Clojure with panama
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This document summarizes a presentation about interoperating with C libraries from Clojure. It discusses using the SDL library via Clojure, creating C bindings, and approaches to loading libraries and accessing C structures. It also covers foreign function interfaces like JNI, JNR, JNA and Panama for Java/C interop and existing SDL bindings for languages like Java, Common Lisp and Clojure.
Clojure with panama
- 1. Interop with C in Clojure 2 with panama netpyoung@gmail.com September 2019 #1
- 2. Do you have any Questions? - for keep time, to save each others time - If you have questions, during presentation. - message on slack #clojure-sg with page #numer. - https://clojurians.slack.com/messages/clojure-sg - ex) #10 - what is blabla? - I will answer after presentation. - so, I can polish this slide from your feedbacks. #2
- 3. ● EunPyoung Kim ● KOR -> JPN -> SGP ● Game Client Programmer. (since 2012.04 ~ ) ● I like Lisp (not only clojure) ● I’m Lazy ○ because of that I like automatation (code generate also) ○ I like macro (but don't abuse) ● I like Emacs ○ Cursive ○ (Neo)Vim….? ● https://netpyoung.github.io/ #3
- 4. What I want & What I did. ● I want to trying use SDL library via clojure ● I made some examples for c binding. ● I want to share approach and experience. #4
- 5. Problem? ● How to load library. ● Writing wrapper function. ● C structure layout for pointer access. #5
- 6. Java & C Binding ● performance check ○ https://github.com/yulewei/java-ffi-demo ● JNI > JNR > JNA (Direct Mapping) > JNA (Interface Mapping) name date JNI 1997.02 JNA 2007.03 JNR 2013.02 JavaCPP 2015.07 Panama EAB #6
- 7. Panama ● https://openjdk.java.net/projects/panama/ ● Panama: A Foreign Policy for Java by Maurizio Cimadamore ● Going Meta to Valhalla & Panama with John Rose #7
- 9. SDL ● Simple DirectMedia Layer ● cross-platform development library. ● designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D #9
- 10. SDL Language Bindings ● https://www.libsdl.org/languages.php ● Ada ● C# ● D ● Go ● Lua ● OCaml ● Pascal ● Python ● Rust #10
- 11. Java SDL Binding? ● https://github.com/javasdl/libjavasdl ● using JNA #11
- 12. Common Lisp SDL Binding? #12
- 14. Demo Clojure binding for SDL2 #14
- 15. Questions ex) #10 - what is blabla? #15
- 16. Thank you