Re: help with binding directories

["Buck" <buck.calabro@xxxxxxxxxxxx>]

> Will someone tell me what
> to do so that I can update the
> service programs in the binding
> directory without having to recompile
> every program that uses them?

Binder source is the right place to be.  I use my own signatures rather than
let the compiler generate them.  It's easier to read in DSPPGM!

So, I might write a sockets program (Thanks, Scott!) that makes these
procedures public:
STRPGMEXP PGMLVL(*CURRENT) SIGNATURE(' 1.00 11 Sep 00')
  EXPORT SYMBOL("SOCKOPEN")
  EXPORT SYMBOL("SOCKREAD")
  EXPORT SYMBOL("SOCKWRITE")
  EXPORT SYMBOL("SOCKCLOSE")
  EXPORT SYMBOL("RETURNH_ERRNO")
  EXPORT SYMBOL("RETURN_ERRNO")
ENDPGMEXP

Then I create the service program:
CRTSRVPGM SRVPGM(SOCKETSVC)
          EXPORT(*SRCFILE)
          SRCFILE(QSRVSRC)
          SRCMBR(*SRVPGM)

Now, the service program has an embedded record of the signature.

Then, I use it a while and realise I might be communicating to a Unix
system, and need translation from ASCII to EBCDIC.  I add a pair of new
procedures and place them at the end:
STRPGMEXP PGMLVL(*CURRENT) SIGNATURE(' 2.00 01 Jun 01')
  EXPORT SYMBOL("SOCKOPEN")
  EXPORT SYMBOL("SOCKREAD")
  EXPORT SYMBOL("SOCKWRITE")
  EXPORT SYMBOL("SOCKCLOSE")
  EXPORT SYMBOL("RETURNH_ERRNO")
  EXPORT SYMBOL("RETURN_ERRNO")
  EXPORT SYMBOL("A2E")
  EXPORT SYMBOL("E2A")
ENDPGMEXP

Then, I put these lines in the binder source ABOVE the earlier lines and
change the *CURRENT to *PRV:
STRPGMEXP PGMLVL(*CURRENT) SIGNATURE(' 2.00 01 Jun 01')
  EXPORT SYMBOL("SOCKOPEN")
  EXPORT SYMBOL("SOCKREAD")
  EXPORT SYMBOL("SOCKWRITE")
  EXPORT SYMBOL("SOCKCLOSE")
  EXPORT SYMBOL("RETURNH_ERRNO")
  EXPORT SYMBOL("RETURN_ERRNO")
  EXPORT SYMBOL("A2E")
  EXPORT SYMBOL("E2A")
ENDPGMEXP
STRPGMEXP PGMLVL(*PRV) SIGNATURE(' 1.00 11 Sep 00')
  EXPORT SYMBOL("SOCKOPEN")
  EXPORT SYMBOL("SOCKREAD")
  EXPORT SYMBOL("SOCKWRITE")
  EXPORT SYMBOL("SOCKCLOSE")
  EXPORT SYMBOL("RETURNH_ERRNO")
  EXPORT SYMBOL("RETURN_ERRNO")
ENDPGMEXP

When the service program is created, I use
CRTSRVPGM SRVPGM(SOCKETSVC)
          EXPORT(*SRCFILE)
          SRCFILE(QSRVSRC)
          SRCMBR(*SRVPGM)

And now, the service program will have a record of the earlier signature
with 6 procedures as well as the new signature with 8.

At run time, the programs using this service program will validate their
signature (created during bind time) against all of the signatures stored in
the service program.  Older programs will have the older signature, and will
match.  My brand new program, when compiled and bound, will store the
*CURRENT signature and of course will also match.

I hope this helped some.
  --buck