Raph Levien 6bbcf44f68 Caching for layouts and harfbuzz faces ...

This patch adds caching for both layouts and for HarfBuzz face objects.
The granularity of the cache for layouts is words, so it splits the
input string at word boundaries (using a heuristic). There are is also
some refactoring to reduce the amount of allocation and copying, and
movement towards properly supporting contexts.

The size of the caches is a fixed number of entries; thus, it is
possible to consume a large amount of memory by filling the cache with
lots of large strings. This should be refined towards a scheme that
bounds the total memory used by the cache.

Change-Id: Ie8176857e2d78656ce5479a7c04969819ef2718d

2014-05-22 16:30:33 -07:00

engine/src/flutter

Caching for layouts and harfbuzz faces

2014-05-22 16:30:33 -07:00

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328 MiB

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