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Removed FnvHash and transformed the rest to FxHashmap (#39233)

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This should be the final PR for the Hash Function series that is
trivial.

Of note: I decided to transform `HashMapTracedValues<Atom,..>` to use
FxBuildHasher. This is likely not going to improve performance as Atom's
already have a unique u32 that is used as the Hash but it safes a few
bytes for the RandomState that is normally in the HashMap.

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>

Testing: Hash function changes should not change functionality, we
slightly decrease the size and unit tests still work.

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>
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Narfinger 2025-09-10 15:34:54 +02:00 • committed by GitHub
parent 726b456120
commit 84465e7768
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55 changed files with 211 additions and 202 deletions
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5
components/layout/context.rs
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@ -2,11 +2,11 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::collections::HashMap;
use std::sync::Arc;
use embedder_traits::UntrustedNodeAddress;
use euclid::Size2D;
use fnv::FnvHashMap;
use fonts::FontContext;
use layout_api::wrapper_traits::ThreadSafeLayoutNode;
use layout_api::{
@ -102,8 +102,7 @@ pub(crate) struct ImageResolver {
// A cache that maps image resources used in CSS (e.g as the `url()` value
// for `background-image` or `content` property) to the final resolved image data.
pub resolved_images_cache:
Arc<RwLock<FnvHashMap<(ServoUrl, UsePlaceholder), CachedImageOrError>>>,
pub resolved_images_cache: Arc<RwLock<HashMap<(ServoUrl, UsePlaceholder), CachedImageOrError>>>,
/// The current animation timeline value used to properly initialize animating images.
pub animation_timeline_value: f64,