Atomics stabilisation

[chemicstry]

I'm not sure if this is the correct repository to ask, but was wondering about the wasm32 atomics stabilisation. Multithreading in wasm was introduced almost 2 years ago with this blogpost, however, compiling the example still requires not only nightly rust, but also rebuilding std lib.

So I was wondering what is the current progress on wasm threads and when will we be able to use them in stable rust?

[alexcrichton]

AFAIK no progress has been made on shipping this in the standard library. The best idea we've had (which is the same as two years ago) is to have a second target (naming TBD) which is wasm-with-atomics. Other than -Zbuild-std, though, everything should be ready to go.

[chemicstry]

Thanks for the explanation! Is there anything I could help with to make this move forward?

There are multiple projects that would already like to use threading in wasm, but this really complicates building 😕

[alexcrichton]

Unfortunately I don't know of a great way to move it forward. The next step is probably for a concrete proposal to be made, so the best help would be to come up with a proposal yourself, but that's no light undertaking.

[alexcrichton]

I've opened rust-lang/rust#77839 to continue discussion on this on the Rust side of things.