RE: FREE Op Code?

[rob@xxxxxxxxx]

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Buck,

Thank you for that clear explanation.

What happens in RPGLE?  Does it always re-resolve the call?

Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin




Buck Calabro <Buck.Calabro@commsoft.net>
Sent by: rpg400-l-admin@midrange.com
08/26/2002 05:29 PM
Please respond to rpg400-l


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        Subject:        RE: FREE Op Code?


>what do you mean when you say
>'forget it called the program
>so it will re-resolve the call'?

If I may: 'resolving' generally refers to the act of looking for a program
via the library list, converting it's address into a pointer and then
invoking it.  If you specify the program name as a literal: CALL
'BUCKPGM',
then the program is resolved the first time the CALL opcode executes. That
means that if you replace the program while the caller executes, you won't
see the new copy; the pointer will be pointing to the oddly named program
object in QRPLOBJ:

CALL 'BUCKPGM'
do some more stuff
 (compile BUCKPGM, REPLACE(*YES))
do some stuff
CALL 'BUCKPGM'

You can have RPG re-resolve the program if you use a variable for the
program name: CALL PGM.  You can also have RPG re-resolve if you FREE it:

CALL 'BUCKPGM'
do some more stuff
 (compile BUCKPGM, REPLACE(*YES))
do some stuff
FREE 'BUCKPGM'
CALL 'BUCKPGM'

Reference: RPG/400 Reference
http://publib.boulder.ibm.com/cgi-bin/bookmgr/BOOKS/QBKAQV00/11.20.8
  --buck
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