if (InterlockedIncrement(&runtime_init_once_gate) == 1) {
				 _cgo_preinit_init();
				 InterlockedIncrement(&runtime_init_once_done);
			} else {
				 // Decrement to avoid overflow.
				 InterlockedDecrement(&runtime_init_once_gate);
				 while(!InterlockedExchangeAdd(&runtime_init_once_done, 0)) {
						Sleep(0);
				 }
			}
	 }
}

void
x_cgo_sys_thread_create(void (*func)(void*), void* arg) {