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Hung by a thread

https://campedersen.com/rayon-mutex-deadlock
5•ecto•2h ago

Comments

knorker•22m ago
That auto flip back and forth between before and after is the most annoying thing I've seen since the blink tag was removed.
atrooo•12m ago
yeah I would like to read the code before it switches but nope
n_u•19m ago
The last photo appears to show the view out the author's office in Fort Mason. Didn't know they had offices there, that's quite a nice view of the Bay.
throwaway173738•15m ago
This kind of stuff is why devs doing safety critical work often painfully reinvent the wheel. Even if you’ve personally read the code yourself and think you understand it, there’s always some latent defect that arises from someone else’s bad assumptions.
01HNNWZ0MV43FF•12m ago
Yeah. Actually, as I read it, I'm not sure if the robot is running WebRTC or not (In my comment I assumed it was)

But yeah it would be much more predictable for everyone if the robot didn't use WebRTC or the fancy logging library, and there was a WebRTC shim on the laptop to get the visuals into a browser.

The longer I think about that 10 ms control loop, the more I hope they aren't running any WebRTC thing on the same hardware cores as the control loop.

01HNNWZ0MV43FF•15m ago
Oof lol.

Sometimes I yearn for the Haskell or Idris style of programming where a dependency can do nothing harmful or stupid without me passing in permission.

Then I think about having to pass in thread handles and file handles to logging libraries. I don't know. It would be a cool option. There is probably a hack for `tracing` that would let me manage the logging thread myself.

Software is so complex these days. The funny solution of doing static-allocated C with no threads and no logging isn't gonna work for me. You aren't going to have WebRTC in from-scratch C.

MobileVet•10m ago
Man I miss embedded robotics work. So fun to write a control loop / algorithm and then see it play out in the real world. <robot crashes into wall> Whoops, guess we better review that routine...
Negitivefrags•9m ago
It's quite interesting to me the way that different "programming cultures" exist around debuggers.

If you grew up doing windows C++ development, looking at things in a debugger is your first step. You only resort to printing values if you can't immediately see what happened in the debugger.

A lot of other envioronment/language cultures are the opposite. Obviously both have their place, but I do feel like more people should use the debugger as the first step instead of the last.

_dain_•6m ago
>Not crashed, not erroring, just... vibing. Sitting there. Motors off. Completely checked out.

>Doesn't crash. Doesn't throw. Just ghosts me.

>Same freeze. Same spot. Iteration 1,615. Every single time.

>It's not slow. It's not starved. It's blocked.

>The Reveal

>That's it. That's the fix. 8 hours of debugging. 2 lines changed. Hold the lock for less time. Tale as old as time.

>The Takeaways

>[the way the bulletpoint list is formatted]

pure AI slop. i'm appalled that this obvious garbage is on the frontpage. you even got the title from GPT, didn't you?

Ask HN: Would you trust an AI coworker with shell access to your infrastructure?

1•doctornemesis•4m ago•0 comments

What Will People Think?

https://domofutu.substack.com/p/what-will-people-think
1•wjb3•5m ago•0 comments

Show HN: Kanata-switcher – per-application hotkeys for all Linux DEs

https://github.com/7mind/kanata-switcher
2•neko-kai•6m ago•0 comments

Ask HN: Why does the number of datasets on data.gov vary so much?

1•akudha•6m ago•0 comments

Rethinking Helix

https://asta.boserup.eu/forest/rethinking-helix/
1•birdculture•10m ago•0 comments

An unlike source of crypto innovation: Afghanistan

https://www.nytimes.com/2026/01/24/world/asia/crypto-innovation-afghanistan.html
1•japaget•11m ago•0 comments

Grokking

https://en.wikipedia.org/wiki/Grokking_(machine_learning)
1•tarbyqualia•13m ago•0 comments

Show HN: Witral: Self-hosted framework to ingest WhatsApp into Markdown/Obsidian

https://github.com/kirlts/witral
1•kirlts•15m ago•1 comments

Ask HN: Have we confused Efficiency with "100% Utilization"?

