Optimize oneshot case

crossbeam-channel/benches/oneshot.rs

@@ -0,0 +1,33 @@
+#![feature(test)]
+
+extern crate crossbeam_channel as channel;
+extern crate test;
+
+use std::sync::mpsc;
+
+#[bench]
+fn oneshot_mpsc(b: &mut test::Bencher) {
+    b.iter(|| {
+        let (s, r) = mpsc::channel();
+        s.send(0).unwrap();
+        r.recv().unwrap();
+    });
+}
+
+#[bench]
+fn oneshot_crossbeam_bounded(b: &mut test::Bencher) {
+    b.iter(|| {
+        let (s, r) = channel::bounded(1);
+        s.send(0).unwrap();
+        r.recv().unwrap();
+    });
+}
+
+#[bench]
+fn oneshot_crossbeam_unbounded(b: &mut test::Bencher) {
+    b.iter(|| {
+        let (s, r) = channel::unbounded();
+        s.send(0).unwrap();
+        r.recv().unwrap();
+    });
+}