---

yaml
---
r: 20963
b: refs/heads/snap-stage3
c: c5fbff0
h: refs/heads/master
i:
  20961: e865bc1
  20959: 2b74fd1
v: v3

Author: eholk

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: e430a699f2c60890d9b86069fd0c68a70ece7120
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: bc6ba6b09174fdd1feaee1ce011572ba6eb1986a
+refs/heads/snap-stage3: c5fbff01ce2b3e2d3020182891d4a22b8958f7f3
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/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);