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#ifndef ARENA_H
#define ARENA_H
#define Align(pointer, alignment) align((u64)(pointer), (umm)(alignment))
#define PushStruct(arena, type) (type *)arena_alloc((arena), sizeof(type))
#define PushArray(arena, type, len) (type *)arena_alloc((arena), sizeof(type) * (len))
#define PushString(arena, len) (s8 *)arena_alloc((arena), sizeof(s8)*len))
typedef struct mem_arena mem_arena;
typedef struct temp_arena temp_arena;
struct mem_arena
{
u64 current_position;
u64 previous_position;
u64 capacity;
u8 *base_position;
};
struct temp_arena
{
mem_arena *arena;
u64 start_position;
};
internal mem_arena *
arena_create(u64 capacity);
internal void
arena_destroy(mem_arena *arena);
internal void *
arena_alloc(mem_arena *arena, u64 size);
internal void
arena_clear(mem_arena *arena);
internal void
arena_clear(mem_arena *arena);
internal mem_arena *
arena_resize_align(
mem_arena *arena,
void *old_memory,
u64 new_size,
u64 old_size,
umm alignment);
internal mem_arena *
arena_resize(
mem_arena *arena,
void *old_memory,
u64 new_size,
u64 old_size);
#endif
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