Safeguard Reference Manual (G06.29+, H06.08+, J06.03+)

Table Of Contents
Event-Exit-Process Commands
Safeguard Reference Manual 520618-030
15 - 14
Interprocess Communication Messages
Table 15-2 shows the structure of the header data sent from the Safeguard subsystem
to the event-exit process. The header is always present. When the event-exit process
responds to an event request, it is expected to alter these fields in the header data:
Message_Tag
Error
Status
Subject_Data
Message_Data
Figure 15-2. Event-Exit-Process Message Buffer
Request Message
From Safeguard Subsystem
Reply Message
From Event-Exit Process
Header_Data ...
Offset to Subject_Data
Offset to Message_Data
Subject_Data ...
Message_Data ...
0
0
Header_Data ...
Offset to Message_
Response_Data
Message_Response_Data ...
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