Experimental Physics and
Industrial Control System

Hi,

 

I am hoping there’s an AreaDetector plugin maven here…

I have written a small AD plugin intended to convert our raw camera images into a temperature heatmap, based on a calibrated gain, emissivity and exposure time. To test it, I set up a SimDetector in “peak” mode. I connect my plugin to this simDetector image. I can successfully capture and convert 3 frames. On the fourth frame, my test dies with the following error. Are there any common pitfalls that might cause this?

 

NDArray.uniqueId=1

Do temperature conversion start

Took 0.0937809 s

NDArray.uniqueId=2

Do temperature conversion start

Took 0.0655851 s

NDArray.uniqueId=3

Do temperature conversion start

Took 0.0642867 s

NDArray.uniqueId=4

NDArrayPool:reserve ERROR, reference count = 0, should be >= 1, pArray=0x7f453c001d80

Thread SimDetTask (0x5621bbbb0c80) can't proceed, suspending.

Dumping a stack trace of thread 'SimDetTask':

[    0x7f45538ffab3]: /lib/x86_64-linux-gnu/libCom.so.3.15.9(epicsStackTrace+0x73)

[    0x7f45538f0216]: /lib/x86_64-linux-gnu/libCom.so.3.15.9(cantProceed+0xc6)

[    0x7f4553197b08]: /lib/x86_64-linux-gnu/libADBase.so.3.11(_ZN11NDArrayPool7reserveEP7NDArray+0x78)

[    0x7f455305db37]: /lib/x86_64-linux-gnu/libNDPlugin.so.3.11(_ZN14NDPluginDriver21beginProcessCallbacksEP7NDArray+0x367)

[    0x7f455375df1e]: /home/daykin/git/areadetector-temperature/lib/linux-x86_64/libNDPluginTemperature.so(_ZN19NDPluginTemperature16processCallbacksEP7NDArray+0xae)

[    0x7f455305dd53]: /lib/x86_64-linux-gnu/libNDPlugin.so.3.11(_ZN14NDPluginDriver14driverCallbackEP8asynUserPv+0x1d3)

[    0x7f4553851155]: /lib/x86_64-linux-gnu/libasyn.so.4.38(_ZN14asynPortDriver25doCallbacksGenericPointerEPvii+0x1f5)

[    0x7f4553809974]: /usr/lib/epics/lib/linux-x86_64/libsimDetector.so(_ZN11simDetector7simTaskEv+0x4e4)

[    0x7f45538fa0bb]: /lib/x86_64-linux-gnu/libCom.so.3.15.9(epicsSnprintf+0x7bb)

[    0x7f4553387ea7]: /lib/x86_64-linux-gnu/libpthread.so.0(start_thread+0xd7)

[    0x7f455349edef]: /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)

 

Evan Daykin Controls Engineer Facility for Rare Isotope Beams Michigan State University 640 South Shaw Lane East Lansing, MI 48824, USA Tel. 517-908-7678 Email: daykin at frib.msu.edu