Add mmap allocator

src/arena.h

@@ -1,25 +1,13 @@
 #pragma once
 #include "base_core.h"
 
-#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
-#include <sanitizer/asan_interface.h>
-#define ASAN_POISON_MEMORY_REGION(addr, size) \
-  __asan_poison_memory_region((addr), (size))
-#define ASAN_UNPOISON_MEMORY_REGION(addr, size) \
-  __asan_unpoison_memory_region((addr), (size))
-#else
-#define ASAN_POISON_MEMORY_REGION(addr, size) \
-  ((void)(addr), (void)(size))
-#define ASAN_UNPOISON_MEMORY_REGION(addr, size) \
-  ((void)(addr), (void)(size))
-#endif
 
 typedef U32 ArenaFlags;
+enum {
+  ArenaFlag_UseMalloc = (1 << 0),
+};
 
 typedef struct ArenaParams ArenaParams;
-enum {
-    ArenaFlag_UseMalloc = (1 << 0),
-};
 struct ArenaParams {
     U32 size;
     ArenaFlags flags; // No flags defined yet
@@ -52,10 +40,13 @@ static INLINE U32 arena_available(const Arena *arena)
     return arena->size - arena->pos;
 }
 
-Arena *arena_alloc_(const ArenaParams *params);
+Arena *arena_alloc(const ArenaParams *params);
 void arena_free(Arena *arena);
 void *arena_push(Arena *arena, U32 size, U32 align);
 
+#define arena_push_type(arena, type) arena_push(arena, (U32)sizeof(type), alignof(type))
+#define arena_push_array_of(arena, type, len) arena_push(arena, (U32) (sizeof(type) * (len)), alignof(type))
+
 ArenaCheckPoint arena_temp_begin(Arena *arena);
 void arena_temp_end(ArenaCheckPoint *checkpoint);
 void arena_pop_to(Arena *arena, U32 abs_pos);