Method atExitShutdown

src/yvalve/why.cpp:758–764

private:
	static void atExitShutdown()
	{
		if (MasterInterfacePtr()->getProcessExiting())
			InstanceControl::cancelCleanup();
		else
			fb_shutdown(SHUTDOWN_TIMEOUT, fb_shutrsn_exit_called);
	}
};

#ifdef UNIX