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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"select.poll is not thread safe","articleBody":"BPO | [8865](https://bugs.python.org/issue8865)\n--- | :---\nNosy | @gpshead, @pitrou, @vstinner, @asvetlov, @serhiy-storchaka\nFiles | \u003cli\u003e[select_threads.py](https://bugs.python.org/file17510/select_threads.py \"Uploaded as text/plain at 2010-06-01.06:35:18 by apexo\"): python2 script that demonstrates the problem\u003c/li\u003e\u003cli\u003e[concurrent_poll_and_register.py](https://bugs.python.org/file17511/concurrent_poll_and_register.py \"Uploaded as text/plain at 2010-06-01.07:09:25 by apexo\"): python2 script to demonstrate memory corruption issue\u003c/li\u003e\u003cli\u003e[select.patch](https://bugs.python.org/file17675/select.patch \"Uploaded as text/plain at 2010-06-15.10:21:24 by apexo\"): a patch\u003c/li\u003e\u003cli\u003e[select_concurrent_poll.patch](https://bugs.python.org/file27961/select_concurrent_poll.patch \"Uploaded as text/plain at 2012-11-11.19:48:09 by @serhiy-storchaka\"): Updated to 2.7 for review patch\u003c/li\u003e\u003cli\u003e[select_concurrent_poll.patch](https://bugs.python.org/file27963/select_concurrent_poll.patch \"Uploaded as text/plain at 2012-11-11.21:50:30 by @serhiy-storchaka\")\u003c/li\u003e\u003cli\u003e[issue8865-poll-multithread-gps01.diff](https://bugs.python.org/file27964/issue8865-poll-multithread-gps01.diff \"Uploaded as text/plain at 2012-11-11.21:51:04 by @gpshead\"): updated, against 3.2\u003c/li\u003e\u003cli\u003e[issue8865_v2.diff](https://bugs.python.org/file27967/issue8865_v2.diff \"Uploaded as text/plain at 2012-11-12.09:22:09 by apexo\"): forbid concurrent poll() invocation\u003c/li\u003e\u003cli\u003e[issue8865_v3.diff](https://bugs.python.org/file27968/issue8865_v3.diff \"Uploaded as text/plain at 2012-11-12.10:02:00 by apexo\"): RuntimeError instead of TypeError\u003c/li\u003e\u003cli\u003e[test.py](https://bugs.python.org/file28687/test.py \"Uploaded as text/plain at 2013-01-11.09:00:32 by neologix\"): crasher\u003c/li\u003e\u003cli\u003e[issue8865_test.patch](https://bugs.python.org/file28855/issue8865_test.patch \"Uploaded as text/plain at 2013-01-26.18:15:18 by @serhiy-storchaka\")\u003c/li\u003e\n\n\u003csup\u003e*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*\u003c/sup\u003e\n\n\u003cdetails\u003e\u003csummary\u003eShow more details\u003c/summary\u003e\u003cp\u003e\n\nGitHub fields:\n```python\nassignee = 'https://github.com/serhiy-storchaka'\nclosed_at = \u003cDate 2013-08-20.18:23:29.244\u003e\ncreated_at = \u003cDate 2010-05-31.22:20:13.881\u003e\nlabels = ['library', 'type-crash']\ntitle = 'select.poll is not thread safe'\nupdated_at = \u003cDate 2013-08-20.18:23:29.243\u003e\nuser = 'https://bugs.python.org/apexo'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2013-08-20.18:23:29.243\u003e\nactor = 'serhiy.storchaka'\nassignee = 'serhiy.storchaka'\nclosed = True\nclosed_date = \u003cDate 2013-08-20.18:23:29.244\u003e\ncloser = 'serhiy.storchaka'\ncomponents = ['Library (Lib)']\ncreation = \u003cDate 2010-05-31.22:20:13.881\u003e\ncreator = 'apexo'\ndependencies = []\nfiles = ['17510', '17511', '17675', '27961', '27963', '27964', '27967', '27968', '28687', '28855']\nhgrepos = []\nissue_num = 8865\nkeywords = ['patch']\nmessage_count = 31.0\nmessages = ['106815', '106816', '106827', '106829', '107863', '175387', '175389', '175390', '175394', '175395', '175397', '175400', '175409', '175429', '175431', '175432', '175501', '175525', '176894', '176895', '176969', '176998', '179657', '179659', '180696', '181822', '181823', '186736', '194334', '195705', '195707']\nnosy_count = 9.0\nnosy_names = ['gregory.p.smith', 'exarkun', 'pitrou', 'vstinner', 'asvetlov', 'neologix', 'apexo', 'python-dev', 'serhiy.storchaka']\npr_nums = []\npriority = 'normal'\nresolution = 'fixed'\nstage = 'resolved'\nstatus = 'closed'\nsuperseder = None\ntype = 'crash'\nurl = 'https://bugs.python.org/issue8865'\nversions = ['Python 2.7', 'Python 3.3', 'Python 3.4']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/apexo","@type":"Person","name":"apexo"},"datePublished":"2010-05-31T22:20:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":31},"url":"https://github.com/53111/cpython/issues/53111"}