Experimental Physics and
Industrial Control System

"John A. Priller" <[email protected]> · Thu, 30 Sep 2004 10:01:11 -0400

We've been looking into using the asTrapWrite functionality to log
settings (using the caPutLog extension), and I've discovered that while
logging of settings made through ca_put works fine, no logging is
performed if settings are made through ca_put_callback.
Burrowing into the base code (both 3.13.5 which we currently use on our
IOCs and 3.14.6 which we plan to upgrade to), I've found that
asTrapWriteBefore and asTrapWriteAfter are called in
src/rsrv/camessage.c in the code for write_action, but not in the code
for write_notify_action.
I could probably kludge in calls to the asTrapWrite functions in the
write_notify_action function (or the various support functions for write
notification), but I'm wondering if there's any "gotchas" I'm not aware
of that would make that a bad idea, which might explain why asTrapWrite
functionality is not now implemented for write notification.
Thanks for any light anyone can shed,
JP
--
John A. Priller            | Phone : (517) 333-6375
MSU Cyclotron Laboratory   | Fax   : (517) 324-8126
South Shaw Lane            | Email : [email protected]
East Lansing, MI 48824     | Web   : http://www.nscl.msu.edu/~priller/

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System