mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
9b2b8df927
Uses SeqOneByteString optimization to do zero-copy `&str` arguments in fast calls. - [x] Depends on https://github.com/denoland/rusty_v8/pull/1129 - [x] Depends on https://chromium-review.googlesource.com/c/v8/v8/+/4036884 - [x] Disable in async ops - [x] Make it work with owned `String` with an extra alloc in fast path. - [x] Support `Cow<'_, str>`. Owned for slow case, Borrowed for fast case ```rust #[op] fn op_string_len(s: &str) -> u32 { str.len() as u32 } ```
22 lines
672 B
JavaScript
22 lines
672 B
JavaScript
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
|
|
let [total, count] = typeof Deno !== "undefined"
|
|
? Deno.args
|
|
: [process.argv[2], process.argv[3]];
|
|
|
|
total = total ? parseInt(total, 0) : 50;
|
|
count = count ? parseInt(count, 10) : 10000000;
|
|
|
|
function bench(fun) {
|
|
const start = Date.now();
|
|
for (let i = 0; i < count; i++) fun();
|
|
const elapsed = Date.now() - start;
|
|
const rate = Math.floor(count / (elapsed / 1000));
|
|
console.log(`time ${elapsed} ms rate ${rate}`);
|
|
if (--total) bench(fun);
|
|
}
|
|
|
|
const encoder = new TextEncoder();
|
|
const data = "hello world";
|
|
const out = new Uint8Array(100);
|
|
|
|
bench(() => encoder.encodeInto(data, out));
|