Defined arena for memory management.

1 files changed, 27 insertions, 0 deletions

diff --git a/wv_mem.h b/wv_mem.h
new file mode 100644
index 0000000..9d23ae8
--- /dev/null
+++ b/wv_mem.h
@@ -0,0 +1,27 @@
+#ifndef WV_MEM_H
+#define WV_MEM_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/* Relative offset into the arena */
+typedef uint32_t wv_ref;
+
+/* 0 is our 'NULL' */
+#define WV_REF_NULL 0
+
+/* Resolve a ref into a memory address */
+#define WV_ADDR(arena, ref) ((void *)((arena)->buf + (ref)))
+
+struct wv_arena {
+	size_t size;
+	size_t offset;
+	unsigned char *buf;
+};
+
+struct wv_arena*  wv_arena_create(size_t n);
+wv_ref            wv_alloc(struct wv_arena *arena, size_t n);
+void              wv_arena_reset(struct wv_arena *arena);
+void              wv_arena_destroy(struct wv_arena *arena);
+
+#endif /* WV_MEM_H */