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bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing - #28377

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ambv merged 4 commits into
python:mainfrom
sobolevn:issue-45209
Sep 21, 2021
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bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing#28377
ambv merged 4 commits into
python:mainfrom
sobolevn:issue-45209

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@sobolevn

@sobolevnsobolevn commented Sep 15, 2021•
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@vstinner

vstinner commented Sep 16, 2021

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cc @pitrou

@pitroupitrou changed the title bpo-45209: removes UserWarning: resource_tracker in `test_multiproc…bpo-45209: fix UserWarning: resource_tracker in test_multiprocessingSep 16, 2021
pitrou
pitrou reviewed Sep 16, 2021
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Comment threadMisc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst Outdated
@sobolevn

sobolevn commented Sep 16, 2021

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All PRs right now have this problem: https://dev.azure.com/Python/cpython/_build/results?buildId=87889&view=logs&j=91c152bd-7320-5194-b252-1404e56e2478&t=c7e99cd8-4756-5292-d34b-246ff5fc615f

Another examples:

@vstinner

vstinner commented Sep 16, 2021

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Windows build error on Azure Pipelines is tracked by: https://bugs.python.org/issue45220

@sobolevn

sobolevn commented Sep 18, 2021

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Rebased, CI now passes.

vstinner
vstinner approved these changes Sep 20, 2021
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LGTM. @pitrou: Would you mind to double check this multiprocessing test fix?

I'm kind of unhappy that you have to prepend "/". SharedMemory._prepend_leading_slash does a magic dance (add/remove "/" prefix) with SharedMemory(name) constructor parameter and in SharedMemory.name property. But I don't think that it's worth it to add something just for this very specific test. We can always revisit the code later if we start to have issue on some corner cases.

Comment threadMisc/NEWS.d/next/Tests/2021-09-15-23-32-39.bpo-45209.55ntL5.rst
@sobolevn

sobolevn commented Sep 20, 2021

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I'm kind of unhappy that you have to prepend "/". SharedMemory._prepend_leading_slash does a magic dance (add/remove "/" prefix) with SharedMemory(name) constructor parameter and in SharedMemory.name property

Yes, me too. I've tried several other things like smm.name (was not producing the correct result by raising KeyError). After several attempts this was the simplest solution. And since we only run this part on posix, it should work correctly.

Thanks, @vstinner and @pitrou

@ambv

ambv commented Sep 21, 2021

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Since the slash hack is tests-only, let's have it. We can fix the fix later if we find a way to do so.

@ambv
ambv merged commit f604cf1 into python:mainSep 21, 2021
@vstinnervstinner added the needs backport to 3.10 only security fixes label Sep 21, 2021
@miss-islington

miss-islington commented Sep 21, 2021

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Thanks @sobolevn for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.10.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Sep 21, 2021
@sobolevn@miss-islington
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing (
0ce2fae
pythonGH-28377)
(cherry picked from commit f604cf1)
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
@bedevere-bot

bedevere-bot commented Sep 21, 2021

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GH-28499 is a backport of this pull request to the 3.10 branch.

@bedevere-botbedevere-bot removed the needs backport to 3.10 only security fixes label Sep 21, 2021
@miss-islington

miss-islington commented Sep 21, 2021

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Thanks @sobolevn for the PR, and @ambv for merging it 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

@bedevere-bot

bedevere-bot commented Sep 21, 2021

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GH-28500 is a backport of this pull request to the 3.9 branch.

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Sep 21, 2021
@sobolevn@miss-islington
bpo-45209: fix UserWarning: resource_tracker in test_multiprocessing (
8a513df
pythonGH-28377)
(cherry picked from commit f604cf1)
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
miss-islington added a commit that referenced this pull request Sep 21, 2021
@miss-islington@sobolevn
bpo-45209: fixUserWarning: resource_trackerin test_multiprocessing (
09e5016
GH-28377)
(cherry picked from commit f604cf1)
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
vstinner pushed a commit that referenced this pull request Sep 21, 2021
@miss-islington@sobolevn
bpo-45209: fixUserWarning: resource_trackerin test_multiprocessing (
65268ab
GH-28377) (GH-28500)
(cherry picked from commit f604cf1)
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
@vstinnervstinner mentioned this pull request Apr 10, 2022
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