A Cython Interface to EPICS Channel Access for High-level Python Applications

Content Provider	Semantic Scholar
Author	Chrin, J. T. M.
Copyright Year	2017
Abstract	Through the capabilities of Cython (a Python-like programming language with the performance of C/C++), a Pythonic interface to an in-house C++Channel Access (CA) library, CAFE, has been developed, thereby exposing CAFE’s numerous multifaceted and user-friendly methods to Python application developers. A number of particularities of the PyCafe extension module are revealed. These include support for (i) memoryview and other data types that implement the new Python buffer protocol (allowing data to be shared without copying), (ii) native thread parallelism, and (iii) pointers to callback functions from wherein CAFE methods may be effortlessly executed in asynchronous interactions. A significant performance improvement is achieved when compared with conventional Pythonic CA libraries. The PyCafe interface has been realized within the context of high-level application development at SwissFEL, Switzerland’s X-ray Free-Electron Laser facility.
Starting Page	21
Ending Page	24
Page Count	4
File Format	PDF HTM / HTML
DOI	10.18429/JACoW-PCaPAC2016-WEUIPLCO04
Alternate Webpage(s)	https://www.dora.lib4ri.ch/psi/islandora/object/psi:24646/datastream/PDF/Chrin-2017-A_Cython_Interface_to_EPICS-(published_version).pdf
Alternate Webpage(s)	https://doi.org/10.18429/JACoW-PCaPAC2016-WEUIPLCO04
Volume Number	11
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article