gh-120837: Update _Py_DumpExtensionModules to be async-signal-safe#121051
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corona10 merged 8 commits intopython:mainfrom Jun 27, 2024
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gh-120837: Update _Py_DumpExtensionModules to be async-signal-safe#121051corona10 merged 8 commits intopython:mainfrom
corona10 merged 8 commits intopython:mainfrom
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corona10
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Jun 26, 2024
Python/pylifecycle.c
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| PyMutex *mutex = &obj->ob_mutex; | ||
| uint8_t expected = _Py_UNLOCKED; | ||
| // Do not wake up other threads. | ||
| _Py_atomic_compare_exchange_uint8(&mutex->_bits, &expected, _Py_UNLOCKED); |
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Do we have to run for loop to prevent CAS failure?
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I think this should be a _Py_atomic_store_uint8(&mutex->_bits, _Py_UNLOCKED)
vstinner
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Jun 26, 2024
vstinner
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Jun 27, 2024
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@colesbury PTAL :) |
colesbury
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Jun 27, 2024
Python/pylifecycle.c
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| PyMutex *mutex = &obj->ob_mutex; | ||
| uint8_t expected = _Py_UNLOCKED; | ||
| // Do not wake up other threads. | ||
| _Py_atomic_compare_exchange_uint8(&mutex->_bits, &expected, _Py_UNLOCKED); |
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I think this should be a _Py_atomic_store_uint8(&mutex->_bits, _Py_UNLOCKED)
colesbury
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Jun 27, 2024
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LGTM, thanks for fixing this!
(I left one minor comment inline. Up to you what you want to do with it.)
Python/pylifecycle.c
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| #else | ||
| return; |
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The #else return; doesn't do anything. I would delete it, but up to you.
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Thanks @corona10 for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13. |
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…afe (pythongh-121051) (cherry picked from commit 1a2e7a7) Co-authored-by: Donghee Na <donghee.na@python.org>
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GH-121107 is a backport of this pull request to the 3.13 branch. |
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faulthandleritself crashes in free-threading build (in_Py_DumpExtensionModules) #120837