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Make LRUCache use a linked list to reduce memmoves.

Browse source 
https://bugzilla.mozilla.org/show_bug.cgi?id=1398957
This commit is contained in:
Matt Brubeck 2017-09-12 10:22:23 -07:00
parent 2cbd27c83a
commit 286888009f
5 changed files with 172 additions and 54 deletions
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6
components/style/sharing/mod.rs
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@ -68,7 +68,7 @@ use Atom;
use applicable_declarations::ApplicableDeclarationBlock;
use atomic_refcell::{AtomicRefCell, AtomicRefMut};
use bloom::StyleBloom;
use cache::LRUCache;
use cache::{LRUCache, Entry};
use context::{SelectorFlagsMap, SharedStyleContext, StyleContext};
use dom::{TElement, SendElement};
use matching::MatchMethods;
@ -409,7 +409,7 @@ impl<E: TElement> StyleSharingTarget<E> {
}
struct SharingCacheBase<Candidate> {
entries: LRUCache<[Candidate; SHARING_CACHE_BACKING_STORE_SIZE]>,
entries: LRUCache<Candidate, [Entry<Candidate>; SHARING_CACHE_BACKING_STORE_SIZE]>,
}
impl<Candidate> Default for SharingCacheBase<Candidate> {
@ -448,7 +448,7 @@ impl<E: TElement> SharingCache<E> {
F: FnMut(&mut StyleSharingCandidate<E>) -> bool
{
let mut index = None;
for (i, candidate) in self.entries.iter_mut().enumerate() {
for (i, candidate) in self.entries.iter_mut() {
if is_match(candidate) {
index = Some(i);
break;