Argonne National Laboratory

Experimental Physics and
Industrial Control System

1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
<== Date ==> <== Thread ==>

Subject: RE: ca_flush_io and threads
From: <michael.abbott@diamond.ac.uk>
To: <dirk.zimoch@psi.ch>
Cc: tech-talk@aps.anl.gov
Date: Mon, 12 Mar 2012 10:01:37 +0000
From: Dirk Zimoch [mailto:dirk.zimoch@psi.ch]
> If you have "third party" threads that have to work with CA, e.g. call
> ca_flush_io(), it is necessary that they join the main CA context.
> Otherwise they will start their own unrelated context.
> 
> Get a context handle from the main thread with ca_current_context()
> after calling ca_context_create(). Then in your third party thread,
> call ca_attach_context() with that context handle.

Aha!  Thank you, that solves another problem I was seeing...

Didn't realise there was an associated context, but I see it now in the documentation.

-- 
This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail.
Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. 
Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message.
Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom
 





References:
ca_flush_io and threads michael.abbott
Re: ca_flush_io and threads Dirk Zimoch

Navigate by Date:
Prev: Re: ca_flush_io and threads Dirk Zimoch
Next: Fwd: Qazi Zia-ul-Haque
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
Navigate by Thread:
Prev: Re: ca_flush_io and threads Dirk Zimoch
Next: Fwd: Qazi Zia-ul-Haque
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  <20122013  2014  2015  2016  2017  2018  2019 
ANJ, 18 Nov 2013 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·