Initial commit

include/arena.h

@@ -0,0 +1,20 @@
+#ifndef ARENA_INCLUDED
+#define ARENA_INCLUDED
+
+struct Arena {
+    unsigned char *beg;
+    unsigned char *end;
+};
+typedef struct Arena Arena;
+
+extern void *arena_alloc(int flags, struct Arena *a, size_t nbytes, 
+        size_t align, size_t count, const char *file, int line);
+
+extern struct Arena arena_new(int flags, size_t cap, const char *file, int line);
+extern void arena_back(struct Arena *a, void *buf, size_t len);
+
+#define ARENA(flags, cap) arena_new((flags), (cap), __FILE__, __LINE__)
+#define ARENA_BACK(a, buf, len) arena_back((a), (buf), (len))
+#define ARENA_ALLOC(flags, a, nbytes, align, count) \
+    arena_alloc((flags), (a), (nbytes), (align), (count), __FILE__, __LINE__)
+#endif