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 Post subject: Re: IPC by "process hopping"
PostPosted: Thu Oct 28, 2021 1:32 am 
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In addition to the issues I mentioned above, you also have to avoid race conditions and deadlocks. So servers have to be careful when entering critical sections.


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 Post subject: Re: IPC by "process hopping"
PostPosted: Sun Jan 16, 2022 8:34 pm 
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(Hello. I'm newly registered. Otherwise I would have replied earlier.)

"Process Hopping" sounds to me a lot like the Door concept in Sun Microsystem's research OS Spring.
A type of Unix-ified Door mechanism was later added to Sun Solaris.

The Mill is a CPU architecture under development which has threads and "Portals" in hardware. A portal call uses the same instruction as a local call: it is identified by the destination's protection bits.

Things get complex with nested calls and error states though. I think that what would could be most interesting to read about is how those issues were addressed.


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