RFC: naming for FrontTransversal and Transversal ranges
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Sat May 2 07:08:30 PDT 2009
Robert Jacques wrote:
> On Sat, 02 May 2009 03:35:51 -0400, Andrei Alexandrescu
> <SeeWebsiteForEmail at erdani.org> wrote:
>
>> Robert Jacques wrote:
>>>> No, repeated allocations are trivial to eliminate. I didn't even
>>>> bother to explain that in the article. The loop must only refill the
>>>> allocated object from the object that needs to be replaced.
>>> putting the test in the pseudo code for this would've help my
>>> understanding.
>>> if(copy is null)
>>> copy = s.deepDup;
>>> else
>>> s.deepDupTo(copy);
>>
>> copy = cast(T*) GC.malloc(T.sizeof);
>> do {
>> overwrite(s, copy);
>> copy.modify;
>> } while (!cas(copy, s));
>
> I'm confused. The article talks about copying the entire data structure,
> not just a node/etc. And trees, etc tend to have variable sizes, etc.
You can reuse memory even if it comprehends more complex patterns than
one single allocation.
Andrei
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