replace hashbrown with std hashmap

Cargo.toml

@@ -87,7 +87,7 @@ bytes = "0.4"
 derive_more = "0.99.2"
 encoding_rs = "0.8"
 futures = "0.3.1"
-hashbrown = "0.6.3"
+fxhash = "0.2.1"
 log = "0.4"
 mime = "0.3"
 net2 = "0.2.33"

actix-http/Cargo.toml

@@ -64,7 +64,7 @@ derive_more = "0.99.2"
 either = "1.5.2"
 encoding_rs = "0.8"
 futures = "0.3.1"
-hashbrown = "0.6.3"
+fxhash = "0.2.1"
 h2 = "0.2.0-alpha.3"
 http = "0.1.17"
 httparse = "1.3"

actix-http/src/client/pool.rs

@@ -12,8 +12,8 @@ use actix_service::Service;
 use actix_utils::{oneshot, task::LocalWaker};
 use bytes::Bytes;
 use futures::future::{poll_fn, FutureExt, LocalBoxFuture};
+use fxhash::FxHashMap;
 use h2::client::{handshake, Connection, SendRequest};
-use hashbrown::HashMap;
 use http::uri::Authority;
 use indexmap::IndexSet;
 use slab::Slab;
@@ -66,7 +66,7 @@ where
                 acquired: 0,
                 waiters: Slab::new(),
                 waiters_queue: IndexSet::new(),
-                available: HashMap::new(),
+                available: FxHashMap::default(),
                 waker: LocalWaker::new(),
             })),
         )
@@ -259,7 +259,7 @@ pub(crate) struct Inner<Io> {
     disconnect_timeout: Option<Duration>,
     limit: usize,
     acquired: usize,
-    available: HashMap<Key, VecDeque<AvailableConnection<Io>>>,
+    available: FxHashMap<Key, VecDeque<AvailableConnection<Io>>>,
     waiters: Slab<
         Option<(
             Connect,

actix-http/src/extensions.rs

@@ -1,12 +1,12 @@
 use std::any::{Any, TypeId};
 use std::fmt;
 
-use hashbrown::HashMap;
+use fxhash::FxHashMap;
 
 #[derive(Default)]
 /// A type map of request extensions.
 pub struct Extensions {
-    map: HashMap<TypeId, Box<dyn Any>>,
+    map: FxHashMap<TypeId, Box<dyn Any>>,
 }
 
 impl Extensions {
@@ -14,7 +14,7 @@ impl Extensions {
     #[inline]
     pub fn new() -> Extensions {
         Extensions {
-            map: HashMap::default(),
+            map: FxHashMap::default(),
         }
     }
 

actix-http/src/header/map.rs

@@ -1,6 +1,7 @@
+use std::collections::hash_map::{self, Entry};
+
 use either::Either;
-use hashbrown::hash_map::{self, Entry};
+use fxhash::FxHashMap;
-use hashbrown::HashMap;
 use http::header::{HeaderName, HeaderValue};
 use http::HttpTryFrom;
 
@@ -11,7 +12,7 @@ use http::HttpTryFrom;
 /// [`HeaderName`]: struct.HeaderName.html
 #[derive(Debug, Clone)]
 pub struct HeaderMap {
-    pub(crate) inner: HashMap<HeaderName, Value>,
+    pub(crate) inner: FxHashMap<HeaderName, Value>,
 }
 
 #[derive(Debug, Clone)]
@@ -56,7 +57,7 @@ impl HeaderMap {
     /// allocate.
     pub fn new() -> Self {
         HeaderMap {
-            inner: HashMap::new(),
+            inner: FxHashMap::default(),
         }
     }
 
@@ -70,7 +71,7 @@ impl HeaderMap {
     /// More capacity than requested may be allocated.
     pub fn with_capacity(capacity: usize) -> HeaderMap {
         HeaderMap {
-            inner: HashMap::with_capacity(capacity),
+            inner: FxHashMap::with_capacity_and_hasher(capacity, Default::default()),
         }
     }
 

actix-session/Cargo.toml

@@ -29,7 +29,6 @@ actix-service = "1.0.0-alpha.2"
 bytes = "0.4"
 derive_more = "0.99.2"
 futures = "0.3.1"
-hashbrown = "0.6.3"
 serde = "1.0"
 serde_json = "1.0"
 time = "0.1.42"

actix-session/src/lib.rs

@@ -43,12 +43,12 @@
 //! }
 //! ```
 use std::cell::RefCell;
+use std::collections::HashMap;
 use std::rc::Rc;
 
 use actix_web::dev::{Extensions, Payload, ServiceRequest, ServiceResponse};
 use actix_web::{Error, FromRequest, HttpMessage, HttpRequest};
 use futures::future::{ok, Ready};
-use hashbrown::HashMap;
 use serde::de::DeserializeOwned;
 use serde::Serialize;
 use serde_json;

awc/Cargo.toml

@@ -72,5 +72,4 @@ actix-server = { version = "1.0.0-alpha.2" }
 brotli2 = { version="0.3.2" }
 flate2 = { version="1.0.2" }
 env_logger = "0.6"
-rand = "0.7"
 webpki = { version = "0.21" }

src/middleware/errhandlers.rs

@@ -4,7 +4,7 @@ use std::task::{Context, Poll};
 
 use actix_service::{Service, Transform};
 use futures::future::{ok, FutureExt, LocalBoxFuture, Ready};
-use hashbrown::HashMap;
+use fxhash::FxHashMap;
 
 use crate::dev::{ServiceRequest, ServiceResponse};
 use crate::error::{Error, Result};
@@ -52,13 +52,13 @@ type ErrorHandler<B> = dyn Fn(ServiceResponse<B>) -> Result<ErrorHandlerResponse
 /// # }
 /// ```
 pub struct ErrorHandlers<B> {
-    handlers: Rc<HashMap<StatusCode, Box<ErrorHandler<B>>>>,
+    handlers: Rc<FxHashMap<StatusCode, Box<ErrorHandler<B>>>>,
 }
 
 impl<B> Default for ErrorHandlers<B> {
     fn default() -> Self {
         ErrorHandlers {
-            handlers: Rc::new(HashMap::new()),
+            handlers: Rc::new(FxHashMap::default()),
         }
     }
 }
@@ -105,7 +105,7 @@ where
 #[doc(hidden)]
 pub struct ErrorHandlersMiddleware<S, B> {
     service: S,
-    handlers: Rc<HashMap<StatusCode, Box<ErrorHandler<B>>>>,
+    handlers: Rc<FxHashMap<StatusCode, Box<ErrorHandler<B>>>>,
 }
 
 impl<S, B> Service for ErrorHandlersMiddleware<S, B>

src/rmap.rs

@@ -2,7 +2,7 @@ use std::cell::RefCell;
 use std::rc::Rc;
 
 use actix_router::ResourceDef;
-use hashbrown::HashMap;
+use fxhash::FxHashMap;
 use url::Url;
 
 use crate::error::UrlGenerationError;
@@ -12,7 +12,7 @@ use crate::request::HttpRequest;
 pub struct ResourceMap {
     root: ResourceDef,
     parent: RefCell<Option<Rc<ResourceMap>>>,
-    named: HashMap<String, ResourceDef>,
+    named: FxHashMap<String, ResourceDef>,
     patterns: Vec<(ResourceDef, Option<Rc<ResourceMap>>)>,
 }
 
@@ -21,7 +21,7 @@ impl ResourceMap {
         ResourceMap {
             root,
             parent: RefCell::new(None),
-            named: HashMap::new(),
+            named: FxHashMap::default(),
             patterns: Vec::new(),
         }
     }