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Don't release the GIL if we can acquire a multiprocessing semaphore immediately #75834

@DanielColascione

Description

@DanielColascione
BPO 31653
Nosy @pitrou, @vstinner, @serhiy-storchaka, @applio
PRs
  • bpo-31653: Don't release the GIL if we can acquire a multiprocessing semaphore immediately #4078
  • bpo-31653: Remove deadcode in semlock_acquire() #4091
  • 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 = <Date 2017-10-22.11:11:08.000>
    created_at = <Date 2017-10-01.01:43:01.894>
    labels = ['extension-modules', 'easy', '3.7', 'performance']
    title = "Don't release the GIL if we can acquire a multiprocessing semaphore immediately"
    updated_at = <Date 2017-10-23.20:57:57.879>
    user = 'https://bugs.python.org/DanielColascione'

    bugs.python.org fields:

    activity = <Date 2017-10-23.20:57:57.879>
    actor = 'vstinner'
    assignee = 'none'
    closed = True
    closed_date = <Date 2017-10-22.11:11:08.000>
    closer = 'pitrou'
    components = ['Extension Modules']
    creation = <Date 2017-10-01.01:43:01.894>
    creator = 'Daniel Colascione'
    dependencies = []
    files = []
    hgrepos = []
    issue_num = 31653
    keywords = ['patch', 'easy (C)']
    message_count = 4.0
    messages = ['303441', '303449', '304742', '304840']
    nosy_count = 5.0
    nosy_names = ['pitrou', 'vstinner', 'serhiy.storchaka', 'davin', 'Daniel Colascione']
    pr_nums = ['4078', '4091']
    priority = 'normal'
    resolution = 'fixed'
    stage = 'resolved'
    status = 'closed'
    superseder = None
    type = 'performance'
    url = 'https://bugs.python.org/issue31653'
    versions = ['Python 3.7']

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