Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Fri, 20 May 2011 14:05:34 -0600

John,

Sadly, no, I don?t have a simple multithreaded client source code to send
you. The manual does cover this topic, but it doesn?t include an example. I
should write one and include it in the application templates - or in the
manual. 

Nevertheless, the ca details are fairly easy. The hardest part of writing
multithreaded client will be protecting your data structures from
asynchronous callbacks.

To write a multithread ca client code one only needs to create a preemptive
callback ca context, spawn a thread, and then attach to the previously
created ca context with the new thread.

Jeff
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> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of John Dobbins
> Sent: Wednesday, May 18, 2011 2:08 PM
> To: EPICS Tech-Talk
> Subject: multi-threaded client example
> 
> I would like to create a c++ client which is capable of handling
> monitors as well as doing other things, e.g. write to a PV in response
> to some event. To this end I am looking for example code that covers the
> essential aspects of creating a multi-threaded client. Can someone
> recommend a basic example to look at?
> 
> John Dobbins
> 
> Cornell Laboratory for Accelerator-based Sciences and Education
> Cornell University

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System