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Pathetic start of documenting the kernel scheduler, but somebody's gotta do it. Feel free to confirm and improve!
Low-level system information is exposed by the kernel via mapping the [[Configuration Memory]] page in all processes.
Low-level system information is exposed by the kernel via mapping the [[Configuration Memory]] page in all processes.
= Scheduler =
Little is known about the scheduler behavior of the 3DS kernel.
Threads on the [[Glossary#appcore|ARM11 appcore]] seem to use cooperative multithreading, i.e. the only way for a CPU to be assigned to another thread is by invoking a system call. Most system calls trigger the scheduler, although some of them only conditionally do.
Threads on the [[Glossary#syscore|ARM11 syscore]] have been hypothesized to use preemptive multithreading, but this is unconfirmed so far.
It is unknown how the ARM9 CPU core and the two remaining New3DS ARM11 cores are scheduled.