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Created on 2013-11-13 21:49 by vstinner, last changed 2022-04-11 14:57 by admin. This issue is now closed.
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| File name | Uploaded | Description | Edit | |
| PyGILState_Ensure.patch | vstinner, 2013-11-14 08:28 | review | ||
| Messages (8) | |||
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| msg202787 - (view) | Author: STINNER Victor (vstinner) *  |
Date: 2013-11-13 21:49 | |
While working on a unit test for the issue #14432, I hit a bug. My C thread got the GIL with PyGILState_Ensure(), but it was strange because the main Python thread also had the GIL... Then I saw that gil_created() returned false. The solution is to call PyEval_InitThreads() to create the GIL. I was reading "Non-Python created threads" documentation, but this section doesn't mention PyEval_InitThreads(). I don't know if it's something new in Python 3.2 with the new GIL. |
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| msg202815 - (view) | Author: Antoine Pitrou (pitrou) * |
Date: 2013-11-14 01:39 | |
Perhaps we can fix PyGILState to call PyEval_InitThreads automatically? |
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| msg202821 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-11-14 08:28 | |
> Perhaps we can fix PyGILState to call PyEval_InitThreads automatically? Yes, I had the same idea. Here is a patch to call PyEval_InitThreads() in PyGILState_Ensure() for new threads. |
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| msg205999 - (view) | Author: STINNER Victor (vstinner) * |
Date: 2013-12-13 00:35 | |
So Antoine, what do you think of the fix? |
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| msg206000 - (view) | Author: Antoine Pitrou (pitrou) * |
Date: 2013-12-13 00:36 | |
Looks good to me. |
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| msg206002 - (view) | Author: Roundup Robot (python-dev)  |
Date: 2013-12-13 00:48 | |
New changeset dc4e805ec68a by Victor Stinner in branch 'default': Close #19576: PyGILState_Ensure() now initializes threads. At startup, Python http://hg.python.org/cpython/rev/dc4e805ec68a |
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| msg217860 - (view) | Author: Jiong Du (lolynx) | Date: 2014-05-04 07:42 | |
this patch made a new issue<20891> |
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| msg257426 - (view) | Author: (tzickel) * | Date: 2016-01-03 19:08 | |
I think that the document regarding PyGILState_Ensure and PyEval_InitThreads should be clarified better, written in issue #26003 |
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