From a794a6f513d5b9f2a9e295f9481223d37a5e4d3e Mon Sep 17 00:00:00 2001
From: GalaxySnail <ylc991@163.com>
Date: Thu, 10 Feb 2022 10:28:32 +0800
Subject: [PATCH] BUG: use ThreadPoolExecutor instead of ThreadPool

Use `concurrent.futures.ThreadPoolExecutor` in distutils
instead of `multiprocessing.pool.ThreadPool`.

Fix #21026
---
 numpy/distutils/ccompiler.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/numpy/distutils/ccompiler.py b/numpy/distutils/ccompiler.py
index 16f00d8edf17..74e2c51f600c 100644
--- a/numpy/distutils/ccompiler.py
+++ b/numpy/distutils/ccompiler.py
@@ -355,10 +355,9 @@ def single_compile(args):
 
     if len(build) > 1 and jobs > 1:
         # build parallel
-        import multiprocessing.pool
-        pool = multiprocessing.pool.ThreadPool(jobs)
-        pool.map(single_compile, build_items)
-        pool.close()
+        from concurrent.futures import ThreadPoolExecutor
+        with ThreadPoolExecutor(jobs) as pool:
+            pool.map(single_compile, build_items)
     else:
         # build serial
         for o in build_items: