NavigatorConcurrentHardware - Web API 接口参考 编辑

The NavigatorConcurrentHardware mixin adds to the Navigator interface features which allow Web content to determine how many logical processors the user has available, in order to let content and Web apps optimize their operations to best take advantage of the user's CPU.

Note: 此特性在 Web Worker 中可用。

The number of logical processor cores is a way to measure the number of threads which can effectively be run at once without them having to share CPUs. Modern computers have multiple physical cores in their CPU (two or four cores is typical), but each physical core is also usually able to run more than one thread at a time using advanced scheduling techniques. So a four-core CPU may return 8. The browser may, however, choose to reduce the number in order to represent more accurately the number of Workers that can run at once

Properties

NavigatorConcurrentHardware.hardwareConcurrency 只读

Returns the number of logical processors which may be available to the user agent. This value is always at least 1, and will be 1 if the actual number of logical processors can't be determined.

Methods

The NavigatorConcurrentHardware mixin has no methods.

Specifications

Specification	Status	Comment
HTML Living Standard NavigatorConcurrentHardware	Living Standard	Initial definition.

Browser compatibility

BCD tables only load in the browser

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.

See also

• Navigator
• WorkerNavigator