[jensa1948]

I can see points against exceptions, but generally RAII has nothing to with exceptions, so what is the point against this?

It makes managing any resource with acquire/release semantics very easy. It also prevents errors when the code is modified later because you cannot forget to call cleanup code as it is done automatically. I have no experience with kernel programming, but acquire/release seems to be something that is done in the kernel.

[naasking]

> It makes managing any resource with acquire/release semantics very easy.

Agreed. But microkernels generally don't acquire or release resources. Most people arguing against this point seem to have a monolithic kernel mindset, but microkernels are a whole different beast.

If a kernel owns any kind of resources, that leaves the whole system vulnerable to denial of service attacks. Therefore, microkernels have long since adopted designs where the kernel does not own or allocate anything, and all resources belong to processes (which incidentally makes identifying misbehaving processes easy, something not easy on UNIX kernels).

Any data the kernel requires for its operation is allocated at boot time and lives until the system halts.