static [FRunnableThread](API\Runtime\Core\HAL\FRunnableThread) * CreateForkableThread ( class [FRunnable](API\Runtime\Core\HAL\FRunnable) * InRunnable, const TCHAR * InThreadName, uint32 InStackSize, EThreadPriority InThreadPri, uint64 InThreadAffinityMask, EThreadCreateFlags InCreateFlags )