[issue19575] subprocess.Popen with multiple threads: Redirected stdout/stderr files still open after process close

[Bernt Røskar Brenna]

Bernt Røskar Brenna added the comment:

Increasing max_workers to 5 and running 20 tasks highlighs the 3.3-3.4 difference (code in attached file testscript4.py):

Version: 3.4.0a4 (v3.4.0a4:e245b0d7209b, Oct 20 2013, 19:23:45) [MSC v.1600 32 b
it (Intel)]
Platform: Windows-XP-5.1.2600-SP3
Tasks: 20

task_type                 #threads   result
subprocess_redirfile      5          4 errors (of 20)
subprocess_redirfile      1          OK
subprocess_devnull        5          OK
subprocess_devnull        1          OK
subprocess_noredirect     5          OK
subprocess_noredirect     1          OK
nosubprocess              5          OK
nosubprocess              1          OK



Version: 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (
Intel)]
Platform: Windows-XP-5.1.2600-SP3
Tasks: 20

task_type                 #threads   result
subprocess_redirfile      5          18 errors (of 20)
subprocess_redirfile      1          OK
subprocess_devnull        5          19 errors (of 20)
subprocess_devnull        1          OK
subprocess_noredirect     5          OK
subprocess_noredirect     1          OK
nosubprocess              5          OK
nosubprocess              1          OK

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Added file: http://bugs.python.org/file32685/testscript4.py

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