From da5cb65f3e9cc02523e2f0877d1c08fa635d8af9 Mon Sep 17 00:00:00 2001
From: Igor Nikolaev <igor.nikolaev@nikisoft.ru>
Date: Sun, 20 Oct 2024 21:23:42 +0300
Subject: [PATCH 1/2] Add thread name prefix to the default thread pool
 executor

---
 tests/test_base.py | 15 +++++++++++++++
 uvloop/loop.pyx    |  2 +-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/tests/test_base.py b/tests/test_base.py
index 86bbd1d0..8e6fbe27 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -869,6 +869,21 @@ def test_loop_call_later_handle_when_after_fired(self):
         self.loop.run_until_complete(fut)
         self.assertEqual(handle.when(), when)
 
+    def test_thread_name_prefix_in_default_executor(self):
+        called = []
+
+        def cb():
+            called.append(threading.current_thread().name)
+
+        async def runner():
+            await self.loop.run_in_executor(None, cb)
+
+        self.loop.run_until_complete(runner())
+
+        self.assertEqual(len(called), 1)
+        self.assertTrue(called[0] is not None)
+        self.assertTrue(called[0].startswith("uvloop"))
+
 
 class TestBaseAIO(_TestBase, AIOTestCase):
     pass
diff --git a/uvloop/loop.pyx b/uvloop/loop.pyx
index f9a5a239..d6e18709 100644
--- a/uvloop/loop.pyx
+++ b/uvloop/loop.pyx
@@ -2741,7 +2741,7 @@ cdef class Loop:
             # Only check when the default executor is being used
             self._check_default_executor()
             if executor is None:
-                executor = cc_ThreadPoolExecutor()
+                executor = cc_ThreadPoolExecutor(thread_name_prefix='uvloop')
                 self._default_executor = executor
 
         return aio_wrap_future(executor.submit(func, *args), loop=self)

From 6e48794b031775f4726d0f9c1f21b5f096bff10f Mon Sep 17 00:00:00 2001
From: Fantix King <fantix.king@gmail.com>
Date: Mon, 4 May 2026 11:13:20 -0400
Subject: [PATCH 2/2] Move the test to cover asyncio too

---
 tests/test_base.py | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/tests/test_base.py b/tests/test_base.py
index ceff31d4..69a70677 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -799,6 +799,26 @@ async def main():
         elif result.returncode != 0:
             self.fail(result.stdout.strip())
 
+    def test_thread_name_prefix_in_default_executor(self):
+        if self.implementation == "asyncio" and sys.version_info < (3, 9):
+            raise unittest.SkipTest(
+                "thread_name_prefix was added in CPython 3.9"
+            )
+
+        called = []
+
+        def cb():
+            called.append(threading.current_thread().name)
+
+        async def runner():
+            await self.loop.run_in_executor(None, cb)
+
+        self.loop.run_until_complete(runner())
+
+        self.assertEqual(len(called), 1)
+        self.assertTrue(called[0] is not None)
+        self.assertTrue(called[0].startswith(self.implementation))
+
 
 class TestBaseUV(_TestBase, UVTestCase):
 
@@ -938,21 +958,6 @@ def test_loop_call_later_handle_when_after_fired(self):
         self.loop.run_until_complete(fut)
         self.assertEqual(handle.when(), when)
 
-    def test_thread_name_prefix_in_default_executor(self):
-        called = []
-
-        def cb():
-            called.append(threading.current_thread().name)
-
-        async def runner():
-            await self.loop.run_in_executor(None, cb)
-
-        self.loop.run_until_complete(runner())
-
-        self.assertEqual(len(called), 1)
-        self.assertTrue(called[0] is not None)
-        self.assertTrue(called[0].startswith("uvloop"))
-
 
 class TestBaseAIO(_TestBase, AIOTestCase):
     pass