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denoland-deno/cli/bench/fs/run.mjs

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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
let total = 5;
let current = "";
const values = {};
const runtime = typeof Deno !== "undefined" ? "deno" : "node";
function bench(fun, count = 100000) {
if (total === 5) console.log(fun.toString());
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 ${rate}`);
values[current] = values[current] || [];
values[current].push(rate);
if (--total) bench(fun, count);
else total = 5;
}
let fs;
if (runtime === "node") {
fs = await import("fs");
}
const getFunction = runtime === "deno"
? (name) => {
current = name;
return Deno[name];
}
: (name) => {
current = name;
return fs[name];
};
const writeFileSync = getFunction("writeFileSync");
writeFileSync("test", new Uint8Array(1024 * 1024), { truncate: true });
const copyFileSync = getFunction("copyFileSync");
bench(() => copyFileSync("test", "test2"), 10000);
const truncateSync = getFunction("truncateSync");
bench(() => truncateSync("test", 0));
const lstatSync = getFunction("lstatSync");
bench(() => lstatSync("test"));
const { uid, gid } = lstatSync("test");
const chownSync = getFunction("chownSync");
bench(() => chownSync("test", uid, gid));
const chmodSync = getFunction("chmodSync");
bench(() => chmodSync("test", 0o666));
// const cwd = getFunction("cwd");
// bench(() => cwd());
// const chdir = getFunction("chdir");
// bench(() => chdir("/"));
const readFileSync = getFunction("readFileSync");
writeFileSync("test", new Uint8Array(1024), { truncate: true });
bench(() => readFileSync("test"));
writeFileSync(new URL(`./${runtime}.json`, import.meta.url), new TextEncoder().encode(JSON.stringify(values, null, 2)), { truncate: true });