tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type portevent struct {
	portev_events int32
	portev_source uint16
	portev_pad    uint16
	portev_object uint64
	portev_user   *byte
}

type pthread uint32
type pthreadattr struct {
	__pthread_attrp *byte
}