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"Liberating the Smalltalk lurking in C and Unix" by Stephen Kell

"Liberating the Smalltalk lurking in C and Unix" by Stephen Kell

Strange Loop Conference
2 HN recommenders · discussed 2016–2023
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About this video

Stephen Kell's Strange Loop talk argues that C and Unix already contain Smalltalk-like dynamism and introspection that can be exposed. He presents his liballocs research on bridging dynamic and compiled languages.

Why it appears in the archive

HN commenters recommend it in Smalltalk and Unix threads as a demonstration of runtime dynamism hiding in native binaries and shared libraries.

AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.

From the Hacker News discussion

ElijahLynn · 2016-02 · rec

Lately I have been very interested in putting faces and voices to words. After reading this article, which was over my head but I got a little out of it. I ended up reading Stephen Kell's homepage, which is crazy intense as far as academics go. He had a link to a video of his and I appreciated the quality and now have a face and voice to attach to the article, therefore will probably remember it better. tldr; Here is a video of the same guy who wrote this article ==> [VIDEO] p.s. 5 minutes in and the talk is pretty good.

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johndoe0815 · 2020-07 · rec

Thanks for the link - that looks really interesting! I will have to give it a try to make some informed statement, but I think it's definitely worth looking at. Some parts of Ruby also seem to be inspired by Smalltalk, so that might be a good fit. There's also a Smalltalk-80 VM by Rochus Keller based on the Lua JIT compiler [8] (and a very nice Qt-based Smalltalk browser), that might also go in the same direction. In general, I think there are two major interesting aspects in systems like the Ruby system browser and Smalltalk. On the one hand one can discover the system - you can dig into the implementation without using a disassembler or reverse engineering - and on the other hand it is possible to change the system behavior at runtime (though this is, of course, dangerous). I would love to see at least the discoverability aspect to be more pervasive in standard operating systems. There are already partial approaches to this, such as DTrace/systemtap and the proc filesystem, but having discoverability as a first class concept - which might fit well to Plan 9's (and to some extent Unix's) "everything is a file" approach - would be nice. The ability to change the system at runtime is also fascinating. I already mentioned the research of Stephen Kell in another comment [1] and there's a great video of one of his talks [2] in which he shows his approach to dynamically alter a program's behavior on Unix using shared library mechanisms (you can find the code on github [3]). I work

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johndoe0815 · 2023-01 · rec

I can recommend Stephen Kell's publications on this topic, e.g. "Unix, Plan 9 and the Lurking Smalltalk": [LINK] Video: [VIDEO] More on Stephen's research can be found at [LINK]

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mpweiher · 2020-06 · reference

> Smalltalk can be described concisely as a graphical UNIX Or Unix as a closet Smalltalk... "Liberating the Smalltalk lurking in C and Unix" by Stephen Kell [VIDEO]

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carapace · 2023-03 · reference

"Liberating the Smalltalk lurking in C and Unix" by Stephen Kell, Strange Loop Conference, [VIDEO] > This talk introduces liballocs, an infrastructure which exposes the dynamism hiding in the arcane linking and debugging infrastructure of a Unix process, along with a small extension to C toolchains that enables fast dynamic access to data created by statically compiled code. Together they can be said to unleash a "hidden Smalltalk" inside the C and Unix model of programs and processes. Come prepared for a journey that takes your perceptions of the boundaries between dynamic and static languages and turns them on its head.

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