Pathmaker Programming Guide

Modifying Requesters
Advanced Pathmaker Programming Topics
067868 Tandem Computers Incorporated 9–9
The generated requester checks T9154-USER-ERROR-SW after every USER-PRE-
function-key action to determine whether the action (CALL or SEND) should be
completed. You can set T9154-USER-ERROR-SW in your ?SECTION USER-PRE-
function-key code.
The DDL code for these two switches is:
01 T9154-EXIT-PROGRAM-SW PIC X VALUE "N".
88 T9154-EXIT-PROGRAM VALUE "Y".
01 T9154-USER-ERROR-SW PIC X VALUE "N".
88 T9154-USER-ERROR VALUE "Y".
Requester Linkage. The requester linkage is a structure that is passed between
requesters. The requester linkage consists of:
Request and reply headers
T9154-NAMED-EXIT
T9154-EXIT-APPLICATION-SW
T9154-PROJECT-NAME
FILLER
The request header is the first part of an IPC message sent from a requester to a
service; the reply header is the first part of an IPC message sent from a service to a
requester. For advisory replies, the reply header forms the entire message.
The T9154-NAMED-EXIT switch is used by the application to indicate whether the
application should return to a specific previous requester. The generated application
checks T9154-NAMED-EXIT after the POST-ACTION of a CALL or SEND function
key.
The T9154-EXIT-APPLICATION-SW switch is used by the application to indicate
whether the application should stop processing. The generated application checks
T9154-EXIT-APPLICATION-SWITCH after the POST-ACTION of a CALL or SEND
function key.
T9154-PROJECT-NAME contains the project’s name.
FILLER is reserved for future use by Tandem.