#pragma once
// ke_sched.h - Multi-Level Feedback Queue scheduler
// Three run queues (Low / Normal / High). IRQ 0 drives KeSchedulerTick.
#include <ke_thread.h>

#define QUANTUM_MS  10 // base time slice in milliseconds

// Called once by KernelMain before any threads are created.
void    KeInitializeScheduler(void);

// Add / remove a thread from the run queues.
void    KeReadyThread(THREAD* thread);
void    KeUnreadyThread(THREAD* thread);

// Called from the timer ISR every QUANTUM_MS.
void    KeSchedulerTick(void);

// Voluntarily yield the CPU. Picks the next runnable thread immediately.
__declspec(dllexport) void KeYield(void);

// Returns the thread currently running on this CPU (reads GS:[0]).
THREAD* KeGetCurrentThread(void);

// Set the current-thread GS slot. Called once per CPU at boot.
void    KeSetCurrentThread(THREAD* thread);