824517 - Quickstub the .performance property on Window objects

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, defect)

Description

[Boris Zbarsky [:bzbarsky]]

This came up in bug 824495.  Getting .performance is slow because it ends up doing xpconnectery.

The attached patch speeds up the window.performance.now testcase in bug 824495 by 2x or so, on Mac.

Comment 1

[Boris Zbarsky [:bzbarsky]]

Attachment: Quickstub window.performance.

Comment 2

[Peter Van der Beken [:peterv]]

Comment on attachment 695532 [details] [diff] [review]
Quickstub window.performance.

Review of attachment 695532 [details] [diff] [review]:
-----------------------------------------------------------------

::: dom/base/nsGlobalWindow.cpp
@@ +10770,5 @@
>  }
>  
>  // static
>  bool
> +nsPIDOMWindow::HasPerformanceSupport() 

Trailing whitespace.

Comment 3

[Boris Zbarsky [:bzbarsky]]

http://hg.mozilla.org/integration/mozilla-inbound/rev/1d51451f6674 with that fixed.

Marking in-testsuite- like all other performance bugs.  :(

Comment 4

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/1d51451f6674