From: Lukas Krickl <lukas@krickl.dev>
Date: Mon, 23 Feb 2026 18:53:21 +0000 (+0100)
Subject: u_arena: Added basic setup
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=738d1ac88ee40d85d52f4a3d531fc415ed338037;p=lrts%2F.git

u_arena: Added basic setup
---

diff --git a/src/tests/t_arena.c b/src/tests/t_arena.c
index ba243c3..f56be8c 100644
--- a/src/tests/t_arena.c
+++ b/src/tests/t_arena.c
@@ -13,12 +13,26 @@ int t_test_arena(void) {
 	
 	/* alloc */
 	p1 = u_arena_alloc(&a, 1);
-	T_ASSERT((char *)p1 - (char*)a.data == 0, ("Unable to alloc index is at %d\n", a.o_index));
-	T_ASSERT(a.o_index, ("o_index bad\n"));
+	T_ASSERT((char *)p1 - (char*)a.data == 0, ("Unable to alloc index is at %d start address: %p; ptr: %p\n", 
+				a.o_index,
+				a.data,
+				p1));
+	T_ASSERT(a.o_index == 1, ("o_index bad\n"));
+
+	p1 = u_arena_alloc(&a, 2);
+	T_ASSERT((char *)p1 - (char*)a.data == 2, ("Unable to alloc index is at %d start address: %p; ptr: %p\n", 
+				a.o_index,
+				a.data,
+				p1));
+	T_ASSERT(a.o_index == 3, ("o_index bad\n"));
 
 	/* reset */
+	u_arena_clear(&a);
+	T_ASSERT(a.o_index == 0, ("Index not 0"));
 
 	/* free */
+	u_arena_free(&a);
+	T_ASSERT(a.data == LRTS_NULL, ("data not null"));
 
 	return 0;
 }
diff --git a/src/u_arena.c b/src/u_arena.c
index 6992532..9349a78 100644
--- a/src/u_arena.c
+++ b/src/u_arena.c
@@ -32,8 +32,20 @@ void *u_arena_alloc(struct u_arena *a, u32 n) {
 	}
 	
 	/* get the new start address */
-	p = (char *)a->data + a->o_index + a->o_size * n;
+	p = (char *)a->data + a->o_index * a->o_size;
 	a->o_index = new_o_index;
 
 	return p;
 }
+
+void u_arena_clear(struct u_arena *a) {
+	lrts_assert(a);
+	a->o_index = 0;
+}
+
+void u_arena_free(struct u_arena *a) {
+	lrts_assert(a);
+	lrts_assert(a->data);
+	u_free(a->data);
+	a->data = LRTS_NULL;
+}