Experimental Physics and
Industrial Control System

Jameson Graef Rollins <[email protected]> · Wed, 13 May 2015 10:52:58 -0700

On Tue, May 12 2015, "Wang Xiaoqiang (PSI)" <[email protected]> wrote:
> Maybe a minimal example representing the program logic could help the debug.

Hi, Xiaoqiang.  Unfortunately that's quite difficult to provide, since
this program is fairly complex and I'm not sure how to make a "minimal"
representation that would provide anything useful.  Given that I still
haven't been able to replicate the bug in a controlled way, I would have
no way of knowing the the "minimal" application includes whatever is
currently triggering the issue.

The cas is executed in a threading.Thread object (see below).  Do you
see anything obviously problematic in how the server/driver are being
invoked?

jamie.

class CADriver(pcaspy.Driver):
    def __init__(self, ...):
        super(CADriver, self).__init__()
        ...
    ...

class CAServer(threading.Thread):
    def __init__(self, ...):
        super(CAServer, self).__init__()
        ...
        self._ready_event = threading.Event()
        self._server = pcaspy.SimpleServer()
        ...
        self._driver = CADriver(...)
        ...
    ...
    def run(self):
        self._ready_event.set()
        while self._running:
            self._server.process(0.1)

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System