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4 commits

Author SHA1 Message Date
Patrick Walton
750bbed2cb gfx: Perform more aggressive caching in 
`FontContext::get_layout_font_group_for_style()`.

There are several optimizations here:

* We make font families atoms, to allow for quicker comparisons.

* We precalculate an FNV hash of the relevant fields of the font style
  structure.

* When obtaining a platform font group, we first check pointer equality
  for the font style. If there's no match, we go to the FNV hash. Only
  if both caches miss do we construct and cache a font group. Note that
  individual fonts are *also* cached; thus there are two layers of
  caching here.

15% improvement in total layout thread time for Facebook Timeline.
 2015-04-01 08:58:16 -07:00
Simon Sapin
2a50755c8a Move selector matching to an external library, for use outside Servo. 2015-02-23 16:29:34 +01:00
Simon Sapin
966af0030a Upgrade to rust-cssparser master. 
* Use associated types
* Avoid mutation to gather parsing results.
 2015-01-30 15:07:29 +01:00
Simon Sapin
d034a6c6bc Port to the new cssparser. 
https://github.com/servo/rust-cssparser/pull/68
 2015-01-21 22:23:46 +01:00