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asyncio: support multiprocessing (support fork)

danoreilly

BPO 22087
Nosy @gvanrossum, @pitrou, @1st1, @thehesiod, @miss-islington
PRs
  • bpo-22087: Fix Policy.get_event_loop() to detect fork #7208
  • [3.7] bpo-22087: Fix Policy.get_event_loop() to detect fork (GH-7208) #7215
  • [3.6] bpo-22087: Fix Policy.get_event_loop() to detect fork (GH-7208) #7218
  • bpo-22087: Restructure code to be more robust and safe #7226
  • Revert "bpo-22087: Fix Policy.get_event_loop() to detect fork (GH-7208)" #7232
  • Revert "bpo-22087: Fix Policy.get_event_loop() to detect fork (GH-7208)" #7233
    		•
    Files
  • test_loop.py: Test script demonstrating the issue
  • handle_mp_unix.diff: Patch that makes _UnixDefaultEventLoopPolicy create a new loop object if get_event_loop is called in a forked mp child process
  • handle-mp_unix2.patch: Use os.getpid() instead of multiprocessing. Store pid state in Policy instance rather than the Loop instance.
  • handle_mp_unix_with_test.diff: Adds a unit test to previous 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 2014-07-26.18:01:10.150>
labels = ['type-bug', 'expert-asyncio']
title = 'asyncio: support multiprocessing (support fork)'
updated_at = <Date 2018-05-30.00:56:36.541>
user = 'https://bugs.python.org/danoreilly'

    bugs.python.org fields:

    activity = <Date 2018-05-30.00:56:36.541>
actor = 'yselivanov'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['asyncio']
creation = <Date 2014-07-26.18:01:10.150>
creator = 'dan.oreilly'
dependencies = []
files = ['36117', '36118', '36119', '36134']
hgrepos = []
issue_num = 22087
keywords = ['patch']
message_count = 23.0
messages = ['224082', '224084', '224085', '224097', '224125', '224140', '224143', '224144', '224145', '226698', '235404', '235411', '288327', '297222', '297226', '297227', '297229', '318077', '318092', '318135', '318140', '318143', '318144']
nosy_count = 7.0
nosy_names = ['gvanrossum', 'pitrou', 'zmedico', 'yselivanov', 'thehesiod', 'dan.oreilly', 'miss-islington']
pr_nums = ['7208', '7215', '7218', '7226', '7232', '7233']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue22087'
versions = ['Python 3.4', 'Python 3.5', 'Python 3.6']

    Linked PRs