1 files changed, 54 insertions, 0 deletions
diff --git a/library/alloc/benches/vec_deque.rs b/library/alloc/benches/vec_deque.rs
new file mode 100644
index 00000000000..bf2dffd1e93
--- /dev/null
+++ b/library/alloc/benches/vec_deque.rs
@@ -0,0 +1,54 @@
+use std::collections::VecDeque;
+use test::{black_box, Bencher};
+
+#[bench]
+fn bench_new(b: &mut Bencher) {
+    b.iter(|| {
+        let ring: VecDeque<i32> = VecDeque::new();
+        black_box(ring);
+    })
+}
+
+#[bench]
+fn bench_grow_1025(b: &mut Bencher) {
+    b.iter(|| {
+        let mut deq = VecDeque::new();
+        for i in 0..1025 {
+            deq.push_front(i);
+        }
+        black_box(deq);
+    })
+}
+
+#[bench]
+fn bench_iter_1000(b: &mut Bencher) {
+    let ring: VecDeque<_> = (0..1000).collect();
+
+    b.iter(|| {
+        let mut sum = 0;
+        for &i in &ring {
+            sum += i;
+        }
+        black_box(sum);
+    })
+}
+
+#[bench]
+fn bench_mut_iter_1000(b: &mut Bencher) {
+    let mut ring: VecDeque<_> = (0..1000).collect();
+
+    b.iter(|| {
+        let mut sum = 0;
+        for i in &mut ring {
+            sum += *i;
+        }
+        black_box(sum);
+    })
+}
+
+#[bench]
+fn bench_try_fold(b: &mut Bencher) {
+    let ring: VecDeque<_> = (0..1000).collect();
+
+    b.iter(|| black_box(ring.iter().try_fold(0, |a, b| Some(a + b))))
+}