:650:9876543210, with the same