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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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4
components/compositing/webview_manager.rs
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@ -2,10 +2,10 @@
* 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::collections::hash_map::{Entry, Values, ValuesMut};
use base::id::WebViewId;
use rustc_hash::FxHashMap;
use crate::webview_renderer::{UnknownWebView, WebViewRenderer};
@ -13,7 +13,7 @@ use crate::webview_renderer::{UnknownWebView, WebViewRenderer};
pub struct WebViewManager<WebView> {
/// Our top-level browsing contexts. In the WebRender scene, their pipelines are the children of
/// a single root pipeline that also applies any pinch zoom transformation.
webviews: HashMap<WebViewId, WebView>,
webviews: FxHashMap<WebViewId, WebView>,
/// The order to paint them in, topmost last.
pub(crate) painting_order: Vec<WebViewId>,