Does multiprocessing.shared_memory require locking?

Question

I'm learning about shared memory in Python, especially the python 3.8 module multiprocessing.shared_memory . I see no mention of locking in the documentation. (Although the parent module, multiprocessing , has a Lock object). Are locks somehow handled in the underlying code of multiprocessing.shared_memory or in /dev/shm ? That is, is it safe to write to a SharedMemory object from multiple processes at the same time with no explicit locking? Thank you advance for any clarification.

https://docs.python.org/3/library/multiprocessing.shared_memory.html

Answer 1

The Array() class is supposed to be like the synchronized version of shared memory, so no I expect not. You get what it says: a block of shared memory with no synchronization overhead, for times when you don't need it or want to implement your own.