Is AmigaOS pre-emptive or co-operative? ;)

[bloodline]

Hey there, google translate isn't being very clear here... What is Linus getting at?

https://groups.google.com/group/sfnet.atk.sodat/msg/9d730043aa229345?hl=fi&dmode=source

-edit- changed topic title to reflect the current thread.

[bloodline]

Many thanks Piru,


I see his point, but I feel his issue is a security one rather than a multitasking one. I think a co-operative multitasking system explicitly requires a task to give up the CPU... In AmigaOS a task as to explicitly "request" (as if disable()/forbid() are optional for the OS to action) that CPU is not given up.

I submit linus is wrong :lol:

[bloodline]

I also disagree with Linus regarding Monolithic and Micro Kernels... I guess that's why I'm looking for Darwin solutions to replace my current linux based boxes (not an easy task).

[bloodline]

I dunno, the arguments around monolithic v microkernel have some good points on both sides. Also, Darwin is not what I'd call a microkernel. At best it has elements of both and is probably best described as a "hybrid", which may be no bad thing.

Actually I agree, the argument for and against either design is compelling either way! But from a philosophical view point I prefer microkernel... Though I fully understand the real world does not fit the ideological one

Yes, Hybrids are the best real world solutions in almost all situations!

Why, do they not do what you require?

A lot of these design arguments are very interesting but in the real world, if it isn't broken, why fix it?

Goodness me no, Linux meets and exceeds all requirements, but since I am running these boxes/boards as a hobby I would prefer to fit my ideology rather than practicality... I guess the same reason people still want to run PPC CPUs even though they offer no real world advantage.

[bloodline]

@Matt

Have you played with Haiku much?

Actually no, I did run BeOS PE5 for about 3 months as my main OS... But while I did like some of the ideas behind it, I was never grabbed.

The Genode thing you linked me to, look much more interesting.

BTW, I like darwin for a few reasons: it is built for x86 and ARM (my two hobby CPUs), it's a microkernel (well more a hybrid) and it has a fully featured Obj-C runtime that suits my predilection for Obj-C at the moment

[bloodline]

Pervert :lol:

You know it!