test-startup-large-pages.js

'use strict';

// A sanity check: Make sure that Node.js runs correctly when running with the
// --use-largepages option.

require('../common');
const assert = require('assert');
const { spawnSync } = require('child_process');

{
  const child = spawnSync(process.execPath,
                          [ '--use-largepages=1', '-p', '42' ]);
  const stdout = child.stdout.toString().match(/\S+/g);
  assert.strictEqual(child.status, 0);
  assert.strictEqual(child.signal, null);
  assert.strictEqual(stdout.length, 1);
  assert.strictEqual(stdout[0], '42');
}

{
  const child = spawnSync(process.execPath,
                          [ '--use-largepages=3', '-p', '42' ]);
  assert.strictEqual(child.status, 9);
  assert.strictEqual(child.signal, null);
  assert.strictEqual(child.stderr.toString().match(/\S+/g).slice(1).join(' '),
                     '--use-largepages must be one of 0, 1, or 2');
}

// TODO(gabrielschulhof): Run with --use-largepages=2 and make assertions about
// the stderr, which may or may not contain a message indicating that mapping to
// large pages has failed.