IBM AS/400 manual Binding Modules into a Program

Binding Modules into a Program

Binding Modules into a	Program
Binding	is	the	process of		creating	a runnable ILE program by combini
more	modules and optional service programs, and resolving symbols passed
between them.			The	system	code that	does this combining and resolving
binder	on	the	AS/400	system.

As part of the binding process, a procedure must be identified as

dure, programor entry procedure . When a program is called, the program ent procedure receives the parameters from the command line and is given control for the program. The user's code associated with the progra dure is the user entry procedure.

If an	ILE RPG module contains a main			procedure,	it implicitly also co
program	entry	procedure.	Therefore,	any ILE RPG	module may be speci
entry	module	as long as	it is not a	NOMAIN module.

Figure 40 gives an idea of the internal structure of a program obje program object TRPT, which was created by binding the two modules TR and TRANSSVC. TRANSRPT is the entry module.

*PGM ( TRPT)

TRANSRPT Module

Program Entry

Procedure

Main Procedure

TRANSSVC Module

Main Source Section

Trans_Inc

Prod_Name

Figure 40. Structure of Program TRPT

Within a bound object, procedures can interrelate using static proce These bound calls are faster than external calls. Therefore, an appl sisting of a single bound program with many bound calls should perform a similar application consisting of separate programs with many externa cation calls.

Chapter 7. Creating a Program with the CRTRPGMOD and CRTPGM Commands81