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bpo-38377 _multiprocessing.SemLock requires working /dev/shm on Linux. #16593

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mcepl wants to merge 4 commits into from
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bpo-38377 _multiprocessing.SemLock requires working /dev/shm on Linux. #16593

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bdd1805
_multiprocessing.SemLock requires working /dev/shm on Linux.
mcepl Oct 5, 2019
68e00c9
Make sure /dev/shm exists at all
mcepl Oct 5, 2019
1fc7af6
Add NEWS.d item
mcepl Oct 5, 2019
89d900d
Fix typo in the command: exist -> exists.
mcepl Oct 8, 2019
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4 changes: 3 additions & 1 deletion Lib/test/test_asyncio/test_events.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
import ssl
except ImportError:
ssl = None
import stat
import subprocess
import sys
import threading
Expand Down Expand Up @@ -2652,7 +2653,8 @@ def tearDown(self):
asyncio.get_event_loop = self.get_event_loop_saved

if sys.platform != 'win32':

@unittest.skipUnless(os.path.exists("/dev/shm") and stat.S_IMODE(os.stat('/dev/shm').st_mode) >= 0o777,
"Doesn't work without /dev/shm.")
def test_get_event_loop_new_process(self):
# Issue bpo-32126: The multiprocessing module used by
# ProcessPoolExecutor is not functional when the
Expand Down
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Tests/2019-10-05-15-50-24.bpo-38377.gKfVDt.rst
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@@ -0,0 +1,2 @@
Skip test_get_event_loop_new_process on systems which don’t provide it
(e.g., building environments of some Linux distributions).