wip: thread and processes handle

headers/thread.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "process.h"
+
+#include <stdint.h>
+
+#define STACK_SIZE PAGE_SIZE * 4
+
+typedef enum {
+	NEW,
+	RUNNING,
+	WAITING,
+	STOPPED,
+} state_t;
+
+struct tcb {
+	uint8_t *esp;
+	uint8_t *esp0;
+	uint16_t tid;
+	state_t state;
+	struct pcb *process;
+	struct tcb *next;
+};
+
+struct tcb *create_thread(struct pcb *process, void (*routine)(void));
+void delete_thread(struct tcb *thread);
+void switch_thread(struct tcb *thread_to_switch);