#pragma once

#include <cstdint>

#include "MacroUtils.h"

consteval size_t operator""_KiB( size_t const value )
{
  return value * 1024;
}

consteval size_t operator""_MiB( size_t const value )
{
  return value * 1024_KiB;
}

consteval size_t operator""_GiB( size_t const value )
{
  return value * 1024_MiB;
}

struct GlobalMemory
{
  struct State
  {
    std::byte* memory;
    size_t     available;
  };

  std::byte* memory;
  size_t     available;
  size_t     capacity;

  void       init( size_t size );
  void       destroy();

  [[nodiscard]]
  std::byte* allocate( size_t size );
  [[nodiscard]]
  std::byte* allocate( size_t size, size_t alignment );

  [[nodiscard]]
  State getState() const;                   //< Do not do any permanent allocations after calling this.
  void  restoreState( State const& state ); //< Call this before permanent allocations.
};