Kernel: Implement software context switching and Processor structure

Moving certain globals into a new Processor structure for
each CPU allows us to eventually run an instance of the
scheduler on each CPU.

1 files changed, 4 insertions, 10 deletions

diff --git a/Kernel/Scheduler.h b/Kernel/Scheduler.h
index ea374fa946..7ed8642caf 100644
--- a/Kernel/Scheduler.h
+++ b/Kernel/Scheduler.h
@@ -43,28 +43,25 @@ struct SchedulerData;
 extern Thread* g_finalizer;
 extern Thread* g_colonel;
 extern WaitQueue* g_finalizer_wait_queue;
-extern bool g_finalizer_has_work;
+extern Atomic<bool> g_finalizer_has_work;
 extern u64 g_uptime;
 extern SchedulerData* g_scheduler_data;
 extern timeval g_timeofday;
 
 class Scheduler {
 public:
-    static void initialize();
+    static void initialize(u32 cpu);
     static void timer_tick(const RegisterState&);
+    [[noreturn]] static void start();
     static bool pick_next();
     static timeval time_since_boot();
-    static void pick_next_and_switch_now();
-    static void switch_now();
     static bool yield();
     static bool donate_to(Thread*, const char* reason);
     static bool context_switch(Thread&);
-    static void prepare_to_modify_tss(Thread&);
     static Process* colonel();
-    static bool is_active();
     static void beep();
     static void idle_loop();
-    static void stop_idling();
+    static void invoke_async();
 
     template<typename Callback>
     static inline IterationDecision for_each_runnable(Callback);
@@ -74,9 +71,6 @@ public:
 
     static void init_thread(Thread& thread);
     static void update_state_for_thread(Thread& thread);
-
-private:
-    static void prepare_for_iret_to_new_process();
 };
 
 }