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From: David Abrahams (dave_at_[hidden])
Date: 2003-11-20 08:02:38

Vladimir Prus <ghost_at_[hidden]> writes:

> [moving to jamboost]
> Rene Rivera wrote:

>> >We maybe oughta try throwing the Boehm collector at it. But remember
>> >that it also interns all strings, so any strings that are duplicated
>> >get shared. I'm not sure how that would balance out.
>> Hmm, it might be worth trying out. bjam already tries to implement a fairly
>> bad garbage collector... bad enough that the freeing collection part of it
>> is disabled ;-) So at minimum it just reuses equal strings.
> I thought about it previously and considered adding garbage collection to bjam
> a non-trivial excersice. Sufficiently non-trivial so that I decided I won't
> do it. Of course, it would be nice to have, but as far as V2 is concerned, I
> suspect that I might rewrite all performance-critical parts in C soon ;-)
> Besides, according to profiler, the most time-consuming part is the hash
> lookup. I'm not sure how faster it will become with gc.

You'd eliminate some of those. Recall that every time you form a new
string bjam does a hash lookup to intern it.

Dave Abrahams
Boost Consulting

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