Re: cleaning up at exit and waiting threads

[Dirk Zimoch <dirk.zimoch@psi.ch>]

On 25.09.2013 20:24, Benjamin Franksen wrote:
> Am Mittwoch, 25. September 2013, 06:50:18 schrieb Eric Norum:
> > I think that it's not a bug.   It's more a 'least common denominator'
> > issue with the assorted platforms on which EPICS runs. My approach
> > has been to add a 'pleaseTerminate' event to the device private
> > structure then place a check for this event right after the 'wait for
> > work' event in the worker thread.  Shutdown requests first set the
> > pleaseTerminate event and then the normal check-for-work event.
> I am using that approach, too, at least when I (have to) use semaphores
> directly. Whenever possible I use message queues nowadays, and I type
> the messages using a tagged union, just as I would with an algebraic
> datatype in Haskell. [...] shutdown is now just another message type:
>
> enum msgTag {
> 	...,
> 	MSG_SHUTDOWN /* normally needs no extra data */
> };
>
> I find it much easier to reason about my code if it is structured in
> this way.
Thank you Eric and Ben for your suggestions.

Dirk