Experimental Physics and
Industrial Control System

"jun-ichi.odagiri--- via Tech-talk" <tech-talk at aps.anl.gov> · Sun, 28 Mar 2021 05:04:03 +0900

Dear Michael,

> This thread is an internal implementation detail of EPICS Base.
> Specifically, a CA server thread on which accept() is called
> to handle new TCP connections from CA clients.

Thanks for teaching of yours on the CA implementation. I recognized
that I had been misunderstanding on what "CA-TCP" is. "CA-TCP" is a
thread that waits for connection requests from CA clients to come
and spawns a new thread that handles communication with each of the
CA clients. "CA-TCP" is one of the "core threads". The thread newly
spawned for every TCP connection is one of the "general purpose
threads". I appreciate it if you could let me know if I am still
making a mistake in the proper use of the words.

Best regards,

J.Odagiri at KEK

----- Original Message -----
> On 3/27/21 4:13 AM, jun-ichi.odagiri--- via Tech-talk wrote:
> > Hi, all
> > 
> > In the previous mail I wrote, I called "CAS-TCP" a "general purpose 
> > thread".
> > Then, Ralph corrected it that "CAS-TCP" is a "core thread".
> > Now, I understood what "core thread" means.
> > What I do not understand is, then, what "general purpose thread" 
means.
> > Could anyone teach me what "general purpose thread" means?
> 
> This thread is an internal implementation detail of EPICS Base.
> Specifically, a CA server thread on which accept() is called
> to handle new TCP connections from CA clients.
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System