- https://docs.python.org/3/library/gc.html#module-gc
gc.freeze()-
Freeze all the objects tracked by gc - move them to a permanent generation and ignore all the future collections. This can be used before a POSIX fork() call to make the gc copy-on-write friendly or to speed up collection. Also collection before a POSIX fork() call may free pages for future allocation which can cause copy-on-write too so it’s advised to disable gc in master process and freeze before fork and enable gc in child process.
New in version 3.7.
gc.unfreeze()-
Unfreeze the objects in the permanent generation, put them back into the oldest generation.
New in version 3.7.
gc.get_freeze_count()-
Return the number of objects in the permanent generation.