Re: 回复:Re: [lwip-users] where can i fi nd out the function for time check

[Tai-hwa Liang]

On Fri, 30 Mar 2007, 朻帡瑟 wrote:
> On Fri, 30 Mar 2007, 朻帡瑟 wrote:
> > void
> > sys_timeout(u32_t msecs, sys_timeout_handler h, void *arg)
> >  register a handle for timeout .   but where can find the function,
> > we call it for timeout check and call the timeout handle registered
> > by sys_timeout().
>
>   See src/core/sys.c, inside sys_mbox_fetch() and sys_sem_wait():
>
>         .
>         .
>         h(arg);
>         .
>         .
> Did you mean that ,lwip doesn't define  time_check_function()  for time
> check .

  If I understand the code correctly, the time_check_function() you referred
is embeded in sys_mbox_fetch()/sys_sem_wait().

>  But we can edit sys_mbox_fetch()  to our
> Own_Time_Check_Function(),for time check and call timeout handle .

  That's what sys_timeout() for: user application arms a timeout handler
and the lwIP calls back.

--
Cheers,

Tai-hwa Liang