Exec initialization and termination exits

You can provide exits for exec initialization and termination. The exec initialization exit is invoked after the variable pool for a REXX exec has been initialized, but before the language processor processes the first instruction in the exec. The exec termination exit is invoked after a REXX exec has completed, but before the variable pool for the exec has been terminated.

The exec initialization and termination exits do not have fixed names. You name the exits yourself and define the names in the following fields in the module name table:

EXECINIT - for the exec initialization exit
EXECTERM - for the exec termination exit

The two exits are used on a language processor environment basis. You can provide an exec initialization and exec termination exit in any type of environment (integrated and not integrated into TSO/E). You define the exit names in the module name table by:

Providing your own parameters module that replaces the default module, or
Calling IRXINIT to initialize a language processor environment and passing the module name table on the call.

Changing the default values for initializing an environment describes how to provide your own parameters module. Initialization and termination routines describes the IRXINIT routine.