IBM SC34-6814-04 - Manual (Page 200)

UEPRSRCE
Address of an 8-character copy of the EIB resource value,
EIBRSRCE.
UEP_PC_PBTOK
Address of a 4-byte field containing the z/OS Workload Manager
(WLM) Performance Block Token. An exit program can use this
token to access information (such as the service class token,
SERVCLS) in the WLM Performance Block. To do so, it must use
the WLM EXTRACT macro, IWMMEXTR, passing the Performance
Block Token as the MONTKN input parameter. For more information
about the IWMMEXTR macro, see z/OS MVS Programming:
Workload Management Services.
An exit program must not attempt to modify the Performance Block:
if it does so, the results are unpredictable.
Return codes
UERCBYP
Program control is to ignore the request.
UERCNORM
Continue processing.
UERCPURG
Task purged during XPI call.
XPI calls
All can be used.
Although the exit permits the use of XPI GETMAIN and FREEMAIN calls,
we recommend that you use the EXEC CICS GETMAIN and FREEMAIN
commands instead.
API and SPI calls
All can be used, except for:
EXEC CICS SHUTDOWN
EXEC CICS XCTL
Exit XPCERES:
When invoked
By the EXEC interface program, before processing of a program link or
Link3270 bridge request that has been dynamically routed to this region,
where the routing region supports the “resource unavailable” condition.
Exit-specific parameters
Note: CICS ignores any changes made by the exit program to the values
of any of the exit parameters. Your exit program can set a return
code, but not change any parameters.
UEPCLPS
Address of the command parameter list.
UEPPCTOK
Address of a 4-byte token to be passed to XPCREQC.
UEPRCODE
Address of a 6-byte hexadecimal copy of EIBRCODE.
178 Customization Guide