Fixed the race condition in NamedThread#984
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veloman-yunkan merged 2 commits intomainfrom May 4, 2025
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## main #984 +/- ##
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- Coverage 57.65% 57.65% -0.01%
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Files 103 103
Lines 4922 4926 +4
Branches 2066 2068 +2
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+ Hits 2838 2840 +2
Misses 706 706
- Partials 1378 1380 +2 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Before this fix, `NamedThread::getCurrentThreadName()` might be called from the new thread (that already started executing) before the assignment to `thread_` in the `NamedThread` constructor had taken place. Then the query to the thread id (`nt->thread_.get_id()`) on such a thread did not return the correct id, and the end result was that a new (numbered) thread name was synthesized for that thread. From that point onward, concurrency orchestration via `log_debug()` (which relies on correct thread names) broke, typically resulting in a deadlock. This fix slightly reduces the generality of the `NamedThread` constructor (support for arguments to the callable has been dropped) since it is not currently needed (and even if it was needed, it could be circumvented with an extra lambda expression).
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@veloman-yunkan This PR seems to introduce a compilation regression (Windows only!), see https://github.com/openzim/libzim/actions/runs/14819235224/job/41603865419?pr=984 |
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Fixes #983