[webkit-dev] support for navigator.cores or navigator.hardwareConcurrency

Simon Fraser simon.fraser at apple.com
Mon May 5 17:52:40 PDT 2014

It allows attackers to know even more about my system, exposing more data for fingerprinting.

Do you really want a page to know that you have a  fancy-pants 24-core Mac Pro rather than a little Mac mini?


On May 5, 2014, at 4:58 PM, Filip Pizlo <fpizlo at apple.com> wrote:

> I like this.  Personally, I don't see any downside.
> Is there a bug (on bugs.webkit.org), and if not, can you create one? :-)
> -Phil
> On May 5, 2014 at 4:49:35 PM, Rik Cabanier (cabanier at gmail.com) wrote:
>> All,
>> there's a thread on blink-dev [1] and whatwg [2] to create a new parameter on the navigator object that returns the maximum number of tasks that can run in parallel. [3]
>> Is this something that WebKit would support?
>> 1: https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/B6pQClqfCp4
>> 2: http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2014-May/254200.html
>> 3: http://wiki.whatwg.org/wiki/NavigatorCores

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