On Monday 12 March 2007 14:56, Pawel Jakub Dawidek wrote:
> On Mon, Mar 12, 2007 at 11:16:23AM -0400, John Baldwin wrote:
> > On Saturday 10 March 2007 15:52, Pawel Jakub Dawidek wrote:
> > > What about something like this:
> > >
> > > #define cv_wait(cv, lock) do {
> > > switch (LO_CLASSINDEX((struct lock_object *)(lock))) {
> >
> > The problem with a cast is you use type checking. Might as well do this:
> >
> > #define cv_wait(cv, lock) _cv_wait((cv), (struct lock_object
> > *)(lock))
>
> This will skip type checking and my version only cast to provide type
> checking, so when you pass some random variable it will give you an
> error.
Not really, you may pass some garbage and the LO_CLASSINDEX turns out to be a
mutex. :) You only get a runtime error, not a compile-time one.
Type-checking by the compiler is nice because you get compile-time errors.
--
John Baldwin
_______________________________________________
cvs-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/cvs-all
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
