Re: Adding to a Service Program

You have to remember that at the time this was all being designed (V2 timeframe) that the hardware was nowhere near as powerful as today - it was the old CISC boxes.

One of the primary objectives for ILE was speed. You can't get much faster at resolving a pointer than by saying "gimme the pointer in slot x".

Many other approaches were considered but the speed vs complexity trade-off was not considered worthwhile.

If this was all being designed today things might be different but hindsight is always 20-20.


Jon P.

On Sep 30, 2022, at 11:02 AM, Tom Daly via MIDRANGE-L <midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

It's always seemed to me that binder is stub of an idea that was never completed. Unlike level checks with files, for a srvpgm a third object is introduced for "level checking". I've always thought this was odd since it didn't add much. Binder would be more useful if it referred to the signature rather than the ordinal position and if the signature was generated and tied to the parameters.
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