Hello all,
I have been working on a distributed operating system targeting raspberry pi boards for university. It's mostly a microkernel and some servers passing around (a butchered version of) 9p messages from Plan 9. It kind of works at the moment, I plan to expand on it.
You can find the code here: https://github.com/tolias-an/anthill-os
Let me know what you think!
Cheers
Announcement: Anthill OS
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Re: Announcement: Anthill OS
Overall a pretty neat job.
I think your context is too thick https://github.com/tolias-an/anthill-os ... _context.S. You can try to reduce it with cooperative multitasking (here is an example for 386 https://github.com/Alexey1994/IdealOS/b ... cess.c#L29).
I also think that 64-bit raspberry is a very bad platform, because it consumes a lot of energy, more than atom laptops. The best choice would be stm32f411.
Re: Announcement: Anthill OS
Thanks for the tips.
From my understanding that would impact the application portability, which is something I plan to rely on. I'll keep it in mind though.You can try to reduce it with cooperative multitasking.
I chose raspberry pi because that's what i'm most familiar with, and I could find many resources for it. When it runs on baremetal, I'll take a stab at porting it to other chips.I also think that 64-bit raspberry is a very bad platform, because it consumes a lot of energy, more than atom laptops. The best choice would be stm32f411.
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Re: Announcement: Anthill OS
Shouldn't have any effect at all, since yield calls are carried into system calls, excluding poorly written programs. Moreover, there is a good trigger for a hung program - it does not switch after n timer ticks. In this case, you can connect preemptive multitasking, which you already have implemented, and save the thick task context. In other words, a combined approach will increase performance and maintain compatibility.
Re: Announcement: Anthill OS
Thanks! I'll look into it.