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Introduction to the task-related user exit mechanism (the adapter)......249
The stub program .......................250
Returning control to the application program.............251
Task-related user exits and EDF .................252
The task-related user exit program .................252
User exit parameter lists ....................253
The schedule flag word ....................265
Register handling in the task-related user exit program .........266
Addressing-mode implications ..................267
Exit programs and the CICS storage protection facility .........267
Recursion within a task-related user exit program ...........268
Using CICS services in your task-related user exit program .......268
Work areas .........................269
Coding a program to be invoked by the CICS SPI ..........270
Coding a program to be invoked by the CICS syncpoint manager .....270
Coding a program to be invoked by the CICS task manager .......274
Coding a program to be invoked at CICS termination .........275
Using EDF with your task-related user exit program ..........278
Adapter administration......................280
What you must do before using the adapter .............280
Tracing a task-related user exit program ..............282
Chapter 3. The user exit programming interface (XPI) .........283
Overview...........................283
General form of an XPI call ....................286
Setting up the XPI environment .................290
XPI register usage ......................291
The XPI copy books .....................291
Reentrancy considerations resulting from XPI calls ..........291
Global user exit XPI examples, showing the use of storage ........292
An example showing how to build a parameter list incrementally .....297
The XPI functions .......................298
Dispatcher functions ......................300
Synchronization protocols for SUSPEND and RESUME processing ....300
The ADD_SUSPEND call....................302
The SUSPEND call ......................304
The RESUME call ......................307
The DELETE_SUSPEND call ..................308
The WAIT_MVS call .....................309
The CHANGE_PRIORITY call ..................313
Dump control functions .....................314
The SYSTEM_DUMP call ...................314
The TRANSACTION_DUMP call .................316
Enqueue domain functions ....................318
The ENQUEUE function ....................318
The DEQUEUE function ....................319
Kernel domain functions .....................320
The START_PURGE_PROTECTION function ............320
The STOP_PURGE_PROTECTION function.............320
Nesting purge protection calls ..................321
Loader functions ........................321
The DEFINE_PROGRAM call ..................321
The ACQUIRE_PROGRAM call .................325
The RELEASE_PROGRAM call .................327
The DELETE_PROGRAM call ..................328
Log manager functions .....................329
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