There are plenty of different IPC mechanisms available in
multiprocessing.
It is good for a special case: a tree of processes, forked from a main
process. multiprocessing.Queue cannot be used as a general message queue
between arbitrary processes.
- mmap.mmap with 0 or -1 as the first argument (Windows and Linux,
respectively)
Which lacks synchronization between processes. (How do you notify the
other process? How can the other process wait until notified?)
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