[Windows] multiprocessing handle leak when child process is killed during startup/unpickling

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#87,134 创建于 2021年1月19日 3 条评论 0 个 reaction 已指派 0 人在 GitHub 查看

还没有人认领这个 Issue。

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难度: 4/5
预计耗时: 3-5 天
新手友好度: 35/100

Issue 类型: 缺陷
描述清晰度: 需要澄清
活跃度: 停滞
技术栈: python
领域: backend, operating-systems

调研方向

从附带的 deadlock.py 复现程序以及 Windows multiprocessing 的 startup/unpickling 路径开始。复现子进程在启动期间被终止的情况，然后调查进程句柄是否仍保持打开状态。完成标准是：复现程序在受支持的 Python 版本上不再泄漏句柄。

由索引模型根据 Issue 内容生成。

描述

3.10 3.8 (EOL) 3.9 (EOL) OS-windows stdlib topic-multiprocessing type-bug

BPO	42968
Nosy	@pfmoore, @tjguk, @zware, @eryksun, @zooba, @dgrunwald
Files	deadlock.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 = None
closed_at = None
created_at = <Date 2021-01-19.18:24:16.409>
labels = ['type-bug', '3.8', '3.9', '3.10', 'library', 'OS-windows']
title = '[Windows] multiprocessing handle leak when child process is killed during startup/unpickling'
updated_at = <Date 2021-03-30.18:31:06.717>
user = 'https://github.com/dgrunwald'

bugs.python.org fields:

activity = <Date 2021-03-30.18:31:06.717>
actor = 'eryksun'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'Windows']
creation = <Date 2021-01-19.18:24:16.409>
creator = 'dgrunwald'
dependencies = []
files = ['49751']
hgrepos = []
issue_num = 42968
keywords = []
message_count = 3.0
messages = ['385283', '385284', '385380']
nosy_count = 6.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'eryksun', 'steve.dower', 'dgrunwald']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42968'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

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