var common = require('../common.js'); var path = require('path'); var v8 = require('v8'); var bench = common.createBenchmark(main, { type: ['win32', 'posix'], n: [1e6], }); function main(conf) { var n = +conf.n; var p = path[conf.type]; // Force optimization before starting the benchmark p.dirname('/foo/bar/baz/asdf/quux'); v8.setFlagsFromString('--allow_natives_syntax'); eval('%OptimizeFunctionOnNextCall(p.dirname)'); p.dirname('/foo/bar/baz/asdf/quux'); bench.start(); for (var i = 0; i < n; i++) { p.dirname('/foo/bar/baz/asdf/quux'); } bench.end(n); }