Does modern Linux have anything close to Doors? I’ve an embedded application where two processes exchange small amounts of data which are latency sensitive, and I’m wondering if there’s anything better than AF_UNIX.
Would be helpful to know what your problem is with AF_UNIX at the moment. Is it lacking in features you want? Is it higher latency than you'd want? Is the server/client socket API style not appropriate for your use-case?
Well, it’s probably fine but, it’s an audio application where metering (not audio) is delivered from a control plane process to a UI process. Lower latency is better. But haven’t measured it.