Move benchmarks to Rust (#7134)

All benchmarks are done in Rust and can be invoked with
`cargo bench`.

Currently this has it's own "harness" that behaves like
`./tools/benchmark.py` did.
Because of this tests inside `cli/bench` are currently not run.
This should be switched to the language provided harness
once the `#[bench]` attribute has been stabilized.

1 files changed, 29 insertions, 0 deletions

diff --git a/cli/bench/deno_tcp.ts b/cli/bench/deno_tcp.ts
new file mode 100644
index 000000000..a204e7bfb
--- /dev/null
+++ b/cli/bench/deno_tcp.ts
@@ -0,0 +1,29 @@
+// Used for benchmarking Deno's networking.
+// TODO Replace this with a real HTTP server once
+// https://github.com/denoland/deno/issues/726 is completed.
+// Note: this is a keep-alive server.
+const addr = Deno.args[0] || "127.0.0.1:4500";
+const [hostname, port] = addr.split(":");
+const listener = Deno.listen({ hostname, port: Number(port) });
+const response = new TextEncoder().encode(
+  "HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n",
+);
+async function handle(conn: Deno.Conn): Promise<void> {
+  const buffer = new Uint8Array(1024);
+  try {
+    while (true) {
+      const r = await conn.read(buffer);
+      if (r === null) {
+        break;
+      }
+      await conn.write(response);
+    }
+  } finally {
+    conn.close();
+  }
+}
+
+console.log("Listening on", addr);
+for await (const conn of listener) {
+  handle(conn);
+}