sched: add current_task(), current_thread(), and preempt_disable/enable()

sched/core.c

@@ -0,0 +1,38 @@
+#include <socks/object.h>
+#include <socks/sched.h>
+#include <socks/cpu.h>
+#include <socks/printk.h>
+
+extern kern_status_t setup_kernel_task(void);
+extern kern_status_t task_object_type_init(void);
+extern kern_status_t thread_object_type_init(void);
+
+kern_status_t sched_init(void)
+{
+	kern_status_t status = KERN_OK;
+
+	status = task_object_type_init();
+	if (status != KERN_OK) {
+		return status;
+	}
+
+	status = thread_object_type_init();
+	if (status != KERN_OK) {
+		return status;
+	}
+
+	status = setup_kernel_task();
+	if (status != KERN_OK) {
+		return status;
+	}
+
+	thread_t *this_thread = QUEUE_CONTAINER(thread_t, tr_threads, queue_first(&kernel_task()->t_threads));
+
+	cpu_data_t *this_cpu = get_this_cpu();
+	runqueue_init(&this_cpu->c_rq);
+	this_cpu->c_current_thread = this_thread;
+	put_cpu(this_cpu);
+
+	printk("sched: initialised");
+	return status;
+}