Re: Creating a service program

[Jim Langston <jlangston@xxxxxxxxxxxxxxxx>]

Curiosity question on this.  Okay, now you have 2 signatures in your binder 
langauge, one
*PRV for the old calls, one *CURRENT for the new calls.  What do you do when 
you add
a few more procedures to your directory?  You can't have 2 *PRV can you?

Regards,

Jim Langston

Mike Silvers wrote:

> You must specify the current signature and the old signature in the binder
> language.  The binder language is saved in a source file and is of the type
> MOD.  When the service program is compiled, you must then specify the
> location of the binder language.  The binder language would state the
> following to include the old signature:
>
> STRPGMEXP PGMLVL(*CURRENT)
> EXPORT  SYMBOL(Proc1)
> EXPORT  SYMBOL(Proc2)
> EXPORT  SYMBOL(Proc3)
> EXPORT  SYMBOL(Proc4)
> ENDPGMEXP
>
> STRPGMEXP  PGMLVL(*PRV)
> EXPORT  SYMBOL(Proc1)
> EXPORT  SYMBOL(Proc2)
> EXPORT  SYMBOL(Proc3)
> ENDPGMEXP
>
> What this is saying is that the current signature includes all 4 procedures.
> It saves an old signature with the first three procedures.  The older
> programs will use the older signature with 3 procedures.  Any newer programs
> that are compiled will use the new signature with 4 procedures.  Any program
> using the older signature can not reference the new 4th procedure unless it
> is compiled again and has a prototype defining the new procedure.  If a
> program is compiled again, it will always use the current signature, not any
> of the old signatures.
>
> Mike

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