2•nickevante•15m ago•0 comments

Local AI Manifesto

https://github.com/Tennisee-data/acf/blob/main/MANIFESTO.md
2•zen4ttitude•16m ago•1 comments

The western US is in a snow drought, and storms have been making it worse

https://theconversation.com/the-western-us-is-in-a-snow-drought-and-storms-have-been-making-it-wo...
1•PaulHoule•17m ago•0 comments

Teenage Engineering's riddim n' ting: a handheld reggae/dub groovebox and FX mic

https://teenage.engineering/products/ep-40
2•Lwrless•17m ago•0 comments

SyncForge – CRDT library faster than Yjs with full TypeScript support

https://github.com/ArthurzKV/syncforge
4•arthurzkv•19m ago•0 comments

Action Potentials for January

https://neurobiology.substack.com/p/action-potentials-for-january-46f
1•paulpauper•22m ago•0 comments

Everything I Thought I Knew About Flavor Was Wrong [video]

https://www.youtube.com/watch?v=4SBXGzH_F3w
2•gmays•26m ago•0 comments

Postmortem: Our first VLEO satellite mission (with imagery and flight data)

https://albedo.com/post/clarity-1-what-worked-and-where-we-go-next
14•topherhaddad•27m ago•2 comments

Women think artificial intelligence is riskier than men do, study finds

https://www.thebrighterside.news/post/women-think-artificial-intelligence-is-riskier-than-men-do-...
3•binning•28m ago•0 comments

Canadian woman euthanized 'against her will' after husband fed up caring for her

https://www.dailymail.co.uk/news/article-15489605/canadian-woman-euthanized-ontario-maid.html
4•binning•29m ago•0 comments

Ask HN: Rust and AI builders interested in local-first, multi-agent systems?

1•cajazzer•30m ago•2 comments

Contradictions on the Liberal Influenced Leftist Movement: On Prostitution

https://radleftunity.substack.com/p/contradictions-on-the-liberal-influenced-9f4
1•binning•31m ago•0 comments

Propositions about the New Romanticism

https://www.honest-broker.com/p/25-propositions-about-the-new-romanticism
3•dom2•32m ago•0 comments

Native GFM+ macOS (iOS WIP) Markdown Rendering via TextKit2

https://github.com/SuperSwiftMarkup/SuperSwiftMarkdownPrototype
1•colbyn•32m ago•1 comments

AI and Open Source: A Maintainer's Take (2025)

https://st0012.dev/2025/12/30/ai-and-open-source-a-maintainers-take-end-of-2025/
1•mooreds•36m ago•0 comments

Show HN: DocuDeeper – private document AI assistant,100% offline, GDPR-compliant

https://github.com/erabytse/docudeeper
1•takouzlo•36m ago•1 comments

A virtual-threaded Java HTTP server with zero dependencies

https://soklet.com/
1•mooreds•36m ago•0 comments

I Was Diagnosed with ADHD in My Forties. It Explained Everything

https://www.wsj.com/health/wellness/in-my-forties-i-found-out-i-have-adhdmaybe-you-do-too-c6fa3f84
4•ViktorRay•36m ago•0 comments

Why Does Destroying Resources via TF Suck?

https://newsletter.masterpoint.io/p/why-does-destroying-resources-via-tf-suck
6•mooreds•37m ago•5 comments

Looks like Claude is having a stroke

https://twitter.com/tskulbru/status/2015148189897101622
11•tskulbru•42m ago•3 comments

Show HN: I built a bedtime story web app in a weekend using AI tools

1•ealpopa•43m ago•1 comments

An Illustrated Guide to Hippo Castration

https://www.science.org/content/article/scienceshot-illustrated-guide-hippo-castration
1•joebig•43m ago•0 comments