Experimental Physics and
Industrial Control System

Am 29.04.19 um 17:32 schrieb Ralph Lange via Tech-talk:
> On Mon, 29 Apr 2019 at 17:02, Johnson, Andrew N. via Tech-talk <
> [email protected]> wrote:
> 
>>
>> We might be able to add a routine to iocsh that replicates the VxWorks
>> shellScriptAbort() routine; calling that aborts the current VxWorks target
>> shell and stops reading the startup script. I haven't studied how it works
>> on VxWorks, but my guess is that on entry the shell calls setjmp(), and the
>> abort routine calls longjmp() to return to that context again and clean up.
>> I could see that as a possible cause of lost resources if we're not careful
>> though.
>>
> 
> Sounds dangerous...
> I would rather have a new API for the shell commands (allowing return
> codes) and a glue layer for the existing (old API) commands that returns 0
> in the new API.

I should perhaps mention here that when you embed Lua into a program,
setjmp/longjmp is /the/ standard mechanism for handling errors.

Cheers
Ben

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References:

Stopping IOC boot on failure to load database Paduan Donadio, Marcio via Tech-talk

Re: Stopping IOC boot on failure to load database Benjamin Franksen via Tech-talk

Re: Stopping IOC boot on failure to load database Ralph Lange via Tech-talk

Re: Stopping IOC boot on failure to load database Johnson, Andrew N. via Tech-talk

Re: Stopping IOC boot on failure to load database Ralph Lange via Tech-talk

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