Disclaimer: I am very out of touch with what's actually going on on
perl6-internals at the moment. (And even more out of touch with the source
code)
On Tue, Sep 24, 2002 at 04:56:25AM +, Leopold Toetsch wrote:
> +return list->chunk_list[idx / INTLIST_CHUNK_SIZE];
On Tue, Sep 24, 2002 at
Sean O'Rourke wrote:
> On Tue, 24 Sep 2002, Leopold Toetsch wrote:
>
>>Sean O'Rourke wrote:
>>Exactly this is, what my recent patch actually did: list->chunk_list
>>holds pointers to chunks, an index lookup is one "div" more expensive
>>then in array.
>>
> It's not in #17549. Is it in an earl
On Tue, 24 Sep 2002, Leopold Toetsch wrote:
> Sean O'Rourke wrote:
> > If we expect these (especially shift) to be as frequent as push/pop, and
> > we want fast indexing as well, then maybe something like the SGI STL
> > implementation of a dequeue (dequeueue?) would be best: keep an array of
> >
Sean O'Rourke wrote:
> On Tue, 24 Sep 2002, Leopold Toetsch wrote:
>
>>Sean O'Rourke (via RT) wrote:
> The real-world version would increase the array's allocation by some fixed
> multiple, e.g. double its size, which would still improve things from O(n)
> to O(log n) reallocations. I suspect
On Tue, 24 Sep 2002, Leopold Toetsch wrote:
> Sean O'Rourke (via RT) wrote:
>
> > What happens if you presize the PerlArray to its final size
>
> Then it is of course faster, but this is not a real world proposal IMHO,
The real-world version would increase the array's allocation by some fixed
mu
Sean O'Rourke (via RT) wrote:
> What happens if you presize the PerlArray to its final size
Then it is of course faster, but this is not a real world proposal IMHO,
you don't know in advance the usage pattern, so you can't do this. Of
course, the memory management of array/PerlArray could be sm
On Tue, 24 Sep 2002, Leopold Toetsch wrote:
> intlist_3.pbc is with 1) already 10 times faster then the same test with
> PerlArray (ok, that's not fair, .PerlArray has to new_pmc, which
> accounts for ~40% difference).
What happens if you presize the PerlArray to its final size before the
loop?
# New Ticket Created by Leopold Toetsch
# Please include the string: [perl #17549]
# in the subject line of all future correspondence about this issue.
# http://rt.perl.org/rt2/Ticket/Display.html?id=17549 >
Attached patch
- corrects a bug in int_list_assign 1)
- makes direct access fly
int
