Since _PyImport_ReInitLock() now calls _PyThread_at_fork_reinit() on the import lock, the lock is now in a known state: unlocked. It became safe to acquire it after fork.
Miscellaneous source files for the main Python shared library
Since _PyImport_ReInitLock() now calls _PyThread_at_fork_reinit() on the import lock, the lock is now in a known state: unlocked. It became safe to acquire it after fork.
Miscellaneous source files for the main Python shared library