}

func (p *Process) wait() (ps *ProcessState, err error) {
	var waitmsg syscall.Waitmsg

	switch p.pidStatus() {
	case statusReleased:
		return nil, ErrInvalid
	}

	err = syscall.WaitProcess(p.Pid, &waitmsg)
	if err != nil {
		return nil, NewSyscallError("wait", err)
	}

	p.pidDeactivate(statusDone)
	ps = &ProcessState{
		pid:    waitmsg.Pid,
		status: &waitmsg,
	}
	return ps, nil
}