#asyncrust — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #asyncrust, aggregated by home.social.
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🚀 Yawn-inducing nerd-fest alert! It's the ultimate showdown between Async Rust and #C #RTOS on an #STM32F446 #microcontroller. Spoiler: reading this is as exciting as watching paint dry, but with more acronyms and fewer laughs. 🤖🎨
https://tweedegolf.nl/en/blog/65/async-rust-vs-rtos-showdown/ #AsyncRust #TechShowdown #NerdFest #HackerNews #ngated -
Embedded Rust RTOS vs. C RTOS
https://tweedegolf.nl/en/blog/65/async-rust-vs-rtos-showdown/
Comments: https://news.ycombinator.com/item?id=49540415
#HackerNews #EmbeddedRust #C #RTOS #RTOSComparison #AsyncRust #TechTrends
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heyyy uuuhh if anyone knows how to implement a zero copy streaming parser (objects yielded would be a struct with Cow<'_,str> fields) with tokio-util codec crate hmu cos I can't figure it out lol
basically same issue as here, with no answers:
https://users.rust-lang.org/t/design-problem-minimizing-allocation-copying-while-parsing-for-a-tokio-decoder/11538
#rust #tokio #asyncRust -
Building on FUSE in Rust tends to involve a lot of boilerplate. libfuse-fs is an attempt to change that - trait-based abstractions, async I/O, overlay and passthrough support out of the box.
At Oxidize 2026, Ruiji Yu (Nanjing University) covers the design and lessons from real integrations: monorepo access and container image building.
🔗 https://oxidizeconf.com/sessions/libfuse_fs_a_ready_to_use_filesystem_library_based_on_fuse
#Oxidize2026 #RustLang #FUSE #Filesystem #AsyncRust #SystemsProgramming
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@walterjizz IMO, message passing concurrency is way more flexible in the long run, so I'd go with that.
@PuercoPop Newer versions of tokio now come with a LocalRuntime, which allows spawning of !Send + !Sync Futures (unfortunately, they still need to be 'static, though😐):
https://docs.rs/tokio/latest/tokio/runtime/struct.LocalRuntime.html#method.spawn_localI'm probably biased, but I really like smol, because it is very flexible, e.g. your Futures don't even need to be 'static:
https://docs.rs/smol/latest/smol/struct.LocalExecutor.html#method.spawn -
Fuzzing finds bugs in Rust code - reliably so. But async Rust has largely stayed out of reach with its complexity making it hard for fuzzers to explore meaningfully.
At Oxidize 2026, Morgan Hill (@pcwizz) walks through what it takes to actually fuzz async Rust: the naive approaches that don't work, and an involved technique that does - involving LibAFL, user mode QEMU, and a fair amount of head scratching.
🔗 https://oxidizeconf.com/sessions/awaiting_exploitation
#Oxidize2026 #RustLang #Fuzzing #SecurityResearch #AsyncRust
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UwU - There is a new #Rust #book #bundle over at #HumbleBooksBundle :awesome:
https://www.humblebundle.com/books/rust-systems-programming-bundle-books
Amongst others, it contains the excellent "Asynchronous Programming in Rust" book by Carl Fredrik Samson, which I can highly recommend! 👍
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🚀 Async Rust: the eternal MVP, where dreams of a supercharged compiler go to die. 🤣 But hey, let's keep writing "executor agnostic" code while waiting for the real magic to happen. 🪄✨
https://tweedegolf.nl/en/blog/237/async-rust-never-left-the-mvp-state #AsyncRust #superchargedCompiler #executorAgnostic #codeMagic #HackerNews #ngated -
Tokio!
It's 'static + multithreaded-by-default requirement has created the myth that async #Rust is inherently difficult.
People should use `smol` more - here's why:
#Async Rust can be a pleasure to work with (without `Send + Sync + 'static`) - by Evan Schwartz:
https://emschwartz.me/async-rust-can-be-a-pleasure-to-work-with-without-send-sync-static/
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🚀✨ RustConf 2025: where we learn that "cancelling" async Rust is as easy as cancelling your gym membership—good luck with that! The article promises a thrilling ride through the labyrinth of #programming jargon, complete with links nobody asked for and slides only a mother could love. 🎢🗣️
https://sunshowers.io/posts/cancelling-async-rust/ #RustConf2025 #asyncRust #humor #techcommunity #HackerNews #ngated -
Ok, @calisti, I _think_, I've figured it out now (please read until the later parts of the toots as they are the most important)!🤓
Tldr; The `or` or `race` operators _on their own_ are not suitable for cancelling streams! One needs a `StopToken` or enum value _within the stream_ that signals cancellation/allows for short-circuiting.
