node/benchmark/events/ee-listeners.js

22 lines
480 B
JavaScript

'use strict';
const common = require('../common.js');
const EventEmitter = require('events').EventEmitter;
const bench = common.createBenchmark(main, { n: [5e6] });
function main({ n }) {
const ee = new EventEmitter();
for (var k = 0; k < 5; k += 1) {
ee.on('dummy0', () => {});
ee.on('dummy1', () => {});
}
bench.start();
for (var i = 0; i < n; i += 1) {
const dummy = (i % 2 === 0) ? 'dummy0' : 'dummy1';
ee.listeners(dummy);
}
bench.end(n);
}