githubmirror/node

benchmark/ffi/buffer-first-byte-direct.js

30 строк648 B

Paolo Insogna

ffi: add experimental fast FFI call API for AArch64 and x86_64

18 июн 2026, 11:11

18 июн 2026, 11:11f52cf5e

'use strict';

const common = require('../common.js');
const ffi = require('node:ffi');
const { libraryPath, ensureFixtureLibrary } = require('./common.js');

const bench = common.createBenchmark(main, {
  n: [1e7],
}, {
  flags: ['--experimental-ffi'],
});

ensureFixtureLibrary();

const { lib, functions } = ffi.dlopen(libraryPath, {
  first_byte: { return: 'u8', arguments: ['pointer'] },
});

const fn = functions.first_byte;
const bytes = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
const pointer = ffi.getRawPointer(bytes);

function main({ n }) {
  bench.start();
  for (let i = 0; i < n; ++i)
    fn(pointer);
  bench.end(n);

  lib.close();
}