benchmark: add dir and withFileTypes option readdir benchmarks

PR-URL: https://github.com/nodejs/node/pull/24125
Refs: https://github.com/v8/v8/commit/0483e9a9abe77a73632fd85b9c0cd608efa9aa0d
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Yang Guo <yangguo@chromium.org>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Refael Ackermann <refack@gmail.com>

2 files changed, 14 insertions, 7 deletions

diff --git a/benchmark/fs/bench-readdir.js b/benchmark/fs/bench-readdir.js
index a3e19e242d..0d8ed04856 100644
--- a/benchmark/fs/bench-readdir.js
+++ b/benchmark/fs/bench-readdir.js
@@ -5,16 +5,19 @@ const fs = require('fs');
 const path = require('path');
 
 const bench = common.createBenchmark(main, {
-  n: [1e4],
+  n: [10],
+  dir: [ 'lib', 'test/parallel'],
+  withFileTypes: ['true', 'false']
 });
 
-
-function main({ n }) {
+function main({ n, dir, withFileTypes }) {
+  withFileTypes = withFileTypes === 'true';
+  const fullPath = path.resolve(__dirname, '../../', dir);
   bench.start();
   (function r(cntr) {
     if (cntr-- <= 0)
       return bench.end(n);
-    fs.readdir(path.resolve(__dirname, '../../lib/'), function() {
+    fs.readdir(fullPath, { withFileTypes }, function() {
       r(cntr);
     });
   }(n));
diff --git a/benchmark/fs/bench-readdirSync.js b/benchmark/fs/bench-readdirSync.js
index ef3327163e..5d0e97399a 100644
--- a/benchmark/fs/bench-readdirSync.js
+++ b/benchmark/fs/bench-readdirSync.js
@@ -5,14 +5,18 @@ const fs = require('fs');
 const path = require('path');
 
 const bench = common.createBenchmark(main, {
-  n: [1e4],
+  n: [10],
+  dir: [ 'lib', 'test/parallel'],
+  withFileTypes: ['true', 'false']
 });
 
 
-function main({ n }) {
+function main({ n, dir, withFileTypes }) {
+  withFileTypes = withFileTypes === 'true';
+  const fullPath = path.resolve(__dirname, '../../', dir);
   bench.start();
   for (var i = 0; i < n; i++) {
-    fs.readdirSync(path.resolve(__dirname, '../../lib/'));
+    fs.readdirSync(fullPath, { withFileTypes });
   }
   bench.end(n);
 }