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Gossamer: a Rust-flavoured language with real goroutines and pause-free memory

https://gossamer-lang.org/
26•mwheeler•1h ago

Comments

quotemstr•27m ago
Gossamer has a cycle collector and eager reference counting. Good luck dropping the last reference to a 10,000-node graph, especially if cyclic. That means it doesn't have "pause free" memory. If you want pause freedom, go use ZGC or another modern GC on a modern VM.

I just can't take seriously this spate of languages that ignore the past 30 years of research into automatic memory management. We have multiple open-source pauseless miracles GCs right there before our eyes, yet it's the trendy thing in language design to foist memory management on users.

You don't even have to use a big VM if you want good GC. Go use MPS. Lots of options out there, even if you want to implement your own VM.

platinumrad•21m ago
> We have multiple open-source pauseleses miracles right there before our eyes

Is this meaningfully true in a practical sense? I've been writing code with soft real-time requirements and I don't think your notion of "pauseless" suffices. And if these miracles are open-source and right before our eyes, why do languages like Crystal and D still use Boehm?

quotemstr•19m ago
The charitable explanation is the authors lack the time to rebase onto something more modern.
platinumrad•11m ago
You seem to have a very low opinion of other people. If these miraculous collectors are so generally applicable, why are very smart people putting effort into things like Perseus?
quotemstr•5m ago
Smart, honest people can have sincere and earnest disagreements. I believe the manual-memory-management people are mistaken. That's not to say they're stupid: it means I believe they're going down the wrong path, as smart people have done since time immemorial. I wish them all the best.
iyn•20m ago
> We have multiple open-source pauseless miracles GCs right there in front of us

Can you share some links/references?

quotemstr•11m ago
ZGC is extremely good work.

https://wiki.openjdk.org/spaces/zgc/pages/34668579/Main

> ZGC performs all expensive work concurrently, without stopping the execution of application threads for more than a millisecond. It is suitable for applications which require low latency. Pause times are independent of the heap size that is being used. ZGC works well with heap sizes from a few hundred megabytes to 16TB.

Go's GC is also very good: https://go.dev/blog/greenteagc.

V8's Orinoco is also pretty good now. It's improved a lot over the past decade and is now mostly-parallel. (A decade is about how long one of these things takes: high-performance GC is hard.)

I'm also a fan of MPS: it's a big of dark horse because it's more a GC construction kit than a ready-to-go GC, but it's fast and flexible, and I'd start with it any day over Boehm if I were making a VM from scratch.

platinumrad•6m ago
If I were writing this language, I'd probably just compile it to Go, although that means Rust extensions would either incur cgo costs or have to be replaced with Go extensions.
poulpy123•15m ago
Sorry but the name means bitterkid in french, I can't get over it :D
ambicapter•9m ago
I'm french and had to think about it for a little bit.
throwrioawfo•12m ago
There was once a time when I'd see a page like this and think "wow, must be a great project with such a polished website".

Now, it's just a neutral or perhaps even very slightly negative signal (especially the em-dash in the very first line of the page).

Anyone able to tell me if this is a project actually worth paying attention to, or just another raindrop in the current monsoon of slop?

samuell•7m ago
Super happy to see more languages adopt true goroutines with M:N scheduling! Surprised more haven't. Among compiled language I'm only aware of Go and Crystal off the top of my mind.

Chronic Pain: The Science of Unlearning Pain

https://www.zeit.de/gesundheit/2025-11/chronic-pain-causes-treatments-pain-perception-english
1•Tomte•57s ago•0 comments

PlayStation Is Deleting 551 Movies from Customers' Accounts

https://kotaku.com/playstation-store-movies-digital-studio-canal-terminator-2000711013
1•ortusdux•2m ago•0 comments

US auto regulators want to kill robotaxi brake pedals

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1•mikhael•3m ago•0 comments

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https://arstechnica.com/gadgets/2026/06/microsoft-adds-another-year-to-windows-10-extended-update...
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https://www.youtube.com/watch?v=RcjbMCRErz4
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2•Bender•4m ago•0 comments

Monoids

https://en.wikipedia.org/wiki/Monoid
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https://steel.dev/blog/atlas-sdk
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https://yashgarg.dev/posts/the-illusion-of-ownership/
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The FIFA World Cup, and Investor Attention in the U.S. Stock Market

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Israel Asked Facebook to Censor Iran War Content, Internal Documents Show

https://theintercept.com/2026/06/18/israel-facebook-censor-content-moderation-iran-war/
5•Jimmc414•10m ago•1 comments

War by Other Means

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https://www.axios.com/2026/06/26/om-malik-remembered
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Red-Teaming the Agentic Red-Team

https://arxiv.org/abs/2606.24496
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Apache Kafka's log compaction corrupts data

https://www.redpanda.com/blog/kafka-log-compaction-bug-fix-streaming
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https://www.nytimes.com/2026/06/26/science/richard-scolyer-dead.html
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Hypersonic.js

https://github.com/hypersonic-js/hypersonic-js
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https://github.com/royashbrook/hush
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https://www.heise.de/en/news/Micron-sets-high-memory-prices-for-5-years-11344834.html
2•logickkk1•31m ago•1 comments

Partially Observable Stochastic Games for Cyber Deception [pdf]

https://www.gamesec-conf.org/2020/GameSec_Proceeding_2020/Paper%202.4.pdf
3•jruohonen•31m ago•0 comments

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https://www.youtube.com/watch?v=TF8THY5spmo
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https://www.reuters.com/business/environment/hot-stuck-paris-london-homes-not-built-heat-2026-06-26/
2•rawgabbit•32m ago•2 comments

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https://github.com/vicmaster/framesmith
2•vicvelazquez•33m ago•0 comments