#pragma once
#include "base_core.h"

typedef U32 ArenaFlags;

typedef struct ArenaParams ArenaParams;
enum {
    ArenaFlag_UseMalloc = (1 << 0),
};
struct ArenaParams {
    U32 size;
    ArenaFlags flags; // No flags defined yet
};

typedef struct Arena Arena;
struct Arena {
    Arena *current;
    U8 *base;
    U32 size;
    U32 pos;
    ArenaFlags flags;
    Arena *prev;
};

StaticAssert(sizeof(Arena) <= 64);
#define ARENA_HEADER_SZ 64


INLINE U32 arena_available(const Arena *arena)
{
    return arena->size - arena->pos;
}