Re: [HighResolutionTime2] WorkerPerformance interface

It could work. This is the first I'd heard of Exposed (admittedly, I
haven't worked on browsers for a while now).

The main thing would be that Performance is defined in Navigation Timing
[1] and added on to in other specs, like Resource Timing [2]. For worker
scope, we don't want the attributes from any of those, but we do want the
now() function, which we'd be redefining from [3].

Is Exposed able to express that without monkeying with the older specs
(which are already recommendations)?

The net result would end up looking something like this, I think:

[
    Exposed=(Window,Workers)
] interface Performance : EventTarget {
    [Exposed=Window] readonly attribute PerformanceNavigation navigation;
    [Exposed=Window] readonly attribute PerformanceTiming timing;

    [Exposed=Window] sequence<PerformanceEntry> getEntries();
    [Exposed=Window] sequence<PerformanceEntry> getEntriesByType(DOMString
entryType);
    [Exposed=Window] sequence<PerformanceEntry> getEntriesByName(DOMString
name, optional DOMString entryType = null);

    [Exposed=Window] attribute EventHandler onresourcetimingbufferfull;

    [Exposed=Window] void mark(DOMString markName);
    [Exposed=Window] void clearMarks(optional DOMString markName = null);

    [Exposed=Window] void measure(DOMString measureName, optional DOMString
startMark = null, optional DOMString endMark = null);
    [Exposed=Window] void clearMeasures(optional DOMString measureName =
null);

    [Exposed=(Window,Worker)] double now();
};

Is there a simpler way to communicate this? Does Exposed work with partial
interfaces?

James

[1]
https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/Overview.html
[2]
https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/ResourceTiming/Overview.html
[3]
https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/HighResolutionTime/Overview.html


On Sun, Aug 17, 2014 at 1:51 PM, Arvind Jain <arvind@google.com> wrote:

> Adding Jatinder and James who are the editors of the spec for their
> comments.
>
> Arvind
>
> On Mon, Jul 14, 2014 at 3:05 AM, Ms2ger <ms2ger@gmail.com> wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Hi all,
> >
> > It appears that the High Resolution Time spec defines [1] a new
> > WorkerPerformance interface (presumably only exposed in workers, see
> > my other email [2]). There does not seem to be a need for this; it
> > would be simple to reuse the interface and only expose the
> > window-specific members on window scopes with the [Exposed] extended
> > attribute.
> >
> > Thoughts?
> > Ms2ger
> >
> > [1]
> >
> https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/HighResolutionTime2/Overview.html#sec-now-method
> > [2]
> http://lists.w3.org/Archives/Public/public-web-perf/2014Jul/0076.html
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