Re: scm_gc_mark

[Keisuke Nishida]

At 31 Jan 2001 18:16:32 +0200,
Michael Livshin wrote:
> 
> > #define scm_gc_mark(x) \
> >   do { if (SCM_NIMP (x)) scm_i_gc_mark (x); } while (0)
> 
> could be faster, yes.  as with all things involving frequently and
> recursively called functions, a real improvement is not certain (it
> may sound paranoid, but I speak from (some) experience).
> 
> if you benchmark and see an improvement, feel free to make this
> change.  be sure to benchmark with deeply nested data structures;
> cons-trees with deep nesting _both_ in the car and the cdr are best
> (and easiest to generate) for making scm_gc_mark() eat huge quantities
> of stack space.

Hmm, this won't make a significant difference anyway, so I don't
do that now.  I'll use this test explicitly in my vm and see the
difference some time.

Kei