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bpo-38377: multiprocessing.SemLock requires working /dev/shm on Linux. #19073

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bpo-38377: multiprocessing.SemLock requires working /dev/shm on Linux. #19073

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7547cc6
_multiprocessing.SemLock requires working /dev/shm on Linux.
mcepl Oct 5, 2019
f516474
Rewrite according to the review on the upstream pull request.
mcepl Mar 19, 2020
dcd12bf
Use correct Sphinx role for the Python method.
mcepl Jun 16, 2020
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3 changes: 2 additions & 1 deletion Lib/test/test_asyncio/test_events.py
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Expand Up @@ -2671,7 +2671,8 @@ def tearDown(self):
asyncio.get_event_loop = self.get_event_loop_saved

if sys.platform != 'win32':

@unittest.skipIf(os.environ.get('PYTHON_NO_DEV_SHM') == '1',
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nit-pick, you should also check sys.flags.ignore_environment here.

"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
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5 changes: 5 additions & 0 deletions Misc/NEWS.d/next/Tests/2019-10-05-15-50-24.bpo-38377.gKfVDt.rst
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@@ -0,0 +1,5 @@
Add the environment variable :data:`PYTHON_NO_DEV_SHM`,
which when set to 1, makes the Python skip tests depending
on :data:`/dev/shm` interface, which are missing in building
environments of some Linux distributions. Currently skipping
:py:meth:`test_get_event_loop_new_process`.