From 604ebfbf6f47acb0128f00d15ddd8f454988eebc Mon Sep 17 00:00:00 2001
From: Sean McArthur <sean@seanmonstar.com>
Date: Wed, 25 Apr 2018 16:40:34 -0700
Subject: [PATCH] perf(client): reduce an allocation per http2 connection

---
 Cargo.toml             | 2 +-
 src/client/dispatch.rs | 8 +++-----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index f3e47952..b263e340 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -37,7 +37,7 @@ tokio-executor = { version = "0.1.0", optional = true }
 tokio-io = "0.1"
 tokio-reactor = { version = "0.1", optional = true }
 tokio-tcp = { version = "0.1", optional = true }
-want = "0.0.3"
+want = "0.0.4"
 
 [dev-dependencies]
 num_cpus = "1.0"
diff --git a/src/client/dispatch.rs b/src/client/dispatch.rs
index cdcd8427..f8956d40 100644
--- a/src/client/dispatch.rs
+++ b/src/client/dispatch.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use futures::{Async, Poll, Stream};
 use futures::sync::{mpsc, oneshot};
 use want;
@@ -47,8 +45,8 @@ pub struct Sender<T, U> {
 /// Cannot poll the Giver, but can still use it to determine if the Receiver
 /// has been dropped. However, this version can be cloned.
 pub struct UnboundedSender<T, U> {
-    // Only used for `is_closed`, since mpsc::UnboundedSender cannot be checked.
-    giver: Arc<want::Giver>,
+    /// Only used for `is_closed`, since mpsc::UnboundedSender cannot be checked.
+    giver: want::SharedGiver,
     inner: mpsc::UnboundedSender<Envelope<T, U>>,
 }
 
@@ -101,7 +99,7 @@ impl<T, U> Sender<T, U> {
 
     pub fn unbound(self) -> UnboundedSender<T, U> {
         UnboundedSender {
-            giver: Arc::new(self.giver),
+            giver: self.giver.shared(),
             inner: self.inner,
         }
     }