Contact emails
[email protected]

Explainer
None


Specification
https://tc39.es/proposal-atomics-microwait


Summary

Adds the Atomics.pause method to hint the CPU that the current code is 
executing a spinlock.



Blink component
Blink>JavaScript>Language


TAG review
None


TAG review status
Not applicable


Risks




Interoperability and Compatibility

None. This is a new static method on the Atomics namespace object.


Gecko: Positive This is a Stage 3 TC39 proposal.

WebKit: Positive This is a Stage 3 TC39 proposal.

Web developers: No signals

Other signals:


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?

None




Debuggability

None



Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, 
ChromeOS, Android, and Android WebView)?
Yes


Is this feature fully tested by web-platform-tests?
Yes
Exists in test262: 
https://github.com/tc39/test262/tree/main/test/built-ins/Atomics/pause



Flag name on about://flags
--js-atomics-pause


Finch feature name
V8Flag_js_atomics_pause


Requires code in //chrome?
False


Estimated milestones


Shipping on desktop 133

DevTrial on desktop 128

Shipping on Android 133

DevTrial on Android 128

Shipping on WebView 133




Anticipated spec changes

Open questions about a feature may be a source of future web compat or interop 
issues. Please list open issues (eg links to known github issues in the project 
for the feature specification) whose resolution may introduce web 
compat/interop risk (eg, changing to naming or structure of the API in a 
non-backward-compatible way).
None


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5106098833719296?gate=5145399126654976


This intent message was generated by Chrome Platform Status.

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