[3.12] gh-104372: Drop the GIL around the vfork() call. (GH-104782) - #104942
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gpshead merged 1 commit intoMay 25, 2023
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[3.12] gh-104372: Drop the GIL around the vfork() call. (GH-104782)#104942gpshead merged 1 commit into
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On Linux where the `subprocess` module can use the `vfork` syscall for faster spawning, prevent the parent process from blocking other threads by dropping the GIL while it waits for the vfork'ed child process `exec` outcome. This prevents spawning a binary from a slow filesystem from blocking the rest of the application. Fixes pythonGH-104372. (cherry picked from commit d086792) Co-authored-by: Gregory P. Smith <gps@python.org>
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On Linux where the subprocess module can use the vfork syscall for
faster spawning, prevent the parent process from blocking other threads
by dropping the GIL while it waits for the vfork'ed child process exec
outcome. This prevents spawning a binary from a slow filesystem from
blocking the rest of the application.
Fixes GH-104372.
(cherry picked from commit d086792)
Co-authored-by: Gregory P. Smith gps@python.org
📚 Documentation preview 📚: https://cpython-previews--104942.org.readthedocs.build/