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denoland-deno/core/examples/http_bench_json_ops.js
Divy Srivastava 02187966c1
perf(core): generate inlined wrappers for async ops (#16428)
V8's JIT can do a better job knowing the argument count and also enable
fast call path (in future).

This also lets us call async ops without `opAsync`:

```js
const { ops } = Deno.core;
await ops.op_void_async();
```

this patch: 4405286 ops/sec
main: 3508771 ops/sec
2022-10-27 19:10:48 +05:30

51 lines
1.3 KiB
JavaScript

// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
// This is not a real HTTP server. We read blindly one time into 'requestBuf',
// then write this fixed 'responseBuf'. The point of this benchmark is to
// exercise the event loop in a simple yet semi-realistic way.
Deno.core.initializeAsyncOps();
const requestBuf = new Uint8Array(64 * 1024);
const responseBuf = new Uint8Array(
"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n"
.split("")
.map((c) => c.charCodeAt(0)),
);
/** Listens on 0.0.0.0:4570, returns rid. */
function listen() {
return Deno.core.ops.op_listen();
}
/** Accepts a connection, returns rid. */
function accept(serverRid) {
return Deno.core.ops.op_accept(serverRid);
}
async function serve(rid) {
try {
while (true) {
await Deno.core.read(rid, requestBuf);
await Deno.core.writeAll(rid, responseBuf);
}
} catch (e) {
if (
!e.message.includes("Broken pipe") &&
!e.message.includes("Connection reset by peer")
) {
throw e;
}
}
Deno.core.close(rid);
}
async function main() {
const listenerRid = listen();
Deno.core.print(`http_bench_ops listening on http://127.0.0.1:4570/\n`);
while (true) {
const rid = await accept(listenerRid);
serve(rid);
}
}
main();