1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/rust/httpdate/benches/benchmarks.rs b/third_party/rust/httpdate/benches/benchmarks.rs
new file mode 100644
index 0000000000..4f82467bdb
--- /dev/null
+++ b/third_party/rust/httpdate/benches/benchmarks.rs
@@ -0,0 +1,57 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+pub fn parse_imf_fixdate(c: &mut Criterion) {
+    c.bench_function("parse_imf_fixdate", |b| {
+        b.iter(|| {
+            let d = black_box("Sun, 06 Nov 1994 08:49:37 GMT");
+            black_box(httpdate::parse_http_date(d)).unwrap();
+        })
+    });
+}
+
+pub fn parse_rfc850_date(c: &mut Criterion) {
+    c.bench_function("parse_rfc850_date", |b| {
+        b.iter(|| {
+            let d = black_box("Sunday, 06-Nov-94 08:49:37 GMT");
+            black_box(httpdate::parse_http_date(d)).unwrap();
+        })
+    });
+}
+
+pub fn parse_asctime(c: &mut Criterion) {
+    c.bench_function("parse_asctime", |b| {
+        b.iter(|| {
+            let d = black_box("Sun Nov  6 08:49:37 1994");
+            black_box(httpdate::parse_http_date(d)).unwrap();
+        })
+    });
+}
+
+struct BlackBoxWrite;
+
+impl std::fmt::Write for BlackBoxWrite {
+    fn write_str(&mut self, s: &str) -> Result<(), std::fmt::Error> {
+        black_box(s);
+        Ok(())
+    }
+}
+
+pub fn encode_date(c: &mut Criterion) {
+    c.bench_function("encode_date", |b| {
+        let d = "Wed, 21 Oct 2015 07:28:00 GMT";
+        black_box(httpdate::parse_http_date(d)).unwrap();
+        b.iter(|| {
+            use std::fmt::Write;
+            let _ = write!(BlackBoxWrite, "{}", d);
+        })
+    });
+}
+
+criterion_group!(
+    benches,
+    parse_imf_fixdate,
+    parse_rfc850_date,
+    parse_asctime,
+    encode_date
+);
+criterion_main!(benches);