gh-125434: Display thread name in faulthandler on Windows #140675
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vstinner
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Calling OpenThread(), GetThreadDescription() and _Py_EncodeLocaleRaw() is not async signal-safe. For example, _Py_EncodeLocaleRaw() allocates memory on the heap memory. But on Windows, signal handlers are called in a temporary thread. So it should be ok to call these functions in faulthandler signal handlers. |
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Ok, let's see how it goes. Merged, thanks for reviews. I'm not confident in this code, so I prefer to not backport it to 3.14.1. Also, it can be seen as a new feature rather than a bugfix. |
vstinner
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Nov 27, 2025
…on#140675) (cherry picked from commit 313145e)
vstinner
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…2011) * gh-125434: Display thread name in faulthandler on Windows (#140675) (cherry picked from commit 313145e) * gh-125434: Fix non-ASCII thread names in faulthandler on Windows (#140700) Add _Py_DumpWideString() function to dump a wide string as ASCII. It supports surrogate pairs. Replace _Py_EncodeLocaleRaw() with _Py_DumpWideString() in write_thread_name(). (cherry picked from commit 80f20f5)
StanFromIreland
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