Re: [RFC] timers, pointers to functions and type safety
From: Roman Zippel
Date: Sat Dec 02 2006 - 17:13:50 EST
Hi,
On Sat, 2 Dec 2006, Al Viro wrote:
> > You need some more magic macros to access/modify the data field.
>
> Which is done bloody rarely. grep and you'll see... BTW, there are
> other reasons why passing struct timer_list * is wrong:
> * direct calls of the timer callback
Why should that be wrong?
> * callback being the same for two timers embedded into
> different structs
That's done bloody rarely as well.
> * see a timer callback, decide it looks better as a tasklet.
> What, need a different glue now?
What's wrong with changing the prototype? If you don't do it, the compiler
will complain about it anyway.
> Look, it's a delayed call. The less glue we need, the better - the
> rules are much simpler that way, so that alone means that we'll get
> fewer fsckups.
You have the glue in a different place, so what?
The other alternative has real _practical_ value in almost every case,
which I very much prefer. What's wrong with that?
bye, Roman
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