python / python/cpython

Setting a signal handler gets multiprocessing.Pool stuck

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3.8 (EOL) stdlib topic-multiprocessing
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描述

BPO 38227
Nosy @pitrou, @wumpus
Files
  • mp-bug-python2.8.py
  • mp-signal-bug-python3.8.py
  • pool.py.patch
  • 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 = None
    closed_at = None
    created_at = <Date 2019-09-19.21:41:35.764>
    labels = ['3.8', 'library']
    title = 'Setting a signal handler gets multiprocessing.Pool stuck'
    updated_at = <Date 2020-07-19.17:38:12.599>
    user = 'https://bugs.python.org/ionelmc'
    

    bugs.python.org fields:

    activity = <Date 2020-07-19.17:38:12.599>
    actor = 'wumpus'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2019-09-19.21:41:35.764>
    creator = 'ionelmc'
    dependencies = []
    files = ['48615', '49130', '49131']
    hgrepos = []
    issue_num = 38227
    keywords = ['patch']
    message_count = 6.0
    messages = ['352815', '353938', '353947', '368233', '368234', '368237']
    nosy_count = 4.0
    nosy_names = ['pitrou', 'ionelmc', 'wumpus', 'mapozyan']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = None
    url = 'https://bugs.python.org/issue38227'
    versions = ['Python 3.8']
    

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    4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

    调研方向

    先从复现文件 mp-bug-python2.8.py 和 mp-signal-bug-python3.8.py 开始,然后检查 pool.py.patch 以了解建议的方向。复现 multiprocessing.Pool 卡住的行为,并验证在设置信号处理程序后 pool 不再挂起。

    由索引模型根据 Issue 内容生成。

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    3-5 天
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