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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>
This commit is contained in:
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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9
components/devtools/id.rs
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@ -2,15 +2,14 @@
* 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 base::id::{BrowsingContextId, PipelineId, WebViewId};
use rustc_hash::FxHashMap;
#[derive(Debug, Default)]
pub(crate) struct IdMap {
pub(crate) browser_ids: HashMap<WebViewId, u32>,
pub(crate) browsing_context_ids: HashMap<BrowsingContextId, u32>,
pub(crate) outer_window_ids: HashMap<PipelineId, u32>,
pub(crate) browser_ids: FxHashMap<WebViewId, u32>,
pub(crate) browsing_context_ids: FxHashMap<BrowsingContextId, u32>,
pub(crate) outer_window_ids: FxHashMap<PipelineId, u32>,
}
impl IdMap {