Experimental Physics and
Industrial Control System

"Eric Boucher" <[email protected]> · Thu, 2 Dec 1999 12:06:50 -0600

> >
> > I have a main task that initialize CA (ca_task_initialize) then it spawn
> > another task to make the necessary CA connections (ca_search,
> ca_add_event).
> > So I first call ca_import and just before the second task exit, I call
> > ca_import_cancel. I was expecting the first task to be able to
> receive and
> > handle the event callbacks, however It seems that all the ca_add_event
> made
> > by the second task are cleared.
> > What sould I do to keep the events after the second task had died ?
> >
>
> I dont expect that the events would be cleared if the 2nd task calls
> ca_import_cancel()
> before it exits.
>
> How do you know that the events were cleared.
>

Well actually, the events might not have been cleared, but the
XXX_event_task created by CA was dead.
So I called taskSuspend instead of exiting the second task and everything
went fine.
The XXX_event_task was still alive.
When I called taskResume to let the second task died, the XXX_event_task
also died !

Eric.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System