#ifndef AMR_MEMORY_H
#define AMR_MEMORY_H

#ifndef DEFAULT_ALIGNMENT
#define DEFAULT_ALIGNMENT (2*sizeof(void *))
#endif

typedef struct amr_DebugArena {
  u8 *Buffer;
  size_t Size;
  size_t CurrOffset;
  size_t PrevOffset;
} amr_DebugArena;

bool amr_IsPowerOfTwo(uintptr_t x);
uintptr_t amr_AlignForward(uintptr_t ptr, size_t align);
void *amr_ArenaAllocAlign(amr_DebugArena *Alloc, size_t Size, size_t Align);
void amr_ArenaInit(amr_DebugArena *Alloc, void* BackingBuffer, size_t Size);
void *amr_ArenaAlloc(amr_DebugArena *Alloc, size_t Size);
void amr_ArenaFree(amr_DebugArena *Alloc, void *Ptr);
void *amr_ArenaResizeAlign(amr_DebugArena *Alloc, void *OldMem, size_t OldSize,
                        size_t NewSize, size_t Align);
void *amr_ArenaResize(amr_DebugArena *Alloc, void *OldMem, size_t OldSize, size_t NewSize);
void amr_ArenaFreeAll(amr_DebugArena *Alloc);

#endif