[Info-vax] Volatile, was: Re: yet another sys$qiow question

David Froble davef at tsoft-inc.com
Fri Aug 28 21:24:39 EDT 2015


JF Mezei wrote:
> On 15-08-28 18:41, "VAXman- "@SendSpamHere.ORG wrote:
> 
>> $SYNCH will put the process into LEF whether you use a valid event flag or
>> EFN$C_ENF
> 
> 
> LEF is evil :-)
> 
> It means your program can't do anything while waiting for an IO which
> may never complete.

That's what timers are for ....

> And when a program hangs in LEF, it often ends up in the ever more evil
> RWAST when you try to kill it so you can restart it, which requires a
> reboot of the universe.

Perhaps not, if things were set up to avoid RWAST ....



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