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Use Gecko's simpler Bloom filter instead of one based on hash

Browse source 
stretching.

This preserves the usage of the Bloom filter throughout style recalc,
but the implementation is rewritten. Provides a 15% improvement on
Guardians of the Galaxy.
This commit is contained in:
Patrick Walton 2014-09-16 22:58:52 -07:00
parent 878ece58da
commit 2a790d06dd
10 changed files with 335 additions and 357 deletions
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7
components/layout/layout_task.rs
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@ -63,9 +63,7 @@ use std::cell::Cell;
use std::comm::{channel, Sender, Receiver, Select};
use std::mem;
use std::ptr;
use style;
use style::{TNode, AuthorOrigin, Stylesheet, Stylist};
use style::iter_font_face_rules;
use style::{AuthorOrigin, Stylesheet, Stylist, TNode, iter_font_face_rules};
use sync::{Arc, Mutex, MutexGuard};
use url::Url;
@ -647,8 +645,7 @@ impl LayoutTask {
None => {
let layout_ctx = LayoutContext::new(&shared_layout_ctx);
let mut applicable_declarations = ApplicableDeclarations::new();
let mut parent_bf = Some(BloomFilter::new(
style::RECOMMENDED_SELECTOR_BLOOM_FILTER_SIZE));
let mut parent_bf = Some(box BloomFilter::new());
node.recalc_style_for_subtree(&*rw_data.stylist,
&layout_ctx,
&mut parent_bf,