internal void *
platform_memory_reserve(u64 size)
{
  void *result = VirtualAlloc(0, size, MEM_RESERVE, PAGE_READWRITE);
  return result;
}

internal b8
platform_memory_commit(void *ptr, u64 size)
{
  b32 result = (VirtualAlloc(ptr, size, MEM_COMMIT, PAGE_READWRITE) != 0);
  return result;
}

internal void
platform_memory_decommit(void *ptr, u64 size)
{
  VirtualFree(ptr, size, MEM_DECOMMIT);
};

internal void
platform_memory_release(void *ptr, u64 size)
{
  VirtualFree(ptr, 0, MEM_RELEASE);
}

internal u64
platform_get_page_size(void)
{
  SYSTEM_INFO sysinfo = {0};
  GetSystemInfo(&sysinfo);
  return sysinfo.dwPageSize;
}