Intent to Ship: Atomics.waitAsync
Marja Hölttä
Contact emails
s...@chromium.org, ma...@chromium.org
Explainer
https://github.com/tc39/proposal-atomics-wait-async/blob/master/PROPOSAL.md
Draft text for an explainer to be published at v8.dev: https://docs.google.com/document/d/1swIcNkV6sJq-dTdcvcE582BG140thzHlzzOAo1eZpbE/edit#heading=h.ttltot7z6ow9
https://github.com/v8/v8.dev/pull/468
Specification
https://tc39.es/proposal-atomics-wait-async/
Design docs
TAG review
Not applicable. Scoped JS feature with limited interaction with other web platform features.
Summary
Adds Atomics.waitAsync, the async version of Atomics.wait. Atomics.waitAsync allows programmers to wait on a SharedArrayBuffer location in the same fashion as Atomics.wait but returns a Promise instead.
Risks
Interoperability and Compatibility
Low. This is a stage 3 feature in TC39.
Gecko: Positive (https://bugzilla.mozilla.org/show_bug.cgi?id=1467846) Feature reached Stage 3 in TC39. Bug doesn't seem to have activity. Lars Hansen, who works at Mozilla, is a champion of this proposal. Request for position: https://github.com/mozilla/standards-positions/issues/433
WebKit: Positive Feature reached Stage 3 in TC39. Request for position: https://lists.webkit.org/pipermail/webkit-dev/2020-August/031367.html
Web developers: No signals
Debuggability
This feature is based on Promises, so the already existing Dev Tools features for debugging Promises apply.
Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes
Is this feature fully tested by web-platform-tests?
No
Tested by test262: https://github.com/tc39/test262/tree/main/test/built-ins/Atomics/waitAsync
Tracking bug
https://bugs.chromium.org/p/v8/issues/detail?id=10239
Link to entry on the Chrome Platform Status
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Yoav Weiss
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Chris Harrelson
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Manuel Rego Casasnovas
On 14/09/2020 06:46, Chris Harrelson wrote:
> LGTM2
>
> On Sun, Sep 13, 2020 at 9:26 PM Yoav Weiss <yo...@yoav.ws
> <mailto:yo...@yoav.ws>> wrote:
>
> LGTM1
>
> On Fri, Sep 11, 2020 at 1:54 PM Marja Hölttä <ma...@chromium.org
>
>
> Contact emails
>
> s...@chromium.org <mailto:s...@chromium.org>, ma...@chromium.org
> <mailto:ma...@chromium.org>
>
> Explainer
>
>
> https://github.com/tc39/proposal-atomics-wait-async/blob/master/PROPOSAL.md
>
>
> Draft text for an explainer to be published at v8.dev
>
>
> https://github.com/v8/v8.dev/pull/468
>
>
> Specification
>
> https://tc39.es/proposal-atomics-wait-async/
>
>
> Design docs
>
>
> Version 1
>
>
> Version 2
> <https://docs.google.com/document/d/1aeEGDm1XSqoJkQQKz9F75WqnuAa2caktxGy_O_KpO9Y/edit?usp=sharing>
> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAED6dUB61suiy%2BtezABbXhAHUSt_8HBnCQjoQmjxupX482KesQ%40mail.gmail.com
> --
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