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  3. June 2017

Re: What's the proper way to "reraise" in a CLP?

On 6/15/2017 6:08 PM, Don Brown wrote:
From following this thread I had never had cause to investigate message
key values as I generally used next or previous but it would appear from
you sample program that message keys are binary sequential values.

Is that correct ?

It has been this way since S/38 days but I have never seen it
documented; that is, that the OS /guarantees/ this sequential behaviour.

The point of using message keys in this way is that you know how far
back to go before you stop looking. The SNDMSG sets a sort of
'checkpoint' that says 'The process I am interested in begins here so
don't look for messages before this point.'


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