Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Wed, 19 Nov 2014 01:01:40 +0100

Hi Michael

All seems well now. Thanks!

Cheers
Ben

Am Dienstag, 18. November 2014, 15:12:37 schrieb Michael Davidsaver:
> On 11/18/2014 11:37 AM, Michael Davidsaver wrote:
> > ...
> > From a quick look I would guess that at least dbBkptExit(),
> > dbLockExit(), and errlogExitHandler() can cause similar problems.  So
> > I'll look at making these conditional as well.
>
> Ok, so I think I've backed out enough of the DB cleanup to prevent
> crashing due to shutdown races.
>
> I think the remaining atexit hooks for softIoc shouldn't crash.  What is
>
> done is:
> > atExit exitDatabase((nil))
>
> For a real IOC (as opposed to a unittest) only doCloseLinks() runs to
> cleanup CA_LINK.  For records with extended device support it also
> disables "I/O Intr" scans and call del_record().
>
> > atExit ca_client_exit_handler((nil))
>
> Frees a thread local variable.
>
> > atExit dbCaExit((nil))
>
> Stops the CA link worker.
>
> > atExit cacExitHandler((nil))
>
> Frees a thread local variable.
>
> > atExit twdShutdown((nil))
>
> Stops the watchdog thread.
>
> > atExit errlogExitHandler((nil))
>
> Stops the errlog thread
>
> > atExit ClockTime_Shutdown((nil))
>
> Stops the ClockTimeSync() thread.
>
>
> None of these should free any global locks so that concurrent operations
> using these locks shouldn't operate on free'd memory.

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System