1/?
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Hey #Rust,
how dare you look so elegant as a systems programming language! 💅
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Second: Pinning helpers!
When doing async #Rust, there will be a point, where you'll get the ominous "Doesn't implement Unpin" error and "You need to pin your value".
First, learn about Pinning:
https://doc.rust-lang.org/std/pin/Like, _really_ learn and understand it:
https://fasterthanli.me/articles/pin-and-sufferingAnd then use smol's pin! macro and the `pin_project` crate:
https://docs.rs/pin-project/latest/pin_project/I might continue this thread with more insights I gain during this little project - stay tuned! 🙂
4/4?
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Async #Rust is actually awesome! :awesome:
The last few days I've built a prototype(!) of a global "Hotkey" system e.g.:
Press & Hold `LCtrl + Space`
=> an async stream starts and only finishes if:
- another key is pressed or
- one of the Hotkeys is releasedIf it is not clear by now: this is a state-machine, which fits _perfectly_ into Rust's #async model!
And the best part: This is actually _the first time_ I've ever touched async #RustLang! Such a pleasant experience!
1/?
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Last chance to sign up for workshops at #rustconf25, Sept 2 in Seattle: Learn Async Design Patterns, Async Fundamentals, or Rust at the Edge from experts. Register before seats sell out! Some only have ONE seat remaining. https://ti.to/rustconf/2025?source=mastodon
#RustConf #AsyncRust #AI #rustlang -
Small classes. Expert instructors. Practical skills you can use immediately. Join Async Day at #rustconf25, Sept 2 in Seattle: Async Design Patterns, Async Rust & C++, Async Fundamentals, and Rust at the Edge. Sign up! https://ti.to/rustconf/2025?source=mastodon
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Get your hands dirty with Async Day @ #RustConf25!
Happening Sept 2, the day before RustConf kicks off, Async Day offers 3 expert-led workshops:
🧩 Async design patterns
🔀 Async Rust & C++
🚦 Async fundamentals (REST, gRPC & more)
It’s hands-on, small group learning. There’s an added fee, but the practical skills you’ll gain and the direct access to top instructors are priceless.
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@noboilerplate THIS!
I think a lot of people inadvertently assume async #RustLang is so different from sync Rust, because the way it is - when in fact it's because of the (most popular) async runtime they're using.
We should look way more into alternative #async runtimes to #Tokio, e.g. smol:
https://floss.social/@janriemer/111669258656959538
#Smol allows you to use non-'static Futures by using a local executor:
https://floss.social/@janriemer/111669668856899636
It looks a lot more like "normal" #Rust.
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k23 (the Wasm OS) just got a shiny new async executor! But we need your help:
The executor is likely full of concurrency bugs, deadlocks and worse.So if you want to help out the project an absolute ton head over here and help get kasync tested:
https://github.com/JonasKruckenberg/k23/issues/464 -
Oh, look! Another "Visual Journey" through Async Rust🚀, because reading verbose documentation just wasn't enough fun😜. Let's turn our brains to mush with pretty pictures while pretending we're not just scrolling GitHub like zombies🧟♂️.
https://github.com/alexpusch/rust-magic-patterns/blob/master/visual-journey-through-async-rust/Readme.md #VisualJourney #AsyncRust #RustProgramming #DeveloperHumor #GitHubZombies #HackerNews #ngated -
A Visual Journey Through Async Rust
#HackerNews #AsyncRust #VisualJourney #RustProgramming #TechEducation
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Ah, the noble quest to tame the wild beast of async Rust with the mystical powers of "deterministic simulation testing" 🤔. Because, naturally, the best way to debug a language that already gives you a headache is to throw more complex simulations at it. 🧠🔍 Surely, this will make everything clear as mud! 🌪️
https://s2.dev/blog/dst #asyncRust #deterministicTesting #debugging #programming #humor #HackerNews #ngated -
Is there a #rust crate that provides an "async timer"?
Basically a future wrapper that records the total busy and idle times of the future it wraps and then returns those times together with the ready result of the wrapped future.
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New blog post: A no-std, no-alloc asynchronous USB host stack in Rust for the RP2040, and what I learned while writing it:
https://pdh11.blogspot.com/2024/12/things-i-learned-writing-usb-host-stack.html
#RustLang #AsyncRust #rp2040 #embedded #rust -
Did you know that the meaning of all the columns in Tokio Console is documented?
Someone asked about this today, and being able to point to the docs was great!
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Async #Rust is not safe with io_uring | by Tzu Gwo
