From 9966b49db468de0168c7a455dfb5b4c66c413c4d Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sun, 19 Dec 2021 17:10:36 +0200
Subject: Massive changes to jump to userspace

---
 common/tcb.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 common/tcb.c

(limited to 'common/tcb.c')

diff --git a/common/tcb.c b/common/tcb.c
new file mode 100644
index 0000000..5b00524
--- /dev/null
+++ b/common/tcb.c
@@ -0,0 +1,55 @@
+#include <apos/tcb.h>
+#include <apos/utils.h>
+#include <apos/sp_tree.h>
+
+static struct sp_root t_root = (struct sp_root){0};
+
+#define tcb_container(x) \
+	container_of(x, struct tcb, sp_n)
+
+void threads_insert(struct tcb *t)
+{
+	if(!sp_root(t_root)){
+		sp_root(t_root) = &t->sp_n;
+		return;
+	}
+
+	struct sp_node *n = sp_root(t_root), *p = NULL;
+	enum sp_dir d = LEFT;
+
+	while(n){
+		struct tcb *tc = tcb_container(n);
+		p = n;
+
+		if(t->tid < tc->tid){
+			n = sp_left(n);
+			d = LEFT;
+		}
+
+		else {
+			n = sp_right(n);
+			d = RIGHT;
+		}
+	}
+
+	sp_insert(&sp_root(t_root), p, &t->sp_n, d);
+}
+
+struct tcb *threads_find(id_t tid)
+{
+	struct sp_node *n = sp_root(t_root);
+
+	while(n){
+		struct tcb *t = tcb_container(n);
+
+		if(t->tid == tid)
+			return t;
+
+		if(t->tid < tid)
+			n = sp_left(n);
+		else
+			n = sp_right(n);
+	}
+
+	return 0;
+}
-- 
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