The static Atomics
.isLockFree()
method is used to determine whether to use locks or atomic operations. It returns true
, if the given size is one of the BYTES_PER_ELEMENT property of integer TypedArray types.
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Syntax
Atomics.isLockFree(size)
Parameters
size
- The size in bytes to check.
Return value
A Boolean
indicating whether the operation is lock free.
Examples
Using isLockFree
Atomics.isLockFree(1); // true Atomics.isLockFree(2); // true Atomics.isLockFree(3); // false Atomics.isLockFree(4); // true Atomics.isLockFree(5); // false Atomics.isLockFree(6); // false Atomics.isLockFree(7); // false Atomics.isLockFree(8); // true
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Atomics.isLockFree' in that specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
isLockFree | Chrome
Full support
68
| Edge
Full support
79
| Firefox
Full support
78
| IE No support No | Opera No support No | Safari No support 10.1 — 11.1 | WebView Android
No support
60 — 63
| Chrome Android
No support
60 — 63
| Firefox Android
Full support
57
| Opera Android No support No | Safari iOS No support 10.3 — 11.3 | Samsung Internet Android
No support
No
| nodejs Full support 8.10.0 |
Legend
- Full support
- Full support
- No support
- No support
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.