Change the interest cache hasher to rapidhash

Author: hoxxep

tracing-log/Cargo.toml

@@ -21,19 +21,19 @@ rust-version = "1.65.0"
 default = ["log-tracer", "std"]
 std = ["log/std"]
 log-tracer = []
-interest-cache = ["lru", "ahash"]
+interest-cache = ["lru","rapidhash"]
 
 [dependencies]
 tracing-core = { path = "../tracing-core", version = "0.1.28"}
 log = { version = "0.4.17" }
 once_cell = "1.13.0"
 lru = { version = "0.7.7", optional = true }
-ahash = { version = "0.7.7", optional = true }
+rapidhash = { version = "3.0.0", default-features = false, optional = true }
 
 [dev-dependencies]
 tracing = { path = "../tracing", version = "0.1.35"}
 tracing-subscriber = { path = "../tracing-subscriber" }
-criterion = { version = "0.3.6", default-features = false }
+criterion = { version = "0.7.0", default-features = false }
 
 [badges]
 maintenance = { status = "actively-maintained" }

tracing-log/src/interest_cache.rs

@@ -1,7 +1,7 @@
-use ahash::AHasher;
 use log::{Level, Metadata};
 use lru::LruCache;
 use once_cell::sync::Lazy;
+use rapidhash::fast::{RapidHasher, RandomState as RapidRandomState};
 use std::cell::RefCell;
 use std::hash::Hasher;
 use std::sync::atomic::{AtomicUsize, Ordering};
@@ -90,15 +90,15 @@ struct Key {
 struct State {
     min_verbosity: Level,
     epoch: usize,
-    cache: LruCache<Key, u64, ahash::RandomState>,
+    cache: LruCache<Key, u64, RapidRandomState>,
 }
 
 impl State {
     fn new(epoch: usize, config: &InterestCacheConfig) -> Self {
         State {
             epoch,
             min_verbosity: config.min_verbosity,
-            cache: LruCache::new(config.lru_cache_size),
+            cache: LruCache::with_hasher(config.lru_cache_size, RapidRandomState::default()),
         }
     }
 }
@@ -175,7 +175,7 @@ pub(crate) fn try_cache(metadata: &Metadata<'_>, callback: impl FnOnce() -> bool
 
         let target = metadata.target();
 
-        let mut hasher = AHasher::default();
+        let mut hasher = RapidHasher::default();
         hasher.write(target.as_bytes());
 
         const HASH_MASK: u64 = !1;