Experimental Physics and
Industrial Control System

Hi Xiaoqiang,
Do you have a pcaspy example that I can run to reproduce this?

I'm running pcaspy 0.6.2 currently, but could also build from a github branch if available.

Thanks,
- Bruce


On 11/10/2016 08:59 AM, Wang Xiaoqiang (PSI) wrote:

Hi,

I am testing the support of dynamic array in the recent base 3.14.12.6-rc1.
Using a normal pcaspy application, which updates ~15 Hz. It repeatedly gets into a deadlock state.

The analysis has been put up here
https://github.com/paulscherrerinstitute/pcaspy/issues/29

The solution could be reversing the lock order during casEventSys::process. But it does not seem to be easy,
because the chain of calls involved.

Best
Xiaoqiang

--
Bruce Hill
Member Technical Staff
SLAC National Accelerator Lab
2575 Sand Hill Road M/S 10
Menlo Park, CA  94025

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RE: deadlock in pcas 3.14.12.6-rc1 Wang Xiaoqiang (PSI)

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deadlock in pcas 3.14.12.6-rc1 Wang Xiaoqiang (PSI)

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