add an arena allocator first impl

1 files changed, 10 insertions, 2 deletions

diff --git a/src/std/mem.h b/src/std/mem.h
index 74222a7..75b6d2a 100644
--- a/src/std/mem.h
+++ b/src/std/mem.h
@@ -9,6 +9,14 @@
  */
 #pragma once
 
-#include "defines.h"
+#include <stddef.h>
 
-typedef void* (*alloc)(size_t amount);
\ No newline at end of file
+// Inspired by https://nullprogram.com/blog/2023/09/27/
+typedef struct arena {
+  char* begin;
+  char* end;
+} arena;
+
+arena arena_create(void* backing_buffer, size_t capacity);
+void *arena_alloc(arena* a, size_t size);
+void *arena_alloc_align(arena* a, size_t size, size_t align);