Is mmap usable for IPC?

Paul Rubin phr-n2002b at
Thu Sep 26 23:40:23 CEST 2002

janeaustine50 at (Jane Austine) writes:
> Is mmap module usable for inter-process communication?
> Does it provide lock, or semaphore? Is it safe to write
> from a process and read from multiple other processes
> simultaneously?
> Any information appreciated.

Mmap doesn't provide lock.  Use shm instead.

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