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The Atomics.pause() static method gives a hint to the CPU that the code calling the method is in a short-duration wait for shared memory, known as spinning or a spinlock.

Status

Baseline Newly Available (since 2025-04-01)

This feature is expected to reach Baseline Widely Available status on: 2027-10-01

MDN documentation

Atomics.pause()

Specifications

Atomics.pause, from TC39 (Ecma International).

Browser support

Chrome 133 Released on 2025-02-04
Chrome Android 133 Released on 2025-02-04
Edge 133 Released on 2025-02-06
Firefox 137 Released on 2025-04-01
Firefox for Android 137 Released on 2025-04-01
Safari 18.4 Released on 2025-03-31
Safari on iOS 18.4 Released on 2025-03-31

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