From 09e5016f8bb07beb7d780df221febac2d2867ad0 Mon Sep 17 00:00:00 2001 From: "Miss Islington (bot)" <31488909+miss-islington@users.noreply.github.com> Date: Tue, 21 Sep 2021 11:19:48 -0700 Subject: [PATCH] bpo-45209: fix `UserWarning: resource_tracker` in test_multiprocessing (GH-28377) (cherry picked from commit f604cf1c377a7648e0686044e6e49900bfc9feef) Co-authored-by: Nikita Sobolev --- Lib/test/_test_multiprocessing.py | 7 +++++++ .../next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst | 2 ++ 2 files changed, 9 insertions(+) create mode 100644 Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py index 8ebcd0d64dfaa9..125e8906d8abce 100644 --- a/Lib/test/_test_multiprocessing.py +++ b/Lib/test/_test_multiprocessing.py @@ -4178,6 +4178,13 @@ def test_shared_memory_cleaned_after_process_termination(self): " a process was abruptly terminated.") if os.name == 'posix': + # Without this line it was raising warnings like: + # UserWarning: resource_tracker: + # There appear to be 1 leaked shared_memory + # objects to clean up at shutdown + # See: https://bugs.python.org/issue45209 + resource_tracker.unregister(f"/{name}", "shared_memory") + # A warning was emitted by the subprocess' own # resource_tracker (on Windows, shared memory segments # are released automatically by the OS). diff --git a/Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst b/Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst new file mode 100644 index 00000000000000..4c3bed0983b899 --- /dev/null +++ b/Misc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst @@ -0,0 +1,2 @@ +Fix ``UserWarning: resource_tracker`` warning in +``_test_multiprocessing._TestSharedMemory.test_shared_memory_cleaned_after_process_termination``