Linked by Hadrien Grasland on Sun 29th May 2011 09:42 UTC
It's funny how trying to have a consistent system design makes you constantly jump from one area of the designed OS to another. I initially just tried to implement interrupt handling, and now I'm cleaning up the design of an RPC-based daemon model, which will be used to implement interrupt handlers, along with most other system services. Anyway, now that I get to something I'm personally satisfied with, I wanted to ask everyone who's interested to check that design and tell me if anything in it sounds like a bad idea to them in the short or long run. That's because this is a core part of this OS' design, and I'm really not interested in core design mistakes emerging in a few years if I can fix them now. Many thanks in advance.
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Well, this looks like the beginning of an answer, so if you allow me...
At the core, we have this: daemon process wants to inform the kernel that there's a range of things which it can do for other processes. The procedure/function abstraction sounded like the simplest one around the "things which it can do" concept to me.
Hmmm... Can you mention a modern, serious programming language (joke languages like BF don't count) that does not have the concepts of a function or a pointer ? Because once the concepts are there, dealing with the switch from one language to another during a call is just a matter of gory implementation magic.
I'd prefer it if we didn't put the notions of long story and success in there. DOS has a long story, Windows is successful. Does it mean that these are examples which everyone in the OS development community would like to follow ?
Edited 2011-05-29 20:05 UTC