---

yaml
---
r: 23071
b: refs/heads/master
c: c5fbff0
h: refs/heads/master
i:
  23069: ef90fd6
  23067: a8f2574
  23063: 6e6b4ad
  23055: 4ef8fb9
  23039: 9194f5b
v: v3

Author: eholk

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: bc6ba6b09174fdd1feaee1ce011572ba6eb1986a
+refs/heads/master: c5fbff01ce2b3e2d3020182891d4a22b8958f7f3
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be

trunk/src/libcore/pipes.rs

@@ -395,6 +395,20 @@ fn try_recv<T: send, Tbuffer: send>(-p: recv_packet_buffered<T, Tbuffer>)
 {
     let p_ = p.unwrap();
     let p = unsafe { &*p_ };
+
+    // optimistic path
+    match p.header.state {
+      full => {
+        let mut payload = none;
+        payload <-> p.payload;
+        p.header.state = empty;
+        return some(option::unwrap(payload))
+      },
+      terminated => return none,
+      _ => {}
+    }
+
+    // regular path
     let this = rustrt::rust_get_task();
     rustrt::task_clear_event_reject(this);
     rustrt::rust_task_ref(this);