'use strict'; var common = require('../common.js'); var querystring = require('querystring'); var v8 = require('v8'); var inputs = require('../fixtures/url-inputs.js').searchParams; var bench = common.createBenchmark(main, { type: Object.keys(inputs), n: [1e6], }); // A deopt followed by a reopt of main() can happen right when the timed loop // starts, which seems to have a noticeable effect on the benchmark results. // So we explicitly disable optimization of main() to avoid this potential // issue. v8.setFlagsFromString('--allow_natives_syntax'); eval('%NeverOptimizeFunction(main)'); function main(conf) { var type = conf.type; var n = conf.n | 0; var input = inputs[type]; var i; // Note: we do *not* use OptimizeFunctionOnNextCall() here because currently // it causes a deopt followed by a reopt, which could make its way into the // timed loop. Instead, just execute the function a "sufficient" number of // times before the timed loop to ensure the function is optimized just once. if (type === 'multicharsep') { for (i = 0; i < n; i += 1) querystring.parse(input, '&&&&&&&&&&'); bench.start(); for (i = 0; i < n; i += 1) querystring.parse(input, '&&&&&&&&&&'); bench.end(n); } else { for (i = 0; i < n; i += 1) querystring.parse(input); bench.start(); for (i = 0; i < n; i += 1) querystring.parse(input); bench.end(n); } }