From 15f3911599a8d005edee46247470afe2a7a0b4aa Mon Sep 17 00:00:00 2001
From: Aleksa Vuckovic <aleksa@vuckovic.cc>
Date: Mon, 27 Feb 2023 01:59:33 +0100
Subject: almost done multitasking

---
 kernel/src/scheduler/scheduler.c | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

(limited to 'kernel/src/scheduler/scheduler.c')

diff --git a/kernel/src/scheduler/scheduler.c b/kernel/src/scheduler/scheduler.c
index 263c11a..3cbc461 100644
--- a/kernel/src/scheduler/scheduler.c
+++ b/kernel/src/scheduler/scheduler.c
@@ -2,11 +2,38 @@
 #include <scheduler.h>
 #include <libk/list.h>
 #include <process.h>
+#include <heap.h>
+#include <libk/string.h>
+#include <libk/stdio.h>
+#include <panic.h>
 
-process_t *scheduler(void)
+mutex_t scheduler_lock;
+uint32_t sched_init = 0;
+
+__attribute__((noreturn)) void init_scheduler()
+{
+	INIT_LIST(process_queue.list);
+	init_mutex(&scheduler_lock);
+	uint64_t argc = 6;
+	uint64_t *argv = (uint64_t *)kalloc(sizeof(uint64_t) * 6);
+	memset(argv, 0, sizeof(uint64_t) * 6);
+	init_process(0, (uint64_t)idle_thread2, argc, argv);
+	curr_process = init_process(0, (uint64_t)idle_thread, argc, argv);
+	sched_init = 1;
+	restore_context_from_rsp(curr_process->rsp);
+}
+
+process_t *scheduler()
 {
+	lock(scheduler_lock);
 	process_t *pos = curr_process;
+	if (list_is_empty((&process_queue.list)))
+		return NULL;
 	process_t *next_process = list_next_entry(pos, list);
+	while (next_process->rsp == 0) {
+		next_process = list_next_entry(next_process, list);
+	}
+	unlock(scheduler_lock);
 
 	return next_process;
 }
-- 
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