From de21c477c5789bf1046bca40a8d11d0eb4bd319b Mon Sep 17 00:00:00 2001 From: Benjamin Peterson Date: Wed, 12 Sep 2018 13:48:03 -0700 Subject: [PATCH] closes bpo-34004: Skip lock interruption tests on musl. (GH-9224) Returning EINTR from pthread semaphore or lock acquisition is an optional POSIX feature. musl does not provide this feature, so some threadsignal tests fail when Python is built against it. There's no good way to test for musl, so we skip if we're on Linux and not using glibc pthreads. Also, hedge in the threading documentation about when we can provide interrupts from lock acquisition. (cherry picked from commit 5b10d5111d7a855297654af9045f8907b7d3dd08) Co-authored-by: Benjamin Peterson --- Doc/library/threading.rst | 3 ++- Lib/test/test_threadsignals.py | 8 ++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst index 26e6a35bfba254..063d2c06636626 100644 --- a/Doc/library/threading.rst +++ b/Doc/library/threading.rst @@ -400,7 +400,8 @@ All methods are executed atomically. The *timeout* parameter is new. .. versionchanged:: 3.2 - Lock acquires can now be interrupted by signals on POSIX. + Lock acquisition can now be interrupted by signals on POSIX if the + underlying threading implementation supports it. .. method:: release() diff --git a/Lib/test/test_threadsignals.py b/Lib/test/test_threadsignals.py index 99b60cd9e6b18e..9083e419d1d535 100644 --- a/Lib/test/test_threadsignals.py +++ b/Lib/test/test_threadsignals.py @@ -78,6 +78,10 @@ def alarm_interrupt(self, sig, frame): @unittest.skipIf(USING_PTHREAD_COND, 'POSIX condition variables cannot be interrupted') + @unittest.skipIf(sys.platform.startswith('linux') and + not sys.thread_info.version, + 'Issue 34004: musl does not allow interruption of locks ' + 'by signals.') # Issue #20564: sem_timedwait() cannot be interrupted on OpenBSD @unittest.skipIf(sys.platform.startswith('openbsd'), 'lock cannot be interrupted on OpenBSD') @@ -105,6 +109,10 @@ def test_lock_acquire_interruption(self): @unittest.skipIf(USING_PTHREAD_COND, 'POSIX condition variables cannot be interrupted') + @unittest.skipIf(sys.platform.startswith('linux') and + not sys.thread_info.version, + 'Issue 34004: musl does not allow interruption of locks ' + 'by signals.') # Issue #20564: sem_timedwait() cannot be interrupted on OpenBSD @unittest.skipIf(sys.platform.startswith('openbsd'), 'lock cannot be interrupted on OpenBSD')