⚡ Bolt: Optimize Rust memory footprint & Cargo profile

rust/cbor-cose/Cargo.toml

@@ -33,3 +33,4 @@ lto = "fat"
 codegen-units = 1
 strip = true
 opt-level = "z"
+panic = "abort"

rust/cbor-cose/src/fingerprint.rs

@@ -22,7 +22,7 @@ const DEFAULT_FP_URL: &str =
 #[allow(dead_code)]
 struct FingerprintCache {
     /// Map of device codename → fingerprint string.
-    entries: AHashMap<String, String>,
+    entries: AHashMap<Box<str>, Box<str>>,
 }
 
 /// Parse a fingerprint list from raw text.
@@ -91,9 +91,9 @@ pub fn fetch_fingerprints(url: Option<&str>) -> Result<usize, String> {
     let entries_ref = parse_fingerprints(body);
     let count = entries_ref.len();
 
-    let entries: AHashMap<String, String> = entries_ref
+    let entries: AHashMap<Box<str>, Box<str>> = entries_ref
         .into_iter()
-        .map(|(k, v)| (k.to_string(), v.to_string()))
+        .map(|(k, v)| (Box::from(k), Box::from(v)))
         .collect();
 
     let cache = FingerprintCache { entries };
@@ -120,7 +120,7 @@ where
 {
     let guard = CACHE.read().ok()?;
     let cache = guard.as_ref()?;
-    cache.entries.get(device).map(|s| f(s.as_str()))
+    cache.entries.get(device).map(|s| f(s.as_ref()))
 }
 
 /// Get all cached fingerprints as a list of `"device=fingerprint"` lines.
@@ -156,9 +156,9 @@ pub fn inject_fingerprints(data: &str) -> usize {
     let entries_ref = parse_fingerprints(data);
     let count = entries_ref.len();
 
-    let entries: AHashMap<String, String> = entries_ref
+    let entries: AHashMap<Box<str>, Box<str>> = entries_ref
         .into_iter()
-        .map(|(k, v)| (k.to_string(), v.to_string()))
+        .map(|(k, v)| (Box::from(k), Box::from(v)))
         .collect();
 
     let cache = FingerprintCache { entries };

rust/cbor-cose/src/properties.rs

@@ -1,14 +1,14 @@
 use ahash::AHashMap;
 use std::sync::RwLock;
 
-static PROPERTIES: RwLock<Option<AHashMap<String, String>>> = RwLock::new(None);
+static PROPERTIES: RwLock<Option<AHashMap<Box<str>, Box<str>>>> = RwLock::new(None);
 
 pub fn get_property<R, F: FnOnce(&str) -> R>(name: &str, f: F) -> Option<R> {
     // Avoid panics inside Zygote
     if let Ok(cache) = PROPERTIES.read() {
         cache
             .as_ref()
-            .and_then(|c| c.get(name).map(|s| f(s.as_str())))
+            .and_then(|c| c.get(name).map(|s| f(s.as_ref())))
     } else {
         None
     }
@@ -17,7 +17,7 @@ pub fn get_property<R, F: FnOnce(&str) -> R>(name: &str, f: F) -> Option<R> {
 pub fn set_property(name: &str, value: &str) {
     if let Ok(mut cache) = PROPERTIES.write() {
         let map = cache.get_or_insert_with(AHashMap::new);
-        map.insert(name.to_string(), value.to_string());
+        map.insert(Box::from(name), Box::from(value));
     }
 }