Title: Reinit IO buffer locks after fork to prevent deadlocks by youknowone · Pull Request #7339 · RustPython/RustPython · GitHub
Open Graph Title: Reinit IO buffer locks after fork to prevent deadlocks by youknowone · Pull Request #7339 · RustPython/RustPython
X Title: Reinit IO buffer locks after fork to prevent deadlocks by youknowone · Pull Request #7339 · RustPython/RustPython
Description: BufferedReader/Writer/TextIOWrapper use PyThreadMutex internally. If a parent thread held one of these locks during fork(), the child would deadlock on any IO operation. Add reinit_after_fork() to RawThreadMutex and call it on sys.stdin/ stdout/stderr in the child process fork handler, analogous to CPython's _PyIO_Reinit(). Summary by CodeRabbit Bug Fixes Prevented potential deadlocks when forking on Unix systems with threading enabled by reinitializing thread and per-object I/O locks in the child process, ensuring stdin/stdout/stderr and standard I/O wrappers remain usable after fork.
Open Graph Description: BufferedReader/Writer/TextIOWrapper use PyThreadMutex internally. If a parent thread held one of these locks during fork(), the child would deadlock on any IO operation. Add reinit_after_fork() to ...
X Description: BufferedReader/Writer/TextIOWrapper use PyThreadMutex internally. If a parent thread held one of these locks during fork(), the child would deadlock on any IO operation. Add reinit_after_fork() to ...
Opengraph URL: https://github.com/RustPython/RustPython/pull/7339
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