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bug#36609: 27.0.50; Possible race-condition in threading implementation
From: |
Pip Cet |
Subject: |
bug#36609: 27.0.50; Possible race-condition in threading implementation |
Date: |
Fri, 12 Jul 2019 12:44:35 +0000 |
On Fri, Jul 12, 2019 at 9:02 AM Pip Cet <pipcet@gmail.com> wrote:
>
> On Thu, Jul 11, 2019 at 8:52 PM Andreas Politz
> <politza@hochschule-trier.de> wrote:
> > I think there is a race-condition in the implementation of threads. I
> > tried to find a minimal test-case, without success. Thus, I've attached
> > a lengthy source-file. Loading that file should trigger this bug and
> > may freeze your session.
>
> It does here, so I can provide further debugging information if
> needed. On first glance, it appears that xgselect returns abnormally
> with g_main_context acquired in one thread, and then other threads
> fail to acquire it and loop endlessly.
Okay, I'm still not sure this is really the problem Andreas was
seeing, but this code fails to work with xg_select:
(let ((thread (make-thread (lambda ()
(sleep-for 3)))))
(thread-yield)
(thread-signal thread 'error nil))
Proposed patch attached.
0001-Protect-against-abnormal-exit-in-xg_select.patch
Description: Text Data
- bug#36609: 27.0.50; Possible race-condition in threading implementation, (continued)
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/13
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Andreas Politz, 2019/07/13
bug#36609: 27.0.50; Possible race-condition in threading implementation,
Pip Cet <=
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Pip Cet, 2019/07/12
- bug#36609: 27.0.50; Possible race-condition in threading implementation, Eli Zaretskii, 2019/07/13