resource tracker destroys shared memory segments when other processes should still have valid access

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#82,300 36 comments 14 reactions 1 assignee View on GitHub

@applio is already working on this.

Since Sep 11, 2019.

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This issue has not been assessed yet.

Description

docs stdlib topic-multiprocessing type-bug
BPO 38119
Nosy @pitrou, @applio, @pablogsal, @maggyero, @vinay0410, @JSmith-BitFlipper, @keven425, @TKaluza
PRs
  • python/cpython#15989
  • python/cpython#21516
  • python/cpython#23174
    		•
    Files
  • mprt_monkeypatch.py
    		•

    Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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    GitHub fields:

    assignee = 'https://github.com/applio'
closed_at = None
created_at = <Date 2019-09-11.15:58:26.817>
labels = ['3.8', 'type-bug', 'library', '3.9', '3.10']
title = 'resource tracker destroys shared memory segments when other processes should still have valid access'
updated_at = <Date 2022-02-10.20:53:56.777>
user = 'https://github.com/applio'

    bugs.python.org fields:

    activity = <Date 2022-02-10.20:53:56.777>
actor = 'maggyero'
assignee = 'davin'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-09-11.15:58:26.817>
creator = 'davin'
dependencies = []
files = ['49859']
hgrepos = []
issue_num = 38119
keywords = ['patch']
message_count = 14.0
messages = ['351960', '352050', '374434', '374939', '374944', '374951', '374954', '374956', '374958', '374974', '387606', '388287', '390198', '412440']
nosy_count = 12.0
nosy_names = ['pitrou', 'steve.newcomb', 'turicas', 'davin', 'pablogsal', 'maggyero', 'vinay0410', 'damian.barabonkov', 'keven425', 'davfelsen', 'jdogzz-g5', 'timka']
pr_nums = ['15989', '21516', '23174']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue38119'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

    TODO list:

    • Add a track=True parameter to SharedMemory (#110778 did this) so it can be disabled by the user.
    • It still needs covering in the What's New in 3.13 documentation.
    • Verify and make other documentation improvements as necessary as alluded by @ambv below in https://github.com/python/cpython/issues/82300#issuecomment-1336166761 - It sounded like we've got docs implying that resources outlive the process by default which was not what the implementation ever did.
    Linked PRs
    • gh-110778
    Dominant language
    Python
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    Merged PRs (30d)
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