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  1.  Home
  2. RPG400-L
  3. July 2005

EXTPGM and performance

IIRC, back in the bad old days there were performance implications on a
CALL depending on whether I used a literal ('PGMA') or a variable name
on the CALL instruction.  With a literal, I seem to remember that the
operating system only resolved the pointer to the program the first
time, while with a variable it was resolved every time.

 

Is this the same with the EXTPGM keyword on a prototype?  That is, if I
key in a literal in the EXTPGM keyword, is there a performance advantage
as opposed to using a variable name?

 

Joe

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