From f764c5be249e76b4da1e3f340bc02ecc9fdd9219 Mon Sep 17 00:00:00 2001
From: cjihrig <cjihrig@gmail.com>
Date: Sat, 24 Dec 2022 22:21:53 -0500
Subject: [PATCH] test_runner: use os.availableParallelism()

This commit addresses an existing TODO in the code by moving
to the new os.availableParallelism() instead of os.cpus().length.
---
 lib/internal/test_runner/test.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/internal/test_runner/test.js b/lib/internal/test_runner/test.js
index 14ddb96d1155be..b7267491d50c3f 100644
--- a/lib/internal/test_runner/test.js
+++ b/lib/internal/test_runner/test.js
@@ -53,7 +53,7 @@ const {
 } = require('internal/validators');
 const { setTimeout } = require('timers/promises');
 const { TIMEOUT_MAX } = require('internal/timers');
-const { cpus } = require('os');
+const { availableParallelism } = require('os');
 const { bigint: hrtime } = process.hrtime;
 const kCallbackAndPromisePresent = 'callbackAndPromisePresent';
 const kCancelledByParent = 'cancelledByParent';
@@ -216,8 +216,8 @@ class Test extends AsyncResource {
 
       case 'boolean':
         if (concurrency) {
-          // TODO(cjihrig): Use uv_available_parallelism() once it lands.
-          this.concurrency = parent === null ? MathMax(cpus().length - 1, 1) : Infinity;
+          this.concurrency = parent === null ?
+            MathMax(availableParallelism() - 1, 1) : Infinity;
         } else {
           this.concurrency = 1;
         }