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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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8
components/net/filemanager_thread.rs
View file

@ -2,7 +2,6 @@
* 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, HashSet};
use std::fs::File;
use std::io::{BufRead, BufReader, Read, Seek, SeekFrom};
use std::ops::Index;
@ -25,6 +24,7 @@ use net_traits::filemanager_thread::{
};
use net_traits::http_percent_encode;
use net_traits::response::{Response, ResponseBody};
use rustc_hash::{FxHashMap, FxHashSet};
use servo_arc::Arc as ServoArc;
use servo_config::pref;
use tokio::sync::mpsc::UnboundedSender as TokioSender;
@ -54,7 +54,7 @@ struct FileStoreEntry {
is_valid_url: AtomicBool,
/// UUIDs of fetch instances that acquired an interest in this file,
/// when the url was still valid.
outstanding_tokens: HashSet<Uuid>,
outstanding_tokens: FxHashSet<Uuid>,
}
#[derive(Clone)]
@ -433,13 +433,13 @@ enum BlobBounds {
/// from FileID to FileStoreEntry which might have different backend implementation.
/// Access to the content is encapsulated as methods of this struct.
struct FileManagerStore {
entries: RwLock<HashMap<Uuid, FileStoreEntry>>,
entries: RwLock<FxHashMap<Uuid, FileStoreEntry>>,
}
impl FileManagerStore {
fn new() -> Self {
FileManagerStore {
entries: RwLock::new(HashMap::new()),
entries: RwLock::new(FxHashMap::default()),
}
}