From e105e551dbf072d773aaa1fd6f8cbda218c273f0 Mon Sep 17 00:00:00 2001 From: Benjamin Peterson Date: Wed, 12 Sep 2018 16:00:27 -0700 Subject: [3.6] closes bpo-34650: Check if sched_getscheduler returns ENOSYS before declaring it supported. (GH-9237) musl doesn't support the scheduler API, but declares stubs that alway return ENOSYS.. (cherry picked from commit c7042224b8a67748f125c22836862483f81a87a6) Co-authored-by: Benjamin Peterson --- Lib/test/test_posix.py | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py index a204377..2dae473 100644 --- a/Lib/test/test_posix.py +++ b/Lib/test/test_posix.py @@ -22,6 +22,18 @@ _DUMMY_SYMLINK = os.path.join(tempfile.gettempdir(), requires_32b = unittest.skipUnless(sys.maxsize < 2**32, 'test is only meaningful on 32-bit builds') +def _supports_sched(): + if not hasattr(posix, 'sched_getscheduler'): + return False + try: + posix.sched_getscheduler(0) + except OSError as e: + if e.errno == errno.ENOSYS: + return False + return True + +requires_sched = unittest.skipUnless(_supports_sched(), 'requires POSIX scheduler API') + class PosixTester(unittest.TestCase): def setUp(self): @@ -1136,7 +1148,7 @@ class PosixTester(unittest.TestCase): self.assertRaises(OSError, posix.sched_get_priority_min, -23) self.assertRaises(OSError, posix.sched_get_priority_max, -23) - @unittest.skipUnless(hasattr(posix, 'sched_setscheduler'), "can't change scheduler") + @requires_sched def test_get_and_set_scheduler_and_param(self): possible_schedulers = [sched for name, sched in posix.__dict__.items() if name.startswith("SCHED_")] -- cgit v0.12