On Thu, May 18, 2017, at 10:10 AM, L. David Baron wrote:
> On Thursday 2017-05-18 11:22 +1000, Mark Hammond wrote:
> > I'm wondering if there are any ideas about how to solve this optimally?
> > Naively, it seems that the (broadest sense of the term) "platform" might be
> > able to help here using it's knowledge of the event-loop state - eg, a
> > function that indicates "are we about to starve the event loop and become
> > janky?", or possibly even the whole hog (ie, "please yield to the event loop
> > if you think now is a good time, otherwise just hand back a pre-resolved
> > promise").
> 
> One other option would be to use time rather than iterations as a
> measure of when to return.
> 
> A platform API that's somewhat like this is requestIdleCallback,
> whose spec is at https://w3c.github.io/requestidlecallback/ -- in
> particular, the timeRemaining() method on the IdleDeadline object
> passed to the callback.  See also:
> https://developer.mozilla.org/en-US/docs/Web/API/Window/requestIdleCallback
> https://developer.mozilla.org/en-US/docs/Web/API/Background_Tasks_API
> 
> I'm not sure whether it works for privileged (chrome) JS, but it
> seems like it ought to...

The non-DOM version of rIC is being tracked by
https://bugzilla.mozilla.org/show_bug.cgi?id=1353206 and
https://bugzilla.mozilla.org/show_bug.cgi?id=1358476

Kanru 
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