On 2016-12-13 10:35, Sven Van Caekenberghe wrote:

Hi Michel,

...

On 13 Dec 2016, at 10:25, Michel Onoff <michel.onoff@web.de> wrote:

Hi,

is there a way to register arbitrary code to be run at image start-up and shutdown?

Thanks Michel

Sure, that is possible and common.

Have a look at the 'system startup' protocol of TBehavior (as implemented by classes) and look for the startUp & shutDownmessages.

There is also the 'snapshot and quit' protocol of SmalltalkImage with messages like addDeferredStartupAction: and addToStartUpList:

In newer Pharo images (5+ I think), SessionManager is your friend, a cleaner rewrite.

Sven

Thanks Sven, I'll take a look.

Ben can you open a ticket and we will ask guille and pablo to write a class comment. Stef On Tue, Dec 13, 2016 at 11:16 AM, Ben Coman <btc@openinworld.com> wrote:

Look at class refs to SessionManager. I was going to refer you to its class comment but its incomplete. Could someone knowledgeable update the class comment to define what support methods are required and the preferred way to register. I'm a bit confused. I'm familiar with #startUp/#shutDown from Delay, but its not obvious from the list of senders which invokes these.

I do see TestSessionHandler defines #startup: and the only sender is #runStartup: But I see it also defines #startupHandler: whose only senders (one step removed) are tests, so how does this method fit into the architecture?

cheers -ben

On Tue, Dec 13, 2016 at 5:25 PM, Michel Onoff <michel.onoff@web.de> wrote:

...

Hi,

is there a way to register arbitrary code to be run at image start-up and shutdown?

Thanks Michel