[3.13] gh-126688: Reinit import lock after fork (GH-126692) #126765
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The PyMutex implementation supports unlocking after fork because we clear the list of waiters in parking_lot.c. This doesn't work as well for _PyRecursiveMutex because on some systems, such as SerenityOS, the thread id is not preserved across fork(). (cherry picked from commit 5610860) Co-authored-by: Sam Gross <colesbury@gmail.com>
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python/cpython#126765 Closes SerenityOS#25263 Make sure to revert this commit before updating Python.
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python/cpython#126765 Closes #25263 Make sure to revert this commit before updating Python.
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The PyMutex implementation supports unlocking after fork because we
clear the list of waiters in parking_lot.c. This doesn't work as well
for _PyRecursiveMutex because on some systems, such as SerenityOS, the
thread id is not preserved across fork().
(cherry picked from commit 5610860)
Co-authored-by: Sam Gross colesbury@gmail